[JDBC] 클래스 생성부터 분리까지 모든 예제
Devel/JDBC2020. 8. 19. 22:21
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0. oracle_jar파일 buildPath에추가
1. 4가지 정보
String driver = "oracle.jdbc.driver.OracleDriver";//6)j.jar파일의 api파일 로딩
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
String userid = "scott";
String passwd="tiger"
//2. 드라이버 생성
Connection con = null;
//Connetcion con = null;//db connect 객체
//PreparedStatement pstmt = null;
Statement stmt = null;//connect를 이용해 sql명령을 실행하는 객체
ResultSet rs = null; //sql실행 후 select결과를 저장하는 객체
//2. 오라클 연결( Connection 연결)
con = DriverManager.getConnection(url, userid, passwd);
System.out.println("접속 성공");
//3. sql 작성
//5.Statement를 이용해 실행 select-executeQuery(),DML-executeUpdate()
rs = stmt.executeQuery(sql);//Select 결과를 ResultSet으로 받음.
//6. 자원반납 반대순서로 실행
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class JDBC_Test { public static void main(String[] args) { //0. oracle_jar파일 buildPath에추가 //1. 4가지 정보 String driver = "oracle.jdbc.driver.OracleDriver";//6)j.jar파일의 api파일 로딩 String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd="tiger"; //2. 드라이버 생성 Connection con = null; //Connetcion con = null;//db connect 객체 //PreparedStatement pstmt = null; Statement stmt = null;//connect를 이용해 sql명령을 실행하는 객체 ResultSet rs = null; //sql실행 후 select결과를 저장하는 객체 try { Class.forName(driver);//1. 드라이버 로딩 System.out.println("드라이버 로딩 성공"); //2. 오라클 연결( Connection 연결) con = DriverManager.getConnection(url, userid, passwd); System.out.println("접속 성공"); //3. sql 작성 String sql="select deptno, dname, loc from dept"; // ;제거 //4. SQL 준비=>Statement, PreparedStatement, CallableStatment(PL/SQL) //connetcion에서 명령을 실행해줄 Statiement객체를 하나 얻어옴 stmt = con.createStatement(); //5.Statement를 이용해 실행 select-executeQuery(),DML-executeUpdate() rs = stmt.executeQuery(sql);//Select 결과를 ResultSet으로 받음. while(rs.next()) { //한레코드의 자료를 컬럼으로 접근 출력 int deptno = rs.getInt("deptno"); //number값을 정수로 주면서 column이름을 줌. String dname = rs.getString("dname"); String loc = rs.getString("loc"); System.out.println(deptno +"\t"+dname+"\t"+loc); } }catch(ClassNotFoundException e) { e.printStackTrace(); }catch(SQLException e) { e.printStackTrace(); }finally { try { if(rs != null)rs.close(); if(stmt != null)stmt.close(); if(con != null)con.close(); } catch (SQLException e) { e.printStackTrace(); } } //6. 자원반납 반대순서로 실행 }//end main } // end class |
-insertTest
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class InsertTest { public static void main(String[] args) { String driver = "oracle.jdbc.driver.OracleDriver";//6)j.jar파일의 api파일 로딩 String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd="tiger"; Connection con = null; Statement stmt = null; ResultSet rs = null; try { Class.forName(driver); con = DriverManager.getConnection(url,userid,passwd); //4.sql작성 int deptno=19; String deptname = "개발"; String loc = "서울"; String sql ="insert into dept (deptno, dname, loc)"+"values ("+deptno+", '"+deptname+"','"+loc+"')"; System.out.println(sql); stmt = con.createStatement(); int result = stmt.executeUpdate(sql); System.out.println("실행된 레코드 갯수:"+result); String sql2 = "select * from dept"; System.out.println(sql2); rs = stmt.executeQuery(sql2); while(rs.next()) { int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); System.out.println(deptno1 + "\t"+ dname1 + "\t"+ loc1); } } catch (ClassNotFoundException e) { e.printStackTrace(); }catch(SQLException e) { e.printStackTrace(); }finally { try { if(rs != null)rs.close(); if(stmt !=null)stmt.close(); if(con != null)con.close(); } catch (SQLException e) { e.printStackTrace(); } } } } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class JDBC_Test02 { public static void main(String[] args) { String driver = "oracle.jdbc.driver.OracleDriver";//6)j.jar파일의 api파일 로딩 String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd="tiger"; Connection con = null; Statement stmt = null; ResultSet rs = null; try { Class.forName(driver); System.out.println("드라이버 로딩 성공"); con = DriverManager.getConnection(url, userid, passwd); System.out.println("접속 성공"); String sql = "select deptno , dname, loc from dept"; //String sql = "select deptno, dname, loc from dept"; stmt = con.createStatement(); rs = stmt.executeQuery(sql); while (rs.next()) { int deptno = rs.getInt(1); String dname = rs.getString(2); String loc = rs.getString(3); System.out.println(deptno+"\t"+dname+"\t"+loc); } } catch (ClassNotFoundException e) { e.printStackTrace(); }catch(SQLException e) { e.printStackTrace(); }finally { try { if (rs != null)rs.close(); if(stmt != null)stmt.close(); if(con != null)con.close(); } catch (SQLException e) { e.printStackTrace(); } } } } |
-ClassforNameTest
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | import java.lang.reflect.Field; import java.lang.reflect.Method; public class ClassforNameTest { public static void main(String[] args) throws Exception { Class cl = Class.forName("java.lang.Math"); Field [] fiedls = cl.getDeclaredFields(); for(Field f : fiedls) { System.out.println("fiedls: "+ f.getName()); } Method [] methods = cl.getDeclaredMethods(); for(Method m : methods) { System.out.println("methods: "+m.getName()); } } } |
-Statement_update
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class Statement_update { public static void main(String[] args) { String driver = "oracle.jdbc.driver.OracleDriver";//6)j.jar파일의 api파일 로딩 String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd="tiger"; Connection con = null; Statement stmt = null; ResultSet rs = null; try { Class.forName(driver); con = DriverManager.getConnection(url,userid,passwd); int deptno = 16; String dname = "영업"; String loc = "제주"; String sql = "Update dept set dname = '"+ dname+"', loc = '"+loc+"' where deptno ="+deptno ; System.out.println(sql); stmt = con.createStatement(); int result = stmt.executeUpdate(sql); // rs = stmt.executeQuery(sql); System.out.println("실행된 레코드 갯수:"+result); String sql3 = "delete from dept where deptno ="+deptno; int result2 = stmt.executeUpdate(sql3); String sql2 = "select * from dept"; rs = stmt.executeQuery(sql2); System.out.println(sql2); while (rs.next()) { int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); System.out.println(deptno1+"\t"+dname1+"\t"+loc1); } } catch (ClassNotFoundException e) { e.printStackTrace(); }catch(SQLException e) { e.printStackTrace(); }finally { try { if(rs != null)rs.close(); if(stmt !=null)stmt.close(); if(rs != null)rs.close(); } catch (SQLException e) { e.printStackTrace(); } } } } |
-WhereTest
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class WhereTest { public static void main(String[] args) { String driver = "oracle.jdbc.driver.OracleDriver";//6)j.jar파일의 api파일 로딩 String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd="tiger"; Connection con = null; Statement stmt = null; ResultSet rs = null; try { Class.forName(driver); System.out.println("드라이버 로딩 성공"); con = DriverManager.getConnection(url,userid,passwd); String name = "SALES"; System.out.println("접속 성공"); String sql = "select * from dept where dname='"+name+"'"; stmt = con.createStatement(); rs = stmt.executeQuery(sql); while(rs.next()) { int deptno = rs.getInt(1); String dname = rs.getString(2); String loc = rs.getString(3); System.out.println(deptno + "\t"+ dname + "\t"+loc); } } catch (ClassNotFoundException e) { e.printStackTrace(); }catch(SQLException e) { e.printStackTrace(); }finally { try { if(rs != null)rs.close(); if(stmt != null)stmt.close(); if(rs != null)rs.close(); } catch (SQLException e) { e.printStackTrace(); } } } } |
-divide_Test
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class divide_Test { String driver = "oracle.jdbc.driver.OracleDriver"; String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd = "tiger"; Connection con= null; ResultSet rs= null; PreparedStatement pstmt= null; public divide_Test() { //드라이버 로딩 try { Class.forName(driver); con = DriverManager.getConnection(url,userid,passwd); } catch (Exception e) { e.printStackTrace(); } } public String getDeptAdata(int deptno) { //deptno를 select 하기 위한 sql문 작성 // 한부서의 정보를 string으로 리턴 String sql="select deptno from dept"; return sql; } public int delAdata(int deptno) { //부서번호를 가지고 부서 삭제 후 처리한 레코드 갯수 리턴 return 0; } public static void main(String[] args) { //객체생성 //deptAdata 호출 검색 deptno전송 검색 결과 문자열로 받아서 출력 } } |
-JDBCUpdate
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class JDBCUpdate { public static void main(String[] args) { String driver = "oracle.jdbc.driver.OracleDriver";//6)j.jar파일의 api파일 로딩 String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd="tiger"; Connection con = null; PreparedStatement pstmt = null; ResultSet rs = null; try { Class.forName(driver); con = DriverManager.getConnection(url,userid, passwd); // String sql = "update dept set dname=?,loc=? where deptno =?"; // pstmt = con.prepareStatement(sql); // // pstmt.setString(1, "영업"); // pstmt.setString(2, "제주"); // pstmt.setInt(3, 90); // // int num = pstmt.executeUpdate(); // System.out.println("실행된 레코드 갯수: "+num); // // String sql2 = "select * from dept where deptno = ?"; // pstmt = con.prepareStatement(sql2); // pstmt.setInt(1, 90); // rs = pstmt.executeQuery(); // System.out.println(sql2); // // // String sql4 = "select deptno from dept where dname in(?,?)"; // pstmt = con.prepareStatement(sql4); // pstmt.setString(1, "영업"); // pstmt.setString(2, "개발"); // rs = pstmt.executeQuery(); // System.out.println(sql4); // String sql5 = "select * from dept order by deptno"; // pstmt = con.prepareStatement(sql5); // rs = pstmt.executeQuery(); // System.out.println(sql5); // String sql7 = "select loc from dept where deptno >= 20"; // pstmt = con.prepareStatement(sql7); // rs = pstmt.executeQuery(); // System.out.println(sql7); // String sql8 = "select dname, loc from dept where dname like 'A%'"; // pstmt = con.prepareStatement(sql8); // rs = pstmt.executeQuery(); // System.out.println(sql8); // String sql9 = "select dname from dept where deptno = (select max(deptno) from dept)"; // pstmt = con.prepareStatement(sql9); // rs = pstmt.executeQuery(); // System.out.println(sql9); // String sql10 ="insert into dept (deptno, dname, loc)" + "values(?,?,?)"; // pstmt = con.prepareStatement(sql10); // pstmt.setInt(1, 99); // pstmt.setString(2, "개발"); // pstmt.setString(3, "서울"); // rs = pstmt.executeQuery(); // System.out.println(sql10); // String sql12 = "update dept set loc = '제주' where deptno =99"; // pstmt = con.prepareStatement(sql12); // rs=pstmt.executeQuery(); // System.out.println(sql12); // int num = pstmt.executeUpdate(); // System.out.println("실행된 레코드 갯수: "+num); // String sql11 = "select deptno, loc from dept where deptno =99"; // pstmt = con.prepareStatement(sql11); // rs = pstmt.executeQuery(); // System.out.println(sql11); // while(rs.next()) { // int deptno1 = rs.getInt(1); // String dname1 = rs.getString(1); // String loc1 = rs.getString(2); // System.out.println(dname1); //+"\t"+dname1+"\t"+loc1 // } }catch (ClassNotFoundException e) { e.printStackTrace(); } catch(SQLException e) { e.printStackTrace(); }finally { try { if( rs != null)rs.close(); if(pstmt != null)pstmt.close(); if(con != null)con.close(); } catch (SQLException e) { e.printStackTrace(); } } } } |
-JDBC_Method_divide_Test
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class JDBC_Method_divide_Test { String driver = "oracle.jdbc.driver.OracleDriver"; String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd = "tiger"; Connection con= null; ResultSet rs= null; PreparedStatement pstmt= null; public JDBC_Method_divide_Test() { //드라이버 로딩 //connection 연결 try { Class.forName(driver); System.out.println("로딩성공"); } catch (ClassNotFoundException e) { e.printStackTrace(); } } public String deptAdata(int deptno) { //deptno를 select 하기 위한 sql문 작성 // 한부서의 정보를 string으로 리턴 String data = null; try { con = DriverManager.getConnection(url,userid,passwd); String sql="select deptno from dept where deptno =?"; pstmt= con.prepareStatement(sql); pstmt.setInt(1, deptno); rs = pstmt.executeQuery(); while(rs.next()) { int deptno1 = rs.getInt(1); String dname = rs.getString(2); String loc = rs.getString(3); data = deptno1+" " + dname +" "+ loc; } } catch (SQLException e) { e.printStackTrace(); }finally { try { rs.close(); pstmt.close(); con.close(); } catch (SQLException e) { e.printStackTrace(); } } return data; } public int delAdata(int deptno) { //부서번호를 가지고 부서 삭제 후 처리한 레코드 갯수 리턴 int x = 0; try { con = DriverManager.getConnection(url, userid, passwd); String sql= "delete from dept where deptno=?"; pstmt= con.prepareStatement(sql); pstmt.setInt(1, deptno); x= pstmt.executeUpdate(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally { try { rs.close(); pstmt.close(); con.close(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return x; } public static void main(String[] args) { //객체생성 //deptAdata 호출 검색 deptno전송 검색 결과 문자열로 받아서 출력 JDBC_Method_divide_Test test= new JDBC_Method_divide_Test(); System.out.println(test.deptAdata(90)); System.out.println(test.delAdata(90)); } } |
-JDBCTEST
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class JDBCTest { public static void main(String[] args) { String driver = "oracle.jdbc.driver.OracleDriver";//6)j.jar파일의 api파일 로딩 String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd="tiger"; Connection con = null; PreparedStatement pstmt = null; ResultSet rs = null; try { Class.forName(driver); con = DriverManager.getConnection(url,userid,passwd); String sql = "select deptno, dname, loc from dept"; pstmt = con.prepareStatement(sql); rs = pstmt.executeQuery(); while(rs.next()) { int deptno = rs.getInt(1); String dname = rs.getString(2); String loc = rs.getString(3); System.out.println(deptno + "\t"+ dname +"\t"+ loc); } } catch (ClassNotFoundException e) { e.printStackTrace(); }catch(SQLException e) { e.printStackTrace(); }finally { try { if( rs != null)rs.close(); if(pstmt != null)pstmt.close(); if(con !=null)con.close(); } catch (SQLException e) { e.printStackTrace(); } } } } |
-JDBCTEST2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class JDBCTest2 { public static void main(String[] args) { String driver = "oracle.jdbc.driver.OracleDriver";//6)j.jar파일의 api파일 로딩 String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd="tiger"; Connection con = null; PreparedStatement pstmt = null; ResultSet rs = null; try { Class.forName(driver); con = DriverManager.getConnection(url,userid, passwd); // String sql = "insert into dept(deptno, dname, loc)"+ // "values (?,?,?)"; // pstmt = con.prepareStatement(sql); // pstmt.setInt(1, 14); // pstmt.setString(2, "개발"); // pstmt.setString(3, "서울"); // int num = pstmt.executeUpdate(); // System.out.println("실행된 레코드 갯수: "+num); String sql2="select * from dept where deptno=?"; // pstmt.setInt(1, 12); pstmt = con.prepareStatement(sql2); rs = pstmt.executeQuery(sql2); System.out.println(sql2); while(rs.next()) { int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); System.out.println(deptno1+"\t"+dname1+"\t"+loc1); } } catch (ClassNotFoundException e) { e.printStackTrace(); } catch(SQLException e) { e.printStackTrace(); }finally { try { if( rs != null)rs.close(); if(pstmt != null)pstmt.close(); if(con != null)con.close(); } catch (SQLException e) { e.printStackTrace(); } } } } |
-ArrayTest
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | public class ArrayTest { String driver = "oracle.jdbc.driver.OracleDriver"; String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd = "tiger"; Connection con= null; ResultSet rs= null; PreparedStatement pstmt= null; public ArrayTest() { try { Class.forName(driver); System.out.println("로딩 성공"); } catch (ClassNotFoundException e) { e.printStackTrace(); } } public ArrayList<String> getdeptAdata(int deptno) { ArrayList<String>list = new ArrayList<String>(); try { con = DriverManager.getConnection(url, userid, passwd); String sql ="select deptno from dept where deptno = ?"; pstmt = con.prepareStatement(sql); pstmt.setInt(1, deptno); rs = pstmt.executeQuery(); while(rs.next()) { String result =""; int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); result = deptno1 + "\t"+ dname1 + "\t"+ loc1; list.add(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } return list; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | public ArrayList<String> getdeptAdata(int deptno) { ArrayList<String>list = new ArrayList<String>(); try { con = DriverManager.getConnection(url, userid, passwd); String sql ="select deptno from dept where deptno = ?"; pstmt = con.prepareStatement(sql); pstmt.setInt(1, deptno); rs = pstmt.executeQuery(); while(rs.next()) { String result =""; int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); result = deptno1 + "\t"+ dname1 + "\t"+ loc1; list.add(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } return list; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | public ArrayList<String> searchDeptByName(String dname) { ArrayList<String> list = new ArrayList<String>(); try { con = DriverManager.getConnection(url, userid, passwd); String sql = "select * from dept where dname =?"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dname); rs = pstmt.executeQuery(); while(rs.next()) { String result = ""; int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); result = deptno1 + "\t"+ dname1 + "\t"+ loc1; list.add(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } return list; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | public ArrayList<DeptDTO> getAllDept() { ArrayList<DeptDTO>list = new ArrayList<DeptDTO>(); try { con = DriverManager.getConnection(url,userid,passwd); String sql = "select * from dept"; pstmt = con.prepareStatement(sql); rs = pstmt.executeQuery(); while(rs.next()) { DeptDTO dept = new DeptDTO(); dept.setDeptno(rs.getInt(1)); dept.setDname(rs.getString(2)); dept.setLoc(rs.getString(3)); list.add(dept); // int deptno1 = rs.getInt(1); // String dname1 = rs.getString(2); // String loc1 = rs.getString(3); // result = deptno1 + "\t"+ dname1 + "\t"+ loc1; // list.add(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } return list; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | public ArrayList<String> getAllDept() { ArrayList<String>list = new ArrayList<String>(); try { con = DriverManager.getConnection(url,userid,passwd); String sql = "select * from dept"; pstmt = con.prepareStatement(sql); rs = pstmt.executeQuery(); while(rs.next()) { String result =""; int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); result = deptno1 + "\t"+ dname1 + "\t"+ loc1; list.add(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } return list; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | public static void main(String[] args) { ArrayTest test= new ArrayTest(); ArrayList<String> list = test.getAllDept(); // ArrayList<String> list = test.searchDeptByName("개발"); // ArrayList<String> list = test.getdeptAdata(50); for (String x : list) { System.out.println(x); } ArrayList<DeptDTO> list = test.getAllDept(); for (DeptDTO deptDTO : list) { System.out.println(deptDTO.getDname()); } } } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 | import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; public class ArrayTest { String driver = "oracle.jdbc.driver.OracleDriver"; String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd = "tiger"; Connection con= null; ResultSet rs= null; PreparedStatement pstmt= null; public ArrayTest() { try { Class.forName(driver); System.out.println("로딩 성공"); } catch (ClassNotFoundException e) { e.printStackTrace(); } } public ArrayList<String> getdeptAdata(int deptno) { ArrayList<String>list = new ArrayList<String>(); try { con = DriverManager.getConnection(url, userid, passwd); String sql ="select deptno from dept where deptno = ?"; pstmt = con.prepareStatement(sql); pstmt.setInt(1, deptno); rs = pstmt.executeQuery(); while(rs.next()) { String result =""; int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); result = deptno1 + "\t"+ dname1 + "\t"+ loc1; list.add(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } return list; } public ArrayList<String> getdeptAdata(int deptno) { ArrayList<String>list = new ArrayList<String>(); try { con = DriverManager.getConnection(url, userid, passwd); String sql ="select deptno from dept where deptno = ?"; pstmt = con.prepareStatement(sql); pstmt.setInt(1, deptno); rs = pstmt.executeQuery(); while(rs.next()) { String result =""; int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); result = deptno1 + "\t"+ dname1 + "\t"+ loc1; list.add(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } return list; } public ArrayList<String> searchDeptByName(String dname) { ArrayList<String> list = new ArrayList<String>(); try { con = DriverManager.getConnection(url, userid, passwd); String sql = "select * from dept where dname =?"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dname); rs = pstmt.executeQuery(); while(rs.next()) { String result = ""; int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); result = deptno1 + "\t"+ dname1 + "\t"+ loc1; list.add(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } return list; } public ArrayList<DeptDTO> getAllDept() { ArrayList<DeptDTO>list = new ArrayList<DeptDTO>(); try { con = DriverManager.getConnection(url,userid,passwd); String sql = "select * from dept"; pstmt = con.prepareStatement(sql); rs = pstmt.executeQuery(); while(rs.next()) { DeptDTO dept = new DeptDTO(); dept.setDeptno(rs.getInt(1)); dept.setDname(rs.getString(2)); dept.setLoc(rs.getString(3)); list.add(dept); // int deptno1 = rs.getInt(1); // String dname1 = rs.getString(2); // String loc1 = rs.getString(3); // result = deptno1 + "\t"+ dname1 + "\t"+ loc1; // list.add(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } return list; } public ArrayList<String> getAllDept() { ArrayList<String>list = new ArrayList<String>(); try { con = DriverManager.getConnection(url,userid,passwd); String sql = "select * from dept"; pstmt = con.prepareStatement(sql); rs = pstmt.executeQuery(); while(rs.next()) { String result =""; int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); result = deptno1 + "\t"+ dname1 + "\t"+ loc1; list.add(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } return list; } public static void main(String[] args) { ArrayTest test= new ArrayTest(); ArrayList<String> list = test.getAllDept(); // ArrayList<String> list = test.searchDeptByName("개발"); // ArrayList<String> list = test.getdeptAdata(50); for (String x : list) { System.out.println(x); } ArrayList<DeptDTO> list = test.getAllDept(); for (DeptDTO deptDTO : list) { System.out.println(deptDTO.getDname()); } } } |
-JDBC_Method_divide_Test
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 | import java.sql.Connection; import java.sql.Driver; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; public class JDBC_Method_divide_Test { String driver = "oracle.jdbc.driver.OracleDriver"; String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd = "tiger"; Connection con= null; ResultSet rs= null; PreparedStatement pstmt= null; public JDBC_Method_divide_Test() { try { Class.forName(driver); System.out.println("로딩 성공"); } catch (ClassNotFoundException e) { e.printStackTrace(); } } public String search(String loc, String dname) { //지역만 넘어온 경우 지역만 검색 결과 리턴 //이름만 넘오온 경우 이름만 검색 결과 리턴 //이름, 지역이 넘어온 경우 두 가지를 이용 검색 결과 리턴 //sql 하나로 result set 하나. 지역이름, null, or null, 지역이름. String result = ""; try { con = DriverManager.getConnection(url,userid,passwd); String sql="select * from dept where "; if(dname != null && loc == null) { sql += "dname = ?"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dname); }if(loc != null && dname == null) { sql += "loc =?"; pstmt = con.prepareStatement(sql); pstmt.setString(1, loc); }if(loc != null && dname !=null ) { sql += " loc =? and dname = ? "; pstmt = con.prepareStatement(sql); pstmt.setString(1, loc); pstmt.setString(2, dname); } rs = pstmt.executeQuery(); while(rs.next()) { int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); result = deptno1+" " + dname1 +" "+ loc1; System.out.println(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); }} return result; } public String getAllDept(){ //부서전체 select //결과를 메인으로 리턴 메인에서 전체 데이터 출력 String result = ""; try { con = DriverManager.getConnection(url,userid,passwd); int deptno = 0; String dname =null; String loc =null; String sql = "select * from dept"; pstmt = con.prepareStatement(sql); rs = pstmt.executeQuery(); while(rs.next()) { int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); System.out.println(deptno1 + "\t"+ dname1 + "\t"+ loc1); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } return result; } public String searchDeptByLoc(String loc){ //주소로 select //검색한 내용을 ? 로 리턴 메인에서 전체 데이터 출력 String sql = "select * from dept where loc =?"; String result = ""; try { con = DriverManager.getConnection(url,userid,passwd); pstmt = con.prepareStatement(sql); pstmt.setString(1, loc); rs = pstmt.executeQuery(); while(rs.next()) { result = rs.getInt(1) + " "+ rs.getString(2)+ " "+rs.getString(3); System.out.println(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); }catch(SQLException e) { e.printStackTrace(); } } return result; } public String searchDeptByName(String dname){ //부서이름으로로 select //검색한 내용을 ? 로 리턴 메인에서 전체 데이터 출력 //한부서당 한줄씩,,, 여러개 결과 나오면,,collection에 담아서 메인으로 리턴할지 //String 한뒤 ArrayList로도 시도해보기 String sql = "select * from dept where dname =?"; String result =""; try { con = DriverManager.getConnection(url,userid,passwd); pstmt = con.prepareStatement(sql); pstmt.setString(1, dname); rs = pstmt.executeQuery(); while(rs.next()) { result = rs.getInt(1) + " "+ rs.getString(2)+ " "+rs.getString(3); System.out.println(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); }catch(SQLException e) { e.printStackTrace(); } } return result;} public ArrayList<String> searchDeptByName(String dname) { ArrayList<String> list= new ArrayList<String>(); try { con = DriverManager.getConnection(url, userid, passwd); String sql = "select * from dept where "; sql = sql + "dname =? "; pstmt = con.prepareStatement(sql); pstmt.setString(1, dname); rs = pstmt.executeQuery(); while (rs.next()) { String addResult= ""; addResult += rs.getInt(1); addResult += rs.getString(2); addResult += rs.getString(3); list.add(addResult); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if(rs!=null)rs.close(); if(pstmt!=null)pstmt.close(); if(con!=null)con.close(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return list; } List<String> data = new ArrayList<String>(); try { con = DriverManager.getConnection(url,userid,passwd); String sql = "select * from dept where dname =?"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dname); rs = pstmt.executeQuery(); while(rs.next()) { int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc = rs.getString(3); data.add(dname1); data.add(loc); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); }catch(SQLException e) { e.printStackTrace(); } } return data; } public int updateDept(String dname, String loc, int deptno){ //부서번호로 dname, loc업데이트 후 //업데이트 결과 갯수 리턴 int result = 0; try { con = DriverManager.getConnection(url,userid,passwd); String sql = "update dept set dname =? , loc=? where deptno =?"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dname); pstmt.setString(2, loc); pstmt.setInt(3,deptno); result = pstmt.executeUpdate(); System.out.println("실행된 레코드 갯수:" +result); } catch (SQLException e) { e.printStackTrace(); }finally { try { // rs.close(); pstmt.close(); con.close(); } catch (SQLException e) { e.printStackTrace(); } } return result; } public int insertDept(String dname, String loc, int deptno){ //부서하나 추가후 //insert 결과 갯수 리턴 int result = 0; try { con = DriverManager.getConnection(url,userid,passwd); String sql="insert into dept(dname, loc, deptno)" + "values(?,?,?)"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dname); pstmt.setString(2, loc); pstmt.setInt(3, deptno); result = pstmt.executeUpdate(); System.out.println("실행된 레코드 갯수:"+result); } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null)rs.close(); if( pstmt != null)pstmt.close(); if( con != null)con.close(); } catch (SQLException e) { e.printStackTrace(); } } return result; } public String getdeptAdata(int deptno) { //부서번호로 select //검색 결과가 없을 경우 사용자 정의 Exception 발생(RecordNotFoundException-메세지 //찾는 부서 번호가 없습니다. //검색한 내용을 문자열로 리턴 String data = null; try { con = DriverManager.getConnection(url,userid,passwd); String sql = "select deptno from dept where deptno = ?"; pstmt = con.prepareCall(sql); pstmt.setInt(1, deptno); rs = pstmt.executeQuery(); while(rs.next()) { int deptno1 = rs.getInt(1); String dname = rs.getString(2); String loc = rs.getString(3); data = deptno1+" " + dname +" "+ loc; } } catch (SQLException e) { System.out.println("찾는 부서 번호가 없습니다."); e.printStackTrace(); }finally { try { rs.close(); pstmt.close(); con.close(); } catch (SQLException e) { e.printStackTrace(); } }return data; } public int updateDept(DeptDTO dept){ int result = 0; try { con = DriverManager.getConnection(url,userid,passwd); String sql = "update dept set dname =? , loc=? where deptno =?"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dept.getDname()); pstmt.setString(2, dept.getLoc()); pstmt.setInt(3,dept.getDeptno()); result = pstmt.executeUpdate(); System.out.println("실행된 레코드 갯수:" +result); } catch (SQLException e) { e.printStackTrace(); }finally { try { // rs.close(); pstmt.close(); con.close(); } catch (SQLException e) { e.printStackTrace(); } } return result; } public int insertDept(DeptDTO dept){ int result = 0; try { con = DriverManager.getConnection(url,userid,passwd); String sql="insert into dept(dname, loc, deptno)" + "values(?,?,?)"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dept.getDname()); pstmt.setString(2, dept.getLoc()); pstmt.setInt(3, dept.getDeptno()); result = pstmt.executeUpdate(); System.out.println("실행된 레코드 갯수:"+result); } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null)rs.close(); if( pstmt != null)pstmt.close(); if( con != null)con.close(); } catch (SQLException e) { e.printStackTrace(); } } return result; } public DeptDTO getdeptAdata(int deptno) { DeptDTO dept = null; try { con = DriverManager.getConnection(url,userid,passwd); String sql = "select * from dept where deptno = ?"; pstmt = con.prepareCall(sql); pstmt.setInt(1, deptno); rs = pstmt.executeQuery(); while(rs.next()) { dept = new DeptDTO(rs.getInt(1),rs.getString(2),rs.getString(3)); } } catch (SQLException e) { System.out.println("찾는 부서 번호가 없습니다."); e.printStackTrace(); }finally { try { if(rs!=null)rs.close(); if(pstmt!=null)pstmt.close(); if(pstmt!=null)con.close(); } catch (SQLException e) { e.printStackTrace(); } }return dept; } public static void main(String[] args) { JDBC_Method_divide_Test test= new JDBC_Method_divide_Test(); // DeptDTO list = test.getdeptAdata(90); System.out.println(test.getdeptAdata(50)); //System.out.println(test.getdeptAdata(15)); //System.out.println(test.delAdata(90)); } }} |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | import java.sql.Connection; import java.sql.Driver; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; public class JDBC_Method_divide_Test { String driver = "oracle.jdbc.driver.OracleDriver"; String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "scott"; String passwd = "tiger"; Connection con= null; ResultSet rs= null; PreparedStatement pstmt= null; public JDBC_Method_divide_Test() { try { Class.forName(driver); System.out.println("로딩 성공"); } catch (ClassNotFoundException e) { e.printStackTrace(); } } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | public DeptDTO getdeptAdata(int deptno) { DeptDTO dept = null; try { con = DriverManager.getConnection(url,userid,passwd); String sql = "select * from dept where deptno = ?"; pstmt = con.prepareCall(sql); pstmt.setInt(1, deptno); rs = pstmt.executeQuery(); while(rs.next()) { dept = new DeptDTO(rs.getInt(1),rs.getString(2),rs.getString(3)); } } catch (SQLException e) { System.out.println("찾는 부서 번호가 없습니다."); e.printStackTrace(); }finally { try { if(rs!=null)rs.close(); if(pstmt!=null)pstmt.close(); if(pstmt!=null)con.close(); } catch (SQLException e) { e.printStackTrace(); } }return dept; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | public int insertDept(DeptDTO dept){ int result = 0; try { con = DriverManager.getConnection(url,userid,passwd); String sql="insert into dept(dname, loc, deptno)" + "values(?,?,?)"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dept.getDname()); pstmt.setString(2, dept.getLoc()); pstmt.setInt(3, dept.getDeptno()); result = pstmt.executeUpdate(); System.out.println("실행된 레코드 갯수:"+result); } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null)rs.close(); if( pstmt != null)pstmt.close(); if( con != null)con.close(); } catch (SQLException e) { e.printStackTrace(); } } return result; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | public int updateDept(DeptDTO dept){ int result = 0; try { con = DriverManager.getConnection(url,userid,passwd); String sql = "update dept set dname =? , loc=? where deptno =?"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dept.getDname()); pstmt.setString(2, dept.getLoc()); pstmt.setInt(3,dept.getDeptno()); result = pstmt.executeUpdate(); System.out.println("실행된 레코드 갯수:" +result); } catch (SQLException e) { e.printStackTrace(); }finally { try { // rs.close(); pstmt.close(); con.close(); } catch (SQLException e) { e.printStackTrace(); } } return result; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | public String getdeptAdata(int deptno) { //부서번호로 select //검색 결과가 없을 경우 사용자 정의 Exception 발생(RecordNotFoundException-메세지 //찾는 부서 번호가 없습니다. //검색한 내용을 문자열로 리턴 String data = null; try { con = DriverManager.getConnection(url,userid,passwd); String sql = "select deptno from dept where deptno = ?"; pstmt = con.prepareCall(sql); pstmt.setInt(1, deptno); rs = pstmt.executeQuery(); while(rs.next()) { int deptno1 = rs.getInt(1); String dname = rs.getString(2); String loc = rs.getString(3); data = deptno1+" " + dname +" "+ loc; } } catch (SQLException e) { System.out.println("찾는 부서 번호가 없습니다."); e.printStackTrace(); }finally { try { rs.close(); pstmt.close(); con.close(); } catch (SQLException e) { e.printStackTrace(); } }return data; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | public int insertDept(String dname, String loc, int deptno){ //부서하나 추가후 //insert 결과 갯수 리턴 int result = 0; try { con = DriverManager.getConnection(url,userid,passwd); String sql="insert into dept(dname, loc, deptno)" + "values(?,?,?)"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dname); pstmt.setString(2, loc); pstmt.setInt(3, deptno); result = pstmt.executeUpdate(); System.out.println("실행된 레코드 갯수:"+result); } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null)rs.close(); if( pstmt != null)pstmt.close(); if( con != null)con.close(); } catch (SQLException e) { e.printStackTrace(); } } return result; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | public int updateDept(String dname, String loc, int deptno){ //부서번호로 dname, loc업데이트 후 //업데이트 결과 갯수 리턴 int result = 0; try { con = DriverManager.getConnection(url,userid,passwd); String sql = "update dept set dname =? , loc=? where deptno =?"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dname); pstmt.setString(2, loc); pstmt.setInt(3,deptno); result = pstmt.executeUpdate(); System.out.println("실행된 레코드 갯수:" +result); } catch (SQLException e) { e.printStackTrace(); }finally { try { // rs.close(); pstmt.close(); con.close(); } catch (SQLException e) { e.printStackTrace(); } } return result; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | public String searchDeptByName(String dname){ //부서이름으로로 select //검색한 내용을 ? 로 리턴 메인에서 전체 데이터 출력 //한부서당 한줄씩,,, 여러개 결과 나오면,,collection에 담아서 메인으로 리턴할지 //String 한뒤 ArrayList로도 시도해보기 String sql = "select * from dept where dname =?"; String result =""; try { con = DriverManager.getConnection(url,userid,passwd); pstmt = con.prepareStatement(sql); pstmt.setString(1, dname); rs = pstmt.executeQuery(); while(rs.next()) { result = rs.getInt(1) + " "+ rs.getString(2)+ " "+rs.getString(3); System.out.println(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); }catch(SQLException e) { e.printStackTrace(); } } return result;} |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | public String searchDeptByLoc(String loc){ //주소로 select //검색한 내용을 ? 로 리턴 메인에서 전체 데이터 출력 String sql = "select * from dept where loc =?"; String result = ""; try { con = DriverManager.getConnection(url,userid,passwd); pstmt = con.prepareStatement(sql); pstmt.setString(1, loc); rs = pstmt.executeQuery(); while(rs.next()) { result = rs.getInt(1) + " "+ rs.getString(2)+ " "+rs.getString(3); System.out.println(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); }catch(SQLException e) { e.printStackTrace(); } } return result; } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | public String search(String loc, String dname) { //지역만 넘어온 경우 지역만 검색 결과 리턴 //이름만 넘오온 경우 이름만 검색 결과 리턴 //이름, 지역이 넘어온 경우 두 가지를 이용 검색 결과 리턴 //sql 하나로 result set 하나. 지역이름, null, or null, 지역이름. String result = ""; try { con = DriverManager.getConnection(url,userid,passwd); String sql="select * from dept where "; if(dname != null && loc == null) { sql += "dname = ?"; pstmt = con.prepareStatement(sql); pstmt.setString(1, dname); }if(loc != null && dname == null) { sql += "loc =?"; pstmt = con.prepareStatement(sql); pstmt.setString(1, loc); }if(loc != null && dname !=null ) { sql += " loc =? and dname = ? "; pstmt = con.prepareStatement(sql); pstmt.setString(1, loc); pstmt.setString(2, dname); } rs = pstmt.executeQuery(); while(rs.next()) { int deptno1 = rs.getInt(1); String dname1 = rs.getString(2); String loc1 = rs.getString(3); result = deptno1+" " + dname1 +" "+ loc1; System.out.println(result); } } catch (SQLException e) { e.printStackTrace(); }finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); }} return result; } |
-workshop
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.Scanner; public class workshop { public static void main(String[] args) throws ClassNotFoundException { String driver = "oracle.jdbc.driver.OracleDriver"; String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String userid = "test"; String passwd="test"; Connection con= null; ResultSet rs= null; PreparedStatement pstmt= null; try { Class.forName(driver); con = DriverManager.getConnection(url,userid,passwd); String sql =""; Scanner scan = new Scanner(System.in); System.out.println("매출 조회 메뉴 = [ 매출 일자 순 :1, 상품별 매출 순 :2 ] :"); int menu = scan.nextInt(); if(menu ==1) { sql=" SELECT TO_CHAR(ODATE, 'YYYY-MM-DD') 영업일, SUM(O.QUANTITY*P.PRICE) 매출 " + "FROM D7_ORDER O JOIN D7_PRODUCT P USING(pid) GROUP BY ODATE ORDER BY 1"; }else if(menu ==2) { sql="SELECT PNAME 상품명, SUM(O.QUANTITY*P.PRICE) 매출 " + "FROM D7_ORDER O JOIN D7_PRODUCT P USING(pid) GROUP BY PNAME ORDER BY 2 DESC"; } pstmt= con.prepareStatement(sql); rs = pstmt.executeQuery(); System.out.println("--------------"); System.out.println(((menu==1)?"영업일":"상품명") + "\t\t\t매출"); System.out.println("--------------"); while(rs.next()) { System.out.println(rs.getString(1)+"\t\t"+rs.getString(2)); } System.out.println("------------------"); } catch (SQLException e) { e.printStackTrace(); }catch(ClassNotFoundException e) { e.printStackTrace(); } finally { try { if( rs != null) rs.close(); if( pstmt != null) pstmt.close(); if( con != null) con.close(); } catch (Exception e) { e.printStackTrace(); } } }} |
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