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package JavaBean; import java.sql.*; import javax.activation.DataSource; public class Bean { private String driver1="oracle.jdbc.driver.OracleDriver"; private Connection con=null; private Statement st=null; public ResultSet rs=null; String url = "jdbc:oracle:thin:@127.0.0.1:1521:IMTI"; // String sql=""; String username = "scott"; String pass2 = "tiger"; public Bean() { try { Class.forName(driver1); } catch (ClassNotFoundException ex) { System.out.println("驱动加栽失败"); } try { con = DriverManager.getConnection(url,username,pass2); } catch (SQLException ex1) { System.out.println("连接数据库异常"); } try { st = con.createStatement(); } catch (SQLException ex2) { System.out.println("表达式错误"); } } public boolean InsertStu(String sql) { try { if(st.executeUpdate(sql)!=-1) { con.commit(); System.out.println(sql); } return true; } catch (SQLException ex) { System.out.println("插入数据出错"); } return false; } public ResultSet SelectSql(String sql1) { String sql=sql1; try { rs=st.executeQuery(sql); /* while(rs.next()) { System.out.println("name"+rs.getString("name")); } */ } catch (Exception e) { System.out.println("数据显示不出来"); } return rs; } public boolean DelSql(String sql) { try { if (st.executeUpdate(sql) != -1) { con.commit(); return true; } } catch (SQLException ex) { System.out.println("数据删除失败"); } return false; } public boolean UpdateSql(String sql) { try { if (st.executeUpdate(sql) != -1) { con.commit(); return true; } } catch (SQLException ex) { System.out.println("数据修改失败"); } return false; } public void CloseSt() { try { st.close(); } catch (SQLException ex) { System.out.println("表达式关闭异常"); } } /* public int generateId(String tableName, String idField){ String sql1="select max("+idField+")+1 id from "+tableName; ResultSet rs=this.SelectSql(sql1); try { if(rs.next()){ return rs.getInt("id"); } } catch (SQLException e) { // TODO 自动生成 catch 块 e.printStackTrace(); } return 1; }*/ /*public static void main(String[] args) { Bean cs=new Bean(); //String sql="select * from username"; cs.SelectSql("select * from usermessage"); }*/ }