小型投票系统（Eclipse+Oracle+Weblogic）

package com; import java.sql.*; public class DBBean { private String driverStr="oracle.jdbc.driver.OracleDriver"; private String connStr; private Connection conn; private Statement stmt; public Connection getConn() { return conn; } public void setConn(Connection conn) { this.conn = conn; } public String getConnStr() { return connStr; } public void setConnStr(String connStr) { this.connStr = connStr; } public String getDriverStr() { return driverStr; } public void setDriverStr(String driverStr) { this.driverStr = driverStr; } public Statement getStmt() { return stmt; } public void setStmt(Statement stmt) { this.stmt = stmt; } public DBBean(){ try{ Class.forName(driverStr); } catch(ClassNotFoundException ex){ System.out.println(ex.getMessage()); } } public ResultSet executeQuery(String sql){ ResultSet rs=null; try{ conn=DriverManager.getConnection(connStr,"system","root"); stmt=conn.createStatement(); rs=stmt.executeQuery(sql); } catch(SQLException ex){ System.out.println(ex.getMessage()); } return rs; } public int executeUpdate(String sql){ int result=0; try{ conn=DriverManager.getConnection(connStr,"system","root"); stmt=conn.createStatement(); result=stmt.executeUpdate(sql); } catch(SQLException ex){ System.out.println(ex.getMessage()); } return result; } public void close(){ try{ stmt.close(); conn.close(); } catch(SQLException ex){ System.out.println(ex.getMessage()); } } }