java 连接oracle 进行增删改查

1、在DAO层新增类OraclePersionDao

package com.test.dao;

import java.sql.*;

/**
* Created by wdw on 2017/9/16.
*/
public class OraclePersionDao {

// 数据库驱动类
private String dbDriver = "oracle.jdbc.driver.OracleDriver";
// 连接数据库url
private String dbURL = "jdbc:oracle:thin:@192.168.31.128:1521:orcl";
// 连接数据库用户名
private String dbUser = "PHIP";
// 连接数据库密码
private String dbPwd = "PHIP";
// 获取数据库连接方法, 返回Connection对象
private Connection con = null;
//数据执行语句
private Statement stat = null;
private String sql = null;
private ResultSet rs = null;

//创建数据库连接
public Connection getDBConnect() {
try {
// 加载数据库驱动
Class.forName(dbDriver);
con = DriverManager.getConnection(dbURL, dbUser, dbPwd);
} catch (Exception e) {
System.out.println(e);
}
return con;
}

//增加
public void Add() {
con = getDBConnect();
sql = "insert into sys_users(id,code,name)" +
"values('1','lucy','w')";
try {
stat = con.createStatement();
stat.executeUpdate(sql);
}
catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

//删除
public void Delete() {
con = getDBConnect();
sql = "delete from sys_users " +
"where ID=1";
try {
stat = con.createStatement();
stat.executeUpdate(sql);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

//修改
public void Update() {
con = getDBConnect();
sql = "update sys_users set code='c2' where id='1'";
try {
stat = con.createStatement();
} catch (SQLException e) {
e.printStackTrace();
}
}

//查询
public void Search() {
con = getDBConnect();
// 创建表的sql语句
sql = "SELECT * FROM sys_users";
try {
stat = con.createStatement();
rs = stat.executeQuery(sql);
while (rs.next()) {
String id = rs.getString(1);
String stuname = rs.getString(2);
String stusex = rs.getString(3);
System.out.println(id + "," + stuname + "," + stusex);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//功能:关闭数据库的连接

public void close() {//6.释放资源
try { // 捕捉异常
try {
if (rs != null) { // 当ResultSet对象的实例rs不为空时

rs.close(); // 关闭ResultSet对象
}
} finally {
try {
if (stat != null) { // 当Statement对象的实例stmt不为空时

stat.close(); // 关闭Statement对象
}
} finally {
if (con != null) { // 当Connection对象的实例conn不为空时
con.close(); // 关闭Connection对象
}
}
}
} catch (Exception e) {
e.printStackTrace(System.err); // 输出异常信息
}
}

}

View Code

2、main

private static void MySqlOperator() {

OraclePersionDao oracl = new OraclePersionDao();

oracl.Add();
oracl.Search();
oracl.Update();
oracl.Delete();

}

View Code

3、增加oracle驱动到本项目

找到安装oracle的目录x:\oracle\product\10.2.0\db_1\jdbc\lib\ojdbc14.jar  (注，不同版本会有不同名称）

复制该文件，点击WEB-INFO，Ctrl+v粘贴文件，点OKOKOK

右键粘贴的文件，Add  as library 一直点OK。，

3、测试