PHP脚本和JAVA连接mysql数据库
PHP学习笔记――PHP脚本和JAVA连接mysql数据库
环境
开发包：appserv-win32-2.5.10
服务器：Apache2.2
数据库：phpMyAdmin
语言：php5，java
平台：windows 10
java驱动：mysql-connector-java-5.1.37
需求
编写一个PHP脚本语言，连接到phpMyAdmin数据库的test库
编写一个java web服务端，连接到phpMyAdmin数据库的test库
代码
php连接方式
mysql.php
<?php
/*****************************
*数据库连接
*****************************/
$conn = @mysql_connect("localhost","root","123");
if (!$conn){
die("连接数据库失败：" . mysql_error());
}
mysql_select_db("test", $conn);
//字符转换，读库
mysql_query("set character set utf8");
mysql_query("set names utf8");
?>
test.php测试
<?php
error_reporting(0); //防止报错
include('mysql.php');
$result=mysql_query("select * from user"); //根据前面的计算出开始的记录和记录数
// 循环取出记录
$six;
while($row=mysql_fetch_row($result))
{
echo$row[0];
echo$row[1];
}
?>
运行截图：
java连接方式
1.新建一个java project为mysqlTest
2.加载JDBC驱动,mysql-connector-java-5.1.37
MySQLConnection.java
package com.mysqltest;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
/*
* **Mysql连接**
*
* 参数：
* conn 连接
* url mysql数据库连接地址
* user 数据库登陆账号
* password 数据库登陆密码
* 方法：
* conn 获取连接
*/
publicclass MySQLConnection {
publicstatic Connection conn = null;
publicstatic String driver ="com.mysql.jdbc.Driver";
publicstatic String url ="jdbc:mysql://127.0.0.1:3306/post";
publicstatic String user ="root";
publicstatic String password ="123";
/*
* 创建Mysql数据连接第一步：加载驱动 Class.forName（Driver）第二步：创建连接
*DriverManager.getConnection(url, user, password);
*/
public Connection conn() {
try {
Class.forName(driver);
} catch (ClassNotFoundException e) {
System.out.println("驱动加载错误");
e.printStackTrace();
}
try {
conn = DriverManager.getConnection(url, user, password);
} catch (SQLException e) {
System.out.println("数据库链接错误");
e.printStackTrace();
}
return conn;
}
}
Work.java
package com.mysqltest;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
/*
* mysql增删改查
*/
publicclass Work {
/*
* insert增加
*/
publicstaticint insert() {
MySQLConnection connection = new MySQLConnection();
Connection conns; // 获取连接
PreparedStatement pst; // 执行Sql语句
int i = 0;
String sql = "insert into user (username,password)values(?,?)";
try {
conns = connection.conn();
pst = conns.prepareStatement(sql);
pst.setString(1, "lizi");
pst.setString(2, "123");
i= pst.executeUpdate();
pst.close();
conns.close();
} catch (SQLException e) {
System.out.println("数据写入失败");
e.printStackTrace();
}
return i;
}
/*
* select写入
*/
publicstaticvoid select() {
MySQLConnection connection = new MySQLConnection();
Connection conns; // 获取连接
PreparedStatement pst; // 执行Sql语句(Statement)
ResultSet rs; // 获取返回结果
String sql = "select * from user";
try {
conns = connection.conn();
pst = conns.prepareStatement(sql);
rs = pst.executeQuery(sql);// 执行sql语句
System.out.println("---------------------------------------");
System.out.println("名字 | 密码");
while (rs.next()) {
System.out.println(rs.getString("username") + " | " + rs.getString("password"));
}
System.out.println("---------------------------------------");
conns.close();
pst.close();
rs.close();
} catch (SQLException e) {
System.out.println("数据查询失败");
e.printStackTrace();
}
}
/*
* update修改
*/
publicstaticint update() {
MySQLConnection connection = new MySQLConnection();
Connection conns; // 获取连接
PreparedStatement pst; // 执行Sql语句(Statement)
int i = 0;
String sql = "update user set password = ? where username =?";
try {
conns = connection.conn();
pst = conns.prepareStatement(sql);
pst.setString(1, "123");
pst.setString(2, "lizi");
i= pst.executeUpdate();
pst.close();
conns.close();
} catch (SQLException e) {
System.out.println("数据修改失败");
e.printStackTrace();
}
return i;
}
/*
* delete删除
*/
publicstaticint delete() {
MySQLConnection connection = new MySQLConnection();
Connection conns; // 获取连接
PreparedStatement pst; // 执行Sql语句(Statement)
int i = 0;
String sql = "delete from user where username = ?";
try {
conns = connection.conn();
pst = conns.prepareStatement(sql);
pst.setString(1, "lizi");
i= pst.executeUpdate();
pst.close();
conns.close();
} catch (SQLException e) {
System.out.println("数据删除失败");
e.printStackTrace();
}
return i;
}
/*
* test
*/
publicstaticvoid main(String[] args) {
//System.out.println(insert());
select();
//System.out.println(update());
// System.out.println(delete());
}
}