PHP随手笔记整理之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 */public class MySQLConnection {  public static Connection conn = null;  public static String driver = "com.mysql.jdbc.Driver";  public static String url = "jdbc:mysql://127.0.0.1:3306/post";  public static String user = "root";  public static 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 */public class Work {  /*   * insert 增加   */  public static int 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   */  public static void 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   */  public static int 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   */  public static int 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   */  public static void main(String[] args) {    // System.out.println(insert());     select();    // System.out.println(update());    // System.out.println(delete());  }}