mysql+jsp出现乱码如何解决

JSP页面传输到MySQL数据库时，中文为乱码（数据库中存储乱码）。下面我们就来看一下如何解决。

1、将所有的涉及到编码的都设置为 utf8（utf-8）。

设置数据库编码：

命令行执行：mysql> show variables like 'character%'; 可以查看是否为utf8

mysql> show variables like 'character%';
+--------------------------+------------------------------------------------------+
| Variable_name            | Value                                                |
+--------------------------+------------------------------------------------------+
| character_set_client     | utf8                                                 |
| character_set_connection | utf8                                                 |
| character_set_database   | utf8                                                 |
| character_set_filesystem | binary                                               |
| character_set_results    | utf8                                                 |
| character_set_server     | latin1                                               |
| character_set_system     | utf8                                                 |
| character_sets_dir       | D:Program Filesmysql-5.6.20-winx64sharecharsets |
+--------------------------+------------------------------------------------------+

character_set_server项不知道如何设置，不过不影响。修改数据库编码执行命令： mysql> alter database db_name character set utf8; 

修改其他编码： mysql> set names 'utf8';

设置JSP页面编码：在页面顶部添加 

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>

修改数据库连接DriverManager.getConnection(url, usr, pwd)的url：

String url = "jdbc:mysql://localhost:3306/db_name?useUnicode=true&characterEncoding=utf-8";

2、post传输方式

在发送页面和接收页面顶部都添加以下代码：

<%  request.setCharacterEncoding("UTF-8"); 
    response.setCharacterEncoding("UTF-8"); 
    response.setContentType("text/html; charset=utf-8");
%>

推荐：MySQL教程

来源：PY学习网：原文地址：https://www.py.cn/article.html