Java Web乱码问题对应

1 GET请求乱码

在server.xml中配置URI编码

<Connector connectionTimeout="20000" port="8080" URIEncoding="UTF-8"  protocol="HTTP/1.1" redirectPort="8443"/>

 

 

2 POST请求乱码

1>在web.xml中配置过滤器

Spring提供了实现类CharacterEncodingFilter

    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

 

3 JSP显示乱码

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

<meta http-equiv="Content-Type" content="text/html; harset=UTF-8">

 

4 数据库乱码

 Mysql：在DB的URL中，添加编码设定，例：

String url = "jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8"

其他DB：创建DB和表时，指定与系统一致的编码