javaWEB中文亂碼問題的終極解決方法

web頁面：兩次encodeURI編碼
var url = "login.action?username="+encodeURI(encodeURI("中文用戶名"));
java後臺：URLDecoder解碼
String username = URLDecoder.decode(request.getParameter("username"),"UTF-8");

解決post中文亂碼問題
首先將jsp，html的編碼都該爲UTF-8

jsp：<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

html：<meta charset="utf-8">

然後在web.xml中增加一個filter

<filter>
  <filter-name>encoding</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>
</filter>
<filter-mapping>
	<filter-name>encoding</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>

解決get方式中文亂碼
在tomcat的server.xml中Connector配置中增加下面紅色字體

<Connector port="8081" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443"
[color=red]URIEncoding="UTF-8"[/color] />