今天在写练习的时候，传值乱码让我很头疼。今天就做个笔记，记录乱码的解决办法。

1.在jsp的头部配置

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

2.在action层

request.setCharacterEncoding("UTF-8");

 response.setCharacterEncoding("UTF-8");

3.jqueryeasyui传值时出现乱码,就要解碼

如我傳的值是userName

$("#loains").datagrid( {

        width :myWidth,         height : myHeight, 'login.do?action=UserList&userName='+encodeURIComponent(userName)';

action取值：

String userName= urlDecoder.decode(request.getParameter("userName"), "UTF-8");

或者：String userName= new String(request.getParameter("userName").getBytes("ISO8859-1"), "UTF-8");

 

4.配置过滤器

web.xml里面

 <filter>

  <filter-name>encodeFilter</filter-name>   <filter-class>com.wow.util.EncodeFilter</filter-class>   <init-param>    <param-name>encode</param-name>    <param-value>UTF-8</param-value>   </init-param>  </filter>

 <filter-mapping>

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

在com.wow.util.EncodeFilter类里面

package com.wow.util;

import javax.servlet.Filter;

import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest;

import org.apache.log4j.Logger;

public class EncodeFilter implements Filter {

    private String encode = "UTF-8";

    public void init(FilterConfig config) {

        this.encode = config.getInitParameter("encode");     }

    public void doFilter(ServletRequest request, ServletResponse response,

            FilterChain chain) {         try {             request.setCharacterEncoding(this.encode);             response.setCharacterEncoding(this.encode);             chain.doFilter(request, response);         } catch (Exception e) {             if (!(e instanceof java.net.SocketException)) {                 if (request instanceof HttpServletRequest) {                     Logger.getLogger(this.getClass()).error(                             "error request uri:"                                     + ((HttpServletRequest) request)                                             .getRequestURI());                 }                 Logger.getLogger(this.getClass()).error(e);             }             e.printStackTrace();         }     }

    public void destroy() {

    }

}