struts2 中文亂碼的解決辦法分享

更新時間：2014年02月10日 16:01:55 作者：

這篇文章主要介紹了struts2 中文亂碼的解決辦法,需要的朋友可以參考下

適合情況 -> 從jsp傳入到action時的亂碼情況,這里以GBK為例

1.建立一個用于轉(zhuǎn)換編碼的filter
文件位置舉例:src.util.SetCharacterEncodingFilter.java

package util;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.UnavailableException;

/**
* Example filter that sets the character encoding to be used in parsing the
* incoming request
*/
public class SetCharacterEncodingFilter implements Filter {

    /**
     * Take this filter out of service.
     */
    public void destroy() {
    }
    /**
     * Select and set (if specified) the character encoding to be used to
     * interpret request parameters for this request.
     */
    public void doFilter(ServletRequest request, ServletResponse response,
    FilterChain chain)throws IOException, ServletException {

request.setCharacterEncoding("gbk");

    // 傳遞控制到下一個過濾器
    chain.doFilter(request, response);
    }

public void init(FilterConfig filterConfig) throws ServletException {
}
}

2.修改web.xml,在struts的FilterDispatcher映射之前添加2個filter

復制代碼代碼如下:

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
 xmlns="http://java.sun.com/xml/ns/javaee" 
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
 http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
 <listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
 </listener>
    <filter>
  <filter-name>Set Character Encoding</filter-name> 
  <filter-class>util.SetCharacterEncodingFilter</filter-class> 
 </filter> 
 <filter-mapping> 
     <filter-name>Set Character Encoding</filter-name>
     <url-pattern>/*</url-pattern> 
 </filter-mapping>

    <filter> 
        <filter-name>struts-cleanup</filter-name> 
        <filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class> 
    </filter>
    <filter-mapping>
        <filter-name>struts-cleanup</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    

    
 <filter>
  <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
 </filter>
  <filter-mapping>
  <filter-name>struts2</filter-name>
  <url-pattern>/*</url-pattern>
 </filter-mapping>
</web-app>

3.你的JSP頭應該有
<%@ page language="java" pageEncoding="GBK"%>

4.在struts.xml中修改默認的編碼設定

復制代碼代碼如下:

...
...
...

</struts>

基本上就這樣可以解決大多傳入的字符亂碼問題

PS:如果是數(shù)據(jù)庫提取字符亂碼,比如mysql,確認你的數(shù)據(jù)庫內(nèi)字符是gbk,并且連接字符串指定了字符編碼
<property name="url" value="jdbc:mysql://localhost/database?useUnicode=true&characterEncoding=gbk"></property>

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