EncodingFilter

针对struts2中的乱码问题，使用filter过滤器来处理中文问题，记录如下：

 

web.xml配置

   <filter>
    <filter-name>FilterCondition</filter-name>
    <filter-class>
     com.fct.util.CharacterEncodingFilter
    </filter-class>
    <init-param>
      <param-name>Encoding</param-name>
      <param-value>gbk</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>FilterCondition</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

 

Filter类

 

 package com.fct.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.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

 

public class CharacterEncodingFilter implements Filter {

  private String config;

   public void destroy() {
     this.config = null;
   }

   /**
     * name="FilterCondition" <br>
     * init-param name="config" value="gbk"<br>
     * mapping url-pattern="/*"<br>
     */
   public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
     HttpServletRequest req;
     req = (HttpServletRequest) request;

     HttpServletResponse res;
     res = (HttpServletResponse) response;

     req.setCharacterEncoding(config);
     res.setCharacterEncoding(config);
     chain.doFilter(req, res);

   }

   /**
     * 获得web.xml中初始化的参数
     */
   public void init(FilterConfig config) throws ServletException {
     this.config = config.getInitParameter("Encoding");
   }

}