编码处理过滤器

CharseSetFilter.java

 1 package org.guangsoft.filter;
 2 
 3 import java.io.IOException;
 4 import javax.servlet.Filter;
 5 import javax.servlet.FilterChain;
 6 import javax.servlet.FilterConfig;
 7 import javax.servlet.ServletException;
 8 import javax.servlet.ServletRequest;
 9 import javax.servlet.ServletResponse;
10 import javax.servlet.http.HttpServletRequest;
11 import javax.servlet.http.HttpServletResponse;
12 
13 /**
14  *
15  * @author guanghe
16  */
17 public class CharsetFilter implements Filter 
18 {
19 
20     @Override
21     public void init(FilterConfig filterConfig) throws ServletException
22     {
23     }
24 
25     @Override
26     public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException
27     {
28         HttpServletRequest request = (HttpServletRequest) req;
29         HttpServletResponse response = (HttpServletResponse) res;
30         request.setCharacterEncoding("utf-8");
31         response.setCharacterEncoding("utf-8");
32         response.setContentType("text/html;charset=utf-8");
33         chain.doFilter(req, res);
34     }
35 
36     @Override
37     public void destroy()
38     {
39     }
40 
41 }

web.xml

1 <filter>
2         <filter-name>CharsetFilter</filter-name>
3         <filter-class>org.guangsoft.filter.CharsetFilter</filter-class>
4 </filter>
5 <filter-mapping>
6         <filter-name>CharsetFilter</filter-name>
7         <url-pattern>/*</url-pattern>
8 </filter-mapping>