使用Servlet Filter消除struts乱码

 1 package com.test.util;  
 2  
 3  import javax.servlet.Filter;
 4  import javax.servlet.FilterConfig;
 5 import javax.servlet.ServletException;
 6 import javax.servlet.ServletRequest;
 7 import javax.servlet.ServletResponse;
 8 import javax.servlet.FilterChain;
 9 import java.io.IOException;
10  
11 public class SetCharacterEncodingFilter implements Filter {
12  
13 protected FilterConfig filterConfig;
14 protected String encodingName;
15 protected boolean enable;
16  
17 public SetCharacterEncodingFilter() {
18 this.encodingName = "UTF-8";
19 this.enable = false;
20 }
21  
22 public void init(FilterConfig filterConfig) throws ServletException {
23 this.filterConfig = filterConfig;
24 loadConfigParams();
25 }
26  
27 private void loadConfigParams() {
28 this.encodingName = this.filterConfig.getInitParameter("encoding");
29 String strIgnoreFlag = this.filterConfig.getInitParameter("enable");
30 if (strIgnoreFlag.equalsIgnoreCase("true")) {
31 this.enable = true;
32 } else {
33 this.enable = false;
34 }
35 }
36  
37 public void doFilter(ServletRequest request, ServletResponse response,
38 FilterChain chain) throws IOException, ServletException {
39 if (this.enable) {
40 request.setCharacterEncoding(this.encodingName);
41 response.setCharacterEncoding(this.encodingName);
42 }
43 chain.doFilter(request, response);
44 }
45  
46 public void destroy() {
47 }
48 }

 1 <filter>  
 2   <filter-name>SetCharacterEncoding</filter-name>   
 3   <filter-class>com.test.util.SetCharacterEncodingFilter</filter-class>  
 4   <init-param>   
 5    <param-name>encoding</param-name>   
 6    <param-value>UTF-8</param-value>  
 7   </init-param>  
 8   <init-param>  
 9    <param-name>enable</param-name>  
10    <param-value>true</param-value>  
11   </init-param>  
12   </filter>  
13   <filter-mapping>  
14    <filter-name>SetCharacterEncoding</filter-name>  
15    <servlet-name>action</servlet-name>  
16   </filter-mapping>