Filter 處理 Java 亂碼問題

代碼

 1 package com.denley.util;
 2 
 3  import java.io.IOException;
 4 
 5  import javax.servlet.Filter;
 6  import javax.servlet.FilterConfig;
 7  import javax.servlet.ServletException;
 8 import javax.servlet.ServletRequest;
 9 
10 import javax.servlet.ServletResponse;
11 import javax.servlet.FilterChain;
12 
13 public class SetCharacterEncodingFilter implements Filter {
14 
15     protected FilterConfig filterConfig;
16     protected String encodingName;
17     protected boolean enable;
18 
19     public SetCharacterEncodingFilter() {
20         this.encodingName = "UTF-8";
21         this.enable = false;
22     }
23 
24     public void init(FilterConfig filterConfig) throws ServletException {
25         this.filterConfig = filterConfig;
26         loadConfigParams();
27     }
28 
29     private void loadConfigParams() {
30         this.encodingName = this.filterConfig.getInitParameter("encoding");
31         String strIgnoreFlag = this.filterConfig.getInitParameter("enable");
32         if (strIgnoreFlag.equalsIgnoreCase("true")) {
33             this.enable = true;
34         } else {
35             this.enable = false;
36         }
37     }
38 
39     public void doFilter(ServletRequest request, ServletResponse response,
40             FilterChain chain) throws IOException, ServletException {
41         if (this.enable) {
42             request.setCharacterEncoding(this.encodingName);
43             response.setCharacterEncoding(this.encodingName);
44         }
45         chain.doFilter(request, response);
46     }
47 
48     public void destroy() {
49     }
50 
51 }
52 

 

 

 

代碼

 1     <filter>
 2         <filter-name>SetCharacterEncoding</filter-name>
 3         <filter-class>com.denley.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>  

 

加入Java代碼 和 web.xml 代碼 就OK了