处理get请求时编码的拦截器

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1. <struts>  
2.     <package name="entity.workspaceManager" extends="json-default" namespace="/entity/manager">  
3.         <interceptors>  
4.             <interceptor name="urlDecodeFilterInterceptor"  
5.                 class="com.whaty.platform.sso.web.interceptor.UrlDecodeFilterInterceptor">  
6.             </interceptor>  
7.               
8.             <interceptor-stack name="urlDecodeStack">  
9.                 <interceptor-ref name="urlDecodeFilterInterceptor"></interceptor-ref>  
10.                 <interceptor-ref name="defaultStack"></interceptor-ref>  
11.             </interceptor-stack>  
12.               
13.         </interceptors>  
14.           
15.         <default-interceptor-ref name="interceptorStack"></default-interceptor-ref>  
16.         <global-results>  

具体实现：

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1. package com.whaty.platform.sso.web.interceptor;  
2.   
3. import java.io.UnsupportedEncodingException;  
4. import java.net.URLDecoder;  
5. import java.util.Iterator;  
6. import java.util.Map;  
7.   
8. import javax.servlet.http.HttpServletRequest;  
9.   
10. import org.apache.commons.logging.Log;  
11. import org.apache.commons.logging.LogFactory;  
12. import org.apache.struts2.ServletActionContext;  
13.   
14. import com.opensymphony.xwork2.ActionInvocation;  
15. import com.opensymphony.xwork2.interceptor.AbstractInterceptor;  
16.    
17. public class UrlDecodeFilterInterceptor extends AbstractInterceptor {  
18.     private static final long serialVersionUID = -2335290125344040914L;  
19.     private static final Log LOG = LogFactory.getLog(UrlDecodeFilterInterceptor.class);  
20.   
21.     public String intercept(ActionInvocation invocation) throws Exception {  
22.         Map parameters = invocation.getInvocationContext().getParameters();  
23.         HttpServletRequest request = ServletActionContext. getRequest();   
24.           
25.         if("get".equalsIgnoreCase(request.getMethod())){  
26.             for (Iterator i = parameters.keySet().iterator(); i.hasNext();) {  
27.                 String param = (String) i.next();  
28.                 String[] values = (String[])parameters.get(param);  
29.                 if(values != null && values.length > 0){  
30.                     for (int j = 0; j < values.length; j++) {  
31.                         if(values[j] != null && !"".equals(values[j])){  
32.                             try {  
33.                                 values[j] = new String(values[j].getBytes("iso8859-1"),"UTF-8");  
34.                                 parameters.put(param, values[j]);  
35.                             } catch (UnsupportedEncodingException e1) {  
36.                                 e1.printStackTrace();  
37.                             }   
38.                         }  
39.                     }  
40.                 }  
41.             }  
42.         }  
43.           
44.         if("application/x-www-form-urlencoded;charset=UTF-8".equals(request.getContentType())){  
45.             for (Iterator i = parameters.keySet().iterator(); i.hasNext();) {  
46.                 String param = (String) i.next();  
47.                 String[] values = (String[])parameters.get(param);  
48.                 if(values != null && values.length > 0){  
49.                     for (int j = 0; j < values.length; j++) {  
50.                         if(values[j] != null && !"".equals(values[j])){  
51.                             try {  
52.                                 values[j] = URLDecoder.decode(values[j], "UTF-8");  
53.                                 parameters.put(param, values[j]);  
54.                             } catch (UnsupportedEncodingException e1) {  
55.                                 e1.printStackTrace();  
56.                             }   
57.                         }  
58.                     }  
59.                 }  
60.             }  
61.         }         
62.   
63.         return invocation.invoke();  
64.     }  
65. }