SpringMVC @RequestParam 中文乱码问题解决

客户端用GET方式请求SpringMVC时，如果用采用如下方式则中文没有出现乱码：

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1. http://127.0.0.1:8080/SpringMVCHibernate4/rest/user/getUserById0/100-张三  
2. @RequestMapping(value="/getUserById0/{id}-{name}",method=RequestMethod.GET)  
3. @ResponseBody   
4. public String getUserById0(@PathVariable Long id, @PathVariable("name")String userName) {  
5.     User user = new User();  
6.     user.setUserName(userName);  
7.     user.setId(id);  
8.     return GsonUtil.toJson(user);  
9. }  

  但是如果采用如下方式则中文会出现乱码：

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1. http://127.0.0.1:8080/SpringMVCHibernate4/rest/user/getUserById2?id=100&name=张三  
2. @RequestMapping(value="/getUserById2",method=RequestMethod.GET)  
3. @ResponseBody  
4. public  String getUserById2(@RequestParam Long id,   
5.     RequestParam("name") String userName) {  
6.     User user = new User();  
7.     user.setUserName(userName);//乱码  
8.     user.setId(id);  
9.     return GsonUtil.toJson(user);  
10. }  

web.xml配置了字符编码过滤器，但是依然是乱码：

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1. <filter>  
2.     <filter-name>encodingFilter</filter-name>  
3.     <filter-class>org.springframework.web.filter.CharacterEncodingFilter</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>forceEncoding</param-name>  
10.        <param-value>true</param-value>  
11.     </init-param>  
12. </filter>  
13. <filter-mapping>  
14.     <filter-name>encodingFilter</filter-name>  
15.     <url-pattern>/*</url-pattern>  
16. </filter-mapping>  

 最终解决办法：修改tomcat默认编码（ISO-8859-1）方法，修改tomcat根目录的conf下的server.xml,Connector元素添加URIEncoding="UTF-8"属性，如下所示：

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1. <Connector connectionTimeout="20000" port="8080" protocol="HTTP/1.1"  redirectPort="8443" URIEncoding="UTF-8" />