全站请求编码过滤器

 1 *自定义的:
 2         >代码：
 3             public class EncodingFilter implements Filter{
 4                 private String charset="utf-8";
 5                 public void destroy(){
 6                 }
 7                 public void doFilter(ServletRequest req,ServletResponse resp，
 8                     FilterChain chain){
 9                     HttpServletRequest request=(HttpServletRequest)req;
10                     if(request.getMethod().equalsIgnoreCase("GET")){
11                         if(!request instanceof GetRequest){
12                             //处理get请求编码
13                             request=new GetRequest( requset,charset);
14                         }
15                     }else{
16                         //设置POST请求编码为默认编码utf-8
17                         request.setCharacterEncoding();
18                     }
19                     chain.doFilter(request,resp);
20                 }
21                 public void init(FilterConfig fConfig) throws Exception{
22                     String charsetfConfig.getInitParameter("charset");
23                     if(charset!=null && !charset.isEmpty()){
24                         this.charset=charset;
25                     }
26                 }
27             }
28

 1 *Spring框架提供的的CharacterEncodingFilter
 2         >配置：
 3             <filter>
 4                 <filter-name>characterEncodingFilter</filter-name>
 5                 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
 6                 <init-param>
 7                     <param-name>encoding</param-name>
 8                     <param-value>utf-8</param-value>
 9                 </init-param>
10             </filter>
11             <filter-mapping>
12                 <filter-name>characterEncodingFilter</filter-name>
13                 <url-pattern>/*</url-pattren>
14             </filter-mapping>