接收并处理用户通过 GET 方式上传的数据，一般小于 2K，并且安全性要求不高。

1 package com.wangjialin.internet.servlet; 2  3 import java.io.IOException; 4 import javax.servlet.ServletException; 5 import javax.servlet.annotation.WebServlet; 6 import javax.servlet.http.HttpServlet; 7 import javax.servlet.http.HttpServletRequest; 8 import javax.servlet.http.HttpServletResponse; 9 10 11 @WebServlet("/ServletForGETMethod")12 public class ServletForGETMethod extends HttpServlet {13     14     private static final long serialVersionUID = 1L;15    16     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {17         18             String name= request.getParameter("name");19 //            String name= new String(request.getParameter("name").getBytes("ISO8859-1"),"UTF-8");20             String age= request.getParameter("age");21             System.out.println("name: " + name );22             System.out.println("age: " + age );23     24     }25 26     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {27         // TODO Auto-generated method stub28     }29 30 }

HttpServletRequestEncodingWrapper （HttpServletRequest 业务包装器，解决汉字乱码的问题）

1 package com.wangjialin.internet.filter; 2  3 import java.io.UnsupportedEncodingException; 4  5 import javax.servlet.http.HttpServletRequest; 6 import javax.servlet.http.HttpServletRequestWrapper; 7  8 public class HttpServletRequestEncodingWrapper extends 9         HttpServletRequestWrapper {10 11     private HttpServletRequest request;12     public HttpServletRequestEncodingWrapper(HttpServletRequest request) {13         super(request);14         this.request = request;15     }16     17     @Override18     public String getParameter(String name) {19         20         String value = request.getParameter(name);21         try {22             if(value != null){23                 return new String(value.getBytes("ISO8859-1"), "UTF-8");24             }25         } catch (UnsupportedEncodingException e) {26         }27         return super.getParameter(name);28     }29 30 }

EncodingFilter

1 package com.wangjialin.internet.filter; 2  3 import java.io.IOException; 4  5 import javax.servlet.Filter; 6 import javax.servlet.FilterChain; 7 import javax.servlet.FilterConfig; 8 import javax.servlet.ServletException; 9 import javax.servlet.ServletRequest;10 import javax.servlet.ServletResponse;11 import javax.servlet.annotation.WebFilter;12 import javax.servlet.http.HttpServletRequest;13 14 15 @WebFilter("/*")16 public class EncodingFilter implements Filter {17 18     public void destroy() {19         // TODO Auto-generated method stub20     }21 22     public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) 23             throws IOException, ServletException {24         25         HttpServletRequest req = (HttpServletRequest) request;26         27         if("GET".equals(req.getMethod())){28             29             HttpServletRequestEncodingWrapper wraper = new HttpServletRequestEncodingWrapper(req);30             chain.doFilter(wraper, response);31             32         }else{33             req.setCharacterEncoding("UTF-8");34             chain.doFilter(request, response);35         }36     }37 38     public void init(FilterConfig fConfig) throws ServletException {39         // TODO Auto-generated method stub40     }41 }