过滤器

 

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;

public class EncodingFilter extends HttpServlet implements Filter {
     //中文处理的过滤器
 public void doFilter(ServletRequest request, ServletResponse response,
   FilterChain FilterChain) throws IOException, ServletException {
  request.setCharacterEncoding("UTF-8");
  FilterChain.doFilter(request, response);
  response.setCharacterEncoding("UTF-8");
 }

 public void init(FilterConfig arg0) throws ServletException {

 }

 /**
  * Constructor of the object.
  */
 public EncodingFilter() {
  super();
 }

 /**
  * Destruction of the servlet. <br>
  */
 public void destroy() {
  super.destroy(); // Just puts "destroy" string in log
  // Put your code here
 }

 /**
  * Initialization of the servlet. <br>
  *
  * @throws ServletException if an error occurs
  */
 public void init() throws ServletException {
  // Put your code here
 }