1.java web--Filter

package filter;

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.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class EncodeFilter implements Filter {

   @Override
   public void destroy() {
       // TODO Auto-generated method stub
       
   }

   @Override
   public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)
           throws IOException, ServletException {
       // TODO Auto-generated method stub
       HttpServletRequest request = (HttpServletRequest) arg0;
       HttpServletResponse response = (HttpServletResponse) arg1;
       request.setCharacterEncoding("utf8");
       response.setCharacterEncoding("utf8");
       arg2.doFilter(request, response);
   }

   @Override
   public void init(FilterConfig arg0) throws ServletException {
       // TODO Auto-generated method stub
       
   }

   
   
}