FirstServlet

import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class FirstServlet extends HttpServlet {@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {request.setCharacterEncoding("UTF-8");String a = request.getParameter("a");//String[] as = request.getParameterValues("a");System.out.println(this+":doGet:"+a);//response.setCharacterEncoding("UTF-8");response.setContentType("text/html; charset=UTF-8");PrintWriter out = response.getWriter();out.print("<b>"+a+"</b>");}@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {request.setCharacterEncoding("UTF-8");String a = request.getParameter("a");System.out.println(this+":doPost:"+a+":"+request.getRemoteAddr());//response.setCharacterEncoding("UTF-8");response.setContentType("text/html; charset=UTF-8");PrintWriter out = response.getWriter();out.print("<b>"+a+"</b>");}}