Servlet

package com.qf.day27;

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 LoginServlet extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

doPost(request,response);
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
//设置相应的编码
response.setCharacterEncoding("utf-8");
//设置请求的编码
request.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
//1从request中获取用户名和密码
String username=request.getParameter("username");
String pwd=request.getParameter("pwd");
System.out.println("用户名"+username+"    密码"+pwd);
//2判断
if(username.equals("张三")&&pwd.equals("123456")){
out.println("登陆成功，欢迎--"+username+"--");
}else{
out.println("用户名密码错误");
}

out.flush();
out.close();
}

}