package com.test;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LoginServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String username= request.getParameter("username");
String passwd= request.getParameter("passwd");
//System.out.println(username+passwd);
Map<String, String[]> map =request.getParameterMap();
Set<String> set= map.keySet();//获取所有键的集合
Iterator<String> iterator=set.iterator();//获取迭代器
while(iterator.hasNext()) { //判断集合中是否有元素
//System.out.println(iterator.next());
String key=(String) iterator.next();//获取每一个键
System.out.println(key+"---"+map.get(key).length);
String value=map.get(key)[0];//根据键获取值
System.out.println(key+"===="+value);
}
//PrintWriter pw=response.getWriter();
if("admin".equals(username)&& "123".equals(passwd)) {
System.out.println("登陸成功:");
/*
* pw.write("login success");
*
* Object obj = getServletContext().getAttribute("count"); int totalCount=0;
* if(obj !=null) { totalCount = (int) obj; }
* System.out.println("登录成功的次数是:"+totalCount);
* getServletContext().setAttribute("count",totalCount+1);
* response.setStatus(302); response.setHeader("Location","login_success.html");
*/
}else {
System.out.println("登录失败:");
//pw.write("login flaild");
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}