登陆功能实现_Servlet开发规则
处理登陆请求web.xml配置
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" id="WebApp_ID" version="4.0"> <!-- 配置servlet: 配置LoginServlet与请处理请求的映射 --> <servlet> <servlet-name>loginServlet</servlet-name> <servlet-class>com.xiaowang.login.servlet.LoginServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>loginServlet</servlet-name> <!-- 客戶端的登陆请求: http://locallost:8080/web01/login--> <url-pattern>/login</url-pattern> </servlet-mapping> </web-app>
LoginServlet
package com.xiaowang.login.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LoginServlet extends HttpServlet{
/**
* 常用方法:doGet doPost service
* doGet:处理客户端get方式的请求
* doPost:处理客户端Post方式的请求
* service:根据客户端的请求方式去调用对应的doGet、doPost方法
*/
//要么重写service,要么重写doGet doPost方法
@Override
protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// TODO Auto-generated method stub
super.service(req, resp);
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doPost(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println("登陆请求过来了............");
}
}