在创建一个简易的项目之前首先需要在idea配置好tomcat的环境
(1)点击add configuration
(2)点击+号
(3)选择好你的tomcat版本
(4)点击deployment部署你的项目,点击+号里的artifact
(5)设置好application context,点击apply
正片开始!!!
1.创建一个普通的java项目
2.右键点击项目,再点击add framework support
3.勾选web Application(默认勾选上 create web.xml),点击ok
4.在servlet包下创建一个servletTest类
package com.servlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public class servletTest extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// super.doGet(req, resp);
System.out.println("get请求");
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// super.doPut(req, resp);
System.out.println("post请求");
}
}
5.在web下创建一个login.jsp页面(一定要在web下创建,不然访问不到)
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>登录</title>
</head>
<body>
<form action="/servletTest/login" method="post">
用户名:<input type="text" name="username"> <br>
密码:<input type="password" name="password"> <br>
<input type="submit" value="提交">
</form>
</body>
</html>
6.在web.xml配置文件下配置映射
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<servlet>
<servlet-name>servletTest</servlet-name>
<servlet-class>com.servlet.servletTest</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>servletTest</servlet-name>
<url-pattern>/login</url-pattern>
</servlet-mapping>
</web-app>
7.启动项目
8.浏览器栏输入:http://localhost:8080/servletTest/login.jsp
随机输入用户名和密码并提交数据
9.控制台打印信息
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