建立Java项目 选中JavaEE部分的Web Application
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导入tomcat的jar包
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建立servlet
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servlet测试代码
package com.knight.demo;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebServlet(name = "DemoServlet")
public class DemoServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//向浏览器输出内容
response.getWriter().write("hello servlet");
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doPost(request, response);
}
}
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jsp测试代码
<%--
Created by IntelliJ IDEA.
User: Administrator
Date: 2019/6/24
Time: 19:47
To change this template use File | Settings | File Templates.
--%>
<%@ page import="java.util.*" language="java" pageEncoding="UTF-8" %>
<html>
<head>
<title>小窗口</title>
</head>
<body>
<form action="<%=request.getContextPath()%>/hello" method="POST">
<input type="submit"value="提交">
</form>
</body>
</html>
web.xml
<?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>DemoServlet</servlet-name>
<servlet-class>com.knight.demo.DemoServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DemoServlet</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
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