1、基本步骤
https://www.jianshu.com/p/25168ea22c0a
2、注意Maven插件的选择
3、修改web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
</web-app>
4、找不到HttpServlet错误
如果看到JSP报错：The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path可以加入如下依赖解决
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
5、依赖MakeFriends，建立测试JSP
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="com.victor.maven.MakeFriends"%>
<%
MakeFriends makeFriends=new MakeFriends();
out.println(makeFriends.makeFriends("wanglipeng"));
%>
6、EL表达式没有提示问题
${pageContext}这个EL表达式中通过pageContext对象访问reuqest属性时本身是应该有提示的，但如果没有的话加入下面依赖即可
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1.3-b06</version>
<scope>provided</scope>
</dependency>
