Spring运行在tomcat上

Spring第一个Demo程序的基础上

第一步:添加web.xml文件, web.xml文件放在/WEB-INF下,内容如下

<?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_3_1.xsd"
  version="3.1">
  
  <context-param>
  		<param-name>contextConfigLocation</param-name>
  		<param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <!-- 封装了一个监听器,帮助加载spring的配置文件  -->
  <listener>
  		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
 
 
</web-app>

  该xml在tomcat运行时,会被加载,并且会把applicationContext.xml进行加载

第二步:添加StudentServlet类

package com.fd.spring.servlet;

import java.io.IOException;

import javax.servlet.ServletConfig;
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 org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

@WebServlet("/student")
public class StudentServlet extends HttpServlet{
	
	@Override
	public void init(ServletConfig config) throws ServletException {
		super.init(config);
		WebApplicationContext wac = WebApplicationContextUtils.getRequiredWebApplicationContext(getServletContext());
		
	}
	
	protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		System.out.println("service...");
		req.setAttribute("list", "123");
		req.getRequestDispatcher("index.jsp").forward(req, resp);
	}
}

  这时运行run on server的话,在页面上访问 http://localhost:8080/SpringDemo/student,在console上可以看到如下信息

 

第三步:继续添加index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
	<h1>this is spring on Tomcat</h1>
</body>
</html>

  再次运行出现如下页面

 

posted @ 2018-09-21 21:51  SparkQuant  阅读(3130)  评论(0编辑  收藏  举报