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Spring boot 之一 HelloWorld

日期：2018-09-05点击：309收藏

谨以此专辑，纪念Spring Boot学习之旅。

创建第一个项目以及跳转到JSP页面

1、新建项目

2、项目创建完成后的目录结构

3、pom.xml文件

<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.example</groupId> <artifactId>demo</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>demo</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.4.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>10</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <!--web 支持--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!--jsp页面使用jstl标签--> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <!--用于编译jsp--> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <scope>provided</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>

4、启动类DemoApplication.java 文件

package com.example.demo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } }

5、HelloController控制器文件

package com.example.demo; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.servlet.ModelAndView; import javax.servlet.http.HttpServletRequest; @Controller @RequestMapping(value = "/view") public class HelloController { @RequestMapping(value = "/hello") public String hello(HttpServletRequest request){ System.out.println("测试数据"); request.setAttribute("demo","大漠孤烟直"); request.setAttribute("demo2","长河落日圆"); return "hello"; } }

6、application.properties文件

spring.mvc.view.prefix = /WEB-INF/views/ spring.mvc.view.suffix = .jsp

7、hello.jsp 文件

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basepath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <html> <head> <base href="<%=basepath %>" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Insert title here</title> </head> <body> 这是测试页面 <% String demo = (String)request.getAttribute("demo"); String demo2 = (String)request.getAttribute("demo2"); System.out.println("demo :"+demo); System.out.println("demo2:"+demo2); %> </body> </html>``` 8、启动成功 ![image](https://yqfile.alicdn.com/878fb0ca4dd3e27223e243e7e1690c64d97a6cc3.png) 9、访问测试 ![image](https://yqfile.alicdn.com/cf4d9448373204825fbe75f150930d76db88b47c.png)

原文链接：https://yq.aliyun.com/articles/636834

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