标签:end 自动扫描 string dap 跟踪 artifact strong 配置 rgs
SpringBoot是建立在Spring基础之上,通过最少的Spring前期配置使应用程序尽快启动并运行。学习SpringBoot之前,预先掌握使用Spring、Maven工具。
特点:
创建工程
1) 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.demo</groupId> <artifactId>spring-boot-helloworld</artifactId> <version>1.0-SNAPSHOT</version> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.5.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> <!-- 项目打包为可执行jar包的插件--> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
2) 创建@SpringBootApplication主程序类
package com.demo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** * @SpringBootApplication 标注主程序类,说明是SpringBoot应用 */ @SpringBootApplication public class HelloWorldApplication { public static void main(String[] args) { // Spring应用启动起来 SpringApplication.run(HelloWorldApplication.class,args); } }
3) 定义请求
说明:程序启动时,自动扫描加载主程序类所在包以及全部子包的组件,范围以外的组件注解不自动扫描。
package com.demo.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; @Controller public class HelloController { @ResponseBody @RequestMapping("/hi") public String hi(){ return "Hello World!"; } }
4)运行
4.1 选择 HelloWorldApplication --> Run as --> Java Application
4.2 测试
标签:end 自动扫描 string dap 跟踪 artifact strong 配置 rgs
原文地址:https://www.cnblogs.com/walkwithmonth/p/11872987.html