目录
使用 https://start.spring.io/ 初始化项目
项目结构
$ tree -I target . ├── Makefile ├── pom.xml └── src ├── main │ ├── java │ │ └── com │ │ └── example │ │ └── demo │ │ ├── DemoApplication.java │ │ └── IndexController.java │ └── resources │ └── application.properties └── test └── java └── com └── example └── demo └── DemoApplicationTests.java
配置文件 application.properties 无设置
依赖文件 pom.xml
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.7.5</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.example</groupId> <artifactId>demo</artifactId> <version>0.0.1-SNAPSHOT</version> <name>demo</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <scope>compile</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
项目入口 DemoApplication.java
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); } }
控制器 IndexController.java
package com.example.demo; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class IndexController { @GetMapping("/") public String index() { return "index"; } }
启动方式
1、方式一
从main方法启动
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); } }
2、方式二
Maven 命令行启动
$ mvn spring-boot:run
可以使用Makefile文件简化启动方式
# Makefile # 启动开发环境 .PHONY: dev dev: mvn spring-boot:run
运行
$ make dev
注意：mvn前面是tab而不是空格
3、方式三
通过jar包启动
$ mvn clean package $ java -jar target/demo-0.0.1-SNAPSHOT.jar
参考
