1、系统要求
- Java 8 & 兼容java14 .
- Maven 3.3+
-
1.1、maven设置
设置Maven Jdk版本,Maven仓库首选下载位置(阿里云)
apache-maven-3.6.3\conf\setting.xml<mirrors><mirror><id>nexus-aliyun</id><mirrorOf>central</mirrorOf><name>Nexus aliyun</name><url>http://maven.aliyun.com/nexus/content/groups/public</url></mirror></mirrors><profiles><profile><id>jdk-1.8</id><activation><activeByDefault>true</activeByDefault><jdk>1.8</jdk></activation><properties><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target><maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion></properties></profile></profiles>
2、HelloWorld
需求:浏览发送/hello请求,响应 Hello,Spring Boot 2
2.2、引入依赖
<parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.3.4.RELEASE</version></parent><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency></dependencies>
2.3、创建主程序
/*** 主程序类* @SpringBootApplication:这是一个SpringBoot应用*/@SpringBootApplicationpublic class MainApplication {public static void main(String[] args) {SpringApplication.run(MainApplication.class,args);}}
2.4、编写业务
@RestController //@RestController == @ResponseBody + @RequestMappingpublic class HelloController {@RequestMapping("/hello")public String handle01(){return "Hello, Spring Boot 2!";}}
2.5、测试
2.7、简化部署
把项目打成jar包,直接在目标服务器执行即可。
<!--maven的插件--><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build>
