1、系统要求
- Java 8 & 兼容java14 .
- Maven 3.3+
- idea 2019.1.2
1.1、maven设置 设置阿里镜像和jdk1.8
<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
2.1、创建maven工程
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) {// 返回对象为ConfigurableApplicationContextSpringApplication.run(MainApplication.class,args);}}
2.4、编写业务
@RestController // @RestController == @Controller+@ResponseBodypublic class HelloController {@RequestMapping("/hello")public String handle01(){return "Hello, Spring Boot 2!";}}
2.5、测试
2.6、简化配置
application.properties(path resources/application.properties)
server.port=8888
2.7、简化部署
<build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build>
把项目(包括依赖包和环境)打成jar包,直接在目标服务器执行即可。
通过maven打包成jar包,然后可以用java -jar xxxx.jar运行


