Spring Boot之入门

Spring Boot来简化Spring应用开发的一个框架，约定大于配置，去繁从简

目录结构

pom.xml导入依赖

<?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>
    <!--这是一个父项目-->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.1.RELEASE</version>
        <relativePath/>
    </parent>
    <groupId>com.uek.boot</groupId>
    <artifactId>Spring-Boot01</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>Spring-Boot01</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <swagger.version>2.6.1</swagger.version>
    </properties>

    <dependencies>
        <!--导入的依赖  -->
        <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>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <!--这个插件，可以将应用打成一个可执行的jar包-->
    <!-- Package as an executable jar -->
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

新建 controller 包

/*@ResponseBody  //这个类的所有方法返回的数据直接写给浏览器，
              // （如果是对象转为json）
@Controller*/
@RestController
public class HelloController {


    @RequestMapping("/hello")
    public  String hello(){
        return "Hello World";
    }

    @RequestMapping("/hi")
    public String hi(){
        return "hello";
    }
}