daydreamer1988/springboot-helloworld

使用Spring Initializer

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 http://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>2.1.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.minicup</groupId>
    <artifactId>springboot-helloworld</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot-helloworld</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-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                // 支持命令行中输入mvn spring-boot:run启动应用
                // 支持Maven打包
            </plugin>
        </plugins>
    </build>

</project>

Application

@SpringBootApplication
public class SpringbootHelloworldApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringbootHelloworldApplication.class, args);
    }
}

以上就是所有的配置,运行main函数

打开浏览器http://localhost:8080

服务是启动了, 但是还没有接口,接下来创建HelloController.java

@RestController
public class HelloController {

    @GetMapping("/hello/{name}")
    public String hollo(@PathVariable String name){
        return "Hello "+ name;
    }
}

重新运行

除了运行main函数之外, 还可以通过命令行执行mvn spring-boot:run来启动

项目打包部署

在命令行中输入java -jar target/springboot-helloworld-0.0.1-SNAPSHOT.jar

注意, pom文件中的依赖没有版本号, 这是因为parent的spring-boot-starter-parent中已经定义了

使用普通Maven创建SpringBoot

pom.xml

添加以下依赖(https://spring.io/guides/gs/rest-service/)

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
    </parent>

    <dependencies>
        <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>
        </dependency>
        <dependency>
            <groupId>com.jayway.jsonpath</groupId>
            <artifactId>json-path</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <properties>
        <java.version>1.8</java.version>
    </properties>


    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

添加Application类

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

添加TestController类

@RestController
public class TestController {

    @GetMapping("/hello/{name}")
    public String hello(@PathVariable String name){
        return "Hello " + name;
    }
}

运行main函数,访问8080,完成