SpringBoot学习helloworld

　　这几天开始学习springBoot记录一下(Hello World)

   
     pom.xml

<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>
    <groupId>org.bianqi.spring.first</groupId>
    <artifactId>SpringBootFirst</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.1.RELEASE</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>${start-class}</mainClass>
                    <layout>ZIP</layout>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
        </plugin>
        </plugins>
    </build>
</project>

     2.编写controller

package org.bianqi.first.demo;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@EnableAutoConfiguration
@ComponentScan
public class FirstDemo {
    
    @Autowired
    private FirstService fs;
    
    @RequestMapping("/")
    String home(){
        fs.demo();
        return "hello world!";
    }
    public static void main(String[] args) {
        SpringApplication.run(FirstDemo.class, args);
    }
    
}

3.编写service的接口

package org.bianqi.first.demo;

public interface FirstService {
  public String demo();
}

4.编写service层实现类

package org.bianqi.first.demo;

import org.springframework.stereotype.Service;

@Service
public class FirstServiceImpl implements FirstService{

    public String demo(){
        System.out.println("hhhhh");
        return "helloworld我爱你";
    }
}

在Controller中通过main方法启动~浏览器访问http://localhost:8080/ 显示helloworld 并且控制台打印hhhhh