spring boot 第一个例子

朴灿烈づ我的快乐病毒、 2022-09-24 12:20 202阅读 0赞

spring boot是一个非常好的框架，在这个例子中我感觉到他的简单，配置的简单。  
因为我是用maven进行开发的，所以使用的spring boot的maven方式。  
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/maven-v4_0_0.xsd">
      <modelVersion>4.0.0</modelVersion>
      <groupId>com.sunhuwh.springboot</groupId>
      <artifactId>spring-boot-demo</artifactId>
      <packaging>jar</packaging>
      <version>0.0.1-SNAPSHOT</version>
      <name>spring-boot-demo Maven Webapp</name>
      <url>http://maven.apache.org</url>
    
        <properties>
            <java.version>1.8</java.version>
        </properties>
    
        
        <parent>  
            <groupId>org.springframework.boot</groupId>  
            <artifactId>spring-boot-starter-parent</artifactId>  
            <version>1.4.1.BUILD-SNAPSHOT</version>
        </parent>  
    
          
        <dependencies>  
            <dependency>  
                <groupId>org.springframework.boot</groupId>  
                <artifactId>spring-boot-starter-web</artifactId>  
            </dependency>  
        </dependencies>  
    
          
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <executions>
                        <execution>
                            <goals>
                                <goal>repackage</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
            </plugins>
        </build>
    
          
          
        <repositories>
            <repository>
                <id>spring-snapshots</id>
                <url>http://repo.spring.io/snapshot</url>
                <snapshots><enabled>true</enabled></snapshots>
            </repository>
            <repository>
                <id>spring-milestones</id>
                <url>http://repo.spring.io/milestone</url>
            </repository>
        </repositories>
        <pluginRepositories>
            <pluginRepository>
                <id>spring-snapshots</id>
                <url>http://repo.spring.io/snapshot</url>
            </pluginRepository>
            <pluginRepository>
                <id>spring-milestones</id>
                <url>http://repo.spring.io/milestone</url>
            </pluginRepository>
        </pluginRepositories>
    </project>

Application:启动

import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    //@Configuration
    //@EnableAutoConfiguration
    //@ComponentScan
    @SpringBootApplication//简化了上面的
    public class Application { 
    
        public static void main(String[] args) {
            SpringApplication.run(Application.class, args);
        }
    
    }

web:使用@RestController+@RequestMapping就可以达到开发RESTful web services的目的，response只会一直通过response body发送。

import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import com.sunhuwh.springboot.service.DemoService;
    
    @RestController
    @RequestMapping
    public class IndexController {
    
        @Autowired
        private DemoService demoService;
    
        @RequestMapping("/")
        public String index(){
            demoService.test();
            return "hello world!";
        }
    
    }