SpringBoot之Hello world篇

た入场券 2022-06-03 04:18 259阅读 0赞

1.  环境：  
    sys:windows 7  
    JDK：1.8  
    IDE:Eclipse
2.  创建Maven项目SpringBootDemo：  
    ![这里写图片描述][SouthEast]  
    项目结构为：  
    ![这里写图片描述][SouthEast 1]
3.  修改App.java

package com.spb.SpringBootDemo;
    
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.scheduling.annotation.EnableScheduling;
    
    /** * application * * author:lsd */
    @SpringBootApplication
    @EnableScheduling
    @MapperScan("com.spb.SpringBootDemo.dao")
    public class App { 
    
    
        public static void main( String[] args )
        {
           SpringApplication.run(App.class, args);
        }
    }

4, 在rest包下创建HelloWorldController

package com.spb.SpringBootDemo.rest;
    
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    
    @RestController
    @RequestMapping("/greeting")
    public class HelloWorldController { 
    
        @RequestMapping("/sayHello")
        public String hello(){
            return "Hello,world!";
        }
    
    }

5.修改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>com.spb</groupId>
      <artifactId>SpringBootDemo</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>jar</packaging>
    
      <name>SpringBootDemo</name>
      <url>http://maven.apache.org</url>
    
      <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    
      </properties>
    
       
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.4.0.BUILD-SNAPSHOT</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>junit</groupId>
              <artifactId>junit</artifactId>
              <version>3.8.1</version>
               <scope>test</scope>
            </dependency>
        </dependencies>
    
        
        <build>
            <plugins>
                
    
                
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-assembly-plugin</artifactId>
                    <version>2.4.1</version>
                    <configuration>
                        
                        <descriptorRefs>
                            <descriptorRef>jar-with-dependencies</descriptorRef>
                        </descriptorRefs>
                        
                        <archive>
                          <manifest>
                            <mainClass>com.spb.SpringBootDemo.App</mainClass>
                          </manifest>
                        </archive>
    
                    </configuration>
                    <executions>
                      <execution>
                        <id>make-assembly</id>
                         
                        <phase>package</phase> 
                        <goals>
                            <goal>single</goal>
                        </goals>
                      </execution>
                    </executions>
                </plugin>
    
            </plugins>
        </build>
    </project>

6， 运行项目测试：  
![这里写图片描述][SouthEast 2]  
成功:  
![这里写图片描述][SouthEast 3]

[SouthEast]: /images/20220603/2e35f03c87be4ba58011d0acdf00ccc3.png
[SouthEast 1]: /images/20220603/d858b51a136f47faa998754b720eaf50.png
[SouthEast 2]: /images/20220603/1ea7b6ac573e4b25ae2d1fcab06a4b0d.png
[SouthEast 3]: /images/20220603/ad9bc8d6d46944c792cd7a889b9198b5.png