使用IDEA创建SpringBoot项目

参考：

慕课网 廖师兄：两小时学会Springboot

http://www.imooc.com/learn/767 

 

1.打开IDEA,创建新项目，选择Spring Initializr

 

2.输入Artifact

 

 

3.勾选Web

 

4.点击finish完成

 

5.进入项目，可以将以下内容删除

pom.xml文件：

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1. <code class="language-html"><?xml version="1.0" encoding="UTF-8"?>  
2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
3.     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">  
4.     <modelVersion>4.0.0</modelVersion>  
5.   
6.     <groupId>com.example</groupId>  
7.     <artifactId>springbootdemo</artifactId>  
8.     <version>0.0.1-SNAPSHOT</version>  
9.     <packaging>jar</packaging>  
10.   
11.     <name>springbootdemo</name>  
12.     <description>Demo project for Spring Boot</description>  
13.   
14.     <!--起步依赖-->  
15.     <parent>  
16.         <groupId>org.springframework.boot</groupId>  
17.         <artifactId>spring-boot-starter-parent</artifactId>  
18.         <version>1.5.2.RELEASE</version>  
19.         <relativePath/> <!-- lookup parent from repository -->  
20.     </parent>  
21.   
22.     <properties>  
23.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
24.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>  
25.         <java.version>1.8</java.version>  
26.     </properties>  
27.   
28.     <dependencies>  
29.         <!--开发web项目相关依赖-->  
30.         <dependency>  
31.             <groupId>org.springframework.boot</groupId>  
32.             <artifactId>spring-boot-starter-web</artifactId>  
33.         </dependency>  
34.         <!--springboot单元测试-->  
35.         <dependency>  
36.             <groupId>org.springframework.boot</groupId>  
37.             <artifactId>spring-boot-starter-test</artifactId>  
38.             <scope>test</scope>  
39.         </dependency>  
40.     </dependencies>  
41.   
42.     <!--maven构建-->  
43.     <build>  
44.         <plugins>  
45.             <plugin>  
46.                 <groupId>org.springframework.boot</groupId>  
47.                 <artifactId>spring-boot-maven-plugin</artifactId>  
48.             </plugin>  
49.         </plugins>  
50.     </build>  
51.   
52.   
53. </project>  
54. </code>  

1. <?xml version="1.0" encoding="UTF-8"?>

2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

3. xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

4. <modelVersion>4.0.0</modelVersion>

5.  

6. <groupId>com.example</groupId>

7. <artifactId>springbootdemo</artifactId>

8. <version>0.0.1-SNAPSHOT</version>

9. <packaging>jar</packaging>

10.  

11. <name>springbootdemo</name>

12. <description>Demo project for Spring Boot</description>

13.  

14. <!--起步依赖-->

15. <parent>

16. <groupId>org.springframework.boot</groupId>

17. <artifactId>spring-boot-starter-parent</artifactId>

18. <version>1.5.2.RELEASE</version>

19. <relativePath/> <!-- lookup parent from repository -->

20. </parent>

21.  

22. <properties>

23. <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

24. <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

25. <java.version>1.8</java.version>

26. </properties>

27.  

28. <dependencies>

29. <!--开发web项目相关依赖-->

30. <dependency>

31. <groupId>org.springframework.boot</groupId>

32. <artifactId>spring-boot-starter-web</artifactId>

33. </dependency>

34. <!--springboot单元测试-->

35. <dependency>

36. <groupId>org.springframework.boot</groupId>

37. <artifactId>spring-boot-starter-test</artifactId>

38. <scope>test</scope>

39. </dependency>

40. </dependencies>

41.  

42. <!--maven构建-->

43. <build>

44. <plugins>

45. <plugin>

46. <groupId>org.springframework.boot</groupId>

47. <artifactId>spring-boot-maven-plugin</artifactId>

48. </plugin>

49. </plugins>

50. </build>

51.  
52.  

53. </project>

 

6.创建一个HelloController

 

1. package com.example;

2.  

3. import org.springframework.web.bind.annotation.RequestMapping;

4. import org.springframework.web.bind.annotation.RestController;

5.  

6. @RestController

7. public class HelloController {

8.  

9. @RequestMapping("/hello")

10. public String hello() {

11. return "hello,this is a springboot demo";

12. }

13. }

 

 

7.程序自动生成的SpringbootdemoApplication，会有一个@SpringBootApplication的注解，这个注解用来标明这个类是程序的入口

 

1. package com.example;

2.  

3. import org.springframework.boot.SpringApplication;

4. import org.springframework.boot.autoconfigure.SpringBootApplication;

5.  

6. //入口

7. @SpringBootApplication

8. public class SpringbootdemoApplication {

9.  

10. public static void main(String[] args) {

11. SpringApplication.run(SpringbootdemoApplication.class, args);

12. }

13. }

 

@SpringBootApplication开启了Spring的组件扫描和springboot的自动配置功能，相当于将以下三个注解组合在了一起

（1）@Configuration：表名该类使用基于Java的配置,将此类作为配置类

（2）@ComponentScan：启用注解扫描

（3）@EnableAutoConfiguration：开启springboot的自动配置功能

 

8.运行SpringbootdemoApplication类

 

测试：

在地址栏中输入http://localhost:8080/hello

 

 

9.使用启动jar包的方式启动

（1）首先进入项目所在目录，如果是mac系统在项目上右键，选择Reveal in Finder,Windows系统在项目上右键选择Show in Explorer，即可打开项目所在目录

（2）打开终端，进入项目所在目录

 

     cd /Users/shanml/IdeaProjects/SpringbootDemo

     输入mvn install,构建项目

（3）构建成功后，在项目target文件夹下会多出一个jar包

（4）使用java -jar springbootdemo-0.0.1-SNAPSHOT.jar 

     启动jar包即可

 

 

转自:https://blog.youkuaiyun.com/lom9357bye/article/details/69677120