IDEA利用Maven创建spring boot 项目
一、创建maven工程;(jar)
- IDEA->新建项目
- 选择Maven->选择JDK，点击下一步
- 填写Groupid(如：cc.liqingsong),填写Arifactid(如：blog)，填写Version(如：1.0)，点击下一步
- 填写project name:(如：blog),选择project location(如：D盘下blog),点击下一步
二、导入springboot相关依赖
- 在pom.xml添加如下
```
<?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 https://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>2.6.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>17</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<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>
<!--这个插件，可以将应用打包成一个可以执行的jar包-->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
```
三、编写一个主程序
- 在src/main/java下创建cc.liqingsong.MainApplication.java文件
```java
package cc.liqingsong;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
*@SpringBootApplication 来标注一个主程序类，说明这是一个spring boot应用
*/
@SpringBootApplication
public class MainApplication {
// spring应用启动起来
public static void main(String[] args) {
SpringApplication.run(MainApplication.class, args);
}
}
```
四、编写相关的Controller、Service
- 在src/main/java下创建cc.liqingsong下编写controller.HelloController.java文件
```java
package cc.liqingsong.controller;
import org.springframework.stereotype.Controller;
@Controller
public class HelloController {
@ResponseBody
@RequestMapping("/hello")
public String hello() {
return "Hello World！"
}
}
```
五、利用Maven打包部署