使用IDEA建立SpringBoot專案
阿新 • • 發佈:2018-12-31
參考:
慕課網 廖師兄:兩小時學會Springboot
1.開啟IDEA,建立新專案,選擇Spring Initializr
2.輸入Artifact
3.勾選Web
4.點選finish完成
5.進入專案,可以將以下內容刪除
pom.xml檔案:
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.example</groupId> <artifactId>springbootdemo</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>springbootdemo</name> <description>Demo project for Spring Boot</description> <!--起步依賴--> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.2.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <!--開發web專案相關依賴--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!--springboot單元測試--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <!--maven構建--> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
6.建立一個HelloController
7.程式自動生成的SpringbootdemoApplication,會有一個@SpringBootApplication的註解,這個註解用來標明這個類是程式的入口package com.example; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class HelloController { @RequestMapping("/hello") public String hello() { return "hello,this is a springboot demo"; } }
package com.example; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; //入口 @SpringBootApplication public class SpringbootdemoApplication { public static void main(String[] args) { SpringApplication.run(SpringbootdemoApplication.class, args); } }
@SpringBootApplication開啟了Spring的元件掃描和springboot的自動配置功能,相當於將以下三個註解組合在了一起
(1)@Configuration:表名該類使用基於Java的配置,將此類作為配置類
(2)@ComponentScan:啟用註解掃描
(3)@EnableAutoConfiguration:開啟springboot的自動配置功能
8.執行SpringbootdemoApplication類測試:
在位址列中輸入http://localhost:8080/hello
9.使用啟動jar包的方式啟動
(1)首先進入專案所在目錄,如果是mac系統在專案上右鍵,選擇Reveal in Finder,Windows系統在專案上右鍵選擇Show in Explorer,即可開啟專案所在目錄
(2)開啟終端,進入專案所在目錄
cd /Users/shanml/IdeaProjects/SpringbootDemo
輸入mvn install,構建專案
(3)構建成功後,在專案target資料夾下會多出一個jar包
(4)使用java -jar springbootdemo-0.0.1-SNAPSHOT.jar
啟動jar包即可