如何使用不同的方式創建SpringBoot項目

#如何使用多種方式創建Spring Boot項目

PS: 最近在整理Spring Boot相關方面的知識結構，知識點，尊重作者的勞動成果，此文爲轉載整理，作者原文鏈接爲☞原文

使用Spring Boot創建項目有三種方式:一是通過在官網在線創建，二是通過idea和STS(eclipse的一個插件，全名spring tools suit，這款集成了spring相關的組件)，三是通過創建普通的maven工程，添加註解即可，下面來具體看看

• 1、通過Spring Boot官網在線創建
• 2、通過idea或者STS工具創建Spring Boot項目
• 3、創建普通的maven項目，使用註解生成Spring Boot項目
• 4、使用原生的Maven命令創建SpringBoot項目。

一、通過Spring Boot官網在線創建；

這裏提供一個在線生成springboot項目的地址，Spring Boot官網

這裏以java爲例，生成一個springboot項目做簡單的介紹

點開options，我們來看看

添加依賴，可以搜索，也可以挨個的查找.

將下載好的springboot項目解壓後放到你的idea工作空間中，在idea中導入即可

來看看項目結構

至此就完後才能了在線創建springboot項目了

---

##2、通過idea或者STS工具創建Spring Boot項目

打開Idea，點擊file——>new——>project

選擇Spring Initializr，點擊下一步

項目構建信息

項目目錄結構

至此創建完畢，STS類似，這裏不做過多介紹;

---

##3、創建普通的maven項目，使用註解生成Spring Boot項目

點擊file下的new，然後選擇project

選擇maven，點擊下一步

填寫項目名稱以及組織ID，點擊下一步

項目結構

現在還是一個簡單的maven項目，還不是springboot項目，我們需要在pom.xml文件中添加依賴

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.4.RELEASE</version>
</parent>
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>

pom.xml

<?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.zhouym</groupId>
    <artifactId>Heber</artifactId>
    <version>1.0-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.4.RELEASE</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

</project>

添加成功後，再在 java 目錄下創建包，包中創建一個名爲 App 的啓動類，如下：

package com.zhouym.heber;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * 〈〉
 *
 * @author zhouym
 * @create 2019/8/5
 * @since 1.0.0
 */

@EnableAutoConfiguration
@RestController
public class App {
    public static void main(String[] args) {
        SpringApplication.run(App.class,args);
    }

    @GetMapping(value = "/query",produces = "text/html;charset=UTF-8")
    public String query(){

        return "hello,中國";
    }
}

@EnableAutoConfiguration 註解表示開啓自動化配置。

然後執行這裏的 main 方法就可以啓動一個 Spring Boot 工程了。

來看看結果

---

4、補充： 以Maven命令的形式創建Spring Boot項目；

1)、命令參數解析：

以下優先分析一下Maven的相關命令和參數：

mvn archetype:generate：

Maven插件原型是一個Maven項目模板工具包。 

####-DgroupId　　　　　　　　  
包名

####-DartifactId　　　　　　　　
項目名

####-DarchetypeArtifactId　　
類型maven-archetype-quickstart,創建一個Java Project,maven-archetype-webapp,創建一個Web Project

####-DinteractiveMode
是否使用交互模式,如果爲false,非交互式的命令後直接創建,否則會有控制檯提示輸入操作

2）、使用命令參數創建項目

指定項目創建的目錄；

本文指定項目創建的目錄爲: 
N:\技術學習整理\技術學習總結整理\Spring Boot學習總結整理——博客\項目目錄

輸入mvn命令

mvn archetype:generate -DinteractiveMode=false -DgroupId=com.xcy -DartifactId=springboot -Dversion=1.0.0-SNAPSHOT

執行命令日誌爲

N:\技術學習整理\技術學習總結整理\Spring Boot學習總結整理——博客\項目目錄>mvn archetype:generate -DinteractiveMode=false -DgroupId=com.xcy -DartifactId=springboot -Dversion=1.0.0-SNAPSHOT
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[INFO] ------------------< org.apache.maven:standalone-pom >-------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] --------------------------------[ pom ]---------------------------------
[INFO]
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[INFO]
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[INFO]
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Downloaded from nexus-aliyun: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/maven-parent/4/maven-parent-4.pom (10.0 kB at 12 kB/s)
Downloading from nexus-aliyun: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/archetypes/maven-archetype-quickstart/1.0/maven-archetype-quickstart-1.0.jar
Downloaded from nexus-aliyun: http://maven.aliyun.com/nexus/content/groups/public/org/apache/maven/archetypes/maven-archetype-quickstart/1.0/maven-archetype-quickstart-1.0.jar (4.3 kB at 8.4 kB/s)
[INFO] ----------------------------------------------------------------------------
[INFO] Using following parameters for creating project from Old (1.x) Archetype: maven-archetype-quickstart:1.0
[INFO] ----------------------------------------------------------------------------
[INFO] Parameter: basedir, Value: N:\技術學習整理\技術學習總結整理\Spring Boot學習總結整理——博客\項目目錄
[INFO] Parameter: package, Value: com.xcy
[INFO] Parameter: groupId, Value: com.xcy
[INFO] Parameter: artifactId, Value: springboot
[INFO] Parameter: packageName, Value: com.xcy
[INFO] Parameter: version, Value: 1.0.0-SNAPSHOT
[INFO] project created from Old (1.x) Archetype in dir: N:\技術學習整理\技術學習總結整理\Spring Boot學習總結整理——博客\項目目錄\springboot
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 23.110 s
[INFO] Finished at: 2020-06-20T14:33:04+08:00
[INFO] ------------------------------------------------------------------------
[0m[0m
N:\技術學習整理\技術學習總結整理\Spring Boot學習總結整理——博客\項目目錄>

項目創建成功之後使用IDEA導入剛剛創建的項目

如果導入項目顯示不出項目的目錄 Ctrl+Shift+Alt+S 選擇Modules→Sources→Apply→OK

在pom文件裏添加Spring Boot依賴

對於SpingBoot測試Junit至少是4.1-4.2以上的版本,所以把版本號刪除默認的就行

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.0.RELEASE</version>
</parent>
<!--Spring Boot WEB依賴-->
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>

將App改變爲啓動類

spring boot提供了一個統一的註解**@SpringBootApplication。**
@SpringBootApplication = (默認屬性)@Configuration + @EnableAutoConfiguration + @ComponentScan

package com.xcy;

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

/**
 * Maven命令行創建Spring Boot項目啓動類
 *
 */
@SpringBootApplication
public class App 
{
    public static void main( String[] args )
    {
        System.out.println( "Hello World!" );
        SpringApplication.run(App.class,args);
    }
}

測試

必須要寫在App啓動類一個包下才能夠掃描到
@RestController註解相當於@ResponseBody ＋ @Controller合在一起的作用。

package com.xcy.testdemo;

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

@RestController
public class TestController {

    @GetMapping("hello")
    public String index(){
        return "HelloWorld~";
    }
}

項目啓動日誌

使用postmain工具測試

在這裏再次分享一篇寫的不錯的關於SpringBoot項目創建的博客☞ SpringBoot項目創建方式。