如何使用不同的方式创建SpringBoot项目

#如何使用多种方式创建Spring Boot项目

PS: 最近在整理Spring Boot相关方面的知识结构，知识点，尊重作者的劳动成果，此文为转载整理，作者原文链接为☞原文

使用Spring Boot创建项目有三种方式:一是通过在官网在线创建，二是通过idea和STS(eclipse的一个插件，全名spring tools suit，这款集成了spring相关的组件)，三是通过创建普通的maven工程，添加注解即可，下面来具体看看

• 1、通过Spring Boot官网在线创建
• 2、通过idea或者STS工具创建Spring Boot项目
• 3、创建普通的maven项目，使用注解生成Spring Boot项目
• 4、使用原生的Maven命令创建SpringBoot项目。

一、通过Spring Boot官网在线创建；

这里提供一个在线生成springboot项目的地址，Spring Boot官网

这里以java为例，生成一个springboot项目做简单的介绍

点开options，我们来看看

添加依赖，可以搜索，也可以挨个的查找.

将下载好的springboot项目解压后放到你的idea工作空间中，在idea中导入即可

来看看项目结构

至此就完后才能了在线创建springboot项目了

---

##2、通过idea或者STS工具创建Spring Boot项目

打开Idea，点击file——>new——>project

选择Spring Initializr，点击下一步

项目构建信息

项目目录结构

至此创建完毕，STS类似，这里不做过多介绍;

---

##3、创建普通的maven项目，使用注解生成Spring Boot项目

点击file下的new，然后选择project

选择maven，点击下一步

填写项目名称以及组织ID，点击下一步

项目结构

现在还是一个简单的maven项目，还不是springboot项目，我们需要在pom.xml文件中添加依赖

<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>

添加成功后，再在 java 目录下创建包，包中创建一个名为 App 的启动类，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,中国";
    }
}

@EnableAutoConfiguration 注解表示开启自动化配置。

然后执行这里的 main 方法就可以启动一个 Spring Boot 工程了。

来看看结果

---

4、补充： 以Maven命令的形式创建Spring Boot项目；

1)、命令参数解析：

以下优先分析一下Maven的相关命令和参数：

mvn archetype:generate：

Maven插件原型是一个Maven项目模板工具包。 

####-DgroupId　　　　　　　　  
包名

####-DartifactId　　　　　　　　
项目名

####-DarchetypeArtifactId　　
类型maven-archetype-quickstart,创建一个Java Project,maven-archetype-webapp,创建一个Web Project

####-DinteractiveMode
是否使用交互模式,如果为false,非交互式的命令后直接创建,否则会有控制台提示输入操作

2）、使用命令参数创建项目

指定项目创建的目录；

本文指定项目创建的目录为: 
N:\技术学习整理\技术学习总结整理\Spring Boot学习总结整理——博客\项目目录

输入mvn命令

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

执行命令日志为

N:\技术学习整理\技术学习总结整理\Spring Boot学习总结整理——博客\项目目录>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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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:\技术学习整理\技术学习总结整理\Spring Boot学习总结整理——博客\项目目录
[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:\技术学习整理\技术学习总结整理\Spring Boot学习总结整理——博客\项目目录\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:\技术学习整理\技术学习总结整理\Spring Boot学习总结整理——博客\项目目录>

项目创建成功之后使用IDEA导入刚刚创建的项目

如果导入项目显示不出项目的目录 Ctrl+Shift+Alt+S 选择Modules→Sources→Apply→OK

在pom文件里添加Spring Boot依赖

对于SpingBoot测试Junit至少是4.1-4.2以上的版本,所以把版本号删除默认的就行

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

将App改变为启动类

spring boot提供了一个统一的注解**@SpringBootApplication。**
@SpringBootApplication = (默认属性)@Configuration + @EnableAutoConfiguration + @ComponentScan

package com.xcy;

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

/**
 * Maven命令行创建Spring Boot项目启动类
 *
 */
@SpringBootApplication
public class App 
{
    public static void main( String[] args )
    {
        System.out.println( "Hello World!" );
        SpringApplication.run(App.class,args);
    }
}

测试

必须要写在App启动类一个包下才能够扫描到
@RestController注解相当于@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~";
    }
}

项目启动日志

使用postmain工具测试

在这里再次分享一篇写的不错的关于SpringBoot项目创建的博客☞ SpringBoot项目创建方式。