Springboot源码怎么分析项目结构

Springboot源码怎么分析项目结构，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。

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Springboot源码分析之项目结构

摘要:

• 无论是从IDEA还是其他的SDS开发工具亦或是https://start.spring.io/ 进行解压,我们都会得到同样的一个pom.xml文件 4.0.0 org.springframework.boot spring-boot-starter-parent 2.1.6.RELEASE

      com.github.dqqzj
      springboot
      0.0.1-SNAPSHOT
      springboot
      jar
      Demo project for Spring Boot
  
      
          1.8
      
  
      
          
              org.springframework.boot
              spring-boot-starter
          
          
              org.springframework.boot
              spring-boot-starter-test
              test
          
      
  
      
          
              
                  org.springframework.boot
                  spring-boot-maven-plugin
              
          
      
  
  

parent标签的含义

• 找到本地仓库的spring-boot-starter-parent 坐标

  4.0.0
  
    org.springframework.boot
    spring-boot-dependencies
    2.1.6.RELEASE
    ../../spring-boot-dependencies
  
  spring-boot-starter-parent
  pom
  Spring Boot Starter Parent
  Parent pom providing dependency and plugin management for applications
                built with Maven
  https://projects.spring.io/spring-boot/#/spring-boot-starter-parent
  
    UTF-8
    1.8
    @
    ${java.version}
    UTF-8
    ${java.version}
  
  
    
      
        true
        ${basedir}/src/main/resources
        
          **/application*.yml
          **/application*.yaml
          **/application*.properties
        
      
      
        ${basedir}/src/main/resources
        
          **/application*.yml
          **/application*.yaml
          **/application*.properties
        
      
    
    
      
        
          org.jetbrains.kotlin
          kotlin-maven-plugin
          ${kotlin.version}
          
            
              compile
              compile
              
                compile
              
            
            
              test-compile
              test-compile
              
                test-compile
              
            
          
          
            ${java.version}
            true
          
        
        
          maven-compiler-plugin
          
            true
          
        
        
          maven-failsafe-plugin
          
            
              
                integration-test
                verify
              
            
          
          
            ${project.build.outputDirectory}
          
        
        
          maven-jar-plugin
          
            
              
                ${start-class}
                true
              
            
          
        
        
          maven-war-plugin
          
            
              
                ${start-class}
                true
              
            
          
        
        
          org.codehaus.mojo
          exec-maven-plugin
          
            ${start-class}
          
        
        
          maven-resources-plugin
          
            
              ${resource.delimiter}
            
            false
          
        
        
          pl.project13.maven
          git-commit-id-plugin
          
            
              
                revision
              
            
          
          
            true
            yyyy-MM-dd'T'HH:mm:ssZ
            true
            ${project.build.outputDirectory}/git.properties
          
        
        
          org.springframework.boot
          spring-boot-maven-plugin
          
            
              repackage
              
                repackage
              
            
          
          
            ${start-class}
          
        
        
          maven-shade-plugin
          
            
              package
              
                shade
              
              
                
                  
                    META-INF/spring.handlers
                  
                  
                    META-INF/spring.factories
                  
                  
                    META-INF/spring.schemas
                  
                  
                  
                    ${start-class}
                  
                
              
            
          
          
            
              org.springframework.boot
              spring-boot-maven-plugin
              2.1.6.RELEASE
            
          
          
            true
            true
            
              
                *:*
                
                  META-INF/*.SF
                  META-INF/*.DSA
                  META-INF/*.RSA
                
              
            
          
        
        
          org.eclipse.m2e
          lifecycle-mapping
          1.0.0
          
            
              
                
                  
                    org.codehaus.mojo
                    flatten-maven-plugin
                    [1.0.0,)
                    
                      flatten
                    
                  
                  
                    
                  
                
                
                  
                    org.apache.maven.plugins
                    maven-checkstyle-plugin
                    [3.0.0,)
                    
                      check
                    
                  
                  
                    
                  
                
              
            
          
        
      
    
  

关注点

    
        org.springframework.boot
        spring-boot-dependencies
        2.1.6.RELEASE
        ../../spring-boot-dependencies
      
    ```

说明我们的工程可以进行改造进行替换掉原来工程的`parent`标签.

-     
                org.springframework.boot
                spring-boot-maven-plugin
                
                  
                    repackage
                    
                      repackage
                    
                  
                
                
                  ${start-class}
                
              
 ` repackage`必须要有否则打jar包时候无法正常启动.
 ![file](/upload/otherpic49/779545.jpg)

在配置文件加上`repackage`即可

    
            
                
                    org.springframework.boot
                    spring-boot-maven-plugin
                    
                        
                            
                                repackage
                            
                        
                    
                
            
        

`IDEA`自带`maven`工具

![file](/upload/otherpic49/779546.jpg)

`mvnw`是基于`linux`的`shell`脚本命令

`mvnw.cmd`是基于`windows`的脚本命令

`.mvn`包含了` maven`下载路径以及版本等信息

也就是说我们完全不用自己下载`maven`而是可以直接使用`IDEA`给我们提供的工具即可，只不过通常不会这么做。
#### `repackage`的作用

- [官方文档](https://docs.spring.io/spring-boot/docs/current/maven-plugin/repackage-mojo.html)
- 正常情况下打包会生成`springboot-0.0.1-SNAPSHOT.jar`,`original,springboot-0.0.1-SNAPSHOT.jar`这样的2个文件，而`repackage`的作用就是将`springboot-0.0.1-SNAPSHOT.jar.original`重新打包为我们可以执行的`springboot-0.0.1-SNAPSHOT.jar`

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