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SpringBoot源码学习(零) 搭建Springboot源码调试环境

准备环境

若是想将git源码修改记录上传到github，需要将springboot源码fork到本人gitbub。此文是直接下载源码到本地的。

git
jdk1.8+
gradle的压缩包
maven，需配置阿里云仓库
idea 2020.2.1

Springboot下载源码

源码地址

https://github.com/spring-projects/spring-boot

克隆源码

git clone -b 2.2.x https://github.com/spring-projects/spring-boot.git

开始构建

打开idea，【File】-->【Open...】，打开刚才拉取的Springboot源码。

open

检查环境

选择【File】->【project Structure…】

检查Project
检查Model
检查SDKs

修改gradle相关配置

下载Gradle

下载地址: https://gradle.org/next-steps/?version=5.6.4&format=bin

修改配置

修改spring-boot-projectspring-boot-toolsspring-boot-gradle-plugingradlewrappergradle-wrapper.properties文件distributionUrl属性。

distributionUrl=file:///D:/gradle-5.6.4/gradle-5.6.4-bin.zip

注意: gradle版本，Springboot依赖spring5.2.12.RELEASE,spring依赖gradle-5.6.4-bin.zip，选择其他版本可能会导致不兼容问题。可参考此文档: https://docs.gradle.com/enterprise/compatibility

修改spring-boot-projectspring-boot-toolsspring-boot-gradle-pluginuild.gradle文件。

buildscript {
   repositories {
      // 加上阿里云仓库, 记得将此行注释删除
      maven { url 'https://maven.aliyun.com/nexus/content/groups/public/' }
      maven { url 'https://maven.aliyun.com/nexus/content/repositories/jcenter' }
      maven { url "https://repo.spring.io/plugins-release" }
      mavenLocal()
      mavenCentral()
   }
   dependencies {
      classpath("io.spring.javaformat:spring-javaformat-gradle-plugin:0.0.15")
   }
}

repositories {
   // 加上阿里云仓库, 记得将此行注释删除
   maven { url 'https://maven.aliyun.com/nexus/content/groups/public/' }
   maven { url 'https://maven.aliyun.com/nexus/content/repositories/jcenter' }
   maven { url "https://repo.spring.io/plugins-release" }
   mavenLocal()
   mavenCentral()
}

源码编译

编译源码时测试及清理

找到Spring Boot Build(root)

clean

开始编译源码

compile

此时会抛出异常Run spring-javaformat:apply to fix.

解决方案: 控制台执行mvn命令

mvn spring-javaformat:apply

关闭代码审查

编辑spring-boot-projectspring-boot-parentpom.xml，将<disable.checks>false</disable.checks>改为<disable.checks>true</disable.checks>

删除nohttp审查

删除src下checkstyle文件夹
删除pom.xml中

<plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-checkstyle-plugin</artifactId>
   <version>3.1.0</version>
   <dependencies>
      <dependency>
         <groupId>com.puppycrawl.tools</groupId>
         <artifactId>checkstyle</artifactId>
         <version>8.29</version>
      </dependency>
      <dependency>
         <groupId>io.spring.javaformat</groupId>
         <artifactId>spring-javaformat-checkstyle</artifactId>
         <version>${spring-javaformat.version}</version>
      </dependency>
   </dependencies>
   <executions>
      <execution>
         <id>checkstyle-validation</id>
         <phase>validate</phase>
         <configuration>
            <skip>${disable.checks}</skip>
            <configLocation>src/checkstyle/checkstyle.xml</configLocation>
            <suppressionsLocation>src/checkstyle/checkstyle-suppressions.xml</suppressionsLocation>
            <includeTestSourceDirectory>true</includeTestSourceDirectory>
            <propertyExpansion>main.basedir=${main.basedir}</propertyExpansion>
            <encoding>UTF-8</encoding>
         </configuration>
         <goals>
            <goal>check</goal>
         </goals>
      </execution>
      <execution>
         <id>nohttp-checkstyle-validation</id>
         <phase>validate</phase>
         <configuration>
            <skip>${disable.checks}</skip>
            <configLocation>src/checkstyle/nohttp-checkstyle.xml</configLocation>
            <suppressionsLocation>src/checkstyle/nohttp-checkstyle-suppressions.xml</suppressionsLocation>
            <propertyExpansion>main.basedir=${main.basedir}</propertyExpansion>
            <encoding>UTF-8</encoding>
            <sourceDirectories>${basedir}</sourceDirectories>
            <includes>**/*</includes>
            <excludes>**/.git/**/*,**/target/**/,**/.flattened-pom.xml,**/*.class,**/spring-boot-gradle-plugin/build/**,**/spring-boot-gradle-plugin/bin/**</excludes>
         </configuration>
         <goals>
            <goal>check</goal>
         </goals>
         <inherited>false</inherited>
      </execution>
   </executions>
</plugin>

安装到本地仓库

install

给源码添加注释之后，记得重新install(按需install)下，要么debbug调试时会出现与源码行数对应不上的情况。

注意：关闭idea自动导包功能, 此功能会自动合并包，会被spring-javaformat插件拦截导致编译失败。

效果图

Spring源码下载

源码地址

https://github.com/spring-projects/spring-framework

克隆源码

git clone -b 5.2.x https://github.com/spring-projects/spring-framework.git

注意: Springboot依赖于Spring的5.2.12.RELEASE版本。

开始构建

打开idea，【File】-->【Open...】，打开刚才拉取的Spring源码。

修改gradle相关配置

修改配置

修改spring-framework-5.2.12.RELEASEgradlewrappergradle-wrapper.properties文件distributionUrl属性。

distributionUrl=file:///D:/gradle-5.6.4/gradle-5.6.4-bin.zip

修改spring-framework-5.2.12.RELEASEuildSrcuild.gradle文件

repositories {
   // 加上阿里云仓库及本地仓库, 记得将此行注释删除
   maven { url 'https://maven.aliyun.com/nexus/content/groups/public/' }
   maven { url 'https://maven.aliyun.com/nexus/content/repositories/jcenter' }
   maven { url "https://repo.spring.io/plugins-release" }
   mavenLocal()
   mavenCentral()
   gradlePluginPortal()
}

修改spring-framework-5.2.12.RELEASEuild.gradle文件

repositories {
   // 加上阿里云仓库及本地仓库, 记得将此行注释删除
   maven { url 'https://maven.aliyun.com/nexus/content/groups/public/' }
   maven { url 'https://maven.aliyun.com/nexus/content/repositories/jcenter' }
   maven { url "https://repo.spring.io/plugins-release" }
   mavenLocal()
   mavenCentral()
   maven { url "https://repo.spring.io/libs-spring-framework-build" }
}

修改spring-framework-5.2.12.RELEASEsettings.gradle文件

pluginManagement {
   repositories {
      // 加上阿里云仓库及本地仓库, 记得将此行注释删除
      maven { url 'https://maven.aliyun.com/nexus/content/groups/public/' }
      maven { url 'https://maven.aliyun.com/nexus/content/repositories/jcenter' }
      mavenLocal()
      mavenCentral()
      gradlePluginPortal()
      maven { url 'https://repo.spring.io/plugins-release' }
   }
}

刷新maven依赖

排除依赖异常

Could not find javax.servlet-api.jar (javax.servlet:javax.servlet-api:4.0.1).
Searched in the following locations:
    file:/E:/.m2/repository/javax/servlet/javax.servlet-api/4.0.1/javax.servlet-api-4.0.1.jar

解决方案:按照路径删除此依赖重新刷新maven依赖。出现其他依赖包问题，重复此操作。

排除git异常

org.gradle.process.internal.ExecException: Process 'command 'git'' finished with non-zero exit value 128

解决方案: 添加git commit

排除spring-context:test异常

Execution failed for task ':spring-context:test'. > There were failing tests. See the report at: fill

解决方案: import-into-idea.md中已经提示，需先编译./gradlew :spring-oxm:compileTestJava模块,windows中执行gradlew :spring-oxm:compileTestJava。

_Within your locally cloned spring-framework working directory:_

1. Precompile `spring-oxm` with `./gradlew :spring-oxm:compileTestJava`
2. Import into IntelliJ (File -> New -> Project from Existing Sources -> Navigate to directory -> Select build.gradle)
3. When prompted exclude the `spring-aspects` module (or after the import via File-> Project Structure -> Modules)
4. Code away

编译源码

build

删除代码审查

删除spring-framework-5.2.12.RELEASEsrc ohttp文件夹。
删除spring-framework-5.2.12.RELEASEsrccheckstyle文件夹。
删除spring-framework-5.2.12.RELEASEuild.gradle文件中代码审查相关配置。

apply plugin: "checkstyle"

checkstyle {
   toolVersion = "8.38"
   configDir = rootProject.file("src/checkstyle")
}

checkstyle {
   toolVersion = "8.38"
   configDir = rootProject.file("src/checkstyle")
}

checkstyle("io.spring.javaformat:spring-javaformat-checkstyle:0.0.15")

id 'io.spring.nohttp' version '0.0.5.RELEASE'

apply plugin: "io.spring.nohttp"

nohttp {
   source.exclude "**/test-output/**"
   allowlistFile = project.file("src/nohttp/allowlist.lines")
   def rootPath = file(rootDir).toPath()
   def projectDirs = allprojects.collect { it.projectDir } + "${rootDir}/buildSrc"
   projectDirs.forEach { dir ->
      [ 'bin', 'build', 'out', '.settings' ]
         .collect { rootPath.relativize(new File(dir, it).toPath()) }
         .forEach { source.exclude "$it/**" }
      [ '.classpath', '.project' ]
         .collect { rootPath.relativize(new File(dir, it).toPath()) }
         .forEach { source.exclude "$it" }
   }
}

发布到本地maven仓库

publish

关联源码

创建read-spring阅读源码时，需要关联源码，添加注释。添加注释后，需要重新打包发布加注释代码。按需关联。

source

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原文地址：https://www.cnblogs.com/chinda/p/14287146.html