springboot原始碼學習1 springboot2.3.4原始碼編譯
一 下載原始碼
方式1 碼雲下載
碼雲是國內的倉庫，極速下載是github上面的知名專案映象，可以快速下載，找到內容後，點選main切換分支，找到自己想看的分支
方式二：github下載
不管是什麼方式下載，建議下release版本，避免去踩一些不必要的坑，解決坑是一個體力活很費時費力，本次我下載的是2.3.4版本
二 下載gradle
下載下來zip就可以了
三 修改配置檔案編譯
修改配置檔案主要是修改映象源和一些踩到的編譯坑：
1 gradle\wrapper中的配置檔案
將檔案內容 修改成自己的目錄，就是上面下載的zip gradle目錄就可以了
distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists distributionUrl=file:///D:/java/gradle-6.6.1-all.zip zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists
2 buildSrc下的build.gradle
`plugins {
id "java-gradle-plugin"
//可能是原有的編譯環境，註釋掉，否則報錯
//id "io.spring.javaformat" version "${javaFormatVersion}"
id "checkstyle"
}
repositories {
maven { url 'https://maven.aliyun.com/nexus/content/groups/public/' }
maven { url 'https://maven.aliyun.com/nexus/content/repositories/jcenter
maven { url "https://repo.spring.io/plugins-release" }
mavenCentral()
gradlePluginPortal()
maven { url "https://repo.spring.io/release" }
}
sourceCompatibility = 1.8
targetCompatibility = 1.8
.......`
3 buildSrc下的settings.gradle
pluginManagement {
repositories {
maven { url 'https://maven.aliyun.com/nexus/content/groups/public/
maven { url 'https://maven.aliyun.com/nexus/content/repositories/jcenter' }
maven { url "https://repo.spring.io/plugins-release" }
mavenCentral()
gradlePluginPortal()
}
resolutionStrategy {
eachPlugin {
if (requested.id.id == "io.spring.javaformat") {
useModule "io.spring.javaformat:spring-javaformat-gradle-plugin:${requested.version}"
}
}
}
}`
4 buildSrc下的gradle.properties
`javaFormatVersion=0.0.22
新增如下配置，解決heap堆記憶體空間不夠問題
gradlePropertiesProp=gradlePropertiesValue
sysProp=shouldBeOverWrittenBySysProp
systemProp.system=systemValue
org.gradle.caching=false
org.gradle.jvmargs=-Xms2048m -Xmx4096m
org.gradle.parallel=true
org.gradle.daemon=true
org.gradle.configureondemand=true`
5 根目錄下build.gradle
`// 放在第一行
buildscript {
repositories {
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" }
}
}
allprojects {
group "org.springframework.boot"
repositories {
maven { url 'https://maven.aliyun.com/nexus/content/groups/public/' }
maven { url 'https://maven.aliyun.com/nexus/content/repositories/jcenter' }
mavenCentral()
if (!version.endsWith('RELEASE')) {
maven { url "https://repo.spring.io/milestone" }
}
if (version.endsWith('BUILD-SNAPSHOT')) {
maven { url "https://repo.spring.io/snapshot" }
}
}
configurations.all {
resolutionStrategy.cacheChangingModulesFor 60, "minutes"
}
}`
6 根目錄下seetings.gradle
pluginManagement { repositories { maven { url 'https://maven.aliyun.com/nexus/content/groups/public/' } maven { url 'https://maven.aliyun.com/nexus/content/repositories/jcenter' } mavenCentral() gradlePluginPortal() maven { url 'https://repo.spring.io/plugins-release' } if (version.endsWith('BUILD-SNAPSHOT')) { maven { url "https://repo.spring.io/snapshot" } } } resolutionStrategy { eachPlugin { if (requested.id.id == "org.jetbrains.kotlin.jvm") { useVersion "${kotlinVersion}" } if (requested.id.id == "org.jetbrains.kotlin.plugin.spring") { useVersion "${kotlinVersion}" } } } }