Gradle
2. 获取源码从github https://github.com/spring-projects/spring-framework 上 Fork 出属于自己的仓库。如果懒得这么做也可以直接Clone or download下载源码包。
3.使用IDEA编译源码首先打开IDEA，点击File —> Open 选择刚才源码的下载路径进行导入
点击“ok”按钮会弹出以下配置框，主要是配置JDK位置，和Global位置（如果没有下载idea会自动帮你装配Global）
点击确认后，就会打开Spring 源码，idea下面会显示正在导入包中（导包过程很慢请耐心等待）
所有关联包导入完毕后需要Build下项目，导入项目完成（如图操作）
经过上面的步骤之后基本上就可以直接运行 spring 的 Testcase 了 可以先选择调试 “XmlBeanDefinitionReaderTests” 类（作用： 解析 XML 配置文件成对应的 BeanDefinition 们的流程）。有可能会遇到如下的错
Error:Kotlin: [Internal Error] java.lang.AbstractMethodError: org.jetbrains.kotlin.scripting.compiler.plugin.ScriptingCompilerConfigurationComponentRegistrar.registerProjectComponents(Lcom/intellij/mock/MockProject;Lorg/jetbrains/kotlin/config/CompilerConfiguration;)V at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment.<init>(KotlinCoreEnvironment.kt:173) at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment.<init>(KotlinCoreEnvironment.kt:114) at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment$Companion.createForProduction(KotlinCoreEnvironment.kt:401) at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.createCoreEnvironment(K2JVMCompiler.kt:282) at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.createEnvironmentWithScriptingSupport(K2JVMCompiler.kt:272) at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:151) at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:61) at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.java:107) at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.java:51) at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:92) at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$$inlined$ifAlive$lambda$1.invoke(CompileServiceImpl.kt:380) at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$$inlined$ifAlive$lambda$1.invoke(CompileServiceImpl.kt:96) at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:892) at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:96) at org.jetbrains.kotlin.daemon.common.DummyProfiler.withMeasure(PerfUtils.kt:137) at org.jetbrains.kotlin.daemon.CompileServiceImpl.checkedCompile(CompileServiceImpl.kt:919) at org.jetbrains.kotlin.daemon.CompileServiceImpl.doCompile(CompileServiceImpl.kt:891) at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:378) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:346) at sun.rmi.transport.Transport$1.run(Transport.java:200) at sun.rmi.transport.Transport$1.run(Transport.java:197) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:196) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:683) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)