一、安装gradle
下载gradle：https://gradle.org/next-steps/?version=4.8.1&format=all

配置环境变量
变量名：GRADLE_HOME
变量值：F:\yyao\gradle-5.3（gradle安装路径）

path添加：`%GRADLE_HOME%\bin；`
验证是否安装成功：`gradle -v`

二、将spring源码转换成可以导入的源码

因为直接下载下来的代码不能直接导入到IDEA 或 eclipse 里面，需要做一个转换。
导入eclipse可以查看import-into-eclipse.md
```

Spring Framework - Eclipse/STS Project Import Guide

This document will guide you through the process of importing the Spring Framework
projects into Eclipse or the Spring Tool Suite (STS). It is recommended that you have a
recent version of Eclipse or STS. As a bare minimum you will need Eclipse with full Java
8 support, the AspectJ Development Tools (AJDT), and the Groovy Compiler.

The following instructions have been tested against
[Spring Tool Suite](https://spring.io/tools) (_STS_) 3.9.4 and 4.0.0.M11 with
[Eclipse Buildship](https://projects.eclipse.org/projects/tools.buildship) (Eclipse
Plug-ins for Gradle). The instructions should work with the latest Eclipse distribution
as long as you install
[Buildship](https://marketplace.eclipse.org/content/buildship-gradle-integration). Note
that STS 4 comes with Buildship preinstalled.

## Steps

_Within your locally cloned `spring-framework` working directory:_

1. Precompile `spring-oxm` with `./gradlew :spring-oxm:compileTestJava`
2. Import into Eclipse (File -> Import -> Gradle -> Existing Gradle Project -> Navigate
   to directory -> Select Finish)
3. If prompted, exclude the `spring-aspects` module (or after the import by closing or
   deleting the project)
4. In the `spring-oxm` project, add the `jaxb` folder in
   `build/generated-sources` to the build path (right click on them and select
   `Build Path -> Use as Source Folder`)
5. To apply project specific settings run `./gradlew eclipseBuildship`
7. Code away

## Known Issues

1. `spring-core` and `spring-oxm` should be pre-compiled due to repackaged dependencies.
  - See `*RepackJar` tasks in the build.
2. `spring-aspects` does not compile due to references to aspect types unknown to Eclipse.
  - If you install [AJDT](https://www.eclipse.org/ajdt/downloads/) into Eclipse it should
    work.
3. While JUnit tests pass from the command line with Gradle, some may fail when run from
   the IDE.
  - Resolving this is a work in progress.
  - If attempting to run all JUnit tests from within the IDE, you will likely need to set
    the following VM options to avoid out of memory errors:
    `-XX:MaxPermSize=2048m -Xmx2048m -XX:MaxHeapSize=2048m`

## Tips

In any case, please do not check in your own generated `.classpath` file, `.project`
file, or `.settings` folder. You'll notice these files are already intentionally in
`.gitignore`. The same policy holds for IDEA metadata.

    导入idea可以查看import-into-idea.md

The following has been tested against IntelliJ IDEA 2016.2.2

## Steps

_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

## Known issues

1. `spring-core` and `spring-oxm` should be pre-compiled due to repackaged dependencies.
See `*RepackJar` tasks in the build and https://youtrack.jetbrains.com/issue/IDEA-160605).
2. `spring-aspects` does not compile due to references to aspect types unknown to
IntelliJ IDEA. See https://youtrack.jetbrains.com/issue/IDEA-64446 for details. In the meantime, the
'spring-aspects' can be excluded from the project to avoid compilation errors.
3. While JUnit tests pass from the command line with Gradle, some may fail when run from
IntelliJ IDEA. Resolving this is a work in progress. If attempting to run all JUnit tests from within
IntelliJ IDEA, you will likely need to set the following VM options to avoid out of memory errors:
    -XX:MaxPermSize=2048m -Xmx2048m -XX:MaxHeapSize=2048m
4. If you invoke "Rebuild Project" in the IDE, you'll have to generate some test
resources of the `spring-oxm` module again (`./gradlew :spring-oxm:compileTestJava`)    


## Tips

In any case, please do not check in your own generated .iml, .ipr, or .iws files.
You'll notice these files are already intentionally in .gitignore. The same policy goes for eclipse metadata.

## FAQ

Q. What about IntelliJ IDEA's own [Gradle support](https://confluence.jetbrains.net/display/IDEADEV/Gradle+integration)?

A. Keep an eye on https://youtrack.jetbrains.com/issue/IDEA-53476

cmd命令行运行：

F:\yyao\website\tools\spring-framework>gradlew.bat  :spring-oxm:compileTestJava

```