关于java:Idea-搭建Spring源码环境

Idea 搭建Spring源码环境

本篇次要解说如何应用Ideal 搭建Spring的源码环境，想必大家都会多多少少去看过Spring的局部源码，个别咱们都是间接点进某个Spring类而后Idea下面去下载，然而的确比拟麻烦，而且不能增加本人对源码的正文了解，本篇就来解决这个问题，手把手应用Idea 搭建Spring framework ，并且间接在Spring framework我的项目中增加咱们本人的module 来验证环境是否正确。本过程会比拟耗时而且容易出错慢慢来吧。

1. clone spring-framework 我的项目

1.1 找到github spring-framwwork 我的项目

先登录github 找到 spring-framework我的项目

https://github.com/spring-projects

我抉择的是 5.0.x

如果你感觉你网速能够，那你能够间接从 github clone 下来，我这里先把我的项目传到 gitee

1.2 fork 到gitee 码云

拉取你要的分支 git clone -b 分支

2. 查看 import-into-idea.md 文件

在下载的源码中有一个文件是 import-into-idea 的 md文件外面有对于导入 idea须要的注意事项，咱们来关上它

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 issues1. `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 toIntelliJ 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 fromIntelliJ IDEA. Resolving this is a work in progress. If attempting to run all JUnit tests from withinIntelliJ IDEA, you will likely need to set the following VM options to avoid out of memory errors:    -XX:MaxPermSize=2048m -Xmx2048m -XX:MaxHeapSize=2048m4. If you invoke "Rebuild Project" in the IDE, you'll have to generate some testresources of the `spring-oxm` module again (`./gradlew :spring-oxm:compileTestJava`)    ## TipsIn 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.## FAQQ. 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

大抵意思就是

2.1 在源码目录下执行 `./gradlew :spring-oxm:compileTestJava`

2.2 再导入导 idea 中

会开始下载 Gradle 构建工具等，会依据 gradle-wrapper.properties 中的指定版本下载，最好不要批改它的版本

Idea导入抉择文件夹

抉择应用Gradle

静静的期待

2.3 排除 "spring-aspects"

排除了 spring-aspects 我的项目

关上settings.gradle 把 //include "spring-aspects" 正文了

2.4 下载完依赖后（耗时可能要个15-30分钟）

能够发现依赖都加载实现后，idea 就能辨认咱们导入的 spring我的项目了，并且图标都变亮了

3.引入自定义模块放入SpringFramework 我的项目下

上面就是来验证咱们的源码环境是否失常，须要引入一个自定义的模块，并且依赖 core bean 等spring依赖

3.1 新建module

右击我的项目 -》 new -》 module 抉择 gradle 我的项目

3.2 增加依赖

在新建的module下关上 build.gradle 引入上面的依赖 spring-beans , spring-context , spring-core , spring-expression

dependencies {    testCompile group: 'junit', name: 'junit', version: '4.12'    compile(project(":spring-beans"))    compile(project(":spring-context"))    compile(project(":spring-core"))    compile(project(":spring-expression"))}

3.3 查看 module 是否被引入

关上settings.gradle 增加 include 'spring-demo' ，默认应用我说的创立module 形式会主动增加的最好检查一下

3.4 编写测试代码

3.4.1 定义Person类

package com.johnny.bean;/** * @author johnny * @create 2020-09-07 下午11:22 **/public class Person {   private String name;   private int age;   @Override   public String toString() {      return "Person{" +            "name='" + name + '\'' +            ", age=" + age +            '}';   }   public String getName() {      return name;   }   public void setName(String name) {      this.name = name;   }   public int getAge() {      return age;   }   public void setAge(int age) {      this.age = age;   }}

3.4.2 resources 下新建 demo.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">   <bean class="com.johnny.bean.Person" id="person">      <property name="name" value="johnny"/>      <property name="age" value="10"/>   </bean></beans>

3.4.3 新建main 加载xml 并且从容器中获取 bean

package com.johnny.bean;import org.springframework.context.support.ClassPathXmlApplicationContext;/** * @author johnny * @create 2020-09-07 下午11:24 **/public class DemoMain {   public static void main(String[] args) {      ClassPathXmlApplicationContext classPathXmlApplicationContext = new ClassPathXmlApplicationContext("demo.xml");      Person person = classPathXmlApplicationContext.getBean(Person.class);      System.out.println(person);   }}

能够看到能获取到容器中的Bean ，示意咱们的spring环境搭建正确

总结

本篇次要解说如何应用idea 搭建spring源码环境，过程其实很耗时而且特地容易出错，总结就是 1. clone 代码，2.进入源码目录执行 ./gradlew :spring-oxm:compileTestJava 3.导入idea 中 4. 排除 exclude the spring-aspects module 5.自定义module 验证环境，祝福大家环境搭建顺利。。。最好开个墙

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