[自编号1-2]将spring framework源码导入Spring Tool Suite中

先讲基本步骤，如下：

1. 去GitHub中下载spring framework的源码，https://github.com/spring-projects/spring-framework/releases
2. 下载3.2.X其中的一个版本; 
3. 安装Gradle软件，官网下载，解压即可，设置GRADLE_HOME,和PATH。
4. 命令行中运行gradle -v，检查一下是否正确安装配置；
5. 命令行中运行spring framework根目录下的import-into-eclipse.bat
6. 连续两次回车，就可以开始自动构建；
7. 中间出现停止不前的情况里，按ctrl+c终止，再运行就可以进行下去；
8. 过程需要花些时间（几个小时都有可能），视下载各种依赖jar包和dom文件的速度而定；
9. 在Eclipse菜单File->import选择General下面的Exsiting projects into workspace，这样就导入完成了。

如果你按上述步骤能一次成功的话，那不仅是你运气，而且RP极高。反正我没有，而且还折腾了好多次才成功能。

问题有以下几个：

• 问题一：spring-framework-4.0.0.M3要用jdk1.8

如果你习愦于什么都下最新版的，那么你肯定想都没想就下了spring-framework-4.0.0.M3，而且又那么不好采，正好没看README，那么问题马上就来了，直接报"-XX:MaxMetaspaceSize=1024m"及"could not create the java Virtual machine"的错误。

查看build.gradle和gradlew.bat中，可以找出原因：

build.gradle中：

compileJava {
        sourceCompatibility=1.6
        targetCompatibility=1.6
    }
    compileTestJava {
        sourceCompatibility=1.8
        targetCompatibility=1.8
    }

 可以看出这个版本的test代码要求用1.8。

gradlew.bat中

set GRADLE_OPTS=-XX:MaxMetaspaceSize=1024m -Xmx1024m -XX:MaxHeapSize=256m %GRADLE_OPTS%

 其中-XX:MaxMetaspaceSize是1.8的写法。

所以如果下载的是4.0的版本，最好把jdk也升级到1.8，要不就下载一下3.2.x的版本就好了。

• 问题2：在build过程中，出现heap内存溢出情况

错误信息如下：

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':referencePdf'.
> GC overhead limit exceeded

* Try:
Run with --info or --debug option to get more log output.

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':referen
cePdf'.
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.ex
ecuteActions(ExecuteActionsTaskExecuter.java:68)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.ex
ecute(ExecuteActionsTaskExecuter.java:46)
        at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExec
uter.execute(PostExecutionAnalysisTaskExecuter.java:34)
        at org.gradle.api.internal.changedetection.CacheLockHandlingTaskExecuter
$1.run(CacheLockHandlingTaskExecuter.java:34)
        at org.gradle.internal.Factories$1.create(Factories.java:22)
        at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(Def
aultCacheAccess.java:179)
        at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(Def
aultCacheAccess.java:232)
        at org.gradle.cache.internal.DefaultPersistentDirectoryStore.longRunning
Operation(DefaultPersistentDirectoryStore.java:138)
        at org.gradle.api.internal.changedetection.DefaultTaskArtifactStateCache
Access.longRunningOperation(DefaultTaskArtifactStateCacheAccess.java:83)
        at org.gradle.api.internal.changedetection.CacheLockHandlingTaskExecuter
.execute(CacheLockHandlingTaskExecuter.java:32)
        at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.exec
ute(SkipUpToDateTaskExecuter.java:55)
        at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execut
e(ValidatingTaskExecuter.java:57)
        at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecu
ter.execute(SkipEmptySourceFilesTaskExecuter.java:41)
        at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter
.execute(SkipTaskWithNoActionsExecuter.java:51)
        at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execut
e(SkipOnlyIfTaskExecuter.java:52)
        at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter
.execute(ExecuteAtMostOnceTaskExecuter.java:42)
        at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailur
e(AbstractTask.java:247)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.executeTask(De
faultTaskPlanExecutor.java:52)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.processTask(De
faultTaskPlanExecutor.java:38)
        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(Defaul
tTaskPlanExecutor.java:30)
        at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(Defau
ltTaskGraphExecuter.java:83)
        at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTask
ExecutionAction.java:29)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecute
r.java:61)
        at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExec
uter.java:23)
        at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecu
ter.java:67)
        at org.gradle.api.internal.changedetection.TaskCacheLockHandlingBuildExe
cuter$1.run(TaskCacheLockHandlingBuildExecuter.java:31)
        at org.gradle.internal.Factories$1.create(Factories.java:22)
        at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAcc
ess.java:124)
        at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAcc
ess.java:112)
        at org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(De
faultPersistentDirectoryStore.java:130)
        at org.gradle.api.internal.changedetection.DefaultTaskArtifactStateCache
Access.useCache(DefaultTaskArtifactStateCacheAccess.java:79)
        at org.gradle.api.internal.changedetection.TaskCacheLockHandlingBuildExe
cuter.execute(TaskCacheLockHandlingBuildExecuter.java:29)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecute
r.java:61)
        at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExec
uter.java:23)
        at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecu
ter.java:67)
        at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildEx
ecutionAction.java:32)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecute
r.java:61)
        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecute
r.java:54)
        at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(Default
GradleLauncher.java:158)
        at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradle
Launcher.java:113)
        at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLaun
cher.java:81)
        at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.jav
a:38)
        at org.gradle.launcher.exec.InProcessGradleLauncherActionExecuter.execut
e(InProcessGradleLauncherActionExecuter.java:39)
        at org.gradle.launcher.exec.InProcessGradleLauncherActionExecuter.execut
e(InProcessGradleLauncherActionExecuter.java:25)
        at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:50)
        at org.gradle.api.internal.Actions$RunnableActionAdapter.execute(Actions
.java:137)
        at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.
execute(CommandLineActionFactory.java:201)
        at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.
execute(CommandLineActionFactory.java:174)
        at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(
CommandLineActionFactory.java:170)
        at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(
CommandLineActionFactory.java:139)
        at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionRep
ortingAction.java:33)
        at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionRep
ortingAction.java:22)
        at org.gradle.launcher.Main.doAction(Main.java:48)
        at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
        at org.gradle.launcher.Main.main(Main.java:39)
        at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBoots
trap.java:50)
        at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.j
ava:32)
        at org.gradle.launcher.GradleMain.main(GradleMain.java:26)
        at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.ja
va:33)
        at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:130)
        at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:48)
Caused by: java.lang.OutOfMemoryError: GC overhead limit exceeded
        at org.apache.fop.area.inline.TextArea.addWord(TextArea.java:68)
        at org.apache.fop.layoutmgr.inline.TextLayoutManager.createTextArea(Text
LayoutManager.java:483)
        at org.apache.fop.layoutmgr.inline.TextLayoutManager.addAreas(TextLayout
Manager.java:361)
        at org.apache.fop.layoutmgr.inline.LineLayoutManager.addInlineArea(LineL
ayoutManager.java:1716)
        at org.apache.fop.layoutmgr.inline.LineLayoutManager.addAreas(LineLayout
Manager.java:1568)
        at org.apache.fop.layoutmgr.BlockLayoutManager.addAreas(BlockLayoutManag
er.java:395)
        at org.apache.fop.layoutmgr.BlockLayoutManager.addAreas(BlockLayoutManag
er.java:395)
        at org.apache.fop.layoutmgr.BlockLayoutManager.addAreas(BlockLayoutManag
er.java:395)
        at org.apache.fop.layoutmgr.BlockLayoutManager.addAreas(BlockLayoutManag
er.java:395)
        at org.apache.fop.layoutmgr.AreaAdditionUtil.addAreas(AreaAdditionUtil.j
ava:121)
        at org.apache.fop.layoutmgr.FlowLayoutManager.addAreas(FlowLayoutManager
.java:305)
        at org.apache.fop.layoutmgr.PageBreaker.addAreas(PageBreaker.java:241)
        at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.jav
a:508)
        at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.jav
a:371)
        at org.apache.fop.layoutmgr.PageBreaker.doPhase3(PageBreaker.java:262)
        at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.jav
a:346)
        at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.jav
a:264)
        at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(Pag
eSequenceLayoutManager.java:106)
        at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.j
ava:234)
        at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java
:123)
        at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilde
r.java:340)
        at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:169)
        at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(Trans
formerIdentityImpl.java:1050)
        at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source
)
        at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknow
n Source)
        at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContent
Dispatcher.dispatch(Unknown Source)
        at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Un
known Source)
        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.apache.xalan.transformer.TransformerIdentityImpl.transform(Transf
ormerIdentityImpl.java:432)


BUILD FAILED

那就把gradlew.bat的内存设置调大一点，我做实验时，机器的内存是8G、64位系统，直接使用

set GRADLE_OPTS=-XX:MaxPermSize=2048m -Xmx2048m -XX:MaxHeapSize=1024m %GRADLE_OPTS%

（我下载的是spring-framework-3.2.1.RELEASE版本，jdk1.7）

• 问题3：gradle命令的使用

在spring源码的根目录下，提供gradlew.bat和

import-into-eclipse.bat这两个命令，都可以build源码，但如果使用前者就不会生成eclipse的环境需要的一些文件，如下图所示：

 

另外，在使用import-into-eclipse.bat这个命令build时，可能会遇到一个问题，错误日志如下：

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':spring-webmvc-tiles3:eclipseClasspath'.
> Could not resolve all dependencies for configuration 'detachedConfiguration2'.

   > Module version group:org.springframework, module:spring-webmvc-tiles3, vers
ion:3.2.1.RELEASE, configuration:detachedConfiguration2 declares a dependency on
 configuration 'runtimeMerge' which is not declared in the module descriptor for
 group:org.springframework, module:spring-web, version:3.2.1.RELEASE

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug
option to get more log output.

 从日志中可以看出是在build spring-webmvc-tiles3项目时，生成eclipse的.classpath文件时出错，打开其它正常导入的项目的.classpath看下这个文件包含了哪些信息，如打开spring-aop项目的：

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="output" path="spring-aop/bin/eclipse"/>
    <classpathentry output="bin/main" kind="src" path="src/main/java"/>
    <classpathentry output="bin/main" kind="src" path="src/main/resources"/>
    <classpathentry output="bin/test" kind="src" path="src/test/java"/>
    <classpathentry output="bin/test" kind="src" path="src/test/resources"/>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER" exported="true"/>
    <classpathentry kind="src" path="/spring-core" exported="true"/>
    <classpathentry kind="src" path="/spring-beans" exported="true"/>
    <classpathentry sourcepath="C:/Users/so/.gradle/caches/artifacts-15/filestore/aopalliance/aopalliance/1.0/source/4a4b6d692e17846a9f3da036438a7ac491d3c814/aopalliance-1.0-sources.jar" kind="lib" path="C:/Users/so/.gradle/caches/artifacts-15/filestore/aopalliance/aopalliance/1.0/jar/235ba8b489512805ac13a8f9ea77a1ca5ebe3e8/aopalliance-1.0.jar" exported="true"/>
    <classpathentry kind="lib" path="C:/Users/so/.gradle/caches/artifacts-15/filestore/com.jamonapi/jamon/2.4/jar/e2ad6f45c2ba72d8fa798b68a5f9b73c9f047756/jamon-2.4.jar"/>
    <classpathentry sourcepath="C:/Users/so/.gradle/caches/artifacts-15/filestore/commons-pool/commons-pool/1.5.3/source/7c4d461b6574f056e1d4fc6daa16821382b53bef/commons-pool-1.5.3-sources.jar" kind="lib" path="C:/Users/so/.gradle/caches/artifacts-15/filestore/commons-pool/commons-pool/1.5.3/jar/7ad440d63c6eea5e79f1737e264810c76258d042/commons-pool-1.5.3.jar"/>
    <classpathentry sourcepath="C:/Users/so/.gradle/caches/artifacts-15/filestore/org.aspectj/aspectjweaver/1.7.1/source/5bfa1ea3b5653119dcf22a0d675302e0e5a802b1/aspectjweaver-1.7.1-sources.jar" kind="lib" path="C:/Users/so/.gradle/caches/artifacts-15/filestore/org.aspectj/aspectjweaver/1.7.1/jar/cf8f3ca56739d3bf8a539362e48f180a31f83433/aspectjweaver-1.7.1.jar"/>
    <classpathentry sourcepath="C:/Users/so/.gradle/caches/artifacts-15/filestore/junit/junit/4.11/source/28e0ad201304e4a4abf999ca0570b7cffc352c3c/junit-4.11-sources.jar" kind="lib" path="C:/Users/so/.gradle/caches/artifacts-15/filestore/junit/junit/4.11/jar/4e031bb61df09069aeb2bffb4019e7a5034a4ee0/junit-4.11.jar"/>
    <classpathentry sourcepath="C:/Users/so/.gradle/caches/artifacts-15/filestore/org.hamcrest/hamcrest-all/1.3/source/47e033b7ab18c5dbd5fe29fc1bd5a40afe028818/hamcrest-all-1.3-sources.jar" kind="lib" path="C:/Users/so/.gradle/caches/artifacts-15/filestore/org.hamcrest/hamcrest-all/1.3/jar/63a21ebc981131004ad02e0434e799fd7f3a8d5a/hamcrest-all-1.3.jar"/>
    <classpathentry sourcepath="C:/Users/so/.gradle/caches/artifacts-15/filestore/org.mockito/mockito-core/1.9.5/source/46f703fb4266140c544d48a189cb25947eb6333e/mockito-core-1.9.5-sources.jar" kind="lib" path="C:/Users/so/.gradle/caches/artifacts-15/filestore/org.mockito/mockito-core/1.9.5/jar/c3264abeea62c4d2f367e21484fbb40c7e256393/mockito-core-1.9.5.jar"/>
    <classpathentry sourcepath="C:/Users/so/.gradle/caches/artifacts-15/filestore/org.hamcrest/hamcrest-core/1.3/source/1dc37250fbc78e23a65a67fbbaf71d2e9cbc3c0b/hamcrest-core-1.3-sources.jar" kind="lib" path="C:/Users/so/.gradle/caches/artifacts-15/filestore/org.hamcrest/hamcrest-core/1.3/jar/42a25dc3219429f0e5d060061f71acb49bf010a0/hamcrest-core-1.3.jar"/>
    <classpathentry sourcepath="C:/Users/so/.gradle/caches/artifacts-15/filestore/org.objenesis/objenesis/1.0/source/b10c90e57b7bb985a7b6a704769428fe5c2a732c/objenesis-1.0-sources.jar" kind="lib" path="C:/Users/so/.gradle/caches/artifacts-15/filestore/org.objenesis/objenesis/1.0/jar/9b473564e792c2bdf1449da1f0b1b5bff9805704/objenesis-1.0.jar"/>
    <classpathentry kind="lib" path="D:/DevelopTools/spring-framework-3.2.1.RELEASE/spring-core/build/libs/spring-cglib-repack-3.0.jar" exported="true"/>
</classpath>

 而spring-webmvc-tiles3下根本就没有.classpath的影子，没得比较，虽然上面的错误日志的E文都认识，但还是看不出它在讲什么，不过大体能看得出是依赖出了问题，那只能是想办法顺藤摸瓜了。重新打开build.gradle，找到有关spring-webmvc-tiles3项目的描述，如下：

project("spring-webmvc-tiles3") {
    description = "Spring Framework Tiles3 Integration"
    merge.into = project(":spring-webmvc")
    dependencies {
        provided(project(":spring-context"))
        provided(project(":spring-web"))
        provided("javax.el:el-api:1.0")
        provided("javax.servlet:jstl:1.2")
        provided("javax.servlet.jsp:jsp-api:2.1")
        optional("org.apache.tiles:tiles-request-api:1.0.1")
        optional("org.apache.tiles:tiles-api:3.0.1")
        optional("org.apache.tiles:tiles-core:3.0.1") {
            exclude group: "org.slf4j", module: "jcl-over-slf4j"
        }
        optional("org.apache.tiles:tiles-servlet:3.0.1") {
            exclude group: "org.slf4j", module: "jcl-over-slf4j"
        }
        optional("org.apache.tiles:tiles-jsp:3.0.1") {
            exclude group: "org.slf4j", module: "jcl-over-slf4j"
        }
        optional("org.apache.tiles:tiles-extras:3.0.1") {
            exclude group: "org.slf4j", module: "jcl-over-slf4j"
        }
        optional("org.apache.tiles:tiles-el:3.0.1") {
            exclude group: "org.slf4j", module: "jcl-over-slf4j"
        }
        provided("javax.servlet:javax.servlet-api:3.0.1")
        testCompile("org.slf4j:slf4j-jcl:${slf4jVersion}")
    }
}

 打开C:/Users/so/.gradle/caches/artifacts-15/filestore，挨个依赖进行检查，jar包倒是最下载下来了，但是"org.apache.tiles:tiles-jsp:3.0.1"、"org.apache.tiles:tiles-extras:3.0.1"、"org.apache.tiles:tiles-el:3.0.1"三个却没有下载到source，其它包都有jar、pom、source三个目录，这三个没有source目录，只有jar、pom目录，问题应该是出现在这里。

后来终于让我找到了这么一个东西：http://issues.gradle.org/browse/GRADLE-1157，正好证实我前面的猜想，所以按照issue中的解决办法，在build.gradle中加上如下部分：

eclipseClasspath {
            downloadSources = false; // required for eclipseClasspath to work
}

 关于spring-webmvc-tiles3项目的脚本、就变成这样了：

project("spring-webmvc-tiles3") {
    description = "Spring Framework Tiles3 Integration"
    merge.into = project(":spring-webmvc")
    dependencies {
        provided(project(":spring-context"))
        provided(project(":spring-web"))
        provided("javax.el:el-api:1.0")
        provided("javax.servlet:jstl:1.2")
        provided("javax.servlet.jsp:jsp-api:2.1")
        optional("org.apache.tiles:tiles-request-api:1.0.1")
        optional("org.apache.tiles:tiles-api:3.0.1")
        optional("org.apache.tiles:tiles-core:3.0.1") {
            exclude group: "org.slf4j", module: "jcl-over-slf4j"
        }
        optional("org.apache.tiles:tiles-servlet:3.0.1") {
            exclude group: "org.slf4j", module: "jcl-over-slf4j"
        }
        optional("org.apache.tiles:tiles-jsp:3.0.1") {
            exclude group: "org.slf4j", module: "jcl-over-slf4j"
        }
        optional("org.apache.tiles:tiles-extras:3.0.1") {
            exclude group: "org.slf4j", module: "jcl-over-slf4j"
        }
        optional("org.apache.tiles:tiles-el:3.0.1") {
            exclude group: "org.slf4j", module: "jcl-over-slf4j"
        }
        provided("javax.servlet:javax.servlet-api:3.0.1")
        testCompile("org.slf4j:slf4j-jcl:${slf4jVersion}")
    }
    eclipseClasspath {
            downloadSources = false; // required for eclipseClasspath to work
    }
}

 重新运行命令，这一次终于让我看到了BUILD SUCCESSFUL的字样了……

成功build完成后，可以看到spring目录下的spring-webmvc-tiles3项目也正常生成了导入eclipse需要的文件。打开.classpath查看一下：

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="output" path="spring-webmvc-tiles3/bin/eclipse"/>
    <classpathentry output="bin/main" kind="src" path="src/main/java"/>
    <classpathentry output="bin/test" kind="src" path="src/test/java"/>
    <classpathentry output="bin/test" kind="src" path="src/test/resources"/>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER" exported="true"/>
    <classpathentry kind="src" path="/spring-context" exported="true"/>
    <classpathentry kind="src" path="/spring-web" exported="true"/>
    <classpathentry kind="src" path="/spring-webmvc" exported="true"/>
    <classpathentry kind="lib" path="C:/Users/so/.gradle/caches/artifacts-15/filestore/org.apache.tiles/tiles-request-api/1.0.1/jar/ac444f7d599a6ae28c360cd10fdf2aafa3b87106/tiles-request-api-1.0.1.jar"/>
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    <classpathentry kind="lib" path="C:/Users/so/.gradle/caches/artifacts-15/filestore/org.apache.tiles/tiles-request-jsp/1.0.1/jar/ad5fa55a948087e67593adbff312206d07033c08/tiles-request-jsp-1.0.1.jar"/>
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    <classpathentry kind="lib" path="C:/Users/so/.gradle/caches/artifacts-15/filestore/aopalliance/aopalliance/1.0/jar/235ba8b489512805ac13a8f9ea77a1ca5ebe3e8/aopalliance-1.0.jar"/>
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    <classpathentry kind="src" path="/spring-aop" exported="true"/>
    <classpathentry kind="src" path="/spring-core" exported="true"/>
    <classpathentry kind="src" path="/spring-beans" exported="true"/>
    <classpathentry kind="src" path="/spring-expression" exported="true"/>
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    <classpathentry kind="src" path="/spring-oxm" exported="true"/>
    <classpathentry kind="src" path="/spring-context-support" exported="true"/>
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    <classpathentry kind="src" path="/spring-tx" exported="true"/>
</classpath>

 果然没有sourcepath的信息。

折腾了那么久，终于到了可以看一下成果的时候了。

Spring Tool Suite说简单一点就是Spring家的eclipse，去官网下一个最新版，安装上。

打开STS，菜单File->import选择General下面的Exsiting projects into workspace，勾选要导入的子项目，确定即可。

成果如上，齐齐整整，没有错误，挺好！