Eclipse和Gradle類路徑導致啟動緩慢

Question

好的，所以這有點奇怪。

我們有一個Gradle多模塊項目。 我們使用Gradle Eclipse插件來生成Eclipse類路徑。

Gradle 2.0版Eclipse 4.4（Kepler）JDK 1.8.05

問題是，在運行Junit測試或啟動Java時，測試需要很長時間才能開始運行。 超過5秒。

我在“進度”窗口中看到以下輸出。

Launching: Starting virtual machine...

我之前沒有遇到過這個問題，其他項目也能正常工作（不使用gradle生成的classpath）

生成的.classpath文件如下所示

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="output" path="build"/>
    <classpathentry kind="src" path="src/main/java"/>
    <classpathentry kind="src" path="src/test/java"/>
    <classpathentry kind="src" path="src/test/resources"/>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/ch.qos.logback/logback-classic/1.1.2/decd76e2c461157804473468bbdc6b8eb6d6121b/logback-classic-1.1.2-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/ch.qos.logback/logback-classic/1.1.2/b316e9737eea25e9ddd6d88eaeee76878045c6b2/logback-classic-1.1.2.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.slf4j/jcl-over-slf4j/1.7.7/b5a646b81b899e930f8600c5f45766dd82743d93/jcl-over-slf4j-1.7.7-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.slf4j/jcl-over-slf4j/1.7.7/56003dcd0a31deea6391b9e2ef2f2dc90b205a92/jcl-over-slf4j-1.7.7.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/com.google.guava/guava/17.0/7ca0efbeb87ca845b5d7a0ac9c21a4b7b95f7b28/guava-17.0-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/com.google.guava/guava/17.0/9c6ef172e8de35fd8d4d8783e4821e57cdef7445/guava-17.0.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.apache.commons/commons-lang3/3.3.2/d2a489573c0ed2c4942b3660decad5d65087b406/commons-lang3-3.3.2-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.apache.commons/commons-lang3/3.3.2/90a3822c38ec8c996e84c16a3477ef632cbc87a3/commons-lang3-3.3.2.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/javax.inject/javax.inject/1/a00123f261762a7c5e0ec916a2c7c8298d29c400/javax.inject-1-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/javax.inject/javax.inject/1/6975da39a7040257bd51d21a231b76c915872d38/javax.inject-1.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-web/4.0.6.RELEASE/ea420724d884a43e3db4b08d2ca5ff75715ff9bb/spring-web-4.0.6.RELEASE-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-web/4.0.6.RELEASE/85ef4b91fcdd86d81e4a9b3e5f006dcb4128e6d/spring-web-4.0.6.RELEASE.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/com.google.code.gson/gson/2.2.4/a6dc5db8a12928e583bd3f23e72d3ab611ecd58f/gson-2.2.4-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/com.google.code.gson/gson/2.2.4/a60a5e993c98c864010053cb901b7eab25306568/gson-2.2.4.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.hamcrest/hamcrest-library/1.3/47a7ee46628ab7133129cd7cef1e92657bc275e/hamcrest-library-1.3-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.hamcrest/hamcrest-library/1.3/4785a3c21320980282f9f33d0d1264a69040538f/hamcrest-library-1.3.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.mockito/mockito-core/1.9.5/46f703fb4266140c544d48a189cb25947eb6333e/mockito-core-1.9.5-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.mockito/mockito-core/1.9.5/c3264abeea62c4d2f367e21484fbb40c7e256393/mockito-core-1.9.5.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-test/4.0.6.RELEASE/f0e39db787769d8926a6ae7baed1a1ebb9d6e50a/spring-test-4.0.6.RELEASE-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-test/4.0.6.RELEASE/b2f65445f300f1317fe694e6530cce39d7090ff6/spring-test-4.0.6.RELEASE.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/ch.qos.logback/logback-core/1.1.2/502e1c764542fe747896c1dc04f023acfe0e5cbc/logback-core-1.1.2-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/ch.qos.logback/logback-core/1.1.2/2d23694879c2c12f125dac5076bdfd5d771cc4cb/logback-core-1.1.2.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-aop/4.0.6.RELEASE/d21d57199535402a4afdb4e9406d6f5276a5b205/spring-aop-4.0.6.RELEASE-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-aop/4.0.6.RELEASE/e377760b7692569535573ba9f6e80b4b74869369/spring-aop-4.0.6.RELEASE.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-beans/4.0.6.RELEASE/5e37af2dc3a230912dbb06b45cc2c1d53c2c9abb/spring-beans-4.0.6.RELEASE-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-beans/4.0.6.RELEASE/587879b58acebeb5b0a63c01e822f9b44d9a4c77/spring-beans-4.0.6.RELEASE.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-context/4.0.6.RELEASE/778949f894ac1ee2d42a8f074a7477540f4d04a/spring-context-4.0.6.RELEASE-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-context/4.0.6.RELEASE/3bb3a52edabf9ffe73aa534fb085c816bac28b4d/spring-context-4.0.6.RELEASE.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-core/4.0.6.RELEASE/5b16ad4018f9012ce3917e2e1038d19d2da57285/spring-core-4.0.6.RELEASE-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-core/4.0.6.RELEASE/d880beac77d42c5798aa2b632ddd0e4ae47c79ad/spring-core-4.0.6.RELEASE.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/1dc37250fbc78e23a65a67fbbaf71d2e9cbc3c0b/hamcrest-core-1.3-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/42a25dc3219429f0e5d060061f71acb49bf010a0/hamcrest-core-1.3.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.objenesis/objenesis/1.0/b10c90e57b7bb985a7b6a704769428fe5c2a732c/objenesis-1.0-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.objenesis/objenesis/1.0/9b473564e792c2bdf1449da1f0b1b5bff9805704/objenesis-1.0.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/junit/junit/4.11/28e0ad201304e4a4abf999ca0570b7cffc352c3c/junit-4.11-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/junit/junit/4.11/4e031bb61df09069aeb2bffb4019e7a5034a4ee0/junit-4.11.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/aopalliance/aopalliance/1.0/4a4b6d692e17846a9f3da036438a7ac491d3c814/aopalliance-1.0-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/aopalliance/aopalliance/1.0/235ba8b489512805ac13a8f9ea77a1ca5ebe3e8/aopalliance-1.0.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-expression/4.0.6.RELEASE/b86718cc9e7b5f53be187e8e35b44ad2dfd0196b/spring-expression-4.0.6.RELEASE-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.springframework/spring-expression/4.0.6.RELEASE/5f0a135b8cf290aa244097dc6264ad0989d25c56/spring-expression-4.0.6.RELEASE.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/commons-logging/commons-logging/1.1.3/28bb0405fddaf04f15058fbfbe01fe2780d7d3b6/commons-logging-1.1.3-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/commons-logging/commons-logging/1.1.3/f6f66e966c70a83ffbdb6f17a0919eaf7c8aca7f/commons-logging-1.1.3.jar" exported="true"/>
    <classpathentry sourcepath="C:/gradlehome/caches/modules-2/files-2.1/org.slf4j/slf4j-api/1.7.7/acd62e31cc314266e73eebed0b6dd7ea974a0ed/slf4j-api-1.7.7-sources.jar" kind="lib" path="C:/gradlehome/caches/modules-2/files-2.1/org.slf4j/slf4j-api/1.7.7/2b8019b6249bb05d81d3a3094e468753e2b21311/slf4j-api-1.7.7.jar" exported="true"/>
    <classpathentry kind="src" path="/my-api-core" exported="true"/>
</classpath>

但是，如果我將這些庫復制到項目內的文件夾中，並刪除最后一行的突出顯示的行，則測試將在毫秒后開始！ 最后一個類路徑條目的類型為“ src”

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="output" path="build"/>
    <classpathentry kind="src" path="src/main/java"/>
    <classpathentry kind="src" path="src/test/java"/>
    <classpathentry kind="src" path="src/test/resources"/>
    <classpathentry exported="true" kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
    <classpathentry kind="lib" path="lib/junit-4.11.jar"/>
    <classpathentry kind="lib" path="lib/aopalliance-1.0.jar" />
    <classpathentry kind="lib" path="lib/commons-lang3-3.3.2.jar"/>
    <classpathentry kind="lib" path="lib/commons-logging-1.1.3.jar"/>
    <classpathentry kind="lib" path="lib/guava-17.0.jar"/>
    <classpathentry kind="lib" path="lib/hamcrest-core-1.3.jar"/>
    <classpathentry kind="lib" path="lib/hamcrest-library-1.3.jar"/>
    <classpathentry kind="lib" path="lib/javax.inject-1.jar"/>
    <classpathentry kind="lib" path="lib/jcl-over-slf4j-1.7.7.jar"/>
    <classpathentry kind="lib" path="lib/logback-classic-1.1.2.jar"/>
    <classpathentry kind="lib" path="lib/logback-core-1.1.2.jar"/>
    <classpathentry kind="lib" path="lib/marketplace-api-core-1.0.jar"/>
    <classpathentry kind="lib" path="lib/mockito-core-1.9.5.jar"/>
    <classpathentry kind="lib" path="lib/objenesis-1.0.jar"/>
    <classpathentry kind="lib" path="lib/slf4j-api-1.7.7.jar"/>
    <classpathentry kind="lib" path="lib/spring-aop-4.0.6.RELEASE.jar"/>
    <classpathentry kind="lib" path="lib/spring-beans-4.0.6.RELEASE.jar"/>
    <classpathentry kind="lib" path="lib/spring-context-4.0.6.RELEASE.jar"/>
    <classpathentry kind="lib" path="lib/spring-core-4.0.6.RELEASE.jar"/>
    <classpathentry kind="lib" path="lib/spring-expression-4.0.6.RELEASE.jar"/>
    <classpathentry kind="lib" path="lib/spring-gson-http-message-converter.jar"/>
    <classpathentry kind="lib" path="lib/spring-test-4.0.6.RELEASE.jar"/>
    <classpathentry kind="lib" path="lib/spring-web-4.0.6.RELEASE.jar"/>
    <classpathentry kind="lib" path="lib/gson-2.2.4.jar" exported="true"/>
    **<classpathentry exported="true" kind="src" path="/my-api-core"/>**
</classpath>

我不能鍛煉導致緩慢發射的原因？

更新：如果我創建一個Ubuntu VM並使用Gradle生成的Eclipse類路徑的同一項目，則不會出現此問題

Answer 1

如您所見，Gradle在生成Eclipse配置文件方面做得很糟糕。 我建議從Spring Tool Suite安裝Gradle IDE功能，並使其管理Eclipse的構建路徑。 這樣，您最終得到一個.classpath ，它沒有指向每個依賴關系的絕對路徑。 看起來像這樣：

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="src" path="src/main/java"/>
    <classpathentry kind="src" path="src/main/resources"/>
    <classpathentry kind="src" path="src/test/java"/>
    <classpathentry kind="src" path="src/test/resources"/>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7"/>
    <classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.module.container"/>
    <classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.web.container"/>
    <classpathentry exported="true" kind="con" path="org.springsource.ide.eclipse.gradle.classpathcontainer">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="output" path="bin"/>
</classpath>

我真的希望生成Eclipse項目文件的Gradle插件更聰明，但是據我了解，該團隊對該主題似乎沒有興趣。

順便說一句，還建議將.project和.classpath以及其他Eclipse配置文件檢入源代碼控制中，以便每個用戶都獲得與項目完全相同的配置。