Java Jar地獄運行時異常

Question

我在運行單元測試時遇到了jar地獄的問題。

java.lang.RuntimeException: found jar hell in test classpath 
    at org.elasticsearch.bootstrap.BootstrapForTesting.<clinit>(BootstrapForTesting.java:95) 
    at org.elasticsearch.test.ESTestCase.<clinit>(ESTestCase.java:99) 
    at java.lang.Class.forName0(Native Method) 
    at java.lang.Class.forName(Class.java:348) 
    at com.carrotsearch.randomizedtesting.RandomizedRunner$2.run(RandomizedRunner.java:585) 
Caused by: java.lang.IllegalStateException: jar hell! 
class: org.apache.commons.io.CopyUtils 
jar1: C:\Users\vvenkatasubbu\.gradle\caches\modules-2\files-2.1\commons-io\commons-io\1.3.2\b6dde38349ba9bb5e6ea6320531eae969985dae5\commons-io-1.3.2.jar 
jar2: C:\Users\vvenkatasubbu\.gradle\caches\modules-2\files-2.1\org.apache.commons\commons-io\1.3.2\b6dde38349ba9bb5e6ea6320531eae969985dae5\commons-io-1.3.2.jar 
    at org.elasticsearch.bootstrap.JarHell.checkClass(JarHell.java:282) 
    at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:186) 
    at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:87) 
    at org.elasticsearch.bootstrap.BootstrapForTesting.<clinit>(BootstrapForTesting.java:93) 
    ... 4 more 

我得到了上面的錯誤，通過刪除不必要的jar文件解決了這些錯誤。

但我面臨的問題與以下兩個jar，即tomcat-embed-core-8.0.36.jar和hibernate-jpa-2.1-api-1.0.0.Final.jar。這兩者之間有一個共同的類，我需要兩個jar文件，任何人都可以解釋我如何解決問題。我需要這兩個jar文件。

java.lang.RuntimeException: found jar hell in test classpath 
     at org.elasticsearch.bootstrap.BootstrapForTesting.<clinit>(BootstrapForTesting.java:95) 
     at org.elasticsearch.test.ESTestCase.<clinit>(ESTestCase.java:99) 
     at java.lang.Class.forName0(Native Method) 
     at java.lang.Class.forName(Class.java:348) 
     at com.carrotsearch.randomizedtesting.RandomizedRunner$2.run(RandomizedRunner.java:585) 
    Caused by: java.lang.IllegalStateException: jar hell! 
    class: javax.persistence.PersistenceProperty 
    jar1: C:\Users\vvenkatasubbu\.gradle\caches\modules-2\files-2.1\org.apache.tomcat.embed\tomcat-embed-core\8.0.36\de87fa65671daad59773c8280eeabbd335f42c\tomcat-embed-core-8.0.36.jar 
    jar2: C:\Users\vvenkatasubbu\.gradle\caches\modules-2\files-2.1\org.hibernate.javax.persistence\hibernate-jpa-2.1-api\1.0.0.Final\5e731d961297e5a07290bfaf3db1fbc8bbbf405a\hibernate-jpa-2.1-api-1.0.0.Final.jar 
     at org.elasticsearch.bootstrap.JarHell.checkClass(JarHell.java:282) 
     at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:186) 
     at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:87) 
     at org.elasticsearch.bootstrap.BootstrapForTesting.<clinit>(BootstrapForTesting.java:93) 
     ... 4 more 

在此先感謝。

Answer 1

我已經通過覆蓋單元測試sorce文件夾中的JarHell類來修復它。

步驟i已經做

1. 創建在測試文件夾一個單獨的包。

   org.elasticsearch.bootstrap

2. 創建一個新的類，並粘貼以下代碼。一邊做gradlew構建

   package org.elasticsearch.bootstrap; 
       import java.net.URL; 
       public class JarHell { 
        private JarHell() {} 
        public static void checkJarHell() throws Exception {} 
        public static void checkJarHell(URL urls[]) throws Exception {} 
        public static void checkVersionFormat(String targetVersion) {} 
        public static void checkJavaVersion(String resource, String targetVersion) {} 
        public static URL[] parseClassPath() {return new URL[]{};} 
       } 
   

3. 問題是固定的。

4. 要單獨運行集成測試，請將以下行添加到運行配置中的VM參數。

-ea -Dtests.security.manager=false