使用URLClassLoader加载weblogic.jar（weblogic 12c服务器的）

我尝试将weblogic服务器（12.1.3）的weblogic.jar动态加载到类路径中，例如在运行时通过UrlClassloader。然后我想使用这个类加载器通过反射加载并启动eMebedWebLogic服务器（原因是我们构建了自己的定制测试运行程序）：

我做错了什么

File file = new File("D:/Oracle/wls12130/wlserver/server/lib/weblogic.jar");
URL[] urls = new URL[]{file.toURI().toURL()};
URLClassLoader urlClassLoader = new URLClassLoader(urls, Thread.currentThread().getContextClassLoader());

Class<?> factoryClass = urlClassLoader.loadClass("weblogic.server.embed.EmbeddedServerFactory");
Class<?> serverClass = urlClassLoader.loadClass("weblogic.server.embed.EmbeddedServer");

Object factoryObject = factoryClass.newInstance();
Method factoryMethod = factoryClass.getDeclaredMethod("getEmbeddedServer");
Method serverMethod = serverClass.getDeclaredMethod("start");
Object server = factoryMethod.invoke(factoryObject);
serverMethod.invoke(server);

weblogic.server.embed.EmbeddedServerException: Error creating default domain
at weblogic.server.embed.internal.DomainConfig.createConfig(DomainConfig.java:235)
at weblogic.server.embed.internal.DomainConfig.getDefaultDomain(DomainConfig.java:143)
at weblogic.server.embed.internal.DomainConfig.ensureInitialized(DomainConfig.java:66)
at weblogic.server.embed.internal.EmbeddedServerImpl.ensureStarted(EmbeddedServerImpl.java:213)
at weblogic.server.embed.internal.EmbeddedServerImpl.start(EmbeddedServerImpl.java:111)
... 10 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at weblogic.management.internal.CIEDomainGenerator.generateDefaultDomain(CIEDomainGenerator.java:62)
at weblogic.server.embed.internal.EmbeddedServerProvider.createDefaultDomain(EmbeddedServerProvider.java:142)
at weblogic.server.embed.internal.DomainConfig.createConfig(DomainConfig.java:233)
... 14 more
Caused by: com.oracle.cie.domain.DomainConfigException: java.lang.IllegalStateException: java.lang.reflect.InvocationTargetException
at com.oracle.cie.domain.DomainInfoHelper.createDefaultDomain(DomainInfoHelper.java:824)
at com.oracle.cie.domain.DomainInfoHelper.createDefaultDomain(DomainInfoHelper.java:705)
... 21 more