今天使用 Drools 7.7.0.Final 时出现找不到 com.thoughtworks.xstream.XStream.setupDefaultSecurity的错误，
于是尝试加入了 XStream的包：
compile ("com.thoughtworks.xstream:xstream:1.4.9")
结果还是一样的报错，点击查看源码的时候真没在 XStream的类里找到 setupDefaultSecurity。
这时候考虑到是不是版本的问题，去XStream的官网找到最新版是 1.4.10。
于是
compile ("com.thoughtworks.xstream:xstream:1.4.10")
最终解决了这个错误。
Exception：
java.lang.NoSuchMethodError: com.thoughtworks.xstream.XStream.setupDefaultSecurity(Lcom/thoughtworks/xstream/XStream;)V
at org.kie.soup.commons.xstream.XStreamUtils.internalCreateTrustingXStream(XStreamUtils.java:168)
at org.kie.soup.commons.xstream.XStreamUtils.createTrustingXStream(XStreamUtils.java:119)
at org.drools.compiler.kproject.models.KieModuleModelImpl$kModuleMarshaller.<init>(KieModuleModelImpl.java:170)
at org.drools.compiler.kproject.models.KieModuleModelImpl$kModuleMarshaller.<init>(KieModuleModelImpl.java:169)
at org.drools.compiler.kproject.models.KieModuleModelImpl.<clinit>(KieModuleModelImpl.java:167)
at org.drools.compiler.kie.builder.impl.ClasspathKieProject.fetchKModule(ClasspathKieProject.java:179)
at org.drools.compiler.kie.builder.impl.ClasspathKieProject.fetchKModule(ClasspathKieProject.java:141)
at org.drools.compiler.kie.builder.impl.ClasspathKieProject.discoverKieModules(ClasspathKieProject.java:112)
at org.drools.compiler.kie.builder.impl.ClasspathKieProject.init(ClasspathKieProject.java:84)
at org.drools.compiler.kie.builder.impl.KieContainerImpl.<init>(KieContainerImpl.java:125)
at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieClasspathContainer(KieServicesImpl.java:131)
at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieClasspathContainer(KieServicesImpl.java:118)
at com.cook.rest.drools.HelloWorldTest.testHelloWorld(HelloWorldTest.java:16)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
