Question

我开始使用drools，我想在spring-boot服务中使用它，但即使是一个简单的例子，我在Xstream上也没有这样的方法错误。我错过了什么？

  Caused by: java.lang.NoSuchMethodError: com.thoughtworks.xstream.XStream.setupDefaultSecurity(Lcom/thoughtworks/xstream/XStream;)V
        at org.kie.internal.xstream.XStreamUtils.internalCreateXStream(XStreamUtils.java:58)
        at org.kie.internal.xstream.XStreamUtils.createXStream(XStreamUtils.java:38)
        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:142)
        at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieClasspathContainer(KieServicesImpl.java:135)
        at org.drools.compiler.kie.builder.impl.KieServicesImpl.getKieClasspathContainer(KieServicesImpl.java:101)
        at org.drools.compiler.kie.builder.impl.KieServicesImpl.getKieClasspathContainer(KieServicesImpl.java:79)

Answer 1

我遇到了类似的问题。该方法是在xstream v1.4.10中引入的。

我能够通过excluding xstream (v1.4.9)依赖项drools-compiler (v7.6.0.Final)修复它并为xstream (v1.4.10)添加单独的依赖项

<dependency>
   <groupId>org.drools</groupId>
   <artifactId>drools-compiler</artifactId>
   <version>7.6.0.Final</version>
   <exclusions>
      <exclusion>
         <groupId>com.thoughtworks.xstream</groupId>
         <artifactId>xstream</artifactId>
      </exclusion>
   </exclusions>
</dependency>

<dependency>
   <groupId>com.thoughtworks.xstream</groupId>
   <artifactId>xstream</artifactId>
   <version>1.4.10</version>
</dependency>

Answer 2

|  \- org.drools:drools-decisiontables:jar:7.4.1.Final:compile
[INFO] |     +- (org.drools:drools-core:jar:7.4.1.Final:compile - omitted for duplicate)
[INFO] |     +- org.drools:drools-compiler:jar:7.4.1.Final:compile
[INFO] |     |  +- (org.drools:drools-core:jar:7.4.1.Final:compile - omitted for duplicate)
[INFO] |     |  +- (org.kie:kie-api:jar:7.4.1.Final:compile - omitted for duplicate)
[INFO] |     |  +- (org.kie:kie-internal:jar:7.4.1.Final:compile - omitted for duplicate)
[INFO] |     |  +- (org.uberfire:uberfire-maven-support:jar:1.4.0.Final:compile - omitted for duplicate)
[INFO] |     |  +- org.antlr:antlr-runtime:jar:3.5.2:compile
[INFO] |     |  +- org.eclipse.jdt.core.compiler:ecj:jar:4.4.2:compile
[INFO] |     |  +- (org.mvel:mvel2:jar:2.3.2.Final:compile - omitted for duplicate)
[INFO] |     |  +- (com.thoughtworks.xstream:xstream:jar:1.4.9:compile - version managed from 1.4.10; omitted for duplicate)

drools需要1.4.10版本，但我的maven保留了eureka使用的1.4.9版本（netflix解决方案）

|  +- (com.thoughtworks.xstream:xstream:jar:1.4.9:compile - version managed from 1.4.10; omitted for duplicate)

如果我强制使用版本1.4.10，我收到此消息

+- (com.thoughtworks.xstream:xstream:jar:1.4.9:compile - version managed from 1.4.10; omitted for conflict with 1.4.10)

但它正在发挥作用......

在春季服务中流淌XStream

2 个答案: