Drools报错:java.lang.NoClassDefFoundError: org/antlr/runtime/CharStream详解程序员

java.lang.NoClassDefFoundError: org/antlr/runtime/CharStream

at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:292)

at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:457)

at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:30)

at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:40)

at com.sample.DroolsTest.main(DroolsTest.java:23)

解决办法：

把drools自带的antlr包加进去就ok了

对于5.0版本：

Drools 5.0.0.M4/drools-5.0.0.M4-bin/lib/antlr-runtime-3.1.1.jar