Java Drools 运行时错误
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Drools runtime error
提问by newbie
I'm trying to run Droolssample ( the HelloWorld sample when creating a new Drools project ), I didn't change anything in the project but I'm getting an error.
我正在尝试运行Drools示例（创建新 Drools 项目时的 HelloWorld 示例），我没有更改项目中的任何内容，但出现错误。
Here's the stacktrace:
这是堆栈跟踪：
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
org.drools.RuntimeDroolsException: Unable to load dialect 'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java:org.drools.rule.builder.dialect.java.JavaDialectConfiguration'
at org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:321)
at org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:307)
at org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:192)
at org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:170)
at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:300)
at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:228)
at org.drools.builder.impl.KnowledgeBuilderFactoryServiceImpl.newKnowledgeBuilder(KnowledgeBuilderFactoryServiceImpl.java:34)
at org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilder(KnowledgeBuilderFactory.java:46)
at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:39)
at com.sample.DroolsTest.main(DroolsTest.java:23)
Caused by: java.lang.RuntimeException: The Eclipse JDT Core jar is not in the classpath
at org.drools.rule.builder.dialect.java.JavaDialectConfiguration.setCompiler(JavaDialectConfiguration.java:100)
at org.drools.rule.builder.dialect.java.JavaDialectConfiguration.init(JavaDialectConfiguration.java:61)
at org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:317)
... 9 more
I'm running the project in eclipse IDE
我在 Eclipse IDE 中运行该项目
采纳答案by Furrald
Like Sid said, the jar is in your eclipse plugin directory. For my windows box, this is C:\Program Files\eclipse\plugins\org.eclipse.jdt.core_3.8.2.v20120814-155456.jar
就像 Sid 所说的，jar 位于您的 eclipse 插件目录中。对于我的 Windows 框，这是 C:\Program Files\eclipse\plugins\org.eclipse.jdt.core_3.8.2.v20120814-155456.jar
回答by Sid
You may need to add the library org.eclipse.core.jdt-version that is on your
eclipse plugins folder to your classpath.
您可能需要将
eclipse plugins 文件夹中的库 org.eclipse.core.jdt-version 添加到类路径中。
回答by Rupesh
Adding onto what Sid and Furrald already mentioned. Stating just an obvious, but if someone is wondering where they can find the jar for JBoss Dev Studio on a Linux: I have it at
添加到 Sid 和 Furrald 已经提到的内容。说明一个显而易见的，但如果有人想知道他们在哪里可以找到 Linux 上 JBoss Dev Studio 的 jar：我有它
<path-to-devStudio>/devstudio/studio/plugins/<name-and-version-of-jdt-core>.jar
