Java Eclipse Sample.drl中的drools插件显示错误

我是个流口水的新手。我在EclipseNeon中使用drools插件（6.4.0.Final）。我按照向导创建了一个包含一些示例文件的drools项目。完成这些步骤后，Eclipse突出显示了Sample.drl文件中两条规则的错误。以下是其中一个错误：

Multiple markers at this line
com.sample.DroolsTest.Message cannot be resolved to a type
org.drools.core.util.bitmask.AllSetBitMask cannot be resolved to a type
Only a type can be imported. com.sample.DroolsTest.Message resolves to a package
org.kie.api.runtime.rule.FactHandle cannot be resolved to a type
KnowledgeHelper cannot be resolved to a type
Only a type can be imported. org.drools.core.spi.KnowledgeHelper resolves to a package
Message.GOODBYE cannot be resolved to a type
org.kie.api.runtime.rule.RuleContext cannot be resolved to a type
java.lang.Exception cannot be resolved to a type

当我运行DroolsTest.java时，出现以下错误：

java.lang.RuntimeException: Error while creating KieBase[Message [id=1, level=ERROR, path=Sample.drl, line=15, column=0
text=Rule Compilation error Only a type can be imported.            com.sample.DroolsTest.Message resolves to a package
Only a type can be imported. org.drools.core.spi.KnowledgeHelper resolves to a package
KnowledgeHelper cannot be resolved to a type
org.kie.api.runtime.rule.FactHandle cannot be resolved to a type
java.lang.Exception cannot be resolved to a type
org.kie.api.runtime.rule.RuleContext cannot be resolved to a type], Message [id=2, level=ERROR, path=Sample.drl, line=5, column=0
text=Rule Compilation error Only a type can be imported.     com.sample.DroolsTest.Message resolves to a package
Only a type can be imported. org.drools.core.spi.KnowledgeHelper resolves to a package
KnowledgeHelper cannot be resolved to a type
com.sample.DroolsTest.Message cannot be resolved to a type
org.kie.api.runtime.rule.FactHandle cannot be resolved to a type
org.kie.api.runtime.rule.FactHandle cannot be resolved to a type
java.lang.Exception cannot be resolved to a type
org.kie.api.runtime.rule.RuleContext cannot be resolved to a type
Message.GOODBYE cannot be resolved to a type
org.drools.core.util.bitmask.AllSetBitMask cannot be resolved to a type
com.sample.DroolsTest.Message cannot be resolved to a type]]
at  org.drools.compiler.kie.builder.impl.KieContainerImpl.getKieBase(KieContainerImpl.java:450)
at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:604)
at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:575)

这似乎是一个图书馆路径问题。任何帮助都将不胜感激

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多谢各位

这是Neon或drools插件中的一个bug，它在drools插件（6.5.0.Final）中修复，基于此站点：

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但由于我没有找到发布的6.5.0.Final版本，您可以通过将eclipse降级到火星来修复此问题

这是Neon或drools插件中的一个错误，drools插件（6.5.0.Final）基于此网站修复了此错误：

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但是由于我没有找到发布的6.5.0.Final版本，您可以通过将eclipse降级到火星来解决这个问题

看起来您的导入语句不正确

com.sample.DroolsTest.Message解析为一个包

意味着您需要

import com.sample.DroolsTest.Message.*

取而代之的是？sample.drl是在向导之后生成的。我没有改变任何事情。按照建议更改导入后，我又遇到了一个错误：BuildError:无法解析ObjectType'Message'，我通过在Sample.drl中的两个规则中添加方言“mvel”修复了这个问题。示例中缺少方言，这是drools向导中的一个bug吗？或者它假设在没有方言的情况下工作？谢谢。我将Eclipse降级为Mars2，并重新安装了插件。现在可以了。谢谢。看来您的导入语句不正确

com.sample.DroolsTest.Message解析为一个包

意味着您需要

import com.sample.DroolsTest.Message.*

取而代之的是？sample.drl是在向导之后生成的。我没有改变任何事情。按照建议更改导入后，我又遇到了一个错误：BuildError:无法解析ObjectType'Message'，我通过在Sample.drl中的两个规则中添加方言“mvel”修复了这个问题。示例中缺少方言，这是drools向导中的一个bug吗？或者它假设在没有方言的情况下工作？谢谢。我将Eclipse降级为Mars2，并重新安装了插件。现在可以了。谢谢