Question

我正在尝试从guvnor网络应用程序运行drl文件。

调用guvnor的程序如下所示

public class RunGuvnorRules {

public static final void main(String[] args) {
 try {  
        // load up the knowledge base
        KnowledgeBuilderConfiguration kbuilderconfiguration = KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration();
        KnowledgeBase kbase = readKnowledgeBase();  
        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();  
        Map<String, Object> params = new HashMap<String, Object>();
        LoanApplication loanApplication = new LoanApplication();  
        loanApplication.setAge(18);
        ksession.insert(loanApplication);
        ksession.addEventListener( new DebugAgendaEventListener() ); 
        ksession.addEventListener( new DebugWorkingMemoryEventListener() ); 
        ksession.fireAllRules();
        ksession.dispose();
        System.out.println("LoanApplication" + loanApplication.toString());
    } catch (Throwable t) {  
        t.printStackTrace();  
    }  

}



private static KnowledgeBase readKnowledgeBase() throws Exception {  
    String url = "http://localhost:8080/guvnor-5.5.0.Final-tomcat-6.0/org.drools.guvnor.Guvnor/package/mortgages/LATEST/assets/Underage.drl";  
    System.out.println("Going: " + url);  

    UrlResource resource = (UrlResource) ResourceFactory.newUrlResource(url);  
    resource.setBasicAuthentication("enabled");  
    resource.setUsername("admin");  
    resource.setPassword("admin");  

    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();  
    kbuilder.add(resource, ResourceType.DRL);  
    final KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
    return kbase;  
}  


}

drl文件Underage.drl是从guvnor获取的，点击URL如下

package mortgages


declare LoanApplication
firstName: String
lastName: String
state: String
bank: String
age: Integer
creditLimit: Integer
previousApplications: Integer
loanApproved: Boolean
interestRate: Integer
explanation: String
end
rule "Underage"
salience 10
dialect "mvel"
when
    application : LoanApplication( age < 21 )
then
    application.setExplanation( "Underage" );
    application.setLoanApproved( false );
end

为什么在从guvnor检索到的drl中添加了模型声明部分。如果删除此规则，则规则执行正常。删除声明部分并在本地执行drl后的日志语句

SLF4J：无法加载类“org.slf4j.impl.StaticLoggerBinder”。 SLF4J：默认为无操作（NOP）记录器实现 SLF4J：有关详细信息，请参阅http://www.slf4j.org/codes.html#StaticLoggerBinder。 ==＆gt; [BeforeActivationFiredEvent：getActivation（）= [激活规则=未成年，行为＃= 0，突出= 10，元组= [事实0：1：64587262：64587262：1：默认：LoanApplication [firstName = null，lastName = null，state = null，bank = null，age = 18，creditLimit = 0，previousApplications = 0，loanApproved = false，interestRate = 0，explanation = null]] ]，getKnowledgeRuntime（）= org.drools.impl.StatefulKnowledgeSessionImpl@1828ef60] ==＆gt; [AfterActivationFiredEvent：getActivation（）= [激活规则=未成年，行为＃= 0，突出= 10，元组= [事实0：1：64587262：64587262：1：默认：LoanApplication [firstName = null，lastName = null，state = null，bank = null，age = 18，creditLimit = 0，previousApplications = 0，loanApproved = false，interestRate = 0，explanation = Underage]] ]，getKnowledgeRuntime（）= org.drools.impl.StatefulKnowledgeSessionImpl@1828ef60] LoanApplicationLoanApplication [firstName = null，lastName = null，state = null，bank = null，age = 18，creditLimit = 0，previousApplications = 0，loanApproved = false，interestRate = 0，说明=未成年人]

如果我做错了，请告诉我

Answer 1

我想说你的应用程序中有一个名为'LoanApplication'的重复类：一个是在drl中定义并被规则使用的类，另一个是你在java代码中使用的类。问题在于你的问题的答案：

为什么在从中检索到的drl中添加了模型声明部分的Guvnor。？

答案是：因为你（或你团队中的某个人）在Guvnor中将其定义为“声明模型”。如果已经将LoanApplication定义为java类，那么你应该做的是在Guvnor中将包含它的jar文件导入为'POJO Model Jar'。

希望它有所帮助，

从Guvnor执行的规则未激活

1 个答案: