java - Drool 引擎文件没有被执行

Question

我正在尝试执行以下程序，但是 timesheet.drl 文件没有被调用，只是给出 o/p :最终时间表状态 null。无法找出问题所在。

资源:https://www.youtube.com/watch?v=POVe4QY_9p8

DroolDemoMain.Java

package com.sample;

import org.kie.api.KieServices;
import org.kie.api.runtime.KieContainer;
import org.kie.api.runtime.KieSession;

public class DroolDemoMain {

    public static void main(String[] args) {

      try {

          KieServices ks = KieServices.Factory.get();
          KieContainer kContainer = ks.getKieClasspathContainer();
          KieSession kSession = kContainer.newKieSession("ksession-rules");

          Timesheet timesheet = getTimesheetValues();
          kSession.insert(timesheet);
          kSession.fireAllRules();
          System.out.println("Final timesheet status "+ timesheet.getPayStatus());


    }
      catch(Throwable t) {  
          t.printStackTrace();
      }
   }

    private static Timesheet getTimesheetValues() {

        Timesheet timesheet = new Timesheet();
        timesheet.setEmployeeHours(5);
        timesheet.setProjectBudgetOk(true);
        timesheet.setOverlappingTimesheet(false);

        return timesheet;

    }
}

时间表.java

package com.sample;

public class Timesheet {

    private int employeeHours;
    private boolean projectBudgetOk;
    private boolean duplicateTimesheet;
    private boolean overlappingTimesheet;
    private String payStatus;

    public int getEmployeeHours() {
        return employeeHours;
    }
    public void setEmployeeHours(int employeeHours) {
        this.employeeHours = employeeHours;
    }
    public boolean isProjectBudgetOk() {
        return projectBudgetOk;
    }
    public void setProjectBudgetOk(boolean projectBudgetOk) {
        this.projectBudgetOk = projectBudgetOk;
    }
    public boolean isDuplicateTimesheet() {
        return duplicateTimesheet;
    }
    public void setDuplicateTimesheet(boolean duplicateTimesheet) {
        this.duplicateTimesheet = duplicateTimesheet;
    }
    public boolean isOverlappingTimesheet() {
        return overlappingTimesheet;
    }
    public void setOverlappingTimesheet(boolean overlappingTimesheet) {
        this.overlappingTimesheet = overlappingTimesheet;
    }
    public String getPayStatus() {
        return payStatus;
    }
    public void setPayStatus(String payStatus) {
        this.payStatus = payStatus;
    }

}

时间表.drl

package com.sample
import com.sample.Timesheet;

rule"Hours Less"
 when
  timesheet:Timesheet(employeeHours<8)
 then
 System.out.println("Employee hours Less Payment Denied");
 timesheet.setPayStatus("Denied");
end

kmodule.xml

<?xml version="1.0" encoding="UTF-8"?>
<kmodule xmlns="http://jboss.org/kie/6.0.0/kmodule">

    <kbase name="rules" packages="rules">
        <ksession name="ksession-rules"/>
    </kbase>

</kmodule>

谁能解释一下我的代码出了什么问题以及如何才能成功执行？

Screenshot of the project structure

Answer 1

在您的 kmodule.xml 中，packages 值是错误的。它应该与您在 drl 文件中提供的包匹配。