springboot drools整合

以下是Spring Boot Drools整合的步骤：

1.在pom.xml文件中添加Drools和Spring Boot Starter依赖项：

<dependency>
    <groupId>org.drools</groupId>
    <artifactId>drools-spring-boot-starter</artifactId>
    <version>7.73.0.Final</version>
</dependency>

2.创建Drools规则文件，例如rules.drl：

package com.example.rules

import com.example.model.Person;

rule "Age Rule"
    when
        $p : Person(age > 18)
    then
        System.out.println($p.getName() + " is an adult.");
end

3.在application.yml文件中配置Drools属性：

drools:
  rules:
    enabled: true
    files: classpath:/rules.drl

4.创建一个Person类，该类将用于在规则中使用：

package com.example.model;

public class Person {
    private String name;
    private int age;

    // getters and setters
}

5.创建一个DroolsService类，该类将用于在应用程序中执行规则：

package com.example.service;

import com.example.model.Person;
import org.kie.api.KieServices;
import org.kie.api.runtime.KieContainer;
import org.kie.api.runtime.KieSession;
import org.springframework.stereotype.Service;

@Service
public class DroolsService {
    public void executeRules(Person person) {
        KieServices kieServices = KieServices.Factory.get();
        KieContainer kieContainer = kieServices.getKieClasspathContainer();
        KieSession kieSession = kieContainer.newKieSession();

        kieSession.insert(person);
        kieSession.fireAllRules();
        kieSession.dispose();
    }
}

6.在应用程序中使用DroolsService类来执行规则：

package com.example;

import com.example.model.Person;
import com.example.service.DroolsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application {
    @Autowired
    private DroolsService droolsService;

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    public void run(String... args) throws Exception {
        Person person = new Person();
        person.setName("John");
        person.setAge(20);

        droolsService.executeRules(person);
    }
}