我们使用spring boot drools-maven依赖性drl文件来实现我们的spring boot应用程序中的某些业务规则。我们在版本7.73.0中使用了以下drools依赖性（drools内核、drools编译器、droolsdecisiontables）。在drools从版本7.73.0.Final更新到8.29.0.Final后，集成不起作用。请查找实现和错误跟踪下面。有人能帮忙解决这个问题吗

我的配置类

@Configuration
public class DroolsConfig {

    private static final String RULES_DRL = "rules/rule-impl.drl";
    private static final KieServices kieServices = KieServices.Factory.get();

    @Bean
    public KieContainer kieContainer() {
        KieFileSystem kieFileSystem = kieServices.newKieFileSystem();
        kieFileSystem.write(ResourceFactory.newClassPathResource(RULES_DRL));
        KieBuilder kb = kieServices.newKieBuilder(kieFileSystem);
        kb.buildAll();
        KieModule kieModule = kb.getKieModule();
        return kieServices.newKieContainer(kieModule.getReleaseId());
    }

}

正在调用类

 @Autowired
    private KieContainer kieContainer;

    public String applyCleansingRules(String name) {
         /////////
        KieSession kieSession = kieContainer.newKieSession();
        /////
        kieSession.insert(name);
        kieSession.fireAllRules(1);
        kieSession.dispose();
        return /////
    }

错误信息：

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.0.jar:2.7.0]
    at com.rule.engine.RuleEngineApplication.main(RuleEngineApplication.java:10) ~[classes/:na]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'kieContainer' defined in class path resource [com/rule/engine/config/DroolsConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.kie.api.runtime.KieContainer]: Factory method 'kieContainer' threw exception; nested exception is java.lang.NullPointerException
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:486) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1389) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1309) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:656) ~[spring-beans-5.3.20.jar:5.3.20]
    ... 20 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.kie.api.runtime.KieContainer]: Factory method 'kieContainer' threw exception; nested exception is java.lang.NullPointerException
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.3.20.jar:5.3.20]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ~[spring-beans-5.3.20.jar:5.3.20]
    ... 33 common frames omitted
Caused by: java.lang.NullPointerException: null
    at org.drools.compiler.rule.builder.PatternBuilder.buildAnalysis(PatternBuilder.java:1597) ~[drools-compiler-8.29.0.Final.jar:8.29.0.Final]
    at org.drools.compiler.rule.builder.PatternBuilder.buildEval(PatternBuilder.java:1499) ~[drools-compiler-8.29.0.Final.jar:8.29.0.Final]

跟踪JUnit测试：

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name '******Service': Unsatisfied dependency expressed through field 'kieContainer'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'kieContainer' defined in class path resource [com/rule/engine/config/DroolsConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.kie.api.runtime.KieContainer]: Factory method 'kieContainer' threw exception; nested exception is java.lang.NullPointerException
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'kieContainer' defined in class path resource [com/rule/engine/config/DroolsConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.kie.api.runtime.KieContainer]: Factory method 'kieContainer' threw exception; nested exception is java.lang.NullPointerException
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.kie.api.runtime.KieContainer]: Factory method 'kieContainer' threw exception; nested exception is java.lang.NullPointerException
Caused by: java.lang.NullPointerException