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Spring Boot和Drools集成

spring-boot

我正在尝试使用Spring Boot 1.2.2.RELEASE运行Drools 6.2.0.Final。我按照文档中的说明配置了流口水。我的kie-
context.xml配置文件是存放drools bean的位置，如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:kie="http://drools.org/schema/kie-spring"
   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
                      http://drools.org/schema/kie-spring http://drools.org/schema/kie-spring.xsd">

<kie:kmodule id="sample_module">
    <kie:kbase name="kbase1" packages="composition-rules">
        <kie:ksession name="ksession1" type="stateless"/>
    </kie:kbase>
</kie:kmodule>

<bean id="kiePostProcessor" class="org.kie.spring.KModuleBeanFactoryPostProcessor"/>

当我尝试编译应用程序并使用spring-boot运行时，出现以下错误：

java.lang.IllegalStateException: LifecycleProcessor not initialized - call 'refresh' before invoking lifecycle methods via the context: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6ab6cc3b: startup date [Wed Apr 15 13:57:02 CEST 2015]; root of context hierarchy
at org.springframework.context.support.AbstractApplicationContext.getLifecycleProcessor(AbstractApplicationContext.java:357)
at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:877)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.doClose(EmbeddedWebApplicationContext.java:150)
at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:836)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:342)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
at skeleton.StorfinoApplication.main(StorfinoApplication.java:23)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:53)
at java.lang.Thread.run(Thread.java:745)

java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:53)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: Unable to get all ZipFile entries: /home/lukasz/dev/skeleton/application/target/application-1.0-SNAPSHOT.jar!
at org.drools.core.util.IoUtils.indexZipFile(IoUtils.java:133)
at org.drools.compiler.kie.builder.impl.ZipKieModule.<init>(ZipKieModule.java:20)
at org.drools.compiler.kie.builder.impl.ClasspathKieProject.createInternalKieModule(ClasspathKieProject.java:186)
at org.kie.spring.KModuleBeanFactoryPostProcessor.createKieModule(KModuleBeanFactoryPostProcessor.java:189)
at org.kie.spring.KModuleBeanFactoryPostProcessor.addKieModuleToRepo(KModuleBeanFactoryPostProcessor.java:162)
at org.kie.spring.KModuleBeanFactoryPostProcessor.postProcessBeanFactory(KModuleBeanFactoryPostProcessor.java:121)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:265)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:177)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:606)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:462)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
at skeleton.StorfinoApplication.main(StorfinoApplication.java:23)
... 6 more
Caused by: java.io.FileNotFoundException: /home/user-name/dev/skeleton/application/target/application-1.0-SNAPSHOT.jar! (No such file or directory)
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:220)
at java.util.zip.ZipFile.<init>(ZipFile.java:150)
at java.util.zip.ZipFile.<init>(ZipFile.java:164)
at org.drools.core.util.IoUtils.indexZipFile(IoUtils.java:124)
... 21 more

我用于构建项目的命令是： mvn clean package我将其作为jar文件（java -jar application/target/application-1.0-SNAPSHOT.jar）运行。

引起我注意的是，文件路径（未找到的文件路径）在末尾带有感叹号（不应在此处）。我观察到的另一件事是，当我在IntelijIdea
ide中运行该项目时，它可以成功构建并正常工作。

这种错误的原因可能是什么？


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2020-05-30

共1个答案

小编典典

我尝试了同样的方法，最终为此制造了一个spring-boot-starter-drools，因为在那里没有任何工作可用。我没有使用XML-Configuration，因为最新的Spring配置仅与Java有关-我也建议您这样做。

意见建议：

  1. 只需使用启动程序，如启动程序或示例项目中所述
  2. 通过以下工作配置将Drools集成到您的Spring Boot-Project中：
@Configuration
public class DroolsAutoConfiguration {

private static final String RULES_PATH = "rules/";

@Bean
public KieFileSystem kieFileSystem() throws IOException {
KieFileSystem kieFileSystem = getKieServices().newKieFileSystem();
for (Resource file : getRuleFiles()) {
    kieFileSystem.write(ResourceFactory.newClassPathResource(RULES_PATH + file.getFilename(), "UTF-8"));
}        
return kieFileSystem;
}

private Resource[] getRuleFiles() throws IOException {
ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver();
return resourcePatternResolver.getResources("classpath*:" + RULES_PATH + "**/*.*");
}

@Bean
public KieContainer kieContainer() throws IOException {
final KieRepository kieRepository = getKieServices().getRepository();

kieRepository.addKieModule(new KieModule() {
    public ReleaseId getReleaseId() {
        return kieRepository.getDefaultReleaseId();
    }
});

KieBuilder kieBuilder = getKieServices().newKieBuilder(kieFileSystem()); 
kieBuilder.buildAll();

return getKieServices().newKieContainer(kieRepository.getDefaultReleaseId());
}

private KieServices getKieServices() {
return KieServices.Factory.get();
}

@Bean
public KieBase kieBase() throws IOException {
return kieContainer().getKieBase();
}

@Bean
public KieSession kieSession() throws IOException {
return kieContainer().newKieSession();
}

@Bean
public KModuleBeanFactoryPostProcessor kiePostProcessor() {
return new KModuleBeanFactoryPostProcessor();
}
}
  1. spring版本之间存在冲突，因为Spring Boot基于Spring 4.x，而kie-spring依赖于Spring 3.2-我得到了最愚蠢的异常，直到最后，我在pom.xml中排除了所有3.2依赖项：
<dependency>
<groupId>org.kie</groupId>
<artifactId>kie-spring</artifactId>
<version>${drools.version}</version>
<exclusions>
<exclusion>
    <groupId>org.springframework</groupId>
    <artifactId>spring-tx</artifactId>
</exclusion>
<exclusion>
    <groupId>org.springframework</groupId>
    <artifactId>spring-beans</artifactId>
</exclusion>
<exclusion>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
</exclusion>
<exclusion>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
</exclusion>
</exclusions>
</dependency>
2020-05-30