java Spring Boot 和流口水集成
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Spring boot and drools integration
提问by gajos
I'm trying to run drools 6.2.0.Final with Spring Boot 1.2.2.RELEASE. I configured drools as the documentation says. My kie-context.xml configuration file is where I keep the drools beans and looks like this:
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drools。我的 kie-context.xml 配置文件是我保存 drools bean 的地方，看起来像这样：
<?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"/>
as i try to compile the application and run with spring-boot i get the following error:
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
The command I used for building the project is:
mvn clean packageand i run it as a jar file (java -jar application/target/application-1.0-SNAPSHOT.jar).
我用于构建项目的命令是：
mvn clean package我将它作为 jar 文件 ( java -jar application/target/application-1.0-SNAPSHOT.jar) 运行。
A thing that caught my attention is that the file path (the one which is not found) has an exclamation mark at the end (it is not supposed to be here). The other thing that i observed is that when i run the project in IntelijIdea ide it succeeds to build and works properly.
引起我注意的一件事是文件路径（未找到的那个）在末尾有一个感叹号（它不应该在这里）。我观察到的另一件事是，当我在 IntelijIdea ide 中运行该项目时，它会成功构建并正常工作。
What could be the reason of such error?
这种错误的原因可能是什么？
回答by jonashackt
I tried the same and ended up building an spring-boot-starter-droolsfor that, because there was nothing working for me out there. I didn′t use the XML-Configuration, because the latest Spring configuration is all about doing with Java only - i would also recommend that in your case.
我尝试了同样的方法，最终为此构建了一个spring-boot-starter-drools，因为那里没有任何适合我的东西。我没有使用 XML 配置，因为最新的 Spring 配置都是关于只使用 Java 的——我也建议在你的情况下使用。
Suggestions:
建议：
- Just use the starter, as decribed in the starter or in the example project
Integrating Drools into your Spring Boot-Project with this working configuration:
@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(); } }There are conflicts of spring-versions, because Spring Boot is based upon Spring 4.x and kie-spring depends on Spring 3.2 - i got the silliest Exceptions, till in the end I excluded all the 3.2-dependecies in my pom.xml:
<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>
- 只需使用启动器，如启动器或示例项目中所述
使用以下工作配置将 Drools 集成到您的 Spring Boot 项目中：
@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(); } }spring-versions 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，直到最后我在我的 pom.xml 中排除了所有 3.2-dependecies：
<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>
