我正在尝试在Web应用程序中使用drools（我点击了NetBeans新项目 - ＆gt; Maven - ＆gt; Web应用程序并选择了GlassFish 4.1服务器）。
我在Maven Java Project（而不是Web App）中尝试了完全相同的代码并且它可以工作，但是在Web应用程序中，它什么都不做。这是代码：
public static final String pathDrl = "res/rules.drl";
public File fireRules() throws FileNotFoundException {
KieServices kieServices = KieServices.Factory.get();
KieFileSystem kfs = kieServices.newKieFileSystem();
FileInputStream fis = new FileInputStream(pathDrl);
kfs.write(pathDrl, kieServices.getResources().newInputStreamResource(fis));
KieBuilder kieBuilder = kieServices.newKieBuilder(kfs).buildAll();
Results results = kieBuilder.getResults();
if (results.hasMessages(org.kie.api.builder.Message.Level.ERROR)) {
System.out.println(results.getMessages());
throw new IllegalStateException("###> Errors in DRL <###");
}
KieContainer kieContainer = kieServices.newKieContainer(kieServices.getRepository().getDefaultReleaseId());
KieBase kieBase = kieContainer.getKieBase();
KieSession kSession = kieContainer.newKieSession();
StringBuilder s = new StringBuilder();
s.append("a");
kSession.insert(s);
kSession.fireAllRules();
System.out.println(s);
return null;
}
这是DRL文件：
rule "rule1"
when
s : StringBuilder()
then
s.append("AA");
end
MavenJavaProject中的输出：“aAA”，在网络应用中：“a”。
但是，当我运行服务器时，会弹出此警告：
Warning: Could not instantiate service class org.drools.compiler.cdi.KieCDIExtension
java.lang.NoClassDefFoundError: org/kie/api/runtime/KieContainer
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
at java.lang.Class.getConstructor0(Class.java:3075)
at java.lang.Class.getDeclaredConstructor(Class.java:2178)
at org.jboss.weld.util.ServiceLoader.prepareInstance(ServiceLoader.java:238)
at org.jboss.weld.util.ServiceLoader.loadService(ServiceLoader.java:214)
at org.jboss.weld.util.ServiceLoader.loadServiceFile(ServiceLoader.java:182)
at org.jboss.weld.util.ServiceLoader.reload(ServiceLoader.java:153)
at org.jboss.weld.util.ServiceLoader.iterator(ServiceLoader.java:297)
at org.glassfish.weld.DeploymentImpl.getExtensions(DeploymentImpl.java:466)
at org.glassfish.weld.WeldDeployer.event(WeldDeployer.java:218)
at org.glassfish.kernel.event.EventsImpl.send(EventsImpl.java:131)
at org.glassfish.internal.data.ApplicationInfo.load(ApplicationInfo.java:328)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:496)
at com.sun.enterprise.v3.server.ApplicationLoaderService.processApplication(ApplicationLoaderService.java:406)
at com.sun.enterprise.v3.server.ApplicationLoaderService.postConstruct(ApplicationLoaderService.java:243)
at org.jvnet.hk2.internal.ClazzCreator.postConstructMe(ClazzCreator.java:329)
at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:377)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:461)
at org.glassfish.hk2.runlevel.internal.AsyncRunLevelContext.findOrCreate(AsyncRunLevelContext.java:227)
at org.glassfish.hk2.runlevel.RunLevelContext.findOrCreate(RunLevelContext.java:84)
at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2258)
at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:105)
at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:87)
at org.glassfish.hk2.runlevel.internal.CurrentTaskFuture$QueueRunner.oneJob(CurrentTaskFuture.java:1162)
at org.glassfish.hk2.runlevel.internal.CurrentTaskFuture$QueueRunner.run(CurrentTaskFuture.java:1147)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.kie.api.runtime.KieContainer
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at com.sun.enterprise.v3.server.AppLibClassLoaderServiceImpl$URLClassFinder.findClass(AppLibClassLoaderServiceImpl.java:168)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 29 more
这就是我的pom.xml的样子：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>SoapServerMaven</groupId>
<artifactId>SoapServerMaven</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>SoapServerMaven</name>
<properties>
<endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<drools.version>6.2.0.Final</drools.version>
<jbpm.version>6.2.0.Final</jbpm.version>
</properties>
<dependencies>
<dependency>
<groupId>org.glassfish.metro</groupId>
<artifactId>webservices-rt</artifactId>
<version>2.3</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-core</artifactId>
<version>6.3.0.Final</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-compiler</artifactId>
<version>6.3.0.Final</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<compilerArguments>
<endorseddirs>${endorsed.dir}</endorseddirs>
</compilerArguments>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.6</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<outputDirectory>${endorsed.dir}</outputDirectory>
<silent>true</silent>
<artifactItems>
<artifactItem>
<groupId>javax</groupId>
<artifactId>javaee-endorsed-api</artifactId>
<version>7.0</version>
<type>jar</type>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
如果有人知道它为什么不起作用，我将非常感谢您的帮助，谢谢。