将 Drool 6 工作台与 Java 应用程序集成

Question

我有一个 drool 6 工作台。我正在尝试从工作台读取规则并在独立的 Java 应用程序中执行它们。有什么方法可以使用工作台中的 URL 下载 drl 文件。请写代码以及我是流口水的新手

Answer 1

你的 pom.xml 应该有这些依赖

<dependency>
  <groupId>org.drools</groupId>
  <artifactId>drools-compiler</artifactId>
  <version>6.0.0.Final</version>
   <scope>provided</scope>
</dependency>

<dependency>
  <groupId>org.drools</groupId>
  <artifactId>drools-core</artifactId>
  <version>6.0.0.Final</version>
   <scope>provided</scope>
</dependency>

<dependency>
  <groupId>org.kie</groupId>
  <artifactId>kie-internal</artifactId>
  <version>6.0.0.Final</version>
   <scope>provided</scope>
</dependency>

<dependency>
  <groupId>org.kie</groupId>
  <artifactId>kie-api</artifactId>
  <version>6.0.0.Final</version>
   <scope>provided</scope>
</dependency>

<dependency>
  <groupId>org.drools</groupId>
  <artifactId>drools-templates</artifactId>
  <version>6.0.0.Final</version>
   <scope>provided</scope>
</dependency>

<dependency>
  <groupId>org.mvel</groupId>
  <artifactId>mvel2</artifactId>
  <version>2.1.7.Final</version>
   <scope>provided</scope>
</dependency>

<dependency>
  <groupId>org.antlr</groupId>
  <artifactId>antlr-runtime</artifactId>
  <version>3.5</version>
   <scope>provided</scope>
</dependency>

<dependency>
  <groupId>org.apache.poi</groupId>
  <artifactId>poi-ooxml</artifactId>
  <version>3.9</version>
   <scope>provided</scope>
</dependency>


<dependency>
  <groupId>org.drools</groupId>
  <artifactId>drools-decisiontables</artifactId>
  <version>6.0.0.Final</version>
   <scope>provided</scope>
</dependency>

<dependency>
  <groupId>org.eclipse.jdt</groupId>
  <artifactId>org.eclipse.jdt.core</artifactId>
  <version>3.7.1</version>
   <scope>provided</scope>
</dependency>

<dependency>
  <groupId>com.thoughtworks.xstream</groupId>
  <artifactId>xstream</artifactId>
  <version>1.4.3</version>
   <scope>provided</scope>
</dependency>

<dependency>
  <groupId>com.google.protobuf</groupId>
  <artifactId>protobuf-java</artifactId>
  <version>2.5.0</version>
  <scope>provided</scope>
</dependency>

或者你的类路径文件应该有这些 jars

drools-decisiontables-6.0.0.Final.jar
drools-core-6.0.0.Final.jar
kie-internal-6.0.0.Final.jar
kie-api-6.0.0.Final.jar

drools-templates-6.0.0.Final.jar slf4j-api-1.7.5.jar drools-compiler-6.0.0.Final.jar mvel2-2.1.7.Final.jar
antlr-runtime-3.5.jar
poi-ooxml-3.9.jar
poi-3.10-beta2.jar
commons-lang-2.4.jar
xstream-1.4.3.jar
protobuf-java-2.5.0.jar
org.eclipse.jdt.core-3.7.1.jar

Answer 2

首先创建 Java 应用程序，包括所有基于 drools 6 的二进制依赖项。为此，您可以创建 Maven 驱动的 java 应用程序。 在 POM.xml 文件中包含以下依赖项。它会将所有依赖项下载到本地 maven 存储库中。

<parent>
    <groupId>org.drools</groupId>
    <artifactId>drools-multiproject</artifactId>
    <version>6.0.1.Final</version>
</parent>
 <dependencies>      
    <!-- Internal dependencies -->
    <dependency>
        <groupId>org.kie</groupId>
        <artifactId>kie-api</artifactId>
    </dependency>
    <dependency>
        <groupId>org.kie</groupId>
        <artifactId>kie-ci</artifactId>            
    </dependency>
    <dependency>
        <groupId>org.drools</groupId>
        <artifactId>drools-core</artifactId>
    </dependency>
    <dependency>
        <groupId>org.drools</groupId>
        <artifactId>drools-compiler</artifactId>
    </dependency>
    <dependency>
        <groupId>org.drools</groupId>
        <artifactId>drools-decisiontables</artifactId>
    </dependency>
    <dependency>
        <groupId>org.drools</groupId>
        <artifactId>drools-templates</artifactId>
    </dependency>

    <!-- Needed for logging -->
    <dependency>
        <groupId>com.thoughtworks.xstream</groupId>
        <artifactId>xstream</artifactId>
    </dependency>

    <!-- Logging -->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
    </dependency>    
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
    </dependency>
    <dependency><!-- For example app logging: configure in src/java/resources/logback.xml -->
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
    </dependency>
</dependencies>

还要在 pom.xml 中指定配置文件：

<profiles>
    <profile>
        <activation>
            <activeByDefault>true</activeByDefault>
        </activation>
        <repositories>
            <repository>
                <id>guvnor-m2-repo</id>
                <name>Drools Workbench Repository Group</name>
                <url>http://localhost:4040/kie-drools-wb-distribution-wars-6.0.1.Final-tomcat7.0/maven2/</url>
                <layout>default</layout>
                <releases>
                    <enabled>true</enabled>
                    <updatePolicy>always</updatePolicy>
                </releases>
            </repository>
        </repositories>
    </profile>
</profiles>

在 main.java 中

public static void main(String[] args) {
    ReleaseIdImpl releaseId = new ReleaseIdImpl("groupId", "artifactId", "LATEST");

    KieServices ks = KieServices.Factory.get();

    KieContainer kieContainer = ks.newKieContainer(releaseId);

    KieScanner kScanner = ks.newKieScanner(kieContainer);
    kScanner.start(10000L);             
    Scanner scanner = new Scanner(System.in);
    while (true) {
        runRule(kieContainer);
        System.out.println("Press enter in order to run the test again....");
        scanner.nextLine();
    }
  }
   private static void runRule(KieContainer kieKontainer) {
    KieSession newKieSession = kieKontainer.newKieSession();

    //Initiate POJO on which you want to define rule like
    //BankLoan bankLoan = new BankLoan();
      //  bankLoan.setLoanAmount(10000);
       // bankLoan.setLoanPeriod(11);

      //Insert into kieSession
       newKieSession.insert(bankLoan);

    int result = newKieSession.fireAllRules();
    newKieSession.dispose();
}