Java 完全离线使用Drools 6 Maven体系结构

我正在使用Drools 6.0.1，并利用新的基于Maven的体系结构来部署我的规则

项目的POM如本文末尾所示

我使用参数

-Dkie.maven.settings.custom=“X:\\maven2\\settings.xml”

启动项目，以便为Drools使用单独的maven存储库。下面还显示了settings.xml

当我运行项目（.java）时，drools内部maven，即

Ether

，仍然将中央存储库添加到其内部配置中。这很糟糕，因为系统显然应该离线运行

然后运行的输出为：

DEBUG [main] (KieRepositoryImpl.java:91) - KieModule Lookup. ReleaseId de.itm.droolstest:x123:1.0.1 was not in cache, checking classpath
DEBUG [main] (KieRepositoryImpl.java:97) - KieModule Lookup. ReleaseId de.itm.droolstest:x123:1.0.1 was not in cache, checking maven repository
DEBUG [main] (Logs.java:390) - Add publisher: com.google.inject.internal.InjectorImpl@784eb2c

-----[explicit bindings]-------------------------------------------------------
0. ProviderInstanceBinding{key=Key[type=com.google.inject.Injector, annotation=[none]], source=[unknown source], scope=Scopes.NO_SCOPE, provider=Provider<Injector>}
1. ProviderInstanceBinding{key=Key[type=java.util.logging.Logger, annotation=[none]], source=[unknown source], scope=Scopes.NO_SCOPE, provider=Provider<Logger>}
2. ProviderInstanceBinding{key=Key[type=org.slf4j.Logger, annotation=[none]], source=[unknown source], scope=Scopes.NO_SCOPE, provider=Provider<org.slf4j.Logger>}
3. InstanceBinding{key=Key[type=com.google.inject.Stage, annotation=[none]], source=[unknown source], instance=DEVELOPMENT}
[...] (many more lines removed for brevity)
202. ConstructorBinding{key=Key[type=org.apache.maven.lifecycle.internal.LifecycleDebugLogger, annotation=[none]], source=ClassRealm[maven, parent: ClassRealm[maven-parent, parent: null]], scope=Scopes.SINGLETON}
-----[implicit bindings]-------------------------------------------------------
-------------------------------------------------------------------------------

 INFO [pool-1-thread-1] (NettyAsyncHttpProvider.java:199) - Number of application's worked threads is 8
DEBUG [pool-1-thread-1] (NettyAsyncHttpProvider.java:948) - 
Non cached request 
DefaultHttpRequest(chunked: false)
HEAD /nexus/content/groups/public/de/droolstest/x123/1.0.1/x123-1.0.1.jar HTTP/1.1
Host: nexus.my-domain.de:8081
Pragma: no-cache
Cache-Control: no-cache, no-store
Accept-Encoding: gzip
Connection: keep-alive
Accept: */*
User-Agent: Aether

using Channel 
[id: 0x0fd71519]

DEBUG [New I/O client worker #1-1] (NettyAsyncHttpProvider.java:1048) - 

Request DefaultHttpRequest(chunked: false)
HEAD /nexus/content/groups/public/de/itm/droolstest/x123/1.0.1/x123-1.0.1.jar HTTP/1.1
Host: nexus.my-domain.de:8081
Pragma: no-cache
Cache-Control: no-cache, no-store
Accept-Encoding: gzip
Connection: keep-alive
Accept: */*
User-Agent: Aether

Response DefaultHttpResponse(chunked: false)
HTTP/1.1 404 The server has not found anything matching the request URI
Date: Tue, 11 Mar 2014 09:42:48 GMT
Set-Cookie: rememberMe=deleteMe; Path=/nexus; Max-Age=0; Expires=Mon, 10-Mar-2014 09:42:48 GMT
Date: Tue, 11 Mar 2014 09:42:48 GMT
Vary: Accept-Charset, Accept-Encoding, Accept-Language, Accept
Server: Noelios-Restlet-Engine/1.1.6-SONATYPE-5348-V4
Content-Type: text/html;charset=ISO-8859-1
Cache-Control: must-revalidate,no-cache,no-store
Content-Length: 1533

DEBUG [New I/O client worker #1-1] (NettyConnectionsPool.java:147) - Adding uri: http://nexus.my-domain.de:8081 for channel [id: 0x0fd71519, /192.168.100.113:51272 => nexus.my-domain.de/192.168.100.145:8081]
Exception in thread "main" Exception in thread "FileRepositoryConnector-1" java.lang.IllegalArgumentException: number of transferred bytes cannot be negative
    at org.sonatype.aether.util.listener.DefaultTransferEvent.setTransferredBytes(DefaultTransferEvent.java:123)
    at org.sonatype.aether.connector.file.FileRepositoryWorker.run(FileRepositoryWorker.java:299)
    at org.sonatype.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:60)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
java.lang.IllegalArgumentException: number of transferred bytes cannot be negative
    at org.sonatype.aether.util.listener.DefaultTransferEvent.setTransferredBytes(DefaultTransferEvent.java:123)
    at org.sonatype.aether.connector.file.FileRepositoryWorker.run(FileRepositoryWorker.java:299)
    at org.sonatype.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:60)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)

x:\maven2\settings.xml

（用于drools的）：

---

Nexus通常包含发布工件，而不仅仅是构建期间使用的依赖项。但是，有可能阻止其使用。大概您的~/.m2/.settings.xml已配置为在查找工件时转到Nexus存储库而不是中央存储库。与将Maven配置为转到Nexus代理而不是central的方式类似，您只需更改~/.m2/.settings即可禁用从central下载发布和快照工件

<repositories>
  <repository>
    <id>central</id>
    <url>http://repo1.maven.org/maven2</url>
    <releases>
      <enabled>false</enabled>
    </releases>
    <snapshots>
      <enabled>false</enabled>
    </snapshots>
  </repository>
</repositories>

中心的
http://repo1.maven.org/maven2
假的
假的

我发现了潜在问题：。这是关于嵌入式maven不遵守显式

settings.xml

中配置的设置。该错误修复在Drools 6.1.0.Beta1中发布，并于周五在Maven存储库中发布——这就是我直到不久才找到它的原因

在新版本中，离线方面工作得更好，至少不会像这样连接到远程服务器

---

不过，仍然存在一个问题，即有效的Maven配置/pom确实考虑到了用于Drools项目的pom正在内部运行。这很糟糕，因为我不想把所有这些依赖项都放到Drools Maven存储库中。但这是另一个问题。

但我不想使用任何外部存储库，可能是central或我们的Nexus，供Drools Maven使用。上面的代码片段已经在Drools的

settings.xml

中了。你说发布和快照被禁用了吗？如果是的话，那么你已经没有使用它了。是的。我只在新安装的系统上安装了

settings.xml

，没有安装maven-该程序仍然尝试联系repo1.maven.org。如果不想让central记录有关Nexus安装的任何信息，可以将URL更改为localhost。这是个好主意，我会尝试一下。但与此同时，我发现了问题的根源，请参阅我的答案。

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
                      http://maven.apache.org/xsd/settings-1.0.0.xsd">

    <localRepository>x:/maven2/repository</localRepository>
    <interactiveMode>false</interactiveMode>
    <offline>true</offline>

    <profiles>
        <profile>
            <id>droolsOffline</id>
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>

            <repositories>
                <repository>
                    <id>central</id>
                    <url>http://repo1.maven.org/maven2</url>
                    <releases>
                        <enabled>false</enabled>
                    </releases>
                    <snapshots>
                        <enabled>false</enabled>
                    </snapshots>
                </repository>    
            </repositories>
        </profile>
    </profiles>
</settings>

import org.kie.api.*;

public class MainKieTest {

    public static void main(String[] args) {
        KieServices ks = KieServices.Factory.get();
        KieRepository repository = ks.getRepository();
        ReleaseId releaseId = ks.newReleaseId("de.test.droolstest", "x123", "1.0.1");
        KieContainer kieContainer = ks.newKieContainer(releaseId);
    }
}

<repositories>
  <repository>
    <id>central</id>
    <url>http://repo1.maven.org/maven2</url>
    <releases>
      <enabled>false</enabled>
    </releases>
    <snapshots>
      <enabled>false</enabled>
    </snapshots>
  </repository>
</repositories>