Question

当我尝试运行此代码来执行batchjob时：

JobOperator jo = BatchRuntime.getJobOperator();
Properties props = new Properties();
long jobId = jo.start("tweetimport", props);

我一直收到错误。当我试图从servlet运行它时，我收到了这个错误：

Severe:   Could not instantiate service: com.ibm.jbatch.container.impl.BatchKernelImpl due to exception:java.lang.reflect.InvocationTargetException
Warning:   StandardWrapperValve[KwetterServlet]: Servlet.service() for servlet KwetterServlet threw exception
java.util.ServiceConfigurationError: javax.batch.operations.JobOperator: Provider com.ibm.jbatch.container.api.impl.JobOperatorImpl could not be instantiated

当我从普通的java类运行它时，我得到了这个错误：

mrt 21, 2016 10:19:08 AM javax.batch.runtime.BatchRuntime getJobOperator
WARNING: The ServiceLoader was unable to find an implementation for JobOperator. Check classpath for META-INF/services/javax.batch.operations.JobOperator file.
Exception in thread "main" java.lang.NullPointerException

我在其他来源中有这个tweetimport.xml文件＆gt; src / main / resources＆gt; META-INF.batch的作业

<job id="tweetimport" xmlns="http://xmlns.jcp.org/xml/ns/javaee" version="1.0">
<properties>
    <property name="input_file" value="/KwetterBackend/kwetter-input.json"/>
</properties>
<step id="process">
    <chunk item-count="100">
        <reader ref="TweetReader"></reader>
        <processor ref="TweetProcessor"></processor>
        <writer ref="TweetWriter"></writer>
    </chunk>
</step>

我无法弄清楚为什么我会收到此错误。 The link to my project

Answer 1

我已经找到了答案，我必须启动这个程序：glassfish-4.1 \ bin \ asadmin，然后执行这一行：

connectToServerWithNickname

现在工作正常。

JobOperator无法实例化

1 个答案: