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<ul> <li>I have a problem where in I need to receive a series of messages from an MQ queue and write this to a file and initiate a spring batch job with the file as input</li> </ul> One way to do that would be engage a bit of Spring Integration, where you would have a file poller, that would poll for a new file: <pre><code><file:inbound-channel-adapter id="filePoller" channel="filesAreComing" directory="file:${input.directory}" filename-pattern="test*" /> </code></pre> Adapt a <code>file message</code> ( java.io.File ) to a <code>file name</code> ( String ), since that is what Spring Batch needs. This can be done with a JobLauncher adapter, that is already available from Spring Batch Admin <a href="https://src.springframework.org/svn/spring-batch-admin/trunk/spring-batch-admin-manager/src/main/java/org/springframework/batch/admin/integration/FileToJobLaunchRequestAdapter.java" rel="noreferrer">here</a>: <pre><code>@ServiceActivator public JobLaunchRequest adapt(File file) throws NoSuchJobException { JobParameters jobParameters = new JobParametersBuilder().addString( "input.file", file.getAbsolutePath()).toJobParameters(); return new JobLaunchRequest(job, jobParameters); } </code></pre> wrap it to a <code>JobLaunchRequest</code> ( which is just a holder for a <code>Job</code> and <code>JobParameters</code> ) and send this request [as a message] to <code>JobLaunchingMessageHandler</code>: <pre><code><service-activator input-channel="jobLauncher"> <beans:bean class="org.springframework.batch.integration.launch.JobLaunchingMessageHandler"> <beans:constructor-arg ref="jobLauncher" /> </beans:bean> </service-activator> </code></pre> that would launch the job. "input.file" is a parameter that is bound at runtime ( hence #{...} ): <pre><code><bean id="reader" class="org.springframework.batch.item.file.FlatFileItemReader" scope="step"> <property name="resource" value="#{jobParameters[input.file]}" /> ... line mapper and other props </bean> </code></pre>
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