org.springframework.dao.DataAccessResourceFailureException: Unable to write to file resource: [class path resource [report.xml]]; Spring Batch - spring

Question

I am developing Spring Batch - MongoDB to XML example. I have successfully developed the code, when I run the my main program. I see the following eror comes. I am not sure what is going wrong. I followed many links, but I dont see its not working fine.
org.springframework.dao.DataAccessResourceFailureException: Unable to write to file resource: [class path resource [report.xml]]; nested exception is java.io.FileNotFoundException: class path resource [report.xml] cannot be resolved to URL because it does not exist
at org.springframework.batch.item.xml.StaxEventItemWriter.open(StaxEventItemWriter.java:436) ~[spring-batch-infrastructure-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.item.xml.StaxEventItemWriter.open(StaxEventItemWriter.java:400) ~[spring-batch-infrastructure-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.item.support.CompositeItemStream.open(CompositeItemStream.java:96) ~[spring-batch-infrastructure-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.step.tasklet.TaskletStep.open(TaskletStep.java:310) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:197) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:148) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.flow.JobFlowExecutor.executeStep(JobFlowExecutor.java:64) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.flow.support.state.StepState.handle(StepState.java:67) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.flow.support.SimpleFlow.resume(SimpleFlow.java:169) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.flow.support.SimpleFlow.start(SimpleFlow.java:144) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.flow.FlowJob.doExecute(FlowJob.java:134) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:306) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:135) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50) [spring-core-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:128) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at com.mkyong.App.main(App.java:21) [classes/:na]
Caused by: java.io.FileNotFoundException: class path resource [report.xml] cannot be resolved to URL because it does not exist
at org.springframework.core.io.ClassPathResource.getURL(ClassPathResource.java:187) ~[spring-core-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.core.io.AbstractFileResolvingResource.getFile(AbstractFileResolvingResource.java:48) ~[spring-core-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.batch.item.xml.StaxEventItemWriter.open(StaxEventItemWriter.java:427) ~[spring-batch-infrastructure-3.0.7.RELEASE.jar:3.0.7.RELEASE]
... 15 common frames omitted
13:21:05.358 [main] DEBUG o.s.b.s.t.ResourcelessTransactionManager - Creating new transaction with name [org.springframework.batch.core.repository.support.SimpleJobRepository.updateExecutionContext]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT
13:21:05.367 [main] DEBUG o.s.b.s.t.ResourcelessTransactionManager - Initiating transaction commit
13:21:05.368 [main] DEBUG o.s.b.s.t.ResourcelessTransactionManager - Committing resourceless transaction on [org.springframework.batch.support.transaction.ResourcelessTransactionManager$ResourcelessTransaction#5b202a3a]
13:21:05.368 [main] DEBUG o.s.b.s.t.ResourcelessTransactionManager - Creating new transaction with name [org.springframework.batch.core.repository.support.SimpleJobRepository.update]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT
13:21:05.375 [main] DEBUG o.s.b.s.t.ResourcelessTransactionManager - Initiating transaction commit
13:21:05.375 [main] DEBUG o.s.b.s.t.ResourcelessTransactionManager - Committing resourceless transaction on [org.springframework.batch.support.transaction.ResourcelessTransactionManager$ResourcelessTransaction#5669c5fb]
13:21:05.379 [main] ERROR o.s.batch.core.step.AbstractStep - Exception while closing step execution resources in step step1 in job reportJob
java.lang.NullPointerException: null
at org.springframework.batch.item.xml.StaxEventItemWriter.close(StaxEventItemWriter.java:659) ~[spring-batch-infrastructure-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.item.support.CompositeItemStream.close(CompositeItemStream.java:85) ~[spring-batch-infrastructure-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.step.tasklet.TaskletStep.close(TaskletStep.java:305) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:271) ~[spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:148) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.flow.JobFlowExecutor.executeStep(JobFlowExecutor.java:64) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.flow.support.state.StepState.handle(StepState.java:67) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.flow.support.SimpleFlow.resume(SimpleFlow.java:169) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.flow.support.SimpleFlow.start(SimpleFlow.java:144) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.flow.FlowJob.doExecute(FlowJob.java:134) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:306) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:135) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50) [spring-core-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:128) [spring-batch-core-3.0.7.RELEASE.jar:3.0.7.RELEASE]
at com.mkyong.App.main(App.java:21) [classes/:na]
13:21:05.381 [main] DEBUG o.s.batch.core.step.AbstractStep - Step execution complete: StepExecution: id=1, version=2, name=step1, status=FAILED, exitStatus=FAILED, readCount=0, filterCount=0, writeCount=0 readSkipCount=0, writeSkipCount=0, processSkipCount=0, commitCount=0, rollbackCount=0
13:21:05.381 [main] DEBUG o.s.b.s.t.ResourcelessTransactionManager - Creating new transaction with name [org.springframework.batch.core.repository.support.SimpleJobRepository.updateExecutionContext]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT
13:21:05.383 [main] DEBUG o.s.b.s.t.ResourcelessTransactionManager - Initiating transaction commit
13:21:05.383 [main] DEBUG o.s.b.s.t.ResourcelessTransactionManager - Committing resourceless transaction on [org.springframework.batch.support.transaction.ResourcelessTransactionManager$ResourcelessTransaction#178213b]
13:21:05.383 [main] DEBUG o.s.b.c.job.flow.support.SimpleFlow - Completed state=reportJob.step1 with status=FAILED
13:21:05.385 [main] DEBUG o.s.b.c.job.flow.support.SimpleFlow - Handling state=reportJob.fail0
13:21:05.385 [main] DEBUG o.s.b.c.job.flow.support.SimpleFlow - Completed state=reportJob.fail0 with status=FAILED
13:21:05.388 [main] DEBUG o.s.batch.core.job.AbstractJob - Job execution complete: JobExecution: id=0, version=1, startTime=Sun Jan 08 13:21:05 IST 2017, endTime=null, lastUpdated=Sun Jan 08 13:21:05 IST 2017, status=FAILED, exitStatus=exitCode=FAILED;exitDescription=, job=[JobInstance: id=0, version=0, Job=[reportJob]], jobParameters=[{}]
13:21:05.388 [main] DEBUG o.s.b.s.t.ResourcelessTransactionManager - Creating new transaction with name [org.springframework.batch.core.repository.support.SimpleJobRepository.update]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT
13:21:05.397 [main] DEBUG o.s.b.s.t.ResourcelessTransactionManager - Initiating transaction commit
13:21:05.397 [main] DEBUG o.s.b.s.t.ResourcelessTransactionManager - Committing resourceless transaction on [org.springframework.batch.support.transaction.ResourcelessTransactionManager$ResourcelessTransaction#2d36e77e]
13:21:05.397 [main] INFO o.s.b.c.l.support.SimpleJobLauncher - Job: [FlowJob: [name=reportJob]] completed with the following parameters: [{}] and the following status: [FAILED]
Exit Status : FAILED
Done
job-report.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:batch="http://www.springframework.org/schema/batch" xmlns:task="http://www.springframework.org/schema/task"
xmlns:mongo="http://www.springframework.org/schema/data/mongo"
xmlns:util="http://www.springframework.org/schema/util" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">
<!-- connect to mongodb -->
<mongo:mongo host="127.0.0.1" port="27017" />
<mongo:db-factory dbname="yourdb" />
<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
<constructor-arg name="mongoDbFactory" ref="mongoDbFactory" />
</bean>
<batch:job id="reportJob">
<batch:step id="step1">
<batch:tasklet>
<batch:chunk reader="mongodbItemReader" writer="xmlItemWriter" commit-interval="1">
</batch:chunk>
</batch:tasklet>
</batch:step>
</batch:job>
<bean id="mongodbItemReader" class="org.springframework.batch.item.data.MongoItemReader">
<property name="template" ref="mongoTemplate" />
<property name="collection" value="report" />
<property name="targetType" value="com.mkyong.Report" />
<property name="query" value="" />
<property name="sort">
<util:map id="sort">
<entry key="id" value="" />
</util:map>
</property>
</bean>
<bean id="xmlItemWriter" class="org.springframework.batch.item.xml.StaxEventItemWriter">
<!-- <property name="resource" value="classpath:xml/report.xml" /> -->
<property name="resource" value="report.xml" />
<property name="marshaller" ref="reportMarshaller" />
<property name="rootTagName" value="record" />
</bean>
<!-- ==== Solution-1 ==== -->
<bean id="reportMarshaller" class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
<property name="classesToBeBound">
<value>com.mkyong.Report</value>
</property>
</bean>
<!-- ==== Solution-2 ==== -->
<!-- <bean id="reportMarshaller" class="org.springframework.oxm.xstream.XStreamMarshaller">
<property name="aliases">
<util:map id="aliases">
<entry key="record" value="com.mkyong.Report" />
</util:map>
</property>
<property name="converters">
<array>
<ref bean="reportConverter" />
</array>
</property>
</bean> -->
<bean id="reportConverter" class="com.mkyong.ReportConverter" />
</beans>
Report.java
#XmlRootElement(name = "record")
public class Report {
private int id;
private Date date;
private long impression;
private int clicks;
private BigDecimal earning;
#XmlAttribute(name = "id")
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
#XmlElement(name = "date")
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
#XmlElement(name = "impression")
public long getImpression() {
return impression;
}
public void setImpression(long impression) {
this.impression = impression;
}
#XmlElement(name = "clicks")
public int getClicks() {
return clicks;
}
public void setClicks(int clicks) {
this.clicks = clicks;
}
#XmlElement(name = "earning")
public BigDecimal getEarning() {
return earning;
}
public void setEarning(BigDecimal earning) {
this.earning = earning;
}
}
App.java
public class App {
public static void main(String[] args) {
String[] springConfig = { "database.xml", "context.xml", "job-report.xml" };
ApplicationContext context = new ClassPathXmlApplicationContext(springConfig);
JobLauncher jobLauncher = (JobLauncher) context.getBean("jobLauncher");
Job job = (Job) context.getBean("reportJob");
try {
JobExecution execution = jobLauncher.run(job, new JobParameters());
System.out.println("Exit Status : " + execution.getStatus());
} catch (Exception e) {
e.printStackTrace();
}
System.out.println("Done");
}
}
Looking forward to get the response.

Answer 1

It looks like the resource value for xmlItemWriter is incorrect. You can provide a classpath or file/URL.
See "Table 8.1. Resource strings" at this link http://docs.spring.io/spring/docs/current/spring-framework-reference/html/resources.html#resources-resourceloader