VOID main for spring batch example

[fusionobject]

Encountered an error executing the step
java.lang.NullPointerException
at org.batch.PlanWriter.write(PlanWriter.java:21)
at org.springframework.batch.core.step.item.SimpleChu nkProcessor.writeItems(SimpleChunkProcessor.java:

	<bean id="dataSource"
		class="org.springframework.jdbc.datasource.DriverManagerDataSource">
		<property name="driverClassName" value="oracle.jdbc.OracleDriver" />
		<property name="url"
			value="jdbc:oracle:thin:@ut:1010:orcl" />
		<property name="username" value="rf" />
		<property name="password" value="fr" />
	</bean>

	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>
	<tx:annotation-driven transaction-manager="transactionManager" />

	<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
		<property name="dataSource" ref="dataSource" />
	</bean>


<bean id="asyncTaskExecutor" class="org.springframework.core.task.SimpleAsyncTaskExecutor" />
	<bean id="syncTaskExecutor" class="org.springframework.core.task.SyncTaskExecutor" />

	<bean id="params" class="org.springframework.batch.core.JobParameters" />
	 
	<bean id="jobRepository"
		class="org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean">
		<property name="transactionManager" ref="transactionManager" />
	 
	</bean>


	 
	<bean id="jobLauncher"
		class="org.springframework.batch.core.launch.support.SimpleJobLauncher">
		<property name="jobRepository" ref="jobRepository" />
	</bean>

	<bean id="simpleStep"
		class="org.springframework.batch.core.step.item.SimpleStepFactoryBean"
		abstract="true">
		<property name="transactionManager" ref="transactionManager" />
		<property name="jobRepository" ref="jobRepository" />
 
	</bean>
	
	
	<batch:job id="simpleJob" job-repository="jobRepository">
		<batch:listeners>
			<batch:listener ref="appJobExecutionListener" />
		</batch:listeners>
		<batch:step id="planload" next="deleteFilesInDir" parent="simpleStep" >
			<batch:tasklet  >
				<batch:listeners>
					<batch:listener ref="itemFailureLoggerListener" />
				</batch:listeners>
				<batch:chunk reader="itemReader" writer="itemWriter"
					commit-interval="1000" />
			</batch:tasklet>
		</batch:step>
		<batch:step id="deleteFilesInDir" parent="simpleStep">
			<batch:tasklet ref="fileDeletingTasklet" />
		</batch:step>
	</batch:job>

 
	<bean id="itemReader" class="org.springframework.batch.item.file.FlatFileItemReader" >

		<property name="resource" value="file:c:\data\input\plans\plan.csv" />

		<property name="lineMapper">
			<bean class="org.springframework.batch.item.file.mapping.DefaultLineMapper">
				<property name="lineTokenizer">
					<bean
						class="org.springframework.batch.item.file.transform.DelimitedLineTokenizer">
						<property name="names" value="col1,col2,col3,col4" />
					</bean>
				</property>
				<property name="fieldSetMapper" ref="planMapper" />
			</bean>
		</property>
	</bean>


	<bean id="fileDeletingTasklet" class="org.batch.util.FileDeletingTasklet">
		<property name="directoryResource">
			<bean id="directory" class="org.springframework.core.io.FileSystemResource">
				<constructor-arg value="C:\data\input\plans\plan.csv" />
			</bean>
		</property>
	</bean>

</beans>

main contains

Resource res = new ClassPathResource("org/batch/csv2temp.xml"); 
		BeanFactory fac = new XmlBeanFactory(res);
		JobLauncher launcher = (JobLauncher)fac.getBean("jobLauncher");
		Job job = (Job)fac.getBean("simpleJob");
		JobParameters params = (JobParameters)fac.getBean("params");

Wahts wrong in that.

[arno]

it's hard to tell, because the null pointer exception comes from your code (PlanWriter). When launching the job, try to use an ApplicationContext implementation (like ClasspathXmlApplicationContext) instead of a BeanFactory.

[fusionobject]

can you please guide me to Some sample for that ?

[arno]

try this first:

ApplicationContext ctx = new ClassPathXmlApplicationContext("org/batch/csv2temp.xml");
JobLauncher launcher = (JobLauncher) ctx.getBean("jobLauncher");
...