Reading from XML File having Error

[adish1234]

HI,
I am trying the run the xmlStaxJob job which read from XML file but i am getting an error
SEVERE: Job Terminated in error:
java.lang.NullPointerException
at org.springframework.batch.core.launch.support.Comm andLineJobRunner.start(CommandLineJobRunner.java:2 05) at org.springframework.batch.core.launch.support.Comm andLineJobRunner.ma
in(CommandLineJobRunner.java:252)Mar 5, 2009 10:58:30 AM org.springframework.context.support.AbstractApplic ationC
ontext doClose

Please let me know if i am doing something wrong.
XML File
?xml version="1.0" encoding="UTF-8"?>
<records>
<trade xmlns="http://springframework.org/batch/sample/io/oxm/domain">
<isin>XYZ0001</isin>
<quantity>5</quantity>
<price>11.39</price>
<customer>Customer1</customer>
</trade>
<trade xmlns="http://springframework.org/batch/sample/io/oxm/domain">
<isin>XYZ0002</isin>
<quantity>2</quantity>
<price>72.99</price>
<customer>Customer2c</customer>
</trade>
</records>
Here is my Job.


<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns="http://www.springframework.org/schema/p"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schem...-beans-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schem...ng-aop-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schem...ing-tx-2.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd">
<description>
Batch Byte Process
</description>

<import resource="data-source-context.xml" />

<bean id="jobRepository"
class="org.springframework.batch.core.repository.s upport.JobRepositoryFactoryBean">
<property name="databaseType" value="mysql" />
<property name="dataSource" ref="dataSourceMYSQL" />
<property name="transactionManager" ref="transactionManager" />
</bean>
<bean id="simpleStep" class="org.springframework.batch.core.step.item.Si mpleStepFactoryBean"
abstract="true">
<property name="transactionManager" ref="transactionManager" />
<property name="jobRepository" ref="jobRepository" />
<property name="startLimit" value="100" />
<property name="commitInterval" value="1" />
</bean>
<bean id="mapJobRepository" class="org.springframework.batch.core.repository.s upport.MapJobRepositoryFactoryBean" >
<property name="transactionManager" ref="transactionManager"/>
</bean>
<bean id="xmlByteProcessJob" class="org.springframework.batch.core.job.SimpleJo b">
<property name="steps">
<bean id="step1" parent="simpleStep">
<property name="itemReader">
<bean
class="org.springframework.batch.item.xml.StaxEven tItemReader">
<property name="fragmentRootElementName"
value="trade" />
<property name="resource"
value="file:C:\xmlInput\20070918.testStream.xmlFil eStep.xml" />
<property name="fragmentDeserializer">
<bean
class="org.springframework.batch.item.xml.oxm.Unma rshallingEventReaderDeserializer">
<constructor-arg>
<bean
class="org.springframework.oxm.xstream.XStreamMars haller">
<property name="aliases"
ref="aliases" />
</bean>
</constructor-arg>
</bean>
</property>
</bean>
</property>
<property name="itemWriter" ref="tradeStaxWriter" />
</bean>
</property>
<property name="jobRepository" ref="jobRepository" />
<property name="restartable" value="true" />
</bean>

<bean class="org.springframework.batch.item.xml.StaxEven tItemWriter"
id="tradeStaxWriter">
<property name="resource"
value="file:C:\xmlInput\20070918.testStream.xmlFil eStep.output.xml" />
<property name="serializer" ref="tradeMarshallingSerializer" />
<property name="rootTagName" value="trades" />
<property name="overwriteOutput" value="true" />
</bean>

<bean
class="org.springframework.batch.item.xml.oxm.Mars hallingEventWriterSerializer"
id="tradeMarshallingSerializer">
<constructor-arg>
<bean
class="org.springframework.oxm.xstream.XStreamMars haller">
<property name="aliases" ref="aliases" />
</bean>
</constructor-arg>
</bean>

<util:map id="aliases">
<entry key="trade"
value="us.tn.state.trust.batch.byteProcess.domain. Trade" />
<entry key="isin" value="java.lang.String" />
<entry key="quantity" value="long" />
<entry key="price" value="java.math.BigDecimal" />
<entry key="customer" value="java.lang.String" />
</util:map>
<bean id="customEditorConfigurer" class="org.springframework.beans.factory.config.Cu stomEditorConfigurer">
<property name="customEditors">
<map>
<entry key="int[]">
<bean class="org.springframework.batch.support.IntArrayP ropertyEditor" />
</entry>
<entry key="org.springframework.batch.item.file.transform .Range[]">
<bean class="org.springframework.batch.item.file.transfo rm.RangeArrayPropertyEditor" />
</entry>
<entry key="java.util.Date">
<bean class="org.springframework.beans.propertyeditors.C ustomDateEditor">
<constructor-arg>
<bean class="java.text.SimpleDateFormat">
<constructor-arg value="yyyyMMdd" />
</bean>
</constructor-arg>
<constructor-arg value="false" />
</bean>
</entry>
</map>
</property>
</bean>

<bean id="logAdvice" class="org.springframework.batch.sample.advice.Pro cessorLogAdvice" />

<bean id="eventAdvice" class="org.springframework.batch.sample.advice.Ste pExecutionApplicationEventAdvice" />
</beans>


Pls. help..........

[lucasward]

That is definitely not enough information to help with an issue, it may even be completely unrelated to the XML reading. I think you need to change your log levels to try and get a more detailed error. Also, please use code tags when posting stack traces or code snippets.

[adish1234]

Can you please check my xml file reading

<bean id="xmlByteProcessJob" class="org.springframework.batch.core.job.SimpleJob">
		<property name="steps">
			<bean id="step1" parent="simpleStep">
				<property name="itemReader">
					<bean
						class="org.springframework.batch.item.xml.StaxEventItemReader">
						<property name="fragmentRootElementName"
							value="records" />
						<property name="resource"
							value="file:C:/xmlInput/20070918.testStream.xmlFileStep.xml" />
						<property name="fragmentDeserializer">
							<bean
								class="org.springframework.batch.item.xml.oxm.UnmarshallingEventReaderDeserializer">
								<constructor-arg>
									<bean
										class="org.springframework.oxm.xstream.XStreamMarshaller">
										<property name="aliases"
											ref="aliases" />
									</bean>
								</constructor-arg>
							</bean>
						</property>
					</bean>
				</property>
				<property name="itemWriter" ref="tradeStaxWriter" />
			</bean>
		</property>
		<property name="jobRepository" ref="jobRepository" />
		<property name="restartable" value="true" />
	</bean>
<util:map id="aliases">
		<entry key="trade"
			value="SpringBatchTest.domain.Trade" />
		<entry key="isin" value="java.lang.String" />
		<entry key="quantity" value="long" />
		<entry key="price" value="java.math.BigDecimal" />
		<entry key="customer" value="java.lang.String" />
	</util:map>

my XML File is

<?xml version="1.0" encoding="UTF-8"?>
<records>
  <trade>
    <isin>XYZ0001</isin>
    <quantity>5</quantity>
    <price>11.39</price>
    <customer>Customer1</customer>
  </trade>
</record>

and i have written my domain class which is

public class Trade implements Serializable {
    private String isin = "";
    private long quantity = 0;
    private BigDecimal price = new BigDecimal(0);
    private String customer = "";

    public Trade() {
    }
    
    public Trade(String isin, long quantity, BigDecimal price, String customer){
    	this.isin = isin;
    	this.quantity = quantity;
    	this.price = price;
    	this.customer = customer;
    }

    public void setCustomer(String customer) {
		this.customer = customer;
	}

	public void setIsin(String isin) {
		this.isin = isin;
	}

	public void setPrice(BigDecimal price) {
		this.price = price;
	}

	public void setQuantity(long quantity) {
		this.quantity = quantity;
	}

	public String getIsin() {
        return isin;
    }

    public BigDecimal getPrice() {
        return price;
    }

    public long getQuantity() {
        return quantity;
    }

    public String getCustomer() {
        return customer;
    }

    public String toString() {
        return "Trade: [isin=" + this.isin + ",quantity=" + this.quantity + ",price="
            + this.price + ",customer=" + this.customer + "]";
    }
    
    public boolean equals(Object o) {
		return EqualsBuilder.reflectionEquals(this, o);
	}

	public int hashCode() {
		return HashCodeBuilder.reflectionHashCode(this);
	}
}

Please let me know if i am doing anything wrong. Your input is very important to me. Thanks a lot

[lucasward]

It would really help if you could provide a stack trace as well.

[adish1234]

It would really help if you could provide a stack trace as well.

This is my Stack Trace

C:\workSpaces\Batch-ByteProcess>java -jar target\Batch-ByteProcess-1.0.jar ByteProcessJob.xml xmlByteProcessJob schedule.run=86
Mar 5, 2009 3:32:06 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@e5b723: display name [org.springframework.context.support.ClassPathXmlApplic
ationContext@e5b723]; startup date [Thu Mar 05 15:32:06 CST 2009]; root of context hierarchy
Mar 5, 2009 3:32:06 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [ByteProcessJob.xml]
Mar 5, 2009 3:32:07 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [data-source-context.xml]
Mar 5, 2009 3:32:07 PM org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory
INFO: Bean factory for application context [org.springframework.context.support.ClassPathXmlApplicationContext@e5b723]: org.springframework.beans.factory.suppor
t.DefaultListableBeanFactory@1f06dc3
Mar 5, 2009 3:32:07 PM org.springframework.core.io.support.PropertiesLoaderSupport loadProperties
INFO: Loading properties file from class path resource [jdbc.properties]
Mar 5, 2009 3:32:07 PM org.springframework.core.io.support.PropertiesLoaderSupport loadProperties
INFO: Loading properties file from class path resource [mysql.properties]
Mar 5, 2009 3:32:07 PM org.springframework.core.io.support.PropertiesLoaderSupport loadProperties
INFO: Loading properties file from class path resource [system.properties]
Mar 5, 2009 3:32:08 PM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1f06dc3: defining beans [propertyConfigurer,dataSourc
eMYSQL,dataSourceDB2,transactionManager,jdbcTemplate,jobRepository,simpleStep,mapJobRepository,xmlByteProcessJob,tradeStaxWriter,tradeMarshallingSerializer,alia
ses,customEditorConfigurer,logAdvice,eventAdvice]; root of factory hierarchy 
Mar 5, 2009 3:32:08 PM org.springframework.batch.core.launch.support.CommandLine
JobRunner start
SEVERE: Job Terminated in error:
java.lang.NullPointerException
        at org.springframework.batch.core.launch.support.CommandLineJobRunner.start(CommandLineJobRunner.java:205)
        at org.springframework.batch.core.launch.support.CommandLineJobRunner.main(CommandLineJobRunner.java:252)
Mar 5, 2009 3:32:09 PM org.springframework.context.support.AbstractApplicationContext doClose
INFO: Closing org.springframework.context.support.ClassPathXmlApplicationContext@e5b723: display name [org.springframework.context.support.ClassPathXmlApplicati
onContext@e5b723]; startup date [Thu Mar 05 15:32:06 CST 2009]; root of contexthierarchy
Mar 5, 2009 3:32:09 PM org.springframework.beans.factory.support.DefaultSingletonBeanRegistry destroySingletons
INFO: Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1f06dc3: defining beans [propertyConfigurer,dataSourceMYSQL,
dataSourceDB2,transactionManager,jdbcTemplate,jobRepository,simpleStep,mapJobRepository,xmlByteProcessJob,tradeStaxWriter,tradeMarshallingSerializer,aliases,cus
tomEditorConfigurer,logAdvice,eventAdvice]; root of factory hierarchy

Thanks a lot for your help

[Dave Syer]

Looks like there's no JobLauncher in your application context.

[adish1234]

Looks like there's no JobLauncher in your application context.

Hi Dave,
Thanks a lot . I mistakely missed the JobLauncher. Thanks again.

can you please tell me if i want to update the element value into a table using ItemWriter then what i need to do???

I really thanks to you for your help...