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POHow to use XStream in Mule?
 

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  1. POHow to use XStream in Mule?
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    <p>I have written three classes implementing XStream. It marshalls/unmarshalls the following XML.</p> <pre><code>&lt;Message calledProgram="XXX" programName="YYY"&gt; &lt;Fields&gt; &lt;Field name="SupplierName" value="ABC"/&gt; &lt;Field name="SupplierNo" value="123456"/&gt; &lt;Field name="SupplierCountry" value="AA"/&gt; &lt;Field name="TermsOfDelivery" value="5"/&gt; &lt;Field name="PaymentTerms" value="90"/&gt; &lt;Field name="Currency" value="GBP"/&gt; &lt;/Fields&gt; &lt;/Message&gt; </code></pre> <p>How do I use these classes in Mule? It is one Class that uses the other two so it is just one class to use.</p> <p>I will be receiving an XML like above. I want to transform it to an Object.</p> <p>It works in plain Java, but how do I use it in a flow. Getting all possible Exceptions from Mule.</p> <pre><code>Exception in thread "main" org.mule.module.launcher.DeploymentInitException: InstantiationException: xxx.com.GenericClass at org.mule.module.launcher.application.DefaultMuleApplication.init(DefaultMuleApplication.java:220) at org.mule.module.launcher.application.ApplicationWrapper.init(ApplicationWrapper.java:64) at org.mule.module.launcher.DefaultMuleDeployer.deploy(DefaultMuleDeployer.java:46) at org.mule.tooling.server.application.ApplicationDeployer.run(ApplicationDeployer.java:56) at org.mule.tooling.server.application.ApplicationDeployer.main(ApplicationDeployer.java:88) Caused by: org.mule.api.config.ConfigurationException: Error creating bean with name 'MyB24Flow1': Invocation of init method failed; nested exception is org.mule.api.lifecycle.InitialisationException: Unable to initialize XStream (org.mule.api.lifecycle.InitialisationException) (org.mule.api.config.ConfigurationException) at org.mule.config.builders.AbstractConfigurationBuilder.configure(AbstractConfigurationBuilder.java:52) at org.mule.config.builders.AbstractResourceConfigurationBuilder.configure(AbstractResourceConfigurationBuilder.java:78) at org.mule.context.DefaultMuleContextFactory.createMuleContext(DefaultMuleContextFactory.java:80) at org.mule.module.launcher.application.DefaultMuleApplication.init(DefaultMuleApplication.java:208) ... 4 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'MyB24Flow1': Invocation of init method failed; nested exception is org.mule.api.lifecycle.InitialisationException: Unable to initialize XStream at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) at org.mule.config.spring.SpringRegistry.doInitialise(SpringRegistry.java:89) at org.mule.registry.AbstractRegistry.initialise(AbstractRegistry.java:109) ... 14 more Caused by: org.mule.api.lifecycle.InitialisationException: Unable to initialize XStream at org.mule.module.xml.transformer.AbstractXStreamTransformer.initialise(AbstractXStreamTransformer.java:52) at org.mule.processor.chain.AbstractMessageProcessorChain.initialise(AbstractMessageProcessorChain.java:79) at org.mule.construct.AbstractFlowConstruct.initialiseIfInitialisable(AbstractFlowConstruct.java:309) at org.mule.construct.AbstractPipeline.doInitialise(AbstractPipeline.java:161) at org.mule.construct.AbstractFlowConstruct$1.onTransition(AbstractFlowConstruct.java:111) at org.mule.construct.AbstractFlowConstruct$1.onTransition(AbstractFlowConstruct.java:105) at org.mule.lifecycle.AbstractLifecycleManager.invokePhase(AbstractLifecycleManager.java:141) at org.mule.construct.FlowConstructLifecycleManager.fireInitialisePhase(FlowConstructLifecycleManager.java:81) at org.mule.construct.AbstractFlowConstruct.initialise(AbstractFlowConstruct.java:104) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1581) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1522) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452) ... 25 more </code></pre> <p><strong>Update:</strong></p> <p>Though this is not my real code. But how do you mean OOTB? This doesn't work either. Have tried without the File-2-String as well.</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;mule xmlns:file="http://www.mulesoft.org/schema/mule/file" xmlns:mulexml="http://www.mulesoft.org/schema/mule/xml" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation" xmlns:spring="http://www.springframework.org/schema/beans" version="CE-3.3.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.mulesoft.org/schema/mule/xml http://www.mulesoft.org/schema/mule/xml/current/mule-xml.xsd http://www.mulesoft.org/schema/mule/file http://www.mulesoft.org/schema/mule/file/current/mule-file.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd "&gt; &lt;flow name="MyXStreamFlow1" doc:name="MyXStreamFlow1"&gt; &lt;file:inbound-endpoint path="E:\JavaDev\Test" responseTimeout="10000" doc:name="File"/&gt; &lt;logger level="INFO" doc:name="Logger"/&gt; &lt;file:file-to-string-transformer doc:name="File to String"/&gt; &lt;logger message="WTF" level="INFO" doc:name="Logger"/&gt; &lt;mulexml:xml-to-object-transformer doc:name="XML to Object"/&gt; &lt;logger level="INFO" doc:name="Logger"/&gt; &lt;mulexml:object-to-xml-transformer doc:name="Object to XML"/&gt; &lt;logger level="INFO" doc:name="Logger"/&gt; &lt;/flow&gt; </code></pre> <p></p> <p>Here's my main Java Class.</p> <pre><code>package test; import java.io.FileInputStream; import java.io.FileNotFoundException; import com.thoughtworks.xstream.XStream; import com.thoughtworks.xstream.annotations.XStreamAlias; import com.thoughtworks.xstream.annotations.XStreamAsAttribute; import com.thoughtworks.xstream.io.xml.DomDriver; @XStreamAlias("Message") public class GenericClass { @XStreamAlias("calledProgram") @XStreamAsAttribute private String calledProgram; @XStreamAlias("programName") @XStreamAsAttribute private String programName; @XStreamAlias("Fields") private Fields flds = new Fields( new Field("nameValue1", "valueValue1"), new Field("nameValue2", "valueValue2"), new Field("nameValue3", "valueValue2")); private static XStream xstream; public GenericClass() { new GenericClass("calledProgram", "programName"); } public GenericClass(String calledProgram, String programName) { xstream = new XStream(new DomDriver()); xstream.processAnnotations(GenericClass.class); this.calledProgram = calledProgram; this.programName = programName; } public static void main(String[] args) { GenericClass msg = new GenericClass(); // Unmarshall FileInputStream file = null; try { file = new FileInputStream( "E:\\JavaDev\\JRecordFiles\\Samples\\LevisTest.xml"); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } msg = (GenericClass) xstream.fromXML(file); System.out.println("&lt;?xml version=\"1.0\" encoding=\"utf-8\"?&gt;\n" + xstream.toXML(msg)); } } </code></pre> <p>-</p> <pre><code>package test; import com.thoughtworks.xstream.annotations.XStreamAsAttribute; public class Field { private String field; @XStreamAsAttribute private String name; @XStreamAsAttribute private String value; /** * @param field */ public Field(String name, String value) { this.name = name; this.value = value; } /** * @return the field */ public String getField() { return field; } /** * @param field * the field to set */ public void setField(String field) { this.field = field; } /** * @return the name */ public String getName() { return name; } /** * @param name * the name to set */ public void setName(String name) { this.name = name; } /** * @return the value */ public String getValue() { return value; } /** * @param value * the value to set */ public void setValue(String value) { this.value = value; } } </code></pre> <p>-</p> <pre><code>package test; import java.util.Arrays; import java.util.List; import com.thoughtworks.xstream.annotations.XStreamImplicit; public class Fields { @XStreamImplicit(itemFieldName = "Field") private List&lt;Field&gt; fields; public Fields(Field... field) { this.fields = Arrays.asList(field); } /** * @return the fields */ public List&lt;Field&gt; getFields() { return fields; } /** * @param fields * the fields to set */ public void setFields(List&lt;Field&gt; fields) { this.fields = fields; } } </code></pre> <p>How do I use XStream in Mule?</p>
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    1. COAre you deploying these classes with your Mule application?
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    2. COHi David, I am trying to use my Class(es) in a Mule flow. But I don't know how to "use" them. I am a newbie. I am receiving an XML through JMS which I want to Tranform to an Object with XStream. BTW, just bought the MEAP for Mule in Action 2nd edition.
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    3. COAre your classes on the classpath of the Mule project?
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