Issue facing in the spring code

[shwetha raghavachar]

Hi,


Help is required....

I am new to spring. Here am trying with sample example to learn spring but whenever i try to create/click on an xml file am getting error like these:

!ENTRY org.eclipse.ui 4 0 2012-10-12 14:06:56.481
!MESSAGE Unhandled event loop exception
!STACK 0
org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.NullPointerException)
at org.eclipse.swt.SWT.error(SWT.java:4282)
at org.eclipse.swt.SWT.error(SWT.java:4197)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:138)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
at org.eclipse.jface.window.Window.open(Window.java:801)
at org.eclipse.ui.internal.views.log.EventDetailsDialog.open(EventDetailsDialog.java:180)
at org.eclipse.ui.internal.views.log.EventDetailsDialogAction.run(EventDetailsDialogAction.java:98)
at org.eclipse.ui.internal.views.log.LogView$15.doubleClick(LogView.java:535)
at org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredViewer.java:845)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:843)
at org.eclipse.jface.viewers.AbstractTreeViewer.handleDoubleSelect(AbstractTreeViewer.java:1462)
at org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1246)
at org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:249)
at org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.java:246)
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:307)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
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.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
Caused by: java.lang.NullPointerException
at net.ibs.ijdt.multieditor.profile.FileEditorActivationListener.handleActivation(FileEditorActivationListener.java:52)
at net.ibs.ijdt.multieditor.profile.PartActivationListener$1.run(PartActivationListener.java:79)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
... 41 more


and when i execute the main class the following errors are coming: Please can anyone help me in this issue:

INFO: Loading XML bean definitions from class path resource [NewFile.xml]
Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [NewFile.xml]; nested exception is java.io.FileNotFoundException: class path resource [NewFile.xml] cannot be opened because it does not exist
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:341)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:243)
at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:127)
at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:93)
at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:131)
at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:535)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:449)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at com.test.HelloClass.main(HelloClass.java:18)
Caused by: java.io.FileNotFoundException: class path resource [NewFile.xml] cannot be opened because it does not exist
at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:157)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:328)
... 13 more

package com.test;

import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.core.io.ClassPathResource;

public class HelloClass {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
/*XmlBeanFactory beanFactory=new XmlBeanFactory(new ClassPathResource("NewFile.xml"));
HelloWorld myBean=(HelloWorld) beanFactory.getBean("Spring3HelloWorldBean");*/
ApplicationContext context =
new ClassPathXmlApplicationContext("NewFile.xml");

HelloWorld obj = (HelloWorld) context.getBean("helloWorld");

obj.sayHello();

}

}

package com.test;

public class HelloWorld {
public void sayHello(){
System.out.println("Hello Spring 3.0");
}

}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean class="com.test.HelloWorld" id="Spring3HelloWorldBean"/>
</beans>

[Bill Gorder]

In the future please UseCodeTags when posting code or configuration. When it is hard to read you are less likely to get a response.

The first error looks like something is wrong with your Eclipse. I can't help you there but I suggest you download and use STS for your spring development. You can get that here:
http://www.springsource.org/sts

The second error is due to the Spring context file not being found see this part of the stack trace

Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [NewFile.xml]; nested exception is java.io.FileNotFoundException: class path resource [NewFile.xml] cannot be opened because it does not exist

You have apparently named it NewFile.xml and that file is not on the classpath.

[shwetha raghavachar]

Hi,

Thanks for your suggestion.

The NewFile.xml file is created in this path

D:\EclipseWorkspace\SpringProject\src

. Can you please give me some more inputs so that i can understand and proceed.

The issues now am facing are ::

Exception in thread "main" org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'HelloWorld' is defined
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:549)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1095)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:277)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1106)
at com.test.HelloClass.main(HelloClass.java:20)

Previously

HelloWorld obj = (HelloWorld) context.getBean("helloWorld");

changed to getBean("HelloWorld") as i thought its for casesensitive. But still the issue is what?? i want to know.

Regards,
Shwetha

[Bill Gorder]

If you highlight your text before pressing the 'code' button it will correctly wrap your code and you wont have empty code boxes

Looking about you defined your bean like this

<bean class="com.test.HelloWorld" id="Spring3HelloWorldBean"/> 

When you do this

HelloWorld obj = (HelloWorld) context.getBean("helloWorld"); 

you should be getting it by it id which in your case is Spring3HelloWorldBean. It is case sensitive.

[shwetha raghavachar]

Hi..

Thanks i got the the result finally...... thanks for your inputs..