Error in spring program

[jalpesh_007]

i am new to spring framework.
i have learned basic concept of Spring.Now i am trying to simply run one hello world application using spring.

i am getting following error.i dont know why?
i am using netbeans 7.2 and spring framework 3.1.1 Release.

hello.java

public class hello {

    private String msg = "Hello World";

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public String getMsg() {
        return msg;
    }
    public void printMsg(){
        System.out.print(msg);
    }

}

Main.java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Main {
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        hello helloworld = (hello) context.getBean("helloworld");
        helloworld.printMsg();
    }
}

beans.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"
       xmlns:context="http://www.springframework.org/schema/context/spring-context-2.5.xsd"
       xmlns:flow="http://www.springframework.org/schema/webflow-config/spring-webflow-config-1.0.xsd"

       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
          http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/aop/spring-aop-2.5.xsd/spring-spring-aop-2.5.xsd-3.1.1.RELEASE.xsd
          http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/context/spring-context-2.5.xsd/spring-spring-context-2.5.xsd-3.1.1.RELEASE.xsd
          http://www.springframework.org/schema/webflow-config/spring-webflow-config-1.0.xsd http://www.springframework.org/schema/webflow-config/spring-webflow-config-1.0.xsd/spring-spring-webflow-config-1.0.xsd-3.1.1.RELEASE.xsd
">

    <bean id="1" name="hi" class="hello"/>
</beans>

and error is following

run:
Apr 10, 2013 10:47:05 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@1bf6770: startup date [Wed Apr 10 10:47:05 IST 2013]; root of context hierarchy
Apr 10, 2013 10:47:05 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [beans.xml]
Exception in thread "main" org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 14 in XML document from class path resource [beans.xml] is invalid; nested exception is org.xml.sax.SAXParseException: cvc-datatype-valid.1.2.1: '1' is not a valid value for 'NCName'.
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:396)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
    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:522)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:436)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
    at Main.main(Main.java:19)
Caused by: org.xml.sax.SAXParseException: cvc-datatype-valid.1.2.1: '1' is not a valid value for 'NCName'.
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(XMLSchemaValidator.java:410)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(XMLSchemaValidator.java:3165)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processOneAttribute(XMLSchemaValidator.java:2748)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processAttributes(XMLSchemaValidator.java:2685)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:2037)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:705)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:377)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2747)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:225)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:283)
    at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:75)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:388)
    ... 14 more
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)

please help me out to solve this error.

[~s.o.s~]

I no longer program in Spring but IIRC, id names in Spring follow the Java variable naming conventions and hence ids can't be just numbers (which is what the exception message is trying to convey here). Change id="1" to id="one" and see how it goes.

[jalpesh_007]

As i have changed my id from 1 to one error becomes less,but still there is following error.

Apr 10, 2013 11:09:11 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@b09e89: startup date [Wed Apr 10 11:09:11 IST 2013]; root of context hierarchy
Apr 10, 2013 11:09:11 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [beans.xml]
Apr 10, 2013 11:09:11 AM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@12d263f: defining beans [hello1]; root of factory hierarchy
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:529)
    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:1093)
    at Main.main(Main.java:20)
Java Result: 1

so how to solve this?

[~s.o.s~]

You need to think why a code is written before adding in code. When you write: hello helloworld = (hello) context.getBean("helloworld");, what are you expecting it to return back? How do you think Spring will get back the hello object for you?

Take a few minutes and read the error message carefully. The error basically means "the context XML file which you have loaded doesn't have a bean called 'helloworld'" which is correct. Now the question is how can we fix this error? You already have defined a bean in the XML file but it isn't named "helloworld". How do you think can we do away with this error? Can you think of a way of replacing or modifying the code such that your class Main works?

On a related note, always put your class in package and follow Java coding conventions. hello is not a good name for a class. Also put this and the Main class in some sort of a package like test.

[jalpesh_007]

yes i have put bean id as hello world.

[~s.o.s~]

Does it still fail; it shouldn't fail. What does your new XML look like?

[jalpesh_007]

Thanks ~S.O S~

my problem is fixed.

Thanks for your help.