Getting Ambiguous constructor argument types

[Tony Evans]

Trying to inject a long value into a bean

	<bean id="timeOut" class="java.lang.Long">
		<constructor-arg type="java.lang.Long">
		<value>500000</value>
		</constructor-arg>
	</bean>

 
    public void setTimeOut(Long timeOut) {
        this.timeOut = timeOut;
    }

elated cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'timeOut' defined in class path resource [ce-priceavailability-wrapper.xml]: Unsatisfied dependency expressed through constructor argument with index 0 of type [long]: Ambiguous constructor argument types - did you specify the correct bean references as constructor arguments?
	at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:336)
	at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1456)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1197)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
	at org.adroitlogic.ultraesb.core.deployment.DeploymentUnitBuilder.fromSpringConfig(DeploymentUnitBuilder.java:177)
	... 23 more
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'timeOut' defined in class path resource [ce-priceavailability-wrapper.xml]: Unsatisfied dependency expressed through constructor argument with index 0 of type [java.lang.String]: Ambiguous constructor argument types - did you specify the correct bean references as constructor arguments?
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:733)
	at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:185)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1114)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1017)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
	at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328)
	... 36 more

[Jayesh A Lalwani]

Tony,

You are doing constructor injection, which means Spring will try to invoke a constructor with a paremter that can be cast from a Long. It will not call the setMethod that you have shown here.

You might want to look at the constructors on your class.

[Tony Evans]

Sorry should have been a little clearer I go it working

What I wanted for a bean timeOut outside the main bean which was set by a setter.

This si the code that works

	<bean id="timeOut" class="java.lang.String">
		<constructor-arg type="java.lang.String" value="5000000" />
	</bean>

inside the main bean

<property name="timeOut">
			<ref bean="timeOut" />
		</property>

So in Java code I have

 public void setTimeOut(String timeOut) {
        this.timeOut = timeOut;
    }

Then i parse it to a string it seems that spring has no problem with

 = new String("500000")

But does with

 = new Long(500000)

Hope this helps someone else

[Tony Evans]

Sorry I mean parse it to a Long

[Jayesh A Lalwani]

This seems like a hard way to do things. Why don't you just do

public void setTimeOut(long timeOut) {
       this.timeOut = timeOut;
   }

<property name="timeOut" value="5000000"/>