[FIXED] Spring bean unable to resolve constructor for org.joda.time.DateTime

Issue

I am injecting constructor for org.joda.time.DateTime using spring as

<bean id="myDateTime" class="org.joda.time.DateTime">
    <constructor-arg type="java.lang.Long" value="${startDateTime:#{null}}" />
</bean>

The startDateTime is resolved as 1341571102000. But I'm getting error regarding unable to resolve constructor

Cannot resolve reference to bean 'myDateTime' while setting constructor argument; 
nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'myDateTime' defined in URL [file:/path/to/spring-configuration/application-config.xml]: Could not resolve matching constructor (hint: specify index/type/name arguments for simple parameters to avoid type ambiguities)

Solution

The org.joda.time.DateTime class does not have a constructor that accepts a java.lang.Long. You probably want to use the one that accepts a primitive long. To do that, try specifying type="long" for the constructor-arg.

However, the fallback to null in case startDateTime is not set will not work in that case. I'm not sure what your intention with that fallback is, but you need to solve it some other way if you are to use the long constructor.

Answered By - K Erlandsson
Answer Checked By - Senaida (JavaFixing Volunteer)