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In mule there are many ways to invoke a Java component.
1. Entry point resolver
2. Implemnt mule Life Cycle API i.e callable
3. Invoke component.
when ever Mule finds Java component as message processors in a flow, tries to execute above three methods .
In the java component if you have created any methods with param same as mule message payload , Entry Point resolver is used.
eg : class XYZ{
method1(String s1){
}
method2(List<String> S2){
}
}
If Mule Message Payload has type String then method1 is invoked, if message payload has List of String , method2 is invoked during run time.
2. If you can invoke the Java component in the flow irrespective of type of the payload, should implement Callable interface which overrides onCall() method.
for eg : class XYS implements Callable{
@override
onCall(MuleEventConext muleEventConext){
}
using MuleEvent Conext you can extract the payload and process it.
3. Using Invoke component, you can create the object of the Class and invoke explicitly the method with appropriate Parameters passed.
任何帮助将不胜感激