使用JAXB将XML子内部节点从XML拉到Java对象

I have been trying to pull a child node from an XML which I received from a SOAP as string. I can retrieve the parent node but couldn't retrieve the child node. I also surf the internet to see if I can get an answer but all to no avail. I saw some examples with direct child pulling, but that didn't solve my problem.I have been trying to pull a child node from an