RestTemplate gives a larger amount of functions. It has six primary HTTP functions, which makes it simple to conjure numerous RESTful services and authorize REST best practices. RestTemplate's strategy name pursues a naming tradition; the initial segment demonstrates what the HTTP strategy is and the second part shows what will be returned. There is an interface called ResponseErrorHandler in  RestTemplate which is used to determine whether a particular response has an error or not. Here are the descriptions of the six HTTP functions.