不，它不会像这样工作，它将按照请求Map工作，如get post可选更新等
但是你可以像这样调整和完成你的工作

//Post method #1
@RequestMapping(method=RequestMethod.POST, value="/foo", headers="returnType=withoutcertainformat")
public @ResponseBody Foo updateFoo(@RequestBody Foo foo) {
    fooService.update(foo);
}

//Post method #2
@RequestMapping(method=RequestMethod.POST, value="/foo", headers="returnType=withcertainformat")
public @ResponseBody FooExtra updateFoo(@RequestBody FooExtra fooExtra) {
    fooService.update(fooExtra);
}