在Spring中基于请求体将相同的URL映射到不同的方法 [英] Mapping the same url to different methods based on request body in spring

问题描述

我想知道是否可以将相同的URL映射到 RestController 类中的不同方法，仅基于请求正文。例如：

I want to know if it's possible to map the same URL to different methods in the RestController class, based only in the request body. For example:

@RequestMapping(value="/delete", method=RequestMethod.POST )
public void delete(@RequestBody String id) {
    //do something
}

@RequestMapping(value="/delete", method=RequestMethod.POST )
public void delete(@RequestBody Book book) {
    //do something
}

请求正文将始终是JSON有效负载。如果它是 {id：foo} 我想要调用第一个方法。如果请求正文是：

The request body will always be a JSON payload. if it's {"id":"foo"} I want the first method to be called. If the request body is:

{
    "title":"Spring Guide",
    "author":"John Doe"
}

我希望调用第二种方法。这可能吗？

I want the second method to be called. Is this possible?

推荐答案

无法仅通过有效负载进行区分。

There is no way to differentiate only by payload.

基于我在这里做的测试以及M. Deinum和Ali Dehghani的回答，我认为最好的方法是为每个案例设置不同的网址。所以要通过id删除 / books / {id} ，并使用对象的JSON删除 / books 正文删除传递对象。感谢所有评论。

Based on the tests I did here and M. Deinum and Ali Dehghani's response I think the best way to do this is to have different urls for each case. So a /books/{id} to delete by the id, and a /books with the object's JSON in the body to delete passing the object. Thanks for all that commented.

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