Spring @RequestMapping 处理特殊字符

问题描述：

我有一个这样的 REST API:

I have a REST API like this:

  @RequestMapping(value = "/services/produce/{_id}", method = RequestMethod.PATCH, 
  consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
  public String patchObject(@RequestBody PatchObjectRequest obj, 
      @PathVariable("_id") String id) {
  // some code
  }

我的问题是可能给出的 id 格式如下:

My problem is that the id that might be given is in the form:

US%2FCA%2FSF%2FPlastic

这是US/CA/SF/Plastic"的URL编码.

Which is a URL encoding of "US/CA/SF/Plastic".

我的问题是，当将 % 字符放入 URL 时，@RequestMapping 不会将其映射到此方法，它将返回 404.有没有办法接受其中包含 % 字符的 ID 作为网址?

My problem is that when a % character is put into the URL the @RequestMapping does not map it to this method and it will return a 404. Is there a way to accept ids that have % character in them as part of the URL?

答

您收到此错误是因为将它用作路径变量，它被解码，然后服务器尝试将其与不存在的路径匹配.几年前发布的类似问题:如何匹配一个 Spring @RequestMapping 有一个包含/"的@pathVariable?，urlencoded 正斜杠正在破坏 URL.

You are receiving this error because using it as path variable it is decoded and then server tries to match it to a path that doesn't exits. Similar questions where posted a few years ago: How to match a Spring @RequestMapping having a @pathVariable containing "/"?, urlencoded Forward slash is breaking URL.

一个不错的选择是将 _id 从 @PathVariable 更改为 @RequestParam 并解决问题，并将其从路径中删除.

A good option for you would be to change _id from @PathVariable to @RequestParam and problem solved, and remove it from path.

Spring @RequestMapping 处理特殊字符

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