弹簧控制器中的正则表达式 [英] Regex in spring controller

问题描述

我正在尝试构建一个请求过滤器，只有在匹配字母e的模式，然后是数字时才会使用。但是我似乎无法让它发挥作用。每次尝试使用正则表达式时，我都会遇到400错误。

I am trying to build a request filter that will only get used if it matches a pattern of the letter e, then a number. However I cannot seem to get it to work. I keep getting 400 errors every time I try something with regex.

如果我只是使用以下内容它有效，但也可以捕获没有数字的映射。不想要。

If I just use the following it "works" but also captures mappings that do not have numbers which I don't want.

@RequestMapping(value = "e{number}",
            method = RequestMethod.GET)

我尝试了以下组合。

@RequestMapping(value = "e{number}",
            params = "number:\\d+",
            method = RequestMethod.GET)

@RequestMapping(value = "e{number:\d+}",
            method = RequestMethod.GET)

@RequestMapping(value = "/e{^\\+?\\d+\$}",
            method = RequestMethod.GET)

@RequestMapping(value = "/{^\\e+?\\d+\$}",
            method = RequestMethod.GET)

推荐答案

根据文档，你必须使用像 {var这样的东西名称：正则表达式} 。还有一个例子：

According to the documentation, you have to use something like {varName:regex}. There's even an example :

@RequestMapping("/spring-web/{symbolicName:[a-z-]+}-{version:\\d\\.\\d\\.\\d}{extension:\\.[a-z]+}")
  public void handle(@PathVariable String version, @PathVariable String extension) {
    // ...
  }
}

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