Java 弹簧控制器中的正则表达式
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Regex in spring controller
提问by zmanc
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.
我正在尝试构建一个请求过滤器，只有当它匹配字母 e 和数字的模式时才会被使用。但是我似乎无法让它工作。每次尝试使用正则表达式时，我都会收到 400 个错误。
If I just use the following it "works" but also captures mappings that do not have numbers which I don't want.
如果我只使用以下它“有效”，但也会捕获没有我不想要的数字的映射。
@RequestMapping(value = "e{number}",
method = RequestMethod.GET)
I have tried the following combinations.
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)
采纳答案by sam
According to the documentation, you have to use something like {varName:regex}. There's even an example :
根据文档，您必须使用类似{varName:regex}. 甚至还有一个例子：
@RequestMapping("/spring-web/{symbolicName:[a-z-]+}-{version:\d\.\d\.\d}{extension:\.[a-z]+}")
public void handle(@PathVariable String version, @PathVariable String extension) {
// ...
}
}
回答by Koen van Dijk
You should use:
你应该使用：
@RequestMapping("/e{number:\d+})
Notice the "escaped slash" before the \ddigit specifier.
注意\d数字说明符之前的“转义斜线” 。
