为 servlet 映射指定否定路径匹配 [英] Specify negative path match for servlet mapping

问题描述

有没有办法在 web.xml 中指定负映射?例如，我想为所有请求设置一个过滤器，除了那些匹配 '/public/*' 的请求.

Is there a way to specify negative mappings in web.xml? For example, I want to set a filter for ALL requests EXCEPT those matching '/public/*'.

推荐答案

不，这不可能.您必须在 doFilter() 方法中匹配自己的 URL 模式.将过滤器映射到 /* 并执行以下工作:

No, that's not possible. You'd have to do the URL pattern matching yourself inside the doFilter() method. Map the filter on /* and do the following job:

HttpServletRequest req = (HttpServletRequest) request;

if (req.getRequestURI().startsWith("/public/")) {
    chain.doFilter(request, response);
    return;
}

// ...

或者当实际存在上下文路径时:

or when there's actually a context path:

HttpServletRequest req = (HttpServletRequest) request;

if (req.getRequestURI().startsWith(req.getContextPath() + "/public/")) {
    chain.doFilter(request, response);
    return;
}

// ...

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