Spring MVC检测到Ajax请求 [英] Spring MVC detect ajax request

问题描述

如何以最佳方式检测ajax请求?

How to detect an ajax request in the best possible way?

我当前在控制器中使用它:

I'm currently using this in my controller:

private boolean isAjax(HttpServletRequest request){
    String header = request.getHeader("x-requested-with");
    if(header != null && header.equals("XMLHttpRequest"))
        return true;
    else
        return false;
}

但是我不喜欢这种方式，我认为Spring应该有更好的解决方案.

But I don't like this way, I think there should have a better solution with Spring.

推荐答案

这是检测Ajax请求的唯一通用"方法.

That is the only "generic" way to detect an Ajax request.

但是请记住:这不是故障预防，这只是尽力而为的尝试，可以在不发送 X-Requested-With <的情况下发出Ajax请求/code>标头.

But keep in mind: that's not failproof, it is just a best effort attempt, it is possible to make an Ajax request without sending the X-Requested-With headers.

jQuery通常包含该标头.也许另一个库没有.该协议当然不认为该标头是必需的.

jQuery usually includes that header. Maybe another lib doesn't. The protocol certainly doesn't consider that header mandatory.

请注意:您的代码是完全有效的，尽管您可以编写得更简单:

Just a note: Your code is perfectly valid, though you could write it a bit simpler:

private boolean isAjax(HttpServletRequest request) {
    String requestedWithHeader = request.getHeader("X-Requested-With");
    return "XMLHttpRequest".equals(requestedWithHeader);
}

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