Rails抛出“REXML :: ParseException没有有效的根”例外 [英] Rails throws "REXML::ParseException does not have a valid root" exception

问题描述

我有一个JavaScript对象，并使用 Douglas Crockford's将其转换为JSON JSON实用程序。在发送后AJAX请求时，我得到：

I have a JavaScript object, and converted it into JSON using Douglas Crockford's JSON utility. While sending a post AJAX request, I get:

REXML :: ParseException没有有效的根

REXML::ParseException does not have a valid root

REXML::ParseException (The document "{\"name\":\"asda\",\"deadline\":\"May 24, 2011\"}" does not have a valid root):

我无法继续处理此错误。

I am not able to proceed with this error.

推荐答案

在发出AJAX请求时，你是可能发送错误的Content-Type标头。如果您使用标头 Content-Type：application / xml 发出请求，Rails将尝试将您的请求正文解析为XML，并且您将收到该错误消息。相反，您将要使用 application / json 或其他内容类型，以便Rails不会尝试解析它。如果你正在使用jQuery，这是 contentType 设置> $。ajax 。

When making your AJAX request, you're probably sending the wrong Content-Type header. If you make a request with the header Content-Type: application/xml, Rails will try to parse your request body as XML, and you'll get that error message. Instead, you'll want to use application/json or another content-type so that Rails won't try to parse it. If you're using jQuery, this is the contentType setting in $.ajax.

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