对实体“foo”的引用必须以';'结尾分隔符 [英] The reference to entity "foo" must end with the ';' delimiter

问题描述

我使用Google checkout沙盒生成的HTML代码，它在HTML页面中工作正常。当我在XHTML页面中放置相同的代码时，它会抛出下面的异常：

实体w的引用必须以' ;'delimiter

它引用URL中的请求参数 w 以下 src 属性：

 <输入类型=图片名称=Google Checkoutalt =通过Google快速结帐
 src =http://sandbox.google.com/checkout/buttons/checkout.gif?merchant_id=211512493599623&w=180&h=46& style = white& variant = text& loc = en_US
 height =46width =180/> 
  

这是如何引起的，我该如何解决它？

>是HTML和XML中的一个特殊字符。如果您想将其用作正常字符，则必须正确编码它。 编写& amp; 而不是& ：

  src =... 9623& amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; ; loc = en_US
  

& 表示编码实体的开始，例如< < 或的& lt; & amp; 为& 。在你的情况下，解析器试图将& w 解释为一个实体。但实体总是以; 结尾，因此如果缺少; ，则会显示错误消息。

I have Google checkout sandbox generated HTML code which works fine in HTML page. When I put the same code in XHTML page, it throws the below exception:

the reference to entity "w" must end with the ';' delimiter

It's referring the request parameter w in the URL in the below src attribute:

<input type="image" name="Google Checkout" alt="Fast checkout through Google"
    src="http://sandbox.google.com/checkout/buttons/checkout.gif?merchant_id=211512493599623&w=180&h=46&style=white&variant=text&loc=en_US"
    height="46" width="180" />

How is this caused and how can I solve it?

解决方案

The ampersand & is a special character in HTML and XML. If you want to use it as a normal character, you have to encode it correctly. Write & instead of &:

src="...9623&w=180&h=46&style=white&variant=text&loc=en_US"

& denotes the start of an encoded entity, such as < for <, or & for &. In your case the parser tries to interpret &w as an entity. But entities are always terminated by an ;, thus if the ; is missing you get the error message.

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