lixml2 C xpath失败并显示“invalid expression”

Question

I use libxml2 in C application to parse XML files.

I get an error when I search for XPath with special character '$'.

Here my code :

xmlXPathExpression("//mytag/foo$");

And I get error "Invalid expression".

I tried to encode speical characters like this :

xmlXPathExpression("//mytag/foo$");

But I get same error.

Any help ? Thanks.

Answer 1

我没有看到$列为元素名称中的有效字符： XML 1.0 。