Question

Here my elisp code (test by url "http://httpbin.org/html")

   (with-current-buffer (url-retrieve-synchronously my-url)
    (goto-char (point-min))
    (re-search-forward "^$")
    (delete-region (point) (point-min))
    (setq dom (libxml-parse-html-region (point-min) (point-max)))
    (hoge--log-trace "Current buffer content: %s" (buffer-string))
    (hoge--log-trace "DOM is: %s" dom)
    )

To parse html I use elisp function "libxml-parse-html-region"

The result is:

Current buffer content: 
<!DOCTYPE html>
<html>
  <head>
  </head>
  <body>
      <h1>Herman Melville - Moby-Dick</h1>

      <div>
        <p>
          Availing himself ...
        </p>
      </div>
  </body>
</html>
DOM is: nil

如您所见，缓冲区有内容，但elisp函数 libxml-parse-html-region 返回nill，因此DOM对象为NIL。为什么呢？

elisp libxml-parse-html-region返回NIL

0 个答案: