Android 正则表达式编码
我正在使用 HttpClient 下载网站的源代码，然后我想使用正则表达式提取一些数据。不幸的是，该网站采用 iso-8859-1 编码，这似乎会导致问题。下面是下载网站的示例代码：
HttpGet query = new HttpGet(url);
HttpResponse queryResponse = httpClient.execute(query);
String queryText = EntityUtils.toString(queryResponse.getEntity()).replaceAll("\r", " ").replaceAll("\n", " ");
然后是表达式：
Pattern patter = Pattern.compile("<p class=\"qt\">(.*?)</p>");
Matcher matcher = pattern.matcher(queryText);
while (matcher.find()) // do something
问题在于，当存在特殊的 iso-8859-1 字符时，它会丢失一些事件。 (.*?) 似乎与它们不匹配。这个问题的原因是什么？我该如何修复它？
I'm downloading website's source code using HttpClient and then I want to extract some data using regular expressions. Unfortunetely the website is encoded in iso-8859-1 which seems to be causing problems. Here's the sample code to download website:
HttpGet query = new HttpGet(url);
HttpResponse queryResponse = httpClient.execute(query);
String queryText = EntityUtils.toString(queryResponse.getEntity()).replaceAll("\r", " ").replaceAll("\n", " ");
And then the expression:
Pattern patter = Pattern.compile("<p class=\"qt\">(.*?)</p>");
Matcher matcher = pattern.matcher(queryText);
while (matcher.find()) // do something
The problem is that it's missing some occurences, when there are special iso-8859-1 characters. (.*?) doesn't seem to match them. What's the reason of this problem? How do I fix it?
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您确定这与“特殊 iso-8859-1 字符”而不是换行符有关吗？
.默认情况下不匹配行终止符。您可以使用 DOTALL 标志也可以启用行终止符的匹配。例如：Are you sure this has to do with "special iso-8859-1 characters" and not newlines?
.does not match line terminators by default. You can use the DOTALL flag to enable matching of line terminators as well. eg: