Android的 - Matcher.find（）无限 [英] Android - Matcher.find() infinite

问题描述

我已经实现的AsyncTask，其中由用户提供的常规前pression被用于匹配巨大HTML- code数据。但是，由于一些正规的前pressions含有大量的量词/回溯，Matcher.find（）变为无限。

I have implemented AsyncTask where the regular expression provided by the user is being used for matching huge html-code data. However, because some of the regular expressions contain a lot of quantifiers/backtracking, Matcher.find() goes infinite.

我曾尝试使用 InterruptibleCharSequence 这里提供：<一href=\"http://stackoverflow.com/questions/7125732/how-to-terminate-matcher-find-when-its-running-too-long\">How终止Matcher.find（），当其运行时间太长？，但似乎的的charAt 的是永远不会被调用，所以从未中断。最后，我的猜测是刚刚创建一个新的进程来运行这个规律的匹配过程，然后杀了它在搜索时会被取消。不过，后来我有一个问题，共享服务和活动的对象，因为不同的流程。

I have tried to use InterruptibleCharSequence provided here: How to terminate Matcher.find(), when its running too long?, but it seems that charAt is never get called, so never interrupted. My last guess is to create a new process just to run this regular matching procedure and then kill it when searching is cancelled. However, then I have a problem with sharing objects between Service and Activity, because of different processes.

推荐答案

使用RegEx解析HTML是一个坏主意，请参见：的解析HTML邪神之路

Parsing HTML using RegEx is a bad idea, see: Parsing Html The Cthulhu Way

有关解析DOM，而不是么？我试着 jsoup 前一段时间，发现它pretty整齐的工作。

What about parsing the DOM instead? I tried jsoup a while ago and found it pretty neat to work with.

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