利用c#语言做网络爬虫。感觉一头雾水,求高手指点,感激不尽!
HttpWebRequestreq=(HttpWebRequest)WebRequest.Create(url);RequestStaters=stateasReques...
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
RequestState rs = state as RequestState;这两句怎样理解 展开
RequestState rs = state as RequestState;这两句怎样理解 展开
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