Downloader is the part that downloads web pages and store in Page object. Downloader has {@link #setThread(int)} method because downloader is always the bottleneck of a crawler,there are always some mechanisms such as pooling in downloader, and pool size is related to thread numbers.
@author code4crafter@gmail.com
@since 0.1.0
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.