Java Network programming ____ The simplest reptile (crawl the website beauty picture) __ Programming

Package com.company.reptile;
Import Java.io.BufferedReader;
Import Java.io.DataInputStream;
Import Java.io.File;
Import Java.io.FileOutputStream;
Import java.io.IOException;
Import Java.io.InputStreamReader;
Import Java.net.URL;
Import java.net.URLConnection;
Import java.util.ArrayList;
Import java.util.List;
Import Java.util.regex.Matcher;


Import Java.util.regex.Pattern; /*** * @author God * @see java Crawl site beauty images * @info A simple reptile does not involve breadth first and depth priority just as understanding/public class Javareptileutil {//
	Address private static final String Web_site = "http://www.4493.com"; Get the IMG tag regular private static final String Image_tag_reg = "]*?> "; Get the regular private static final String Image_src_reg = "http:\" for the SRC path? (.*?)
	(\ "|>|\\s+"); /** * Test Small crawler * @param args * @throws Exception/public static void main (string[] args) throws Exception {//
		1. Get Beauty Pictures official address String Htmlinfo = Gethtmlinfo (web_site);
Get Picture URL link address list<string> imagesrc = GETIMAGESRC (Htmlinfo);		Download Beauty pictures downloadimage (IMAGESRC); /** * Parse HTML page * @param host * @return * @throws Exception/public static string Gethtmlinfo (String host)
		Throws exception{URL url=new url (host);
		URLConnection urlconnection = Url.openconnection ();
		BufferedReader BufferedReader = new BufferedReader (New InputStreamReader (Urlconnection.getinputstream ()));
		String Buffer=null;
		StringBuffer sbf=new StringBuffer ();
		while ((Buffer=bufferedreader.readline ())!=null) {sbf.append (buffer);
	return sbf.tostring (); /** * resolves all the SRC attributes of the image label * @param args * @throws Exception/public static list<string> GETIMAGESRC (
		String htmlinfo) {Matcher matcher_image = Pattern.compile (Image_tag_reg). Matcher (Htmlinfo);
		list<string> imagesrc = new arraylist<string> ();
			while (Matcher_image.find ()) {Matcher matcher_src = Pattern.compile (Image_src_reg). Matcher (Matcher_image.group ()); while (Matcher_src.find ()) {Imagesrc.add (Matcher_src.grouP (). substring (0, Matcher_src.group (). Length ()-1));
	} return IMAGESRC; /** * Download Crawl URL link * @param imagesrc * @throws Exception/public static void Downloadimage (LIST&LT;STRING&G T
			IMAGESRC) throws IOException {for (String src:imagesrc) {URL URL =null;
			try {url = new URL (src);
			catch (IOException e) {continue;
			}//Next in resource datainputstream DataInputStream = new DataInputStream (Url.openstream ());
			FileOutputStream FileOutputStream = new FileOutputStream (New File ("f:\\beauty\\" + netutil.getstrname (src));
			byte[] bytes = new byte[1024];
			int length = 0;
				while (length = datainputstream.read (bytes))!=-1) {fileoutputstream.write (bytes, 0, length);
			System.out.println ("Download ...");
			} System.out.println ("Download complete ...");
			Datainputstream.close ();
		Fileoutputstream.close ();
 }
	}
    
}

//

Package com.company.reptile;

public class Netutil {
	
    /**
     * Get URL link picture name
     * @param URL
     * @return/public
    static String Getstrname (String url) {  
        string[] Sarry = Url.split ("/");  
        return sarry[sarry.length-1];  
    }  

Run results

Image