📄 webpage.java

📁 java编程开发技巧与实例的编译测试通过的所有例程

💻 JAVA

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import java.io.*;
import java.net.*;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.StringTokenizer;

public class WebPage
{
	private LinkedList tokens	=	new LinkedList();
	public WebPage(String host, int port, String file)
	{
		tokenizer(loader(host, port, file));
	}
	public String getContent()
	{
		String content	=	new String("");
		for (Iterator iterator = tokens.iterator(); iterator.hasNext();)
			content += iterator.next().toString();
		return content;
	}
	private void tokenizer(String content)
	{
		StringTokenizer tags	=	new StringTokenizer(content, "<");
		while	(tags.hasMoreTokens())
		{
			StringTokenizer split	=	new StringTokenizer(tags.nextToken(),">");
			if (split.hasMoreTokens())
				tokens.addLast(new HTMLTag(split.nextToken()));
			if (split.hasMoreTokens())
				tokens.addLast(new HTMLText(split.nextToken()));
		}
	}
	private String loader(String host, int port, String file)
	{
		String content	=	new String(""), line = new String("");
		try
		{
			Socket client	=	new Socket(host, port);
			PrintWriter out	=	new PrintWriter(new OutputStreamWriter(client.getOutputStream()));
			BufferedReader in	=	new BufferedReader(new InputStreamReader(client.getInputStream()));
			out.println("GET" + file + " HTTP/1.0");
			out.println("");
			out.flush();
			while ((line = in.readLine()) != null)
				content += line;
			in.close();
			out.close();
			client.close();
		}
		catch	(UnknownHostException uhe)
		{
			content = "<HTML>No content: host " + host + "unknown</HTML>";
		}
		catch	(IOException ioe)
		{
			content = "<HTML>No content: host " + host + "refused</HTML>";
		}
		return content;
	}
}

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