InputStream【输入的内容是URL】

package com.wyq.file;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;

public class TestNet {
	public static void main(String[] args) throws IOException {
		//[1]搭建橋梁
		// InputStream is = new FileInputStream("d/a.txt");
		// InputStream is = System.in;
		URL u = new URL("http://www.baidu.com");
		InputStream is = u.openStream();
		//【2】读取数据
//		int temp = 0;
//		while ((temp = is.read()) != -1) {
//			System.out.print((char) temp);
//		}
		//读取到byte数组中
		byte buf [] = new byte[1024];
		int length =0;//用于存储读取到的内容
		while((length=is.read(buf))!=-1){
			System.out.println(new String(buf,0,length));
		}
		
		//【3】关闭资源
		is.close();
	}
}