[javase]Java里面的java.net.url类介绍

原文地址

http://webservices.ctocio.com.cn/java/128/9331628.shtml

import java.io.BufferedInputStream;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.Reader;import java.net.URL;import java.net.URLConnection;public class NetUtils {/** * @param urls * @exception IOException * @see: 读一个URL的数据直到下一个字节为空。其中InputStream 类里面的read() 表示读取下一个字节的 */public void urlparse(String urls) throws IOException {URL url = new URL(urls);URLConnection uc = url.openConnection();InputStream in = uc.getInputStream();int c;while ((c = in.read()) != -1) {System.out.println(c);}in.close();}/** * @param URL * @see 读取URL所指定的网页内容 */public void urlparses(String urls) throws IOException {URL url = new URL(urls);Reader reader = new InputStreamReader(new BufferedInputStream(url.openStream()));int c;while ((c = reader.read()) != -1) {System.out.println((char) c);}reader.close();}/** * 抓取指定URL地址的网页内容值并返回内容 */public String parseContent(String urls) throws IOException {URL url = new URL(urls);BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));String s = "";StringBuffer sb = new StringBuffer("");while ((s = br.readLine()) != null) {sb.append(s + "rn");}br.close();return sb.toString();}public static void main(String[] args) {try {System.out.println(new NetUtils().parseContent("http://www.sina.cn"));} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}