java程序请求Http请求,返回其网页源文件,xml 等都可以返回

java程序请求Http请求,返回其网页源文件,xml 等都可以返回 package com.sun.test; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.MalformedURLException; import java.net.URL; import javax.swing.JFrame; public class Resol extends JFrame { // 读取url对象所引用的web页 public void readPage(URL url) { BufferedReader reader = null; String line; StringBuffer str = new StringBuffer(); try { // 获取url输入流 reader = new BufferedReader(new InputStreamReader(url.openStream())); // 读取一行，并添加至tPage中 while ((line = reader.readLine()) != null) str.append(line); } catch (IOException ie) { } finally { try { if (reader != null) reader.close(); } catch (Exception e) { } } System.out.println(str.toString()); } public static void main(String[] args) { Resol me = new Resol(); try { me.readPage(new URL("")); } catch (MalformedURLException e) { e.printStackTrace(); } } }