Java 获取网页 html代码

package org.test;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;

public class GetHtml {
public static void main(String[] args){
System.out.println("hello world !!!");
try {
//创建一个URL实例
URL url = new URL("http://localhost:8080/estore");
try {
//通过URL的openStrean方法获取URL对象所表示的自愿字节输入流
InputStream is = url.openStream();
InputStreamReader isr = new InputStreamReader(is,"utf-8");

//为字符输入流添加缓冲
BufferedReader br = new BufferedReader(isr);
String data = br.readLine();//读取数据

while (data!=null){//循环读取数据
System.out.println(data);//输出数据
data = br.readLine();
}
br.close();
isr.close();
is.close();
} catch (IOException e) {
e.printStackTrace();
}
} catch (MalformedURLException e) {
e.printStackTrace();
}
}
}