java URL类获取远程网页

import java.io.IOException;

import java.io.InputStream;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLConnection;

public class Test {

public static void main(String[] args) throws IOException {

URL url;

url = new URL("http://www.hao123.com");

URLConnection uc = url.openConnection();

InputStream in = uc.getInputStream();

byte[] ch=new byte[1024];

StringBuilder sb=new StringBuilder();

int c=0;

while ((c = in.read(ch)) != -1){

System.out.println(new String(ch,0,c));

}

in.close();

}

}

+++++++++++封装了一个工具类++++++++++++++++++

import java.io.IOException;

import java.io.InputStream;

import java.net.URL;

import java.net.URLConnection;

public class GetByURL {

private String url;

public GetByURL(String url) {

this.url=url;

}

public String getContents() throws IOException{

URL url2=new URL(this.url);

URLConnection uc = url2.openConnection();

InputStream in = uc.getInputStream();

byte[] ch=new byte[1024];

StringBuilder sb=new StringBuilder();

int c=0;

while ((c = in.read(ch)) != -1){

String str=new String(ch,0,c);

sb.append(str);

}

in.close();

return sb.toString();

}

}