Java设置代理IP访问网站

源码

import javaioBufferedInputStream;

import URL;

import URLConnection;

public class TestProxyIp {

public static void main(String args[]){

//SystemgetProperties()setProperty(proxySet true); //如果不设置只要代理IP和代理端口正确此项不设置也可以

SystemgetProperties()setProperty(httpproxyHost );

SystemgetProperties()setProperty(httpproxyPort );

Systemoutprintln(getHtml()); //判断代理是否设置成功

}

private static String getHtml(String address){

StringBuffer html = new StringBuffer();

String result = null;

try{

URL url = new URL(address);

URLConnection conn = urlopenConnection();

connsetRequestProperty(UserAgentMozilla/ (compatible; MSIE ; Windows NT ; GTB; NET CLR ; CIBA));

BufferedInputStream in = new BufferedInputStream(conngetInputStream());

try {

String inputLine;

byte[] buf = new byte[];

int bytesRead = ;

while (bytesRead >= ) {

inputLine = new String(buf bytesRead ISO);

htmlappend(inputLine);

bytesRead = inread(buf);

inputLine = null;

}

buf = null;

} finally {

inclose();

conn = null;

url = null;

}

result = new String(htmltoString()trim()getBytes(ISO) gb)toLowerCase();

}catch(Exception e){

eprintStackTrace();

return null;

}

html = null;

return result;

}

}

结果

说明:如果代理IP地址不正确将使用原有IP访问 如果代理端口不正确将无法访问