HTTP在JAVA中使用，下面以华科HTTP为例：

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.Authenticator;
import java.net.HttpURLConnection;
import java.net.InetSocketAddress;
import java.net.PasswordAuthentication;
import java.net.Proxy;
import java.net.URL;

class ProxyAuthenticator extends Authenticator {
private String user, password;

public ProxyAuthenticator(String user, String password) {
this.user = user;
this.password = password;
}

protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user, password.toCharArray());
}
}

/**
* 注意：下面代码仅仅实现HTTP请求链接，每一次请求都是无状态保留的，仅仅是这次请求是更换IP的，如果下次请求的IP地址会改变
* 如果是多线程访问的话，只要将下面的代码嵌入到你自己的业务逻辑里面，那么
}
outSteam.close();
inStream.close();

return outSteam.toByteArray();
}
}