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(); } }