[原创]通过Java程序实现Dr.COM Hotspot的上网验证

package drcom;

import java.io.IOException;
import java.io.InputStream;

import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpMethod;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.cookie.CookiePolicy;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;

public class Login {

    String userAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; InfoPath.1; .NET CLR 2.0.50727; MAXTHON 2.0)";
    HttpClient client = new HttpClient();
    static final String TARGET_SITE = "10.29.0.250";
    static final int TARGET_PORT = 80;
    public static void main(String[] args) throws HttpException, IOException {
        Login l=new Login();
        PostMethod method=new PostMethod("http://10.29.0.250/F.htm");
        l.initMethod(method);
        l.fillLogonData(method);
        method.setRequestHeader("Referer","http://10.29.0.250/");
        l.client.executeMethod(method);
        String s=l.getResponse(method);
        System.out.println(s);
    }
    public Login() {
        client.getHostConfiguration().setHost(TARGET_SITE, TARGET_PORT);
    }

    public void initMethod(HttpMethod method) {
        method.setRequestHeader("User-Agent", userAgent);
        method.setRequestHeader("Accept-Encoding", "gzip, deflate");
        method.setRequestHeader("Accept-Language", "zh-cn");
        method.setRequestHeader("Accept", "*/*");
        method.setRequestHeader("Connection", "Keep-Alive");
        method.getParams().setCookiePolicy(CookiePolicy.RFC_2109);
        method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
                new DefaultHttpMethodRetryHandler());
    }
    public String getResponse(HttpMethod method) throws IOException {
        InputStream is = method.getResponseBodyAsStream();
        StringBuffer buf = new StringBuffer();
        byte b[] = new byte[16384];
        int len = 0;
        while ((len = is.read(b)) > 0) {
            buf.append(new String(b, 0, len, "gb2312"));
        }
        String response = buf.toString();
        return response;
    }
    public void fillLogonData(PostMethod method) {
        NameValuePair[] data = new NameValuePair[3];
        data[0] = new NameValuePair("DDDDD", "username");
        data[1] = new NameValuePair("upass", "password");
        data[2]=new NameValuePair("0MKKey","登录 Login");
        method.addParameters(data);
    }

}