【Java】如何获取创蓝253短信验证码？

package com.bcloud.msg.http;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.URLDecoder;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.URI;
import org.apache.commons.httpclient.methods.GetMethod;

/**
 * 
 * @param url 应用地址，类似于http://ip:port/msg/
 * @param account 账号
 * @param pswd 密码
 * @param mobile 手机号码，多个号码使用","分割
 * @param msg 短信内容
 * @param needstatus 是否需要状态报告，需要true，不需要false
 * @return 返回值定义参见HTTP协议文档
 * @throws Exception
 */
public static String batchSend(String url, String account, String pswd, String mobile, String msg,
        boolean needstatus, String extno) throws Exception {
    HttpClient client = new HttpClient();
    GetMethod method = new GetMethod();
    try {
        URI base = new URI(url, false);
        method.setURI(new URI(base, "HttpBatchSendSM", false));
        method.setQueryString(new NameValuePair[] { 
                new NameValuePair("account", account),
                new NameValuePair("pswd", pswd), 
                new NameValuePair("mobile", mobile),
                new NameValuePair("needstatus", String.valueOf(needstatus)), 
                new NameValuePair("msg", msg),
                new NameValuePair("extno", extno), 
            });
        int result = client.executeMethod(method);
        if (result == HttpStatus.SC_OK) {
            InputStream in = method.getResponseBodyAsStream();
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024];
            int len = 0;
            while ((len = in.read(buffer)) != -1) {
                baos.write(buffer, 0, len);
            }
            return URLDecoder.decode(baos.toString(), "UTF-8");
        } else {
            throw new Exception("HTTP ERROR Status: " + method.getStatusCode() + ":" + method.getStatusText());
        }
    } finally {
        method.releaseConnection();
    }

}

}