Java中怎么实现SMS短信通发送手机验证码

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.PostMethod;


public class SmsUtil {
    private String uid;
    private String key;

	//用于后面的Spring注入方式实现
    public  int sendSms(String smsMob,String smsTxt ){
       return sendSms(this.uid,this.key,smsMob,smsTxt);
    }
    public String getUid() {
        return uid;
    }

    public void setUid(String uid) {
        this.uid = uid;
    }

    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }

    public static void main(String[] args){
        int n=sendSms("用户名","密钥","手机号","短信内容");
        //如int n=sendSms("abc","55555","11234567574","验证码:8899");
        //返回的是发送成功的短信条数
        System.out.println("发送成功:"+n);
    }
    public static int sendSms(String uid,String key,String smsMob,String smsTxt )
    {
        PostMethod post =null;
        try {
            HttpClient client = new HttpClient();
            post = new PostMethod("http://utf8.api.smschinese.cn");
            post.addRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf8");//在头文件中设置转码
            NameValuePair[] data = {
                    new NameValuePair("Uid", uid)
                    , new NameValuePair("Key", key)
                    , new NameValuePair("smsMob", smsMob)
                    , new NameValuePair("smsText", smsTxt)};
            post.setRequestBody(data);

            client.executeMethod(post);
            return Integer.parseInt(post.getResponseBodyAsString());
        }catch (Exception ex){
            ex.printStackTrace();
            throw new RuntimeException(ex);
        }
        finally {
            post.releaseConnection();
        }
    }
}