java 实现发送短信验证码

java 发送短信验证码：

package com.isoftstone.anze.convenient.utils;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

// import java.io.PrintWriter;

/**
 * @author 
 * @Description:HTTP 请求
 */

public class ChuangLanSmsUtil {

    /**
     * @author tianyh @Description @param path @param postContent @return String @throws
     */
    public static String sendSmsByPost(String path, String postContent) {
        URL url = null;
        try {
            url = new URL(path);
            HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
            httpURLConnection.setRequestMethod("POST");// 提交模式
            httpURLConnection.setConnectTimeout(10000);// 连接超时 单位毫秒
            httpURLConnection.setReadTimeout(10000);// 读取超时 单位毫秒
            // 发送POST请求必须设置如下两行
            httpURLConnection.setDoOutput(true);
            httpURLConnection.setDoInput(true);
            httpURLConnection.setRequestProperty("Charset", "UTF-8");
            httpURLConnection.setRequestProperty("Content-Type", "application/json");

            httpURLConnection.connect();
            OutputStream os = httpURLConnection.getOutputStream();
            os.write(postContent.getBytes("UTF-8"));
            os.flush();

            StringBuilder sb = new StringBuilder();
            int httpRspCode = httpURLConnection.getResponseCode();
            if (httpRspCode == HttpURLConnection.HTTP_OK) {
                // 开始获取数据
                BufferedReader br = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream(),
                                                                             "utf-8"));
                String line = null;
                while ((line = br.readLine()) != null) {
                    sb.append(line);
                }
                br.close();
                return sb.toString();

            }

        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

}