手機号發送驗證碼

在做項目的時候很多時候再進行注冊的時候，我們必不可少的會用到用手機号碼進行注冊，但有些人不知道怎麼進行發送，下面我介紹一種發送驗證碼的API，這種方法僅限于個人開發項目用于練手時可以使用，如果需要用到公司項目中去的話，不建議。

在這裡我們用到了一個營運商--“秒滴”，我們通過注冊他們的賬号，可以獲得他們的接口（API）使用權，然後就可以使用短信驗證技術了，具體的JAVA實作代碼如下：

//以下三個值是通過注冊秒滴得到的個人ID值的
	public static String ACCOUNT_SID  = "**************";
	public static String AUTH_TOKEN  = "**************";
	public static String REST_URL  = "****************";
}
           

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.MessageDigest;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;

public class SMSSafetyVerificationUtil {
	private static String REST_URI = "/industrySMS/sendSMS";
	
	private static String getTimestamp(){
		SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
		String time = sdf.format(new Date());		
		return time;
	}
	private static String getSig(){
		char[] hexValue = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
		String timeStamp = getTimestamp();
		try {
			
			String all_str = SMSSafetyVerificationConfig.ACCOUNT_SID + SMSSafetyVerificationConfig.AUTH_TOKEN + timeStamp;
//			String str = DigestUtils.md5Hex(all_str);   //不用這種方法
			
			MessageDigest md = MessageDigest.getInstance("md5");
			byte[] bs = md.digest(all_str.getBytes());
			char[] cs = new char[bs.length*2];
			int k = 0;
			for (int i = 0; i < bs.length; i++) {
				cs[k++] = hexValue[bs[i] >>> 4 &0xf];
				cs[k++] = hexValue[bs[i] & 0xf];				
			}
			return new String(cs);
			
		} catch (Exception e) {
			e.printStackTrace();
		}
		
		return null;
	}
	public static String getPostContent(){
		
		return "×tamp="+getTimestamp()+"&sig="+getSig()+"&respDataType=JSON";
	}
	
	public static String execute(String to,String num){
		String body = "accountSid="+SMSSafetyVerificationConfig.ACCOUNT_SID+"&smsContent="
				+"【雲購】注冊驗證碼：["+num+"]，如非本人操作，請忽略此短信。"
				+"&to="+to;
		body += getPostContent(); 
		try {
			URL url = new URL(SMSSafetyVerificationConfig.REST_URL+REST_URI);
			
			HttpURLConnection hConnection = (HttpURLConnection) url.openConnection();
			hConnection.setRequestMethod("POST");
			hConnection.setDoInput(true);
			hConnection.setDoOutput(true);
			hConnection.setConnectTimeout(6000);			
			hConnection.setReadTimeout(60000);
			OutputStreamWriter out = new OutputStreamWriter(hConnection.getOutputStream(), "UTF-8"); 
			out.write(body);
			out.flush();
			
			BufferedReader br = new BufferedReader(new InputStreamReader(hConnection.getInputStream()));
			char[] cs = new char[1024*1024];
			int len = -1;
			StringBuffer sb  = new StringBuffer();
			while((len = br.read(cs)) != -1){				
				sb.append(String.copyValueOf(cs, 0, len));
			}
			
			return sb.toString();
			
		} catch (Exception e) {
			e.printStackTrace();
		}
		
		
		return null;
	}
	public static String getRandomNum(){
		Random random = new Random();
		String i = "";
		while(i.length() != 6){
			i = random.nextInt(1000000)+"";
		}		
		return i;
	}
}
           
    
public static void main(String[] args) {
		String to = "183********";   //這是接收驗證碼的手機号碼
		String num = SMSSafetyVerificationUtil.getRandomNum();		
		String str = SMSSafetyVerificationUtil.execute(to,num);
		System.out.println(str);
	}
}