Naver NCloud Platform - SMS 서비스

0. 멤버변수

String hostUrl = "https://sens.apigw.ntruss.com";
String requestUrl = "/sms/v2/services/";
String requestUrlType = "/messages";
String serviceId = "ServiceId";
String accessKey = "AccessKey";
String secretKey = "SecretKey"; 

// /sms/v2/services/{ServiceId}/messages
requestUrl += serviceId + requestUrlType;

// https://sens.apigw.ntruss.com/sms/v2/services/{ServiceId}/messages
apiUrl = hostUrl + requestUrl;

 

 

1. HttpURLConnection 생성 메서드

import java.net.URL;
import java.net.HttpURLConnection;

public HttpURLConnection setUrlConnect() throws Exception {
		
    // https://sens.apigw.ntruss.com/sms/v2/services/{ServiceId}/messages
    URL url = new URL(apiUrl);
    
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setUseCaches(false);
    conn.setDoOutput(true);
    conn.setDoInput(true);
    conn.setRequestMethod("POST");
    conn.setRequestProperty("Content-Type", "application/json;");
    String timestamp = Long.toString(System.currentTimeMillis());
    conn.setRequestProperty("x-ncp-apigw-timestamp", timestamp);
    conn.setRequestProperty("x-ncp-iam-access-key", accessKey);
    conn.setRequestProperty("x-ncp-apigw-signature-v2", makeSignature(timestamp));
    
    return conn;
}

 

 

2. Body 생성 (JSON 타입) 메서드

import com.google.gson.JsonArray;
import com.google.gson.JsonObject;

public String setJson(String phone, String content) {
    
    // JSON 을 활용한 body data 생성
    JsonObject bodyJson = new JsonObject();
    JsonObject toJson = new JsonObject();
    JsonArray arrJson = new JsonArray();
    
    // 필수 - 메시지 Type (SMS | LMS | MMS) (소문자 가능)
    bodyJson.addProperty("type", "SMS");
    
    // 필수 - 발신번호 (사전 등록된 발신번호만 사용 가능)
    bodyJson.addProperty("from", "01012341234");
    
    // 필수 - 기본 메시지 내용 (SMS : 최대 80byte)
    bodyJson.addProperty("content", content);
    
    // 필수 - messages.to	수신번호 ('-'를 제외한 숫자만 입력 가능)
    toJson.addProperty("to", phone);			
    arrJson.add(toJson);
    
    // 필수 - messages.XXX
    bodyJson.add("messages", arrJson);
    
    return bodyJson.toString();
}

 

 

3. 시그네쳐 생성 메서드

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import org.apache.tomcat.util.codec.binary.Base64;

public String makeSignature(String timestamp) throws Exception {
    String space = " ";
    String newLine = "\n";
    String method = "POST";

    String message = new StringBuilder()
            .append(method)
            .append(space)
            .append(requestUrl)
            .append(newLine)
            .append(timestamp)
            .append(newLine)
            .append(accessKey)
            .toString();
    
    SecretKeySpec signingKey =
            new SecretKeySpec(secretKey.getBytes("UTF-8"), "HmacSHA256");
    
    Mac mac = Mac.getInstance("HmacSHA256");
    mac.init(signingKey);
    
    byte[] rawHmac = mac.doFinal(message.getBytes("UTF-8"));
    String encodeBase64String = Base64.encodeBase64String(rawHmac);

    return encodeBase64String;
}

 

 

4. 전송 메서드

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;

public boolean sendSMS(String phone, String content) throws Exception {
    
    HttpURLConnection conn = setUrlConnect();
    
    String body = setJson(phone, content);
    
    DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
    dos.write(body.getBytes());
    dos.flush();
    dos.close();
    
    BufferedReader br = null;
    if(conn.getResponseCode() == 202) {
        br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
    } else {
        br = new BufferedReader(new InputStreamReader(conn.getErrorStream()));
    }
    
    String line;
    while((line = br.readLine()) != null) {
        System.out.println(line);
    }
    
    br.close();
    
    return true;
}