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Coolsms Java SDK using Rest API.
package net.nurigo.java_sdk;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import javax.crypto.*;
import javax.crypto.spec.SecretKeySpec;
import javax.net.ssl.HttpsURLConnection;
import java.util.Properties;
import java.util.Random;
import java.util.HashMap;
import java.util.Map.Entry;
import net.nurigo.java_sdk.exceptions.CoolsmsException;
import net.nurigo.java_sdk.exceptions.CoolsmsSDKException;
import net.nurigo.java_sdk.exceptions.CoolsmsServerException;
import net.nurigo.java_sdk.exceptions.CoolsmsSystemException;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.JSONValue;
import org.junit.Test;
/**
* @mainpage JAVA SDK
* @section intro 소개
* - 소개 : Coolsms REST API
* - 버전 : 2.0
* - 설명 : Coolsms REST API 를 이용 보다 빠르고 안전하게 문자메시지를 보낼 수 있는 JAVA로 만들어진 SDK 입니다.
* @section CreateInfo 작성 정보
* - 작성자 : Nurigo
* - 작성일 : 2015/03/18 *
* @section common 기타 정보
* - 저작권 GPL v2
*/
/**
* @class Coolsms
* @brief Coolsms Rest API core class, using the Rest API
*/
public class Coolsms {
/** base resource url & sdk_version */
final String URL = "http://14.63.186.175";
final String SDK_VERSION = "1.0";
/** api name & api version */
private String apiName = "sms";
private String apiVersion = "2";
/** need for authentication */
private String salt;
private String timestamp;
private String signature;
private String apiKey;
private String apiSecret;
/** connection type & charset */
boolean useHttp = false;
String charset = "UTF-8";
/**
* @brief set apiKey, apiSecret
* @param string apiKey [required]
* @param string apiSecret [required]
*/
public Coolsms(String apiKey, String apiSecret) {
// disable SNI. Java 1.7 bug
System.setProperty("jsse.enableSNIExtension", "false");
this.apiKey = apiKey;
this.apiSecret = apiSecret;
}
/**
* @brief sendPostRequest (POST)
* @param string resource [required]
* @param hashmap params [required]
* @return JSONObject
* @throws CoolsmsException
*/
public JSONObject sendPostRequest(String resource, HashMap params) throws CoolsmsException {
JSONObject obj = new JSONObject();
// set base info
params = setBaseInfo(params);
// create delimiter
String boundary = this.salt + this.timestamp;
String delimiter = "\r\n--" + boundary + "\r\n";
// create stringbuffer and append delimiter
StringBuffer postDataBuilder = new StringBuffer();
postDataBuilder.append(delimiter);
// set contents
for (Entry entry : params.entrySet()) {
String key = entry.getKey();
String value = entry.getValue();
// if key is image. process below
if (key == "image")
continue;
postDataBuilder = setPostData(postDataBuilder, key, value, delimiter);
}
try {
// start https connection
URL url = new URL(getResourceUrl(resource));
//HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true); // Server에서 온 데이터를 입력 받을 수 있도록
connection.setDoOutput(true); // Server에서 온 데이터를 출력 할수 있도록
connection.setRequestMethod("POST");
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
connection.setUseCaches(false);
DataOutputStream outputStream = new DataOutputStream(new BufferedOutputStream(connection.getOutputStream()));
// set image data
if (params.get("image") != null) {
// set image file
postDataBuilder.append(setFile("image", params.get("image")));
postDataBuilder.append("\r\n");
FileInputStream fileStream = new FileInputStream(params.get("image"));
outputStream.writeUTF(postDataBuilder.toString());
// add an image file to the buffer
int maxBufferSize = 1024;
int bufferSize = Math.min(fileStream.available(), maxBufferSize);
byte[] buffer = new byte[bufferSize];
int byteRead = fileStream.read(buffer, 0, bufferSize);
while (byteRead > 0) {
outputStream.write(buffer);
bufferSize = Math.min(fileStream.available(), maxBufferSize);
byteRead = fileStream.read(buffer, 0, bufferSize);
}
fileStream.close();
} else {
outputStream.writeUTF(postDataBuilder.toString());
}
outputStream.writeBytes(delimiter);
outputStream.flush();
outputStream.close();
// get response data
String response = getHttpsResponse(connection);
if (response == null)
return obj;
// casting JSONObject or JSONArray
try {
obj = (JSONObject) JSONValue.parse(response);
} catch (ClassCastException e) {
try {
JSONArray response_array = (JSONArray) JSONValue.parse(response);
obj.put("data", response_array);
} catch (Exception ex) {
throw new CoolsmsSystemException(ex.getMessage(), 302);
}
}
} catch (IOException e) {
throw new CoolsmsSystemException(e.getMessage(), 399);
}
return obj;
}
/**
* @brief https sendGetRequest ( GET )
* @param string resource [required]
* @param hashmap params [required]
* @return JSONObject
* @throws CoolsmsException
*/
public JSONObject sendGetRequest(String resource, HashMap params) throws CoolsmsException {
JSONObject obj = new JSONObject();
// set base info
params = setBaseInfo(params);
String data = getResourceUrl(resource) + "?";
try {
data = data + URLEncoder.encode("api_key", this.charset) + "=" + URLEncoder.encode(this.apiKey, this.charset);
} catch (UnsupportedEncodingException e) {
throw new CoolsmsSystemException(e.getMessage(), 399);
}
// remove api_secret
params.remove("api_secret");
// set contents
for (Entry entry : params.entrySet()) {
String key = entry.getKey();
String value = entry.getValue();
// api_key 는 위에서 넣어줬기 때문에 continue
if (key == "api_key")
continue;
data = setGetData(data, key, value);
if (data == null) {
throw new CoolsmsSDKException("params is something wrong, key : " + key + " value : " + value, 201);
}
}
try {
URL url = new URL(data);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
String response = getHttpsResponse(connection);
// casting JSONObject or JSONArray
try {
obj = (JSONObject) JSONValue.parse(response);
} catch (ClassCastException e) {
try {
JSONArray response_array = (JSONArray) JSONValue.parse(response);
obj.put("data", response_array);
} catch (Exception ex) {
throw new CoolsmsSystemException(ex.getMessage(), 302);
}
}
} catch (IOException e) {
throw new CoolsmsSystemException(e.getMessage(), 399);
}
return obj;
}
/**
* @brief set api name and api version
* @param string $api_name [required] 'sms', 'senderid', 'image'
* @param integer $api_version [required]
* @throws CoolsmsException
*/
public void setApiConfig(String api_name, String api_version) throws CoolsmsException {
if (!checkString(api_name) || !checkString(api_version))
throw new CoolsmsSDKException("API name and version is requried", 201);
this.apiName = api_name;
this.apiVersion = api_version;
}
/**
* @brief set base info
* @param hashmap params [required]
* @return
* @throws CoolsmsException
*/
private HashMap setBaseInfo(HashMap params) throws CoolsmsException {
Properties properties = System.getProperties();
this.salt = getSalt();
this.timestamp = getTimestamp();
this.signature = getSignature(this.apiSecret, salt, timestamp); // getSignature
params.put("api_key", this.apiKey);
params.put("salt", this.salt);
params.put("signature", this.signature);
params.put("timestamp", this.timestamp);
params.put("os_platform", properties.getProperty("os.name"));
params.put("dev_lang", "JAVA " + properties.getProperty("java.version"));
params.put("sdk_version", "JAVA SDK " + this.SDK_VERSION);
return params;
}
/**
* @brief 업로드할 파일에 대한 메타 데이터를 설정한다.
* @param string key [required] 서버에서 사용할 파일 변수명
* @param string fileName [required] 서버에서 저장될 파일명
* @return string
*/
public String setFile(String key, String fileName) {
return "Content-Disposition: form-data; name=\"" + key + "\";filename=\"" + fileName + "\"\r\nContent-type: image/jpeg;\r\n";
}
/**
* @brief string data를 http method POST 방식 data로 변경
* @param stringbuffer builder [required]
* @param string key [required]
* @param string value [required]
* @param string delimiter [required]
* @return stringbuffer
* @throws CoolsmsException
*/
public StringBuffer setPostData(StringBuffer builder, String key, String value, String delimiter) throws CoolsmsException {
try {
String data = "Content-Disposition: form-data; name=\"" + key + "\"\r\n\r\n" + value;
builder.append(data);
builder.append(delimiter);
} catch (Exception e) {
throw new CoolsmsSystemException(e.getMessage(), 302);
}
return builder;
}
/**
* @brief string data를 http method GET 방식 data로 변경
* @param string data [required]
* @param string key [required]
* @param string value [required]
* @param string charSet [required]
* @return string
* @throws CoolsmsException
*/
public String setGetData(String data, String key, String value) throws CoolsmsException {
try {
data += "&" + URLEncoder.encode(key, this.charset) + "=" + URLEncoder.encode(value, this.charset);
} catch (Exception e) {
throw new CoolsmsSystemException(e.getMessage(), 302);
}
return data;
}
/**
* @brief return resource url from api.coolsms.co.kr
* @param string resource [required]
* @return string
*/
private String getResourceUrl(String resource) {
String resourceUrl = String.format("%s/%s/%s/%s", this.URL, this.apiName, this.apiVersion, resource);
return resourceUrl;
}
/**
* @brief get signature
* @param string api_secret [required]
* @param string timestamp [required]
* @return string
* @throws CoolsmsException
*/
public String getSignature(String apiSecret, String salt, String timestamp) throws CoolsmsException {
String signature = "";
try {
String temp = timestamp + salt;
SecretKeySpec keySpec = new SecretKeySpec(apiSecret.getBytes(), "HmacMD5");
Mac mac = Mac.getInstance("HmacMD5");
mac.init(keySpec);
// 바이너리를 hex로 변환
byte[] result = mac.doFinal(temp.getBytes());
char[] hexArray = "0123456789ABCDEF".toCharArray();
char[] hexChars = new char[result.length * 2];
for (int i = 0; i < result.length; i++) {
int positive = result[i] & 0xff;
hexChars[i * 2] = hexArray[positive >>> 4];
hexChars[i * 2 + 1] = hexArray[positive & 0x0F];
}
signature = new String(hexChars);
} catch (Exception e) {
throw new CoolsmsSystemException(e.getMessage(), 302);
}
return signature;
}
/**
* @brief get timestamp
* @return string
*/
public String getTimestamp() {
long timestamp_long = System.currentTimeMillis() / 1000;
String timestamp = Long.toString(timestamp_long);
return timestamp;
}
/**
* @brief get https response
* @param httpurlconnection api_key [required]
* @return string
* @throws CoolsmsException
*/
public String getHttpsResponse(HttpURLConnection connection) throws CoolsmsException {
int responseCode = 0;
String responseBody = null;
String inputLine = null;
BufferedReader in = null;
JSONObject obj = new JSONObject();
try {
responseCode = connection.getResponseCode();
if (responseCode != 200) {
in = new BufferedReader(new InputStreamReader(connection.getErrorStream()));
} else {
in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
}
while ((inputLine = in.readLine()) != null) {
responseBody = inputLine;
}
// response code is not 200, throw CoolsmsServerException
if (responseCode != 200)
throw new CoolsmsServerException(responseBody, responseCode);
} catch (Exception e) {
throw new CoolsmsSystemException(e.getMessage(), 302);
}
return responseBody;
}
/**
* @brief get salt data
* @return string
*/
public String getSalt() {
String uniqId = "";
Random randomGenerator = new Random();
// length - set the unique Id length
for (int length = 1; length <= 10; ++length) {
int randomInt = randomGenerator.nextInt(10); // digit range from 0 - 9
uniqId += randomInt + "";
}
return uniqId;
}
/**
* @brief check string is empty or null
* @return boolean
*/
public boolean checkString(String str) {
str = str.trim();
if (str == null || str.isEmpty())
return false;
return true;
}
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