Sample-code/Java/src/SignatureTest.java at master · rosethorn999/Sample-code · GitHub

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import java.io.BufferedReader;

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.lang.reflect.Type;

import java.net.HttpURLConnection;

import java.net.ProtocolException;

import java.net.URL;

import java.security.SignatureException;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Calendar;

import java.util.List;

import java.util.Locale;

import java.util.TimeZone;

import java.util.zip.GZIPInputStream;

import com.google.gson.Gson;

import com.google.gson.reflect.TypeToken;

public class SignatureTest {

public static void main(String[] args) {

HttpURLConnection connection = null;

String APIUrl = "https://ptx.transportdata.tw/MOTC/v2/Rail/TRA/Station?$top=1&$format=JSON";

// 申請的APPID

// （FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF 為 Guest

// 帳號，以IP作為API呼叫限制，請替換為註冊的APPID & APPKey）

String APPID = "FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF";

// 申請的APPKey

String APPKey = "FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF";

// 取得當下的UTC時間，Java8有提供時間格式DateTimeFormatter.RFC_1123_DATE_TIME

// 但是格式與C#有一點不同，所以只能自行定義

String xdate = getServerTime();

String SignDate = "x-date: " + xdate;

String respond = "";

String Signature = "";

try {

// 取得加密簽章

Signature = HMAC_SHA1.Signature(SignDate, APPKey);

} catch (SignatureException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

System.out.println("Signature :" + Signature);

String sAuth = "hmac username=\"" + APPID + "\", algorithm=\"hmac-sha1\", headers=\"x-date\", signature=\""

+ Signature + "\"";

System.out.println(sAuth);

try {

URL url = new URL(APIUrl);

if ("https".equalsIgnoreCase(url.getProtocol())) {

SslUtils.ignoreSsl();

}

connection = (HttpURLConnection) url.openConnection();

connection.setRequestMethod("GET");

connection.setRequestProperty("Authorization", sAuth);

connection.setRequestProperty("x-date", xdate);

connection.setRequestProperty("Accept-Encoding", "gzip");

connection.setDoInput(true);

connection.setDoOutput(true);

respond = connection.getResponseCode() + " " + connection.getResponseMessage();

System.out.println("回傳狀態:" + respond);

BufferedReader in;

// 判斷來源是否為gzip

if ("gzip".equals(connection.getContentEncoding())) {

InputStreamReader reader = new InputStreamReader(new GZIPInputStream(connection.getInputStream()));

in = new BufferedReader(reader);

} else {

InputStreamReader reader = new InputStreamReader(connection.getInputStream());

in = new BufferedReader(reader);

}

// 返回的數據已經過解壓

StringBuffer buffer = new StringBuffer();

// 讀取回傳資料

String line, response = "";

while ((line = in.readLine()) != null) {

response += (line + "\n");

}

Type RailStationListType = new TypeToken<ArrayList<RailStation>>() {

}.getType();

Gson gsonReceiver = new Gson();

List<RailStation> obj = gsonReceiver.fromJson(response, RailStationListType);

for (RailStation railStation : obj)

System.out.println(railStation);

} catch (ProtocolException e) {

e.printStackTrace();

}

catch (Exception e) {

e.printStackTrace();

}

// 取得當下UTC時間

public static String getServerTime() {

Calendar calendar = Calendar.getInstance();

SimpleDateFormat dateFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z", Locale.US);

dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));

return dateFormat.format(calendar.getTime());

}

Sample-code/Java/src/SignatureTest.java at master · rosethorn999/Sample-code · GitHub

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