I'm confused on how can I connect my android mobile to Laravel I've tried different ways but returns me an Java.ioFileNotFoundException:http://122.168...
I found out that the problem is the CSRF-TOKEN when I've tried disabling the CSRF-TOKEN in my laravel it works , what I tried I fetch first my CSRF-TOKEN and submit it with CSRF-TOKEN when buttons click but it didn't work either.
I used Plugin for Advanced-HttpURLConnection GITHUB LINK link
This is what I tried
Handler handler = new Handler(Looper.getMainLooper());
handler.post(new Runnable() {
#Override
public void run() {
FetchData fetchData = new FetchData("http://122.168.1.3/app/refreshtokens");
if (fetchData.startFetch()) {
if (fetchData.onComplete()) {
String fetchResult = fetchData.getResult();
try {
//getting the token from fetch data
JSONObject jsonObject = new JSONObject(fetchResult);
String csrfToken = jsonObject.getString("csrfToken");
String[] field = new String[3];
field[0] = "id_no";
field[1] = "password";
field[2] = "X-CSRF-TOKEN";
//Creating array for data
String[] data = new String[3];
data[0] = id_no;
data[1] = password;
data[2] = csrfToken;
PutData putData = new PutData("http://122.168.1.3/app/auth", "POST", field, data);
if (putData.startPut()) {
if (putData.onComplete()) {
String result = putData.getResult();
//just want to getData when success
Toast.makeText(getApplicationContext(), "Testt " + result, Toast.LENGTH_SHORT).show();
}
}
//End Write and Read data with URL
} catch (JSONException e) {
Toast.makeText(getApplicationContext(), "error catch " + e, Toast.LENGTH_SHORT).show();
}
}
}}
});
I'm working on an android app. I have this form, when the button is clicked it execute a method called insertData(). Inside this function I change a local variable called "address" with another function getAddress().
Inside the function getAddress the local variable "address" is changed successfully. But when we enter the function insertData(), the variable "address" still contains the old data in this case "Location Unknown".
What am I not seeing here?
insertData()
public String address = "Location unknown";
public boolean insertData(String title, String description, String image, Double longitude, Double latitude, String date) {
String location = Double.toString(longitude) + "," + Double.toString(latitude);
getAddress(location);
Log.d("TAG2", address); // Still "Location unknown"
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put(COL_2, title);
contentValues.put(COL_3, description);
contentValues.put(COL_4, image);
contentValues.put(COL_5, longitude);
contentValues.put(COL_6, latitude);
contentValues.put(COL_7, date);
contentValues.put(COL_8, address);
long result = db.insert(TABLE_NAME, null, contentValues);
if (result == -1)
return false;
else
return true;
}
getAddress()
public void getAddress(String coordination) {
String token = "{removed for a reason haha}";
String url = "https://api.mapbox.com/geocoding/v5/mapbox.places/" + coordination + ".json?access_token=" + token;
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url(url).build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
#Override
public void onResponse(Call call, Response response) throws IOException {
if(response.isSuccessful()) {
String data = response.body().string();
JsonParser parser = new JsonParser();
try {
JsonObject obj = (JsonObject) parser.parse(data);
JsonArray arr = obj.getAsJsonArray("features");
JsonObject objj = arr.get(2).getAsJsonObject();
String place = objj.get("place_name").getAsString();
address = place;
Log.d("TAG", address); // Gives an address
}
catch (Exception e) {
e.printStackTrace();
}
}
}
});
}
Logcat Debugger
2019-06-15 20:12:58.968 31465-31465/com.example.triptracker D/TAG2: Location unkown
2019-06-15 20:12:59.269 31465-31569/com.example.triptracker D/TAG: Mountain View, California, United States
I cannot change the onResponse() method to return String. I don't know why, but it is a read only method.
getAddress {changed}
public void getAddress(String coordination) {
String token = "{empty}";
String url = "https://api.mapbox.com/geocoding/v5/mapbox.places/" + coordination + ".json?access_token=" + token;
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url(url).build();
try (Response response = client.newCall(request).execute()) {
String data = response.body().string();
JsonParser parser = new JsonParser();
if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);
JsonObject obj = (JsonObject) parser.parse(data);
JsonArray arr = obj.getAsJsonArray("features");
JsonObject objj = arr.get(2).getAsJsonObject();
String place = objj.get("place_name").getAsString();
address = place;
Log.d("TAG", address);
}
catch (Exception e) {
e.printStackTrace();
}
}
getAddress() does its work asynchronously. By the time getAddress() returns, your HTTP request will not be complete, and so address will not have changed yet.
Since insertData() is doing disk I/O, you should be calling insertData() on its own background thread, so you do not freeze the UI while the disk I/O is going on. If that is the case, then you can use OkHttp synchronously, using execute() instead of enqueue(). That will allow you to have getAddress() return the address, so you can insert it into your database.
I'm using Rest service to get a list of States of a Country (countryid) from database. The service runs well in Tomcat but it doesn't run in Android. Below is the code to invoke the Rest service. The params.put("countryid",countryID) method doesn't receive integer. Could you please help me over come this issue?
public void getDataForStateSpinner(){
//new StateSpinnerAsync().execute();
System.out.println("getDataForStateSpinner(), spnCountry adapter: " + spnCountry);
System.out.println("spnCountry.getSelectedItem(): " + spnCountry.getSelectedItem());
if (spnCountry.getSelectedItem()!=null){
System.out.println("getDataForStateSpinner(), spnCountry adapter isn't empty");
final Country country = (Country) spnCountry.getSelectedItem();
int countryID = country.getCountryID();
RequestParams params = new RequestParams();
if (countryID>=0){
params.put("countryid", countryID);
invokeWS_State(params);
} else{
Toast.makeText(mParent.get(), "Can not get CountryID", Toast.LENGTH_LONG).show();
}
}
}
public void invokeWS_State(RequestParams params){
System.out.println("Inside invokeWS_State");
AsyncHttpClient client = new AsyncHttpClient();
System.out.println("Inside invokeWS_State, client: " + client);
System.out.println("Inside invokeWS_State onSuccess, params: " + params);
client.get(stateURL, params, new AsyncHttpResponseHandler(){
#Override
public void onSuccess(String respond){
try{
System.out.println("Inside invokeWS_State onSuccess, stateURL: " + stateURL);
System.out.println("Inside invokeWS_State onSuccess, respond:" + respond);
JSONArray jsonArr = new JSONArray(respond);
//JSONObject jsonObject = jsonArr.getJSONObject(0);
System.out.println("Inside invokeWS_State onSuccess jsonArr:" + jsonArr);
String stateList = jsonArr.toString();
System.out.println("Inside invokeWS_State onSuccess stateList:" + stateList);
states = (ArrayList<State>) fromJasonToJava_State(stateList);
for (State state : states) {
System.out.println("State id: " + state.getStateID() + " name: " + state.getStateName());
}
spnStateAdapter = new ArrayAdapter<State>(mParent.get(), android.R.layout.simple_spinner_dropdown_item, states);
spnStateAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spnState.setAdapter(spnStateAdapter);
} catch (JSONException e){
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
#Override
public void onFailure(int statusCode, Throwable error, String content){
String resultString = null;
if (statusCode == 404){
resultString = "Requested resource not found";
Toast.makeText(mParent.get(), resultString, Toast.LENGTH_LONG).show();
} else if (statusCode == 500) {
resultString = "Something went wrong at server end!";
Toast.makeText(mParent.get(), resultString, Toast.LENGTH_LONG).show();
} else {
resultString = "Unexpected Error occcured! [Most common Error: Device might not be connected to Internet or remote server is not up and running]";
Toast.makeText(mParent.get(), resultString, Toast.LENGTH_LONG).show();
}
}
});
}
And below is the Rest service which runs well in Tomcat:
#Path("/State")
public class StatesResource {
#GET
#Path("/GetStates")
#Produces(MediaType.APPLICATION_JSON)
//http://localhost:8080/com.fms.FMSRestfulWS/State/GetStates?countryid=1
public String getStates(#DefaultValue("1") #QueryParam("countryid") int countryID){
String states = null;
try{
ArrayList<State> feedData = null;
StateLoading stateLoading = new StateLoading();
feedData = stateLoading.getAllStatesForCountry(countryID);
Gson gson = new Gson();
states = gson.toJson(feedData);
}catch (Exception e){
System.out.println("System Error " + e);
}
return states;
}
}
Do only one change, it will work perfect.
params.put("countryid", ""+countryID);
http://www.androidhive.info/2014/10/android-building-group-chat-app-using-sockets-part-2/
Hi,
This is a tutorial about building a group chat app using socket programming. This app allows us to chat between multiple devices like android mobiles and web.
I want to send more than one "String" at a time to the server. I'm having trouble figuring that out.
The link to the tutorial where I downloaded the code is pasted above. I've already made the dynamic web page and I have it hosted on eapps.com At the very bottom of the this email is the edited code for the app. If you click the link above, you can see how I changed it.
The way it works is..
A web socket is created using WebSocketClient class and it has all the callback methods like onConnect, onMessage and onDisconnect.
In onMessage method parseMessage() is called to parse the JSON received from the socket server.
In parseMessage() method, the purpose of JSON is identified by reading the flag value.
When a new message is received, the message is added to list view data source and adapter.notifyDataSetChanged() is called to update the chat list.
sendMessageToServer() method is used to send the message from android device to socket server.
playBeep() method is called to play device’s default notification sound whenever a new message is received.
When you click the btnSend. it uses this method from the UtilsXd class. I've changed it a little in an attempt to pass an extra value.
public String getSendMessageJSONXD(String message, String whichPicIndex) {
String json = null;
try {
JSONObject jObj = new JSONObject();
jObj.put("flag", FLAG_MESSAGE);
jObj.put("sessionId", getSessionId());
jObj.put("message", message);
jObj.put("id", id);
json = jObj.toString();
} catch (JSONException e) {
e.printStackTrace();
}
return json;
}
First of all, what I still don't understand is, where did the values for
String sessionId = jObj.getString("sessionId");
and
String onlineCount = jObj.getString("onlineCount");
from this method
private void parseMessage(final String msg, String idINDEX) {
come from.
They were't added in the JSON object created in the UtilsXD class so how are they created?
That's not the problem I'm having. This is.
superString is the value I want to pass to dictate which picture to show.
superString = (sharedPrefs.getString("prefSyncAvatar", "1"));
You can change your picture in from the settings.
When a message is received, a switch/case statement changes the picture of/ for the message received according to the value passed by superString.
I should be able to sit there and just receive messages, and whatever number the user passes, the profilePicture should be set according to that number.
Here's where the problem begins.
This constructer builds a message based of the message that's just been parsed.
// Message m = new Message(fromName, message, isSelf);
Message m = new Message(fromName, message, isSelf, id, name,
image, status, profilePic, timeStamp, url);
In this method.
private void parseMessage(final String msg, String idINDEX) {
I can pass an value to the string "id" excluding the JSON I need it to.
String id = idINDEX;
this works,
String id = "0";
this works,
String id = utils.getPictureId();
this works,
String id = jObj.getString("id");
This doesn't work.
This is the error I'm getting.
org.json.JSONException: No value for id (this is the issue)
I've added the key/value pair
jObj.put("id", id);
in
public String getSendMessageJSONXD(String message, String whichPicIndex) {
but it's not coming though to the message.
Here's where I think the problem is.
The method onMessage, isn't can't take an extra parameter because it's from a library project. And I can't find that method to make a new constructor.
#Override
public void onMessage(String message) {
Log.d(TAG, String.format("Got string message! %s", message));
parseMessage(message, superString);
}
#Override
public void onMessage(byte[] data) {
Log.d(TAG, String.format("Got binary message! %s",
bytesToHex(data)));
String hello = "99";
parseMessage(bytesToHex(data), superString);
}
/////// Here's the final code below ////////
// JSON flags to identify the kind of JSON response
private static final String TAG_SELF = "self", TAG_NEW = "new",
TAG_MESSAGE = "message", TAG_ID = "id", TAG_EXIT = "exit";
#SuppressWarnings("deprecation")
#SuppressLint({ "NewApi", "CutPasteId" })
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_chat);
showUserSettings();
getActionBar().setTitle("City Chat - Beta 1.3");
superString = (sharedPrefs.getString("prefSyncAvatar", "1"));
listView = (ListView) findViewById(R.id.list_view_messages);
feedItems = new ArrayList<FeedItem>();
// We first check for cached request
vollewStuff();
//
//
// THis is where this fun begins
btnSend = (Button) findViewById(R.id.btnSend);
inputMsg = (EditText) findViewById(R.id.inputMsg);
listViewMessages = (ListView) findViewById(R.id.list_view_messages);
utils = new UtilsXD(getApplicationContext());
// Getting the person name from previous screen
Intent i = getIntent();
name = i.getStringExtra("name");
Integer.parseInt((sharedPrefs.getString("prefSyncAvatar", "1")));
btnSend.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// Sending message to web socket server
sendMessageToServer(utils.getSendMessageJSONXD(inputMsg
.getText().toString(), superString), superString);
utils.storePictureId((sharedPrefs.getString("prefSyncAvatar",
"1")));
// Clearing the input filed once message was sent
inputMsg.setText("");
}
});
listMessages = new ArrayList<Message>();
adapter = new MessagesListAdapter(this, listMessages, feedItems);
listViewMessages.setAdapter(adapter);
/**
* Creating web socket client. This will have callback methods
* */
client = new WebSocketClient(URI.create(WsConfig.URL_WEBSOCKET
+ URLEncoder.encode(name)), new WebSocketClient.Listener() {
#Override
public void onConnect() {
}
/**
* On receiving the message from web socket server
* */
#Override
public void onMessage(String message) {
Log.d(TAG, String.format("Got string message! %s", message));
parseMessage(message, superString);
// parseMessage(message,
// (sharedPrefs.getString("prefSyncAvatar", "1")));
}
#Override
public void onMessage(byte[] data) {
Log.d(TAG, String.format("Got binary message! %s",
bytesToHex(data)));
String hello = "99";
parseMessage(bytesToHex(data), superString);
// Message will be in JSON format
// parseMessage(bytesToHex(data),
// (sharedPrefs.getString("prefSyncAvatar", "1")));
}
/**
* Called when the connection is terminated
* */
#Override
public void onDisconnect(int code, String reason) {
String message = String.format(Locale.US,
"Disconnected! Code: %d Reason: %s", code, reason);
showToast(message);
//
// clear the session id from shared preferences
utils.storeSessionId(null);
}
#Override
public void onError(Exception error) {
Log.e(TAG, "Error! : " + error);
// showToast("Error! : " + error);
showToast("Are you sure you want to leave?");
}
}, null);
client.connect();
}
/**
* Method to send message to web socket server
* */
private void sendMessageToServer(String message, String id) {
if (client != null && client.isConnected()) {
client.send(message);
client.send(id);
}
}
/**
* Parsing the JSON message received from server The intent of message will
* be identified by JSON node 'flag'. flag = self, message belongs to the
* person. flag = new, a new person joined the conversation. flag = message,
* a new message received from server. flag = exit, somebody left the
* conversation.
* */
private void parseMessage(final String msg, String idINDEX) {
try {
jObj = new JSONObject(msg);
// JSON node 'flag'
String flag = jObj.getString("flag");
String id = idINDEX;
// if flag is 'self', this JSON contains session id
if (flag.equalsIgnoreCase(TAG_SELF)) {
String sessionId = jObj.getString("sessionId");
// Save the session id in shared preferences
utils.storeSessionId(sessionId);
Log.e(TAG, "Your session id: " + utils.getSessionId());
} else if (flag.equalsIgnoreCase(TAG_NEW)) {
// If the flag is 'new', new person joined the room
String name = jObj.getString("name");
String message = jObj.getString("message");
// number of people online
String onlineCount = jObj.getString("onlineCount");
showToast(name + message + ". Currently " + onlineCount
+ " people online!");
} else if (flag.equalsIgnoreCase(TAG_MESSAGE)) {
// if the flag is 'message', new message received
String fromName = name;
String message = jObj.getString("message");
String sessionId = jObj.getString("sessionId");
// switch (Integer.parseInt((sharedPrefs.getString(
// "prefSyncAvatar", "1"))))
boolean isSelf = true;
switch (Integer.parseInt(utils.getPictureId())) {
case 1:
profilePic = "http://clxxxii.vm-host.net/clxxxii/citychatlion.png";
break;
case 2:
profilePic = "http://clxxxii.vm-host.net/clxxxii/citychatmatt.png";
break;
case 3:
profilePic = "http://clxxxii.vm-host.net/clxxxii/citychatroboman.png";
break;
case 4:
profilePic = "http://clxxxii.vm-host.net/clxxxii/citychatalien.png";
break;
case 5:
profilePic = "http://clxxxii.vm-host.net/clxxxii/citychatkitty.png";
break;
case 10:
profilePic = "http://clxxxii.vm-host.net/clxxxii/citychatkitty.png";
break;
}
// Checking if the message was sent by you
if (!sessionId.equals(utils.getSessionId())) {
fromName = jObj.getString("name");
// profilePic = jObj.getString("profilePic");
//
//
//
//
jObj.getString("message");
isSelf = false;
profilePic = "http://clxxxii.vm-host.net/clxxxii/citychatalien.png";
}
// profilePic =
// "http://clxxxii.vm-host.net/clxxxii/citychatlion.png";
Integer.parseInt(utils.getPictureId());
String name = "clxxxii";
String image = "http://i.huffpost.com/gen/1716876/thumbs/o-ATLANTA-TRAFFIC-facebook.jpg";
String status = "status";
String timeStamp = "1403375851930";
String url = "url";
// Message m = new Message(fromName, message, isSelf);
Message m = new Message(fromName, message, isSelf, id, name,
image, status, profilePic, timeStamp, url);
// Appending the message to chat list
appendMessage(m);
} else if (flag.equalsIgnoreCase(TAG_EXIT)) {
// If the flag is 'exit', somebody left the conversation
String name = jObj.getString("name");
String message = jObj.getString("message");
showToast(name + message);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
///////// I've updated the socket server from the first project. /////// I've added the JSON value "id" successfully /// But I how do I change the value without having to type in "5" please see below..
//
This is the JSONutilty method I changed.
//
public String getSendAllMessageJson(String sessionId, String fromName,
String message, String photoId) {
String json = null;
try {
JSONObject jObj = new JSONObject();
jObj.put("flag", FLAG_MESSAGE);
jObj.put("sessionId", sessionId);
jObj.put("name", fromName);
jObj.put("message", message);
jObj.put("id", photoId);
json = jObj.toString();
} catch (JSONException e) {
e.printStackTrace();
}
return json;
}
}
This is the method that is being used by SocketServer. I can successfully send a message from this activity, to the utility method to send over the network.
// Normal chat conversation message
json = jsonUtils //
.getSendAllMessageJson(sessionId, name, message, "5");
How can I retrieve a value sent over the network to place in spot where I have "5" instead of hard coding it?
Thanks!!!
jobj doesn't have the value id. Example of the JSON object looks like this:
{
"message": " joined conversation!",
"flag": "new",
"sessionId": "4",
"name": "Ravi Tamada",
"onlineCount": 6
}
(as shown in the part1 of the same tutorial).
That solves the first issue of onlineCount and sessionId.
Thanks #miselking, you where correct, The server was missing the JSON string "id". To actually solve the problem of post.
"I want to send more than one "String" at a time to the server. I'm having trouble figuring that out."
This is how you do it.
Step 1)
Adding the string photoId to the method
public String getSendAllMessageJson(String sessionId, String fromName,
String message, String photoId) {
String json = null;
try {
JSONObject jObj = new JSONObject();
jObj.put("flag", FLAG_MESSAGE);
jObj.put("sessionId", sessionId);
jObj.put("name", fromName);
jObj.put("message", message);
jObj.put("id", photoId);
json = jObj.toString();
} catch (JSONException e) {
e.printStackTrace();
}
return json;
}
}
Step 2)
Add the string to the correct sting to the method.
String json = null;
json = jsonUtils
.getSendAllMessageJson(sessionId, name, message,
photoId);
Step 3) Parse the JSON
try {
JSONObject jObj = new JSONObject(message);
msg = jObj.getString("message");
photoId = jObj.getString("id");
} catch (JSONException e) {
e.printStackTrace();
}
Firstly, let me say I not a java programmer, I am a programmer on the IBM Iseries. However, I've been tasked with changing a current java application that currently sends a stream of data to one URL that will allow that same stream of data to be sent to multiple URLs based on a properties file. Our java app runs on the Iseries and we are using the org.apache.commons.httpclient.HttpClient class to send the data and the response is processed. Everything works great right now, but I wanted to see if anyone could point me in the right direction to complete this task.
Essentially, I need to send the same block of data to multiple URLs within the same thread or instance. I'm not sure if its possible or the best way to try to complete this. So, is there a way to create multiple instances within the same thread that will send the same data stream to multiple URLs? Before you start commenting I will say again that I am not a java programmer and I wasn't even sure how to phrase the question.
Added code sample:
public class Replication_CC implements TextProcessor {
public static String VERSION = "v2014.1.0";
static Logger log = Logger.getLogger(Replication_CC.class);
String url;
int retries = 1;
public Replication_CC(Properties p) {
super();
url = p.getProperty("url");
log.info("Service URL set to " + url);
retries = PropertiesUtil.getOptionalIntProperty(p, "retries", 1);
log.info("Retries set to " + retries);
}
public static void main(String[] args) throws Exception {
log.info("Replication " + VERSION);
log.info("Initializing...");
Properties p = PropertiesUtil.loadProperties(Replication_CC.class.getResource("/Replication_CC.properties"));
DQServer server = new DQServer(p, new Replication_CC(p));
server.run();
}
public String process(String request) throws Exception {
long processStart = System.currentTimeMillis();
String response = null;
for (int i=0; i<=retries; i++) {
try {
response = send(request, url);
if (response!=null) break;
}
catch (Exception e) {
log.warn("Error processing: " + e.getMessage());
if (i<retries) {
log.warn("Trying again (retry " + (i+1) + "...");
}
else {
log.error("Giving up on this transaction.");
break;
}
}
}
long processFinished = System.currentTimeMillis();
log.info("Request was processed in " + (processFinished-processStart) + "ms.");
return response;
}
public String send(String request, String url) throws Exception {
log.debug("Creating request...");
HttpClientParams params = new HttpClientParams();
params.setParameter("http.useragent", "http-api / Replication");
HttpClient client = new HttpClient(params);
PostMethod post = new PostMethod(url);
/*
List<NameValuePair> params = new ArrayList<NameValuePair>();
for (String key : globalRequest.keySet()) {
params.add(nvp(key, globalRequest.get(key)));
}
*/
post.setRequestBody(request);
// Log the request
if (log.isDebugEnabled()) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
post.getRequestEntity().writeRequest(baos);
baos.close();
log.debug("HTTP Request: \n" + StringUtils.repeat("*", 100) + "\n" + "Content Type: "
+ post.getRequestEntity().getContentType() + "\n" + "Content Length: "
+ post.getRequestEntity().getContentLength() + "\n" + "Request Headers: "
+ ArrayUtils.toString(post.getRequestHeaders()) + "\n" + "Request Params: " + baos.toString() + "\n" +
StringUtils.repeat("*", 100));
}
try {
log.info("Sending request...");
int responseCode = client.executeMethod(post);
//log.debug(String.format("Http Response Code [%s]", responseCode));
log.debug("Http Response Code [" + responseCode + "]");
if (responseCode == HttpStatus.SC_OK) {
String charset = post.getResponseCharSet();
log.debug("Response Character Set [" + charset + "]");
/*
byte[] body = post.getResponseBody();
String response = new String(body, charset);
*/
String response = IOUtils.toString(post.getResponseBodyAsStream());
log.debug("Response Body: \n" + response);
return response;
}
else {
throw new Exception(post.getStatusLine().toString());
}
}
catch (IOException ioe) {
log.error(ioe);
throw ioe;
}
finally {
post.releaseConnection();
}
}
One simple way is to include multiple URL's in the existing url property separated by a unique character. I chose "|" (pipe) in this example because it's highly unlikely to see a pipe in a normal url.
Java identifies methods by name and parameter signature. We can use that to our advantage by adding a String url parameter to the existing process method and creating a new process(String request) method that will split and iterate over the url's. The only downside is that it will only return the last response to the DQServer class.
public String process(String request) throws Exception {
String response;
for (String u : url.split("\\|")) {
response = process(request, u);
}
return response;
}
public String process(String request, String url) throws Exception {
long processStart = System.currentTimeMillis();
String response = null;
for (int i=0; i<=retries; i++) {
try {
response = send(request, url);
if (response!=null) break;
}
catch (Exception e) {
log.warn("Error processing: " + e.getMessage());
if (i<retries) {
log.warn("Trying again (retry " + (i+1) + "...");
}
else {
log.error("Giving up on this transaction.");
break;
}
}
}
long processFinished = System.currentTimeMillis();
log.info("Request was processed in " + (processFinished-processStart) + "ms.");
return response;
}
The complete sample is available on GitHub Gist.