I'm using an asynchronous request (because synchronous doesn't work correctly with this API), the OkHttp3 library. Inside the request, I get a response in the form of JSON. I need to somehow pass values from Json to a class variable. I decided to try it this way, but it doesn't work.
public String sessionId = null;
...
public QRcodeReader() throws Exception {
this.sessionId = null;
}
... // between this code I have 1 function, which reg my number.
// in this func I need to confirm my phone by code in SMS.
public void SmsCode(String Code) // String get from another class
{
SmsJson smsJson = new SmsJson("*phoneNumber*", "*secret_key*", "*os*", Code);
Gson gson = new GsonBuilder().disableHtmlEscaping().create();
RequestBody body = RequestBody.create(
MediaType.parse("application/json"), gson.toJson(smsJson));
Request request = new Request.Builder()
.url("https://irkkt-mobile.nalog.ru:8888/v2/auth/phone/verify")
.addHeader("Host", HOST)
.addHeader("Accept", ACCEPT)
.addHeader("Device-OS", DEVICE_OS)
.addHeader("Device-ID", DEVICE_ID)
.addHeader("clientVersion", CLIENT_VERSION)
.addHeader("Accept-Language", ACCEPT_LANGUAGE)
.addHeader("User-Agent", USER_AGENT)
.post(body)
.build();
httpClient.newCall(request).enqueue(new Callback() {
#Override
public void onResponse(#NonNull Call call, #NonNull Response response) throws IOException {
try (Response responseBody = httpClient.newCall(request).execute()) {
if (!responseBody.isSuccessful())
throw new IOException("Unexpected code " + responseBody);
// Here I try to transfer data from request to class variable. Not Work.
SetSessionId(Objects.requireNonNull(responseBody.body()).string());
System.out.println(Objects.requireNonNull(responseBody.body()).string());
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
});
}
void SetSessionId(String sessionId){
this.sessionId = sessionId;
}
I need to use SessionID further along here:
public String GetTicketID(String QR){
TicketID ticketID = new TicketID(QR);
Gson gson = new GsonBuilder().disableHtmlEscaping().create();
RequestBody body = RequestBody.create(
MediaType.parse("application/json"), gson.toJson(ticketID));
Request request = new Request.Builder()
.url("https://irkkt-mobile.nalog.ru:8888/v2/ticket")
.addHeader("Host", HOST)
.addHeader("Accept", ACCEPT)
.addHeader("Device-OS", DEVICE_OS)
.addHeader("Device-ID", DEVICE_ID)
.addHeader("clientVersion", CLIENT_VERSION)
.addHeader("Accept-Language", ACCEPT_LANGUAGE)
.addHeader("User-Agent", USER_AGENT)
.addHeader("sessionId", sessionId) // Here I get NULL and exception!
.post(body)
.build();
httpClient.newCall(request).enqueue(new Callback() {
#Override
public void onResponse(Call call, Response response) throws IOException {
try (Response responseBody = httpClient.newCall(request).execute()) {
if (!responseBody.isSuccessful())
throw new IOException("Unexpected code " + responseBody);
System.out.println(Objects.requireNonNull(responseBody.body()).string());
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
});
return ""; // Here I need to transfer id to another variable, not did it yet.
}
The problem is that SessionID = Null and the request does not work.
I think I'm doing something wrong, but I can't figure out what. May be it is because async request..
I wrote a method that gets JSON, converts an object to java and writes JSON to a file.But writing to the file just does not work. Tell me what could be the reason?
public class ApiUtils {
public static HttpClient client = HttpClient.newHttpClient();
public static void getRequest(String url, String path) {
PostDTO postDTO = new PostDTO();
String pathJSONFile = "src/main/resources/Post.json";
List<PostPojo> postPojos = null;
HttpRequest request = HttpRequest.newBuilder()
.GET()
.header("accept", "application/json")
.uri(URI.create(url + path))
.build();
try {
HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
ObjectMapper objectMapper = new ObjectMapper();
postPojos = objectMapper.readValue(response.body(), new TypeReference<List<PostPojo>>() {
});
objectMapper.writeValue(Paths.get("allPost.json").toFile(), response.body());
postDTO.setStatus(response.statusCode());
postDTO.setPosts(postPojos);
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(postDTO);
}
}
File allPost.json located in the folder resources.
You're writing the wrong object I think - your code sample says
objectMapper.writeValue(Paths.get("allPost.json").toFile(), response.body());
which is trying to write the InputStream of response.body(). I presume you meant to try and write out postPojos via
objectMapper.writeValue(Paths.get("allPost.json").toFile(), postPojos);
instead.
I'm trying to make a request and get the json response to a json string but every time i execute this it gives me an exception. Please help me.
public String login(String json) throws IOException {
OkHttpClient client = new OkHttpClient();
Gson gson = new Gson();
Agent agent = gson.fromJson(json, Agent.class);
json = gson.toJson(agent, Agent.class);
String url = "http://laravel-zona-azul.herokuapp.com/api/v1/login";
Request.Builder builder = new Request.Builder();
builder.url(url);
MediaType mediaType =
MediaType.parse("application/json; charset=utf-8");
RequestBody body = RequestBody.create(mediaType, json);
builder.post(body)
.addHeader("login", agent.login)
.addHeader("cache-control", agent.password);
Log.d("MYAPP", "Body: " + body);
Request request = builder.build();
try{
Response response = client.newCall(request).execute();
return response.body().string();
}
catch (IOException e){
e.printStackTrace();
}
return "";
}
Use this it's working fine for me.
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 != null)
try {
response.body().string();
} catch (IOException e) {
e.printStackTrace();
}
}
});
Instead of Using this
try{
Response response = client.newCall(request).execute();
return response.body().string();
}
catch (IOException e){
e.printStackTrace();
}
I read some examples which are posting jsons to the server.
some one says :
OkHttp is an implementation of the HttpUrlConnection interface
provided by Java. It provides an input stream for writing content and
doesn't know (or care) about what format that content is.
Now I want to make a normal post to the URL with params of name and password.
It means I need to do encode the name and value pair into stream by myself?
As per the docs, OkHttp version 3 replaced FormEncodingBuilder with FormBody and FormBody.Builder(), so the old examples won't work anymore.
Form and Multipart bodies are now modeled. We've replaced the opaque
FormEncodingBuilder with the more powerful FormBody and
FormBody.Builder combo.
Similarly we've upgraded MultipartBuilder into
MultipartBody, MultipartBody.Part, and MultipartBody.Builder.
So if you're using OkHttp 3.x try the following example:
OkHttpClient client = new OkHttpClient();
RequestBody formBody = new FormBody.Builder()
.add("message", "Your message")
.build();
Request request = new Request.Builder()
.url("https://www.example.com/index.php")
.post(formBody)
.build();
try {
Response response = client.newCall(request).execute();
// Do something with the response.
} catch (IOException e) {
e.printStackTrace();
}
The current accepted answer is out of date. Now if you want to create a post request and add parameters to it you should user MultipartBody.Builder as Mime Craft now is deprecated.
RequestBody requestBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("somParam", "someValue")
.build();
Request request = new Request.Builder()
.url(BASE_URL + route)
.post(requestBody)
.build();
private final OkHttpClient client = new OkHttpClient();
public void run() throws Exception {
RequestBody formBody = new FormEncodingBuilder()
.add("search", "Jurassic Park")
.build();
Request request = new Request.Builder()
.url("https://en.wikipedia.org/w/index.php")
.post(formBody)
.build();
Response response = client.newCall(request).execute();
if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);
System.out.println(response.body().string());
}
You need to encode it yourself by escaping strings with URLEncoder and joining them with "=" and "&". Or you can use FormEncoder from Mimecraft which gives you a handy builder.
FormEncoding fe = new FormEncoding.Builder()
.add("name", "Lorem Ipsum")
.add("occupation", "Filler Text")
.build();
You can make it like this:
MediaType JSON = MediaType.parse("application/json; charset=utf-8");
RequestBody body = RequestBody.create(JSON, "{"jsonExample":"value"}");
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(url)
.post(body)
.addHeader("Authorization", "header value") //Notice this request has header if you don't need to send a header just erase this part
.build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
#Override
public void onFailure(Request request, IOException e) {
Log.e("HttpService", "onFailure() Request was: " + request);
e.printStackTrace();
}
#Override
public void onResponse(Response r) throws IOException {
response = r.body().string();
Log.e("response ", "onResponse(): " + response );
}
});
OkHttp POST request with token in header
RequestBody requestBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("search", "a")
.addFormDataPart("model", "1")
.addFormDataPart("in", "1")
.addFormDataPart("id", "1")
.build();
OkHttpClient client = new OkHttpClient();
okhttp3.Request request = new okhttp3.Request.Builder()
.url("https://somedomain.com/api")
.post(requestBody)
.addHeader("token", "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiIkMnkkMTAkZzZrLkwySlFCZlBmN1RTb3g3bmNpTzltcVwvemRVN2JtVC42SXN0SFZtbzZHNlFNSkZRWWRlIiwic3ViIjo0NSwiaWF0IjoxNTUwODk4NDc0LCJleHAiOjE1NTM0OTA0NzR9.tefIaPzefLftE7q0yKI8O87XXATwowEUk_XkAOOQzfw")
.addHeader("cache-control", "no-cache")
.addHeader("Postman-Token", "7e231ef9-5236-40d1-a28f-e5986f936877")
.build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
#Override
public void onResponse(Call call, okhttp3.Response response) throws IOException {
if (response.isSuccessful()) {
final String myResponse = response.body().string();
MainActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
Log.d("response", myResponse);
progress.hide();
}
});
}
}
});
To add okhttp as a dependency do as follows
right click on the app on android studio open "module settings"
"dependencies"-> "add library dependency" -> "com.squareup.okhttp3:okhttp:3.10.0" -> add -> ok..
now you have okhttp as a dependency
Now design a interface as below so we can have the callback to our activity once the network response received.
public interface NetworkCallback {
public void getResponse(String res);
}
I create a class named NetworkTask so i can use this class to handle all the network requests
public class NetworkTask extends AsyncTask<String , String, String>{
public NetworkCallback instance;
public String url ;
public String json;
public int task ;
OkHttpClient client = new OkHttpClient();
public static final MediaType JSON
= MediaType.parse("application/json; charset=utf-8");
public NetworkTask(){
}
public NetworkTask(NetworkCallback ins, String url, String json, int task){
this.instance = ins;
this.url = url;
this.json = json;
this.task = task;
}
public String doGetRequest() throws IOException {
Request request = new Request.Builder()
.url(url)
.build();
Response response = client.newCall(request).execute();
return response.body().string();
}
public String doPostRequest() throws IOException {
RequestBody body = RequestBody.create(JSON, json);
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
Response response = client.newCall(request).execute();
return response.body().string();
}
#Override
protected String doInBackground(String[] params) {
try {
String response = "";
switch(task){
case 1 :
response = doGetRequest();
break;
case 2:
response = doPostRequest();
break;
}
return response;
}catch (Exception e){
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
instance.getResponse(s);
}
}
now let me show how to get the callback to an activity
public class MainActivity extends AppCompatActivity implements NetworkCallback{
String postUrl = "http://your-post-url-goes-here";
String getUrl = "http://your-get-url-goes-here";
Button doGetRq;
Button doPostRq;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button = findViewById(R.id.button);
doGetRq = findViewById(R.id.button2);
doPostRq = findViewById(R.id.button1);
doPostRq.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
MainActivity.this.sendPostRq();
}
});
doGetRq.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
MainActivity.this.sendGetRq();
}
});
}
public void sendPostRq(){
JSONObject jo = new JSONObject();
try {
jo.put("email", "yourmail");
jo.put("password","password");
} catch (JSONException e) {
e.printStackTrace();
}
// 2 because post rq is for the case 2
NetworkTask t = new NetworkTask(this, postUrl, jo.toString(), 2);
t.execute(postUrl);
}
public void sendGetRq(){
// 1 because get rq is for the case 1
NetworkTask t = new NetworkTask(this, getUrl, jo.toString(), 1);
t.execute(getUrl);
}
#Override
public void getResponse(String res) {
// here is the response from NetworkTask class
System.out.println(res)
}
}
This is one of the possible solutions to implementing an OKHTTP post request without a request body.
RequestBody reqbody = RequestBody.create(null, new byte[0]);
Request.Builder formBody = new Request.Builder().url(url).method("POST",reqbody).header("Content-Length", "0");
clientOk.newCall(formBody.build()).enqueue(OkHttpCallBack());
You should check tutorials on lynda.com. Here is an example of how to encode the parameters, make HTTP request and then parse response to json object.
public JSONObject getJSONFromUrl(String str_url, List<NameValuePair> params) {
String reply_str = null;
BufferedReader reader = null;
try {
URL url = new URL(str_url);
OkHttpClient client = new OkHttpClient();
HttpURLConnection con = client.open(url);
con.setDoOutput(true);
OutputStreamWriter writer = new OutputStreamWriter(con.getOutputStream());
writer.write(getEncodedParams(params));
writer.flush();
StringBuilder sb = new StringBuilder();
reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
reply_str = sb.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}
// try parse the string to a JSON object. There are better ways to parse data.
try {
jObj = new JSONObject(reply_str);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
return jObj;
}
//in this case it's NameValuePair, but you can use any container
public String getEncodedParams(List<NameValuePair> params) {
StringBuilder sb = new StringBuilder();
for (NameValuePair nvp : params) {
String key = nvp.getName();
String param_value = nvp.getValue();
String value = null;
try {
value = URLEncoder.encode(param_value, "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
if (sb.length() > 0) {
sb.append("&");
}
sb.append(key + "=" + value);
}
return sb.toString();
}
protected Void doInBackground(String... movieIds) {
for (; count <= 1; count++) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
Resources res = getResources();
String web_link = res.getString(R.string.website);
OkHttpClient client = new OkHttpClient();
RequestBody formBody = new FormBody.Builder()
.add("name", name)
.add("bsname", bsname)
.add("email", email)
.add("phone", phone)
.add("whatsapp", wapp)
.add("location", location)
.add("country", country)
.add("state", state)
.add("city", city)
.add("zip", zip)
.add("fb", fb)
.add("tw", tw)
.add("in", in)
.add("age", age)
.add("gender", gender)
.add("image", encodeimg)
.add("uid", user_id)
.build();
Request request = new Request.Builder()
.url(web_link+"edit_profile.php")
.post(formBody)
.build();
try {
Response response = client.newCall(request).execute();
JSONArray array = new JSONArray(response.body().string());
JSONObject object = array.getJSONObject(0);
hashMap.put("msg",object.getString("msgtype"));
hashMap.put("msg",object.getString("msg"));
// Do something with the response.
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
Here is my method to do post request
first pass in method map and data like
HashMap<String, String> param = new HashMap<String, String>();
param.put("Name", name);
param.put("Email", email);
param.put("Password", password);
param.put("Img_Name", "");
final JSONObject result = doPostRequest(map,Url);
public static JSONObject doPostRequest(HashMap<String, String> data, String url) {
try {
RequestBody requestBody;
MultipartBuilder mBuilder = new MultipartBuilder().type(MultipartBuilder.FORM);
if (data != null) {
for (String key : data.keySet()) {
String value = data.get(key);
Utility.printLog("Key Values", key + "-----------------" + value);
mBuilder.addFormDataPart(key, value);
}
} else {
mBuilder.addFormDataPart("temp", "temp");
}
requestBody = mBuilder.build();
Request request = new Request.Builder()
.url(url)
.post(requestBody)
.build();
OkHttpClient client = new OkHttpClient();
Response response = client.newCall(request).execute();
String responseBody = response.body().string();
Utility.printLog("URL", url);
Utility.printLog("Response", responseBody);
return new JSONObject(responseBody);
} catch (UnknownHostException | UnsupportedEncodingException e) {
JSONObject jsonObject=new JSONObject();
try {
jsonObject.put("status","false");
jsonObject.put("message",e.getLocalizedMessage());
} catch (JSONException e1) {
e1.printStackTrace();
}
Log.e(TAG, "Error: " + e.getLocalizedMessage());
} catch (Exception e) {
e.printStackTrace();
JSONObject jsonObject=new JSONObject();
try {
jsonObject.put("status","false");
jsonObject.put("message",e.getLocalizedMessage());
} catch (JSONException e1) {
e1.printStackTrace();
}
Log.e(TAG, "Other Error: " + e.getLocalizedMessage());
}
return null;
}
Add the following to the build.gradle
compile 'com.squareup.okhttp3:okhttp:3.7.0'
Create a new thread, in the new thread add the following code.
OkHttpClient client = new OkHttpClient();
MediaType MIMEType= MediaType.parse("application/json; charset=utf-8");
RequestBody requestBody = RequestBody.create (MIMEType,"{}");
Request request = new Request.Builder().url(url).post(requestBody).build();
Response response = client.newCall(request).execute();
As for Kotlin in 2022 (POST request) works:
val client = OkHttpClient()
val formBody: RequestBody = MultipartBody.Builder()
.addFormDataPart("phone", editText1.text.toString())
.addFormDataPart("email", editText2.text.toString())
.build()
val request: Request = Request.Builder()
.url("https://hellokitty.com/users")
.post(formBody)
.build()
try {
// Do something with the response.
val response = client.newCall(request).enqueue(object : Callback {
override fun onFailure(call: Call, e: okio.IOException) {
print(e.message)
}
override fun onResponse(call: Call, response: Response) {
print(response.message)
print("XXX \n" + response.body)
}
})
editTextResponse.text = response.toString()
} catch (e: java.io.IOException) {
editTextResponse.text = e.toString()
e.printStackTrace()
}
Gradle:
implementation("com.squareup.okhttp3:okhttp:5.0.0-alpha.6")
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.jaskierltd.blablaApp">
<uses-permission android:name="android.permission.INTERNET"/>
...
If you want to post parameter in okhttp as body content which can be encrypted string with content-type as "application/x-www-form-urlencoded" you can first use URLEncoder to encode the data and then use :
final MediaType MEDIA_TYPE_MARKDOWN = MediaType.parse("application/x-www-form-urlencoded");
okhttp3.Request request = new okhttp3.Request.Builder()
.url(urlOfServer)
.post(RequestBody.create(MEDIA_TYPE_MARKDOWN, yourBodyDataToPostOnserver))
.build();
you can add header according to your requirement.
public static JSONObject doPostRequestWithSingleFile(String url,HashMap<String, String> data, File file,String fileParam) {
try {
final MediaType MEDIA_TYPE_PNG = MediaType.parse("image/png");
RequestBody requestBody;
MultipartBuilder mBuilder = new MultipartBuilder().type(MultipartBuilder.FORM);
for (String key : data.keySet()) {
String value = data.get(key);
Utility.printLog("Key Values", key + "-----------------" + value);
mBuilder.addFormDataPart(key, value);
}
if(file!=null) {
Log.e("File Name", file.getName() + "===========");
if (file.exists()) {
mBuilder.addFormDataPart(fileParam, file.getName(), RequestBody.create(MEDIA_TYPE_PNG, file));
}
}
requestBody = mBuilder.build();
Request request = new Request.Builder()
.url(url)
.post(requestBody)
.build();
OkHttpClient client = new OkHttpClient();
Response response = client.newCall(request).execute();
String result=response.body().string();
Utility.printLog("Response",result+"");
return new JSONObject(result);
} catch (UnknownHostException | UnsupportedEncodingException e) {
Log.e(TAG, "Error: " + e.getLocalizedMessage());
JSONObject jsonObject=new JSONObject();
try {
jsonObject.put("status","false");
jsonObject.put("message",e.getLocalizedMessage());
} catch (JSONException e1) {
e1.printStackTrace();
}
} catch (Exception e) {
Log.e(TAG, "Other Error: " + e.getMessage());
JSONObject jsonObject=new JSONObject();
try {
jsonObject.put("status","false");
jsonObject.put("message",e.getLocalizedMessage());
} catch (JSONException e1) {
e1.printStackTrace();
}
}
return null;
}
public static JSONObject doGetRequest(HashMap<String, String> param,String url) {
JSONObject result = null;
String response;
Set keys = param.keySet();
int count = 0;
for (Iterator i = keys.iterator(); i.hasNext(); ) {
count++;
String key = (String) i.next();
String value = (String) param.get(key);
if (count == param.size()) {
Log.e("Key",key+"");
Log.e("Value",value+"");
url += key + "=" + URLEncoder.encode(value);
} else {
Log.e("Key",key+"");
Log.e("Value",value+"");
url += key + "=" + URLEncoder.encode(value) + "&";
}
}
/*
try {
url= URLEncoder.encode(url, "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}*/
Log.e("URL", url);
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(url)
.build();
Response responseClient = null;
try {
responseClient = client.newCall(request).execute();
response = responseClient.body().string();
result = new JSONObject(response);
Log.e("response", response+"==============");
} catch (Exception e) {
JSONObject jsonObject=new JSONObject();
try {
jsonObject.put("status","false");
jsonObject.put("message",e.getLocalizedMessage());
return jsonObject;
} catch (JSONException e1) {
e1.printStackTrace();
}
e.printStackTrace();
}
return result;
}