How to use OKHTTP to make a post request?

How to use OKHTTP to make a post request? - java

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The current accepted answer is out of date.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;
}

Related

How to post form.body in JSONArray using OkHttp?

Hi guys I was trying to post a JSONArray using OkHttp. I want to do like this:
[
{
"name": "john"
},
{
"food": "burger"
}
]
Can anyone help me out?

You can try adding a JSONObject in an array and then pass it to your JSONArray.
Something like this:
JSONArray list = new JSONArray();
JSONObject js = new JSONObject();
try {
js.put("name", "john");
} catch (JSONException e) {
e.printStackTrace();
}
list.put(js);
js = new JSONObject();
try {
js.put("food", "burger");
} catch (JSONException e) {
e.printStackTrace();
}
list.put(js);
Log.e(TAG, "found json array " + list);
and if you have more items, then run the `js' in a loop until you are done with it.

Something like this:
public void sendRequest(String route) {
OkHttpClient client = new OkHttpClient();
String url = baseUrl + route;
RequestBody requestBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("username", String.valueOf(username.getText()))
.addFormDataPart("password", String.valueOf(password.getText()))
.build();
Request request = new Request.Builder()
.url(url)
.post(requestBody)
.build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
Log.d("Error", "Something Went Wrong");
}
#Override
public void onResponse(Call call, Response response) throws IOException {
if (response.isSuccessful()) {
String myresponse = response.body().string();
try {
JSONArray all = new JSONArray(myresponse);
// Do whatever
} catch (JSONException e) {
e.printStackTrace();
}
} else {
String errorBodyString = response.body().string();
Log.d("Error", errorBodyString);
}
}
});
}

How can i send my recoding file on server with okhttp

I am setting up a new file path but I don't why the file is not getting upload
OkHttpClient client = new OkHttpClient();
MediaType JSON = MediaType.parse("application/json; charset=utf-8");
JSONObject jsonObject = new JSONObject();
try {
jsonObject.put("user_id", "1");
jsonObject.put("file", new File(String.valueOf(new File("/storage/emulated/0/Betyphon/Record_incoming_+919990925305_6242392740563898375.mp4"))));
jsonObject.put("file_name", "Record_incoming_+919990925305_6242392740563898375");
jsonObject.put("creation_datetime", "2019-05-27T10:04:16.040757Z");
} catch (JSONException e) {
e.printStackTrace();
}
RequestBody body = RequestBody.create(JSON, jsonObject.toString());
Request request = new Request.Builder()
.url("http://159.65.145.32/api/file/upload/")
.post(body)
.build();
// Response response = client.newCall(request).execute();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
#Override
public void onResponse(Call call, final Response response) throws IOException {
if (!response.isSuccessful()) {
throw new IOException("Unexpected code " + response);
} else {
String json = response.body().string();
System.out.println("File Uploading" + json);
}
}
});
I want to upload my recording file on the server i tried many way to do it but i can't

Okhttp exception

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();
}

Android Check for response HTTP

I am using OKHTTP to make api calls and I realize I can use .enque for async calls and .execute for sync calls.
is there a callback to check whether the response has been received without breaking the UI or the flow of the application.
I am using the following code:
public void getItems() {
new Thread(new Runnable() {
#Override
public void run() {
OkHttpClient client = new OkHttpClient();
String url = "https://beta-pp-api.polkadoc.com/v1.0/products?category=CP&available_via=mail_order";
{
Request request = new Request.Builder()
.url(url)
.addHeader("Authorization", token)
.addHeader("Content-Type", "application/json")
.addHeader("Accept", "application/json")
.addHeader("X-Service-Code", "PP")
.get()
.build();
try {
Response response = client.newCall(request).execute();
groupList=getPills(response);
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}).start();
for getPills
public ArrayList<Group> getPills(Response response) throws JSONException {
try
{
jsonArray = new JSONArray(response.body().string());
}
catch (IOException e)
{
e.printStackTrace();
}
ArrayList<Child> childList;
ArrayList<Group> groupList = new ArrayList<Group>();
if (jsonArray != null) {
for (int i = 0; i < jsonArray.length(); i++) {
Group group = new Group();
JSONObject jsonObject = jsonArray.getJSONObject(i);
group.setPillName((String) jsonObject.get("title"));
id = jsonObject.get("id").toString();
//second api call
getPillInfo(id);
try {
JSONObject NewJSONObject = new JSONObject(secondResponse.body().string());
group.setSamePillAsData((String) NewJSONObject.getJSONObject("details").get("same_as"));
group.setPillType((String) NewJSONObject.getJSONObject("details").get("pill_type_short"));
childList = new ArrayList<Child>();
Child child = new Child();
child.setSideEffectData((String) NewJSONObject.getJSONObject("details").get("side_effects_short"));
child.setPriceData((String) NewJSONObject.getJSONObject("details").get("cost_short"));
child.setPillChoiceData((String) NewJSONObject.getJSONObject("details").get("criteria_short"));
childList.add(child);
group.setItems(childList);
groupList.add(group);
}
catch (IOException e) {
e.printStackTrace();
}
}
}
return groupList;
}
for get pillInfo():
public void getPillInfo(String id) {
OkHttpClient client = new OkHttpClient();
String url = "https://beta-pp-api.polkadoc.com/v1.0/products/" + id;
Request request = new Request.Builder()
.url(url)
.addHeader("Authorization", token)
.addHeader("Content-Type", "application/json")
.addHeader("Accept", "application/json")
.addHeader("X-Service-Code", "PP")
.get()
.build();
try {
secondResponse = client.newCall(request).execute();
} catch (IOException e) {
e.printStackTrace();
}
}
}
My UI is breaking everytime. What is going on?

Android GET and POST Request

Can anyone point me to a good implementation of a way to send GET and POST Requests. They are alot of ways to do these, and i am looking for the best implementation. Secondly is there a generic way to send both these methods rather then using two different ways. After all the GET method merely has the params in the Query Strings, whereas the POST method uses the headers for the Params.
Thanks.

You can use the HttpURLConnection class (in java.net) to send a POST or GET HTTP request. It is the same as any other application that might want to send an HTTP request. The code to send an Http Request would look like this:
import java.net.*;
import java.io.*;
public class SendPostRequest {
public static void main(String[] args) throws MalformedURLException, IOException {
URL reqURL = new URL("http://www.stackoverflow.com/"); //the URL we will send the request to
HttpURLConnection request = (HttpURLConnection) (reqUrl.openConnection());
String post = "this will be the post data that you will send"
request.setDoOutput(true);
request.addRequestProperty("Content-Length", Integer.toString(post.length)); //add the content length of the post data
request.addRequestProperty("Content-Type", "application/x-www-form-urlencoded"); //add the content type of the request, most post data is of this type
request.setMethod("POST");
request.connect();
OutputStreamWriter writer = new OutputStreamWriter(request.getOutputStream()); //we will write our request data here
writer.write(post);
writer.flush();
}
}
A GET request will look a little bit different, but much of the code is the same. You don't have to worry about doing output with streams or specifying the content-length or content-type:
import java.net.*;
import java.io.*;
public class SendPostRequest {
public static void main(String[] args) throws MalformedURLException, IOException {
URL reqURL = new URL("http://www.stackoverflow.com/"); //the URL we will send the request to
HttpURLConnection request = (HttpURLConnection) (reqUrl.openConnection());
request.setMethod("GET");
request.connect();
}
}

I prefer using dedicated class to do GET/POST and any HTTP connections or requests.
Moreover I use HttpClient to execute these GET/POST methods.
Below is sample from my project. I needed thread-safe execution so there is ThreadSafeClientConnManager.
There is an example of using GET (fetchData) and POST (sendOrder)
As you can see execute is general method for executing HttpUriRequest - it can be POST or GET.
public final class ClientHttpClient {
private static DefaultHttpClient client;
private static CookieStore cookieStore;
private static HttpContext httpContext;
static {
cookieStore = new BasicCookieStore();
httpContext = new BasicHttpContext();
httpContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);
client = getThreadSafeClient();
HttpParams params = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(params, AppConstants.CONNECTION_TIMEOUT);
HttpConnectionParams.setSoTimeout(params, AppConstants.SOCKET_TIMEOUT);
client.setParams(params);
}
private static DefaultHttpClient getThreadSafeClient() {
DefaultHttpClient client = new DefaultHttpClient();
ClientConnectionManager mgr = client.getConnectionManager();
HttpParams params = client.getParams();
client = new DefaultHttpClient(new ThreadSafeClientConnManager(params, mgr.getSchemeRegistry()),
params);
return client;
}
private ClientHttpClient() {
}
public static String execute(HttpUriRequest http) throws IOException {
BufferedReader reader = null;
try {
StringBuilder builder = new StringBuilder();
HttpResponse response = client.execute(http, httpContext);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
HttpEntity entity = response.getEntity();
InputStream content = entity.getContent();
reader = new BufferedReader(new InputStreamReader(content, CHARSET));
String line = null;
while((line = reader.readLine()) != null) {
builder.append(line);
}
if(statusCode != 200) {
throw new IOException("statusCode=" + statusCode + ", " + http.getURI().toASCIIString()
+ ", " + builder.toString());
}
return builder.toString();
}
finally {
if(reader != null) {
reader.close();
}
}
}
public static List<OverlayItem> fetchData(Info info) throws JSONException, IOException {
List<OverlayItem> out = new LinkedList<OverlayItem>();
HttpGet request = buildFetchHttp(info);
String json = execute(request);
if(json.trim().length() <= 2) {
return out;
}
try {
JSONObject responseJSON = new JSONObject(json);
if(responseJSON.has("auth_error")) {
throw new IOException("auth_error");
}
}
catch(JSONException e) {
//ok there was no error, because response is JSONArray - not JSONObject
}
JSONArray jsonArray = new JSONArray(json);
for(int i = 0; i < jsonArray.length(); i++) {
JSONObject chunk = jsonArray.getJSONObject(i);
ChunkParser parser = new ChunkParser(chunk);
if(!parser.hasErrors()) {
out.add(parser.parse());
}
}
return out;
}
private static HttpGet buildFetchHttp(Info info) throws UnsupportedEncodingException {
StringBuilder builder = new StringBuilder();
builder.append(FETCH_TAXIS_URL);
builder.append("?minLat=" + URLEncoder.encode("" + mapBounds.getMinLatitude(), ENCODING));
builder.append("&maxLat=" + URLEncoder.encode("" + mapBounds.getMaxLatitude(), ENCODING));
builder.append("&minLon=" + URLEncoder.encode("" + mapBounds.getMinLongitude(), ENCODING));
builder.append("&maxLon=" + URLEncoder.encode("" + mapBounds.getMaxLongitude(), ENCODING));
HttpGet get = new HttpGet(builder.toString());
return get;
}
public static int sendOrder(OrderInfo info) throws IOException {
HttpPost post = new HttpPost(SEND_ORDER_URL);
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
nameValuePairs.add(new BasicNameValuePair("id", "" + info.getTaxi().getId()));
nameValuePairs.add(new BasicNameValuePair("address", info.getAddressText()));
nameValuePairs.add(new BasicNameValuePair("name", info.getName()));
nameValuePairs.add(new BasicNameValuePair("surname", info.getSurname()));
nameValuePairs.add(new BasicNameValuePair("phone", info.getPhoneNumber()));
nameValuePairs.add(new BasicNameValuePair("passengers", "" + info.getPassengers()));
nameValuePairs.add(new BasicNameValuePair("additionalDetails", info.getAdditionalDetails()));
nameValuePairs.add(new BasicNameValuePair("lat", "" + info.getOrderLocation().getLatitudeE6()));
nameValuePairs.add(new BasicNameValuePair("lon", "" + info.getOrderLocation().getLongitudeE6()));
post.setEntity(new UrlEncodedFormEntity(nameValuePairs));
String response = execute(post);
if(response == null || response.trim().length() == 0) {
throw new IOException("sendOrder_response_empty");
}
try {
JSONObject json = new JSONObject(response);
int orderId = json.getInt("orderId");
return orderId;
}
catch(JSONException e) {
throw new IOException("sendOrder_parsing: " + response);
}
}
EDIT
The execute method is public because sometimes I use custom (or dynamic) GET/POST requests.
If you have URL object you can pass to execute method:
HttpGet request = new HttpGet(url.toString());
execute(request);

As you said: the GET-Parameters are in the URL - So you can use a loadUrl() on your Webview to send them.
[..].loadUrl("http://www.example.com/data.php?param1=value1&param2=value2&...");

The developer training docs have a good example on GET requests. You're responsible for adding the query parameters to the URL.
Post is similar, but as you said, quite different. The HttpConnectionURLConnection class can do both, and it's easy to just set the post body with an output stream.

protected String doInBackground(String... strings) {
String response = null;
String data = null;
try {
data = URLEncoder.encode("CustomerEmail", "UTF-8")
+ "=" + URLEncoder.encode(username, "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
String url = Constant.URL_FORGOT_PASSWORD;// this is url
response = ServiceHandler.postData(url,data);
if (response.equals("")){
return response;
}else {
return response;
}
}
public static String postData(String urlpath,String data){
String text = "";
BufferedReader reader=null;
try
{
// Defined URL where to send data
URL url = new URL(urlpath);
// Send POST data request
URLConnection conn = url.openConnection();
conn.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write( data );
wr.flush();
// Get the server response
reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
// Read Server Response
while((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
text = sb.toString();
return text;
}
catch(Exception ex)
{
}
finally
{
try
{
reader.close();
}
catch(Exception ex) {}
}
return text;
}

private RequestListener listener;
private int requestId;
private HashMap<String, String> reqParams;
private File file;
private String fileName;
private RequestMethod reqMethod;
private String url;
private Context context;
private boolean isProgressVisible = false;
private MyProgressDialog progressDialog;
public NetworkClient(Context context, int requestId, RequestListener listener,
String url, HashMap<String, String> reqParams, RequestMethod reqMethod,
boolean isProgressVisible) {
this.listener = listener;
this.requestId = requestId;
this.reqParams = reqParams;
this.reqMethod = reqMethod;
this.url = url;
this.context = context;
this.isProgressVisible = isProgressVisible;
}
public NetworkClient(Context context, int requestId, RequestListener listener,
String url, HashMap<String, String> reqParams, File file, String fileName, RequestMethod reqMethod,
boolean isProgressVisible) {
this.listener = listener;
this.requestId = requestId;
this.reqParams = reqParams;
this.file = file;
this.fileName = fileName;
this.reqMethod = reqMethod;
this.url = url;
this.context = context;
this.isProgressVisible = isProgressVisible;
}
#Override
protected void onPreExecute() {
super.onPreExecute();
if (isProgressVisible) {
showProgressDialog();
}
}
#Override
protected String doInBackground(Void... params) {
try {
if (Utils.isInternetAvailable(context)) {
OkHttpClient.Builder clientBuilder = new OkHttpClient.Builder();
clientBuilder.connectTimeout(10, TimeUnit.SECONDS);
clientBuilder.writeTimeout(10, TimeUnit.SECONDS);
clientBuilder.readTimeout(20, TimeUnit.SECONDS);
OkHttpClient client = clientBuilder.build();
if (reqMethod == RequestMethod.GET) {
Request.Builder reqBuilder = new Request.Builder();
reqBuilder.url(url);
Request request = reqBuilder.build();
Response response = client.newCall(request).execute();
String message = response.message();
String res = response.body().string();
JSONObject jObj = new JSONObject();
jObj.put("statusCode", 1);
jObj.put("response", message);
return jObj.toString();
} else if (reqMethod == RequestMethod.POST) {
FormBody.Builder formBuilder = new FormBody.Builder();
RequestBody body = formBuilder.build();
Request.Builder reqBuilder = new Request.Builder();
reqBuilder.url(url);
reqBuilder.post(body);
Request request = reqBuilder.build();
Response response = client.newCall(request).execute();
String res = response.body().string();
JSONObject jObj = new JSONObject();
jObj.put("statusCode", 1);
jObj.put("response", res);
return jObj.toString();
} else if (reqMethod == RequestMethod.MULTIPART) {
MediaType MEDIA_TYPE = fileName.endsWith("png") ?
MediaType.parse("image/png") : MediaType.parse("image/jpeg");
MultipartBody.Builder multipartBuilder = new MultipartBody.Builder();
multipartBuilder.setType(MultipartBody.FORM);
multipartBuilder.addFormDataPart("file", fileName, RequestBody.create(MEDIA_TYPE, file));
RequestBody body = multipartBuilder.build();
Request.Builder reqBuilder = new Request.Builder();
reqBuilder.url(url);
reqBuilder.post(body);
Request request = reqBuilder.build();
Response response = client.newCall(request).execute();
String res = response.body().string();
JSONObject jObj = new JSONObject();
jObj.put("statusCode", 1);
jObj.put("response", res);
return jObj.toString();
}
} else {
JSONObject jObj = new JSONObject();
jObj.put("statusCode", 0);
jObj.put("response", context.getString(R.string.no_internet));
return jObj.toString();
}
} catch (final Exception e) {
e.printStackTrace();
JSONObject jObj = new JSONObject();
try {
jObj.put("statusCode", 0);
jObj.put("response", e.toString());
} catch (Exception e1) {
e1.printStackTrace();
}
return jObj.toString();
}
return null;
}
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
try {
JSONObject jObj = new JSONObject(result);
if (jObj.getInt("statusCode") == 1) {
listener.onSuccess(requestId, jObj.getString("response"));
} else {
listener.onError(requestId, jObj.getString("response"));
}
} catch (Exception e) {
listener.onError(requestId, result);
} finally {
dismissProgressDialog();
}
}
private void showProgressDialog() {
progressDialog = new MyProgressDialog(context);
}
private void dismissProgressDialog() {
if (progressDialog != null && progressDialog.isShowing()) {
progressDialog.dismiss();
progressDialog = null;
}
}
private static NetworkManager instance = null;
private Set<RequestListener> arrRequestListeners = null;
private int requestId;
public boolean isProgressVisible = false;
private NetworkManager() {
arrRequestListeners = new HashSet<>();
arrRequestListeners = Collections.synchronizedSet(arrRequestListeners);
}
public static NetworkManager getInstance() {
if (instance == null)
instance = new NetworkManager();
return instance;
}
public synchronized int addRequest(final HashMap<String, String> params, Context context, RequestMethod reqMethod, String apiMethod) {
try {
String url = Constants.WEBSERVICE_URL + apiMethod;
requestId = UniqueNumberUtils.getInstance().getUniqueId();
NetworkClient networkClient = new NetworkClient(context, requestId, this, url, params, reqMethod, isProgressVisible);
networkClient.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
} catch (Exception e) {
onError(requestId, e.toString() + e.getMessage());
}
return requestId;
}
public synchronized int addMultipartRequest(final HashMap<String,String> params, File file, String fileName, Context context, RequestMethod reqMethod, String apiMethod) {
try {
String url = Constants.WEBSERVICE_URL + apiMethod;
requestId = UniqueNumberUtils.getInstance().getUniqueId();
NetworkClient networkClient = new NetworkClient(context, requestId, this, url, params, file, fileName, reqMethod, isProgressVisible);
networkClient.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
} catch (Exception e) {
onError(requestId, e.toString() + e.getMessage());
}
return requestId;
}
public void isProgressBarVisible(boolean isProgressVisible) {
this.isProgressVisible = isProgressVisible;
}
public void setListener(RequestListener listener) {
try {
if (listener != null && !arrRequestListeners.contains(listener)) {
arrRequestListeners.add(listener);
}
} catch (Exception e) {
e.printStackTrace();
}
}
#Override
public void onSuccess(int id, String response) {
if (arrRequestListeners != null && arrRequestListeners.size() > 0) {
for (RequestListener listener : arrRequestListeners) {
if (listener != null)
listener.onSuccess(id, response);
}
}
}
#Override
public void onError(int id, String message) {
try {
if (Looper.myLooper() == null) {
Looper.prepare();
}
} catch (Exception e) {
e.printStackTrace();
}
if (arrRequestListeners != null && arrRequestListeners.size() > 0) {
for (final RequestListener listener : arrRequestListeners) {
if (listener != null) {
listener.onError(id, message);
}
}
}
}
public void removeListener(RequestListener listener) {
try {
arrRequestListeners.remove(listener);
} catch (Exception e) {
e.printStackTrace();
}
}
Create RequestListner intreface
public void onSuccess(int id, String response);
public void onError(int id, String message);
Get Unique Number
private static UniqueNumberUtils INSTANCE = new UniqueNumberUtils();
private AtomicInteger seq;
private UniqueNumberUtils() {
seq = new AtomicInteger(0);
}
public int getUniqueId() {
return seq.incrementAndGet();
}
public static UniqueNumberUtils getInstance() {
return INSTANCE;
}

Develop Reference

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

How to use OKHTTP to make a post request? - java

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();

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