Retrofit Post Parameter

Question

I am implementing login feature and for that using Post request but i am getting error saying

"retrofit.RetrofitError: com.squareup.okhttp.internal.http.HttpMethod.METHODS"

Below is my code

import java.util.HashMap;
import java.util.Map;

import retrofit.Callback;
import retrofit.http.*;




//Myapi.java

import java.util.HashMap;
import java.util.Map;

import retrofit.Callback;
import retrofit.http.*;

public interface MyApi {

    /* LOGIN */
    @POST("/api/0.01/oauth2/access_token/")
    // your login function in your api
    public void login(@Body HashMap<String, String> arguments, Callback<String> calback);
}


//In my activity
RestAdapter restAdapter = new RestAdapter.Builder()
                .setEndpoint(Constants_Interface.URL).setClient(newclient)
                .build();

        MyApi mylogin = restAdapter.create(MyApi.class); 
HashMap<String, String> dicMap = new HashMap<String, String>();
dicMap.put("client_id", XXX);
        dicMap.put("client_secret", XXX);
        dicMap.put("username", XXX);
        dicMap.put("password", XXX);
mylogin.login(dicMap, new Callback<String>() {

            @Override
            public void failure(RetrofitError retrofitError) {
                retrofitError.printStackTrace(); // to see if you have
                                                    // errors
            }

            @Override
            public void success(String s, retrofit.client.Response response) {
                // TODO Auto-generated method stub
                Toast.makeText(getApplicationContext(), "Login Succes",
                        Toast.LENGTH_LONG).show();

            }
        });

Below it logcat output.

02-10 13:02:43.846: W/System.err(30684): retrofit.RetrofitError: com.squareup.okhttp.internal.http.HttpMethod.METHODS 02-10

Solution 1

Try using this

public interface SafeUserApi {
 @FormUrlEncoded
    @POST("/api/userlogin")
    void getUserLogin(
            @Field("client_id") String id,
            @Field("client_secret") String secret,
            @Field("username") String uname,
            @Field("password") String password,
            Callback<LoginResult> cb
    );
}

Here parm1 is the POST parameter that you will be passing it to the server. This will solve your problem

in case if you are using PHP u can access the param1 using $uname= $_POST('username');

EDIT 1:

retrofit 2.0 version:

public interface SafeUserApi {
    @FormUrlEncoded
    @POST("/api/userlogin")
    Call<ResponseBody>  getUserLogin(
            @Field("client_id") String id,
            @Field("client_secret") String secret,
            @Field("username") String uname,
            @Field("password") String password
    );
}

Solution 2

You can also pass multiple field parameter: for example:

@FormUrlEncoded
@POST("/oauth/access_token")
void getToken(
    @FieldMap Map<String, String> params, 
    Callback<FacebookLoginUserResponse> callback
);

Solution 3

Retrofit 2.0 version:

@FormUrlEncoded
@POST("api/v2/users/sign_in")
Call<SignInResult> userSignIn(
        @FieldMap HashMap<String, String> authData
);

Solution 4

You can use the class like this:

public interface SafeUserApi {
    @POST("/api/userlogin")
    void getUserLogin(@Body PostData postData);
}

public class PostData{
      String client_id;
      String client_secret;
      String username;
      String password;
}

Solution 5

"JSON CONVERSION

Retrofit uses Gson by default to convert HTTP bodies to and from JSON. If you want to specify behavior that is different from Gson's defaults (e.g. naming policies, date formats, custom types), provide a new Gson instance with your desired behavior when building a RestAdapter. Refer to the Gson documentation for more details on customization."

See link for more info: http://square.github.io/retrofit/

View more solutions

Comments

[Kevin Crain]

If you're server is expecting Json then try making the @Body argument a class.

[Dipen Patel]

No it is not expecting json object. It is asking parameter as string only.

[Kevin Crain]

Retrofit serializes your @Body class by default so Im sure your server will be getting a string

[Dipen Patel]

I have updated the logcat output can you please look over it?

[Kevin Crain]

Thats quite easy make a LoginResponse class with the fields expected from the server and use Callback<LoginResonse> rather than Callback<String>, Retrofit is trying to deserialize.

[Dipen Patel]

I tried @FormUrlEncoded @POST("/api/0.01/oauth2/access_token/") // your login function in your api public void login(@Field("client_id") String client_id, @Field("client_secret") String client_secret, @Field("username") String username, @Field("password") String password, Callback<String> calback);

[Gowtham Raj]

can u paste the stack trace in pastebin ans share the link here?

[Dipen Patel]

I already tried with field parameter as well. @FormUrlEncoded @POST("/api/0.01/oauth/access_token/") // your login function in your api public void login(@Field("client_id") String client_id, @Field("client_secret") String client_secret, @Field("username") String username, @Field("password") String password, Callback<String> calback);

[IgorGanapolsky]

What is I want to use application/json MIME type? Should I still use @FormUrlEncoded

[Gowtham Raj]

if u remove the callbacks then how will u respond to the response

[Ehsan]

I also can not access the parameters by using $_POST['username'] in my PHP code.

[Gowtham Raj]

are u sure u used the same @FormUrlEncoded and @Field ?

[kartheeki j]

please see stackoverflow.com/questions/33183506/…

[Sheepdogsheep]

Thank you! This saved my life, thought I was going to have to upgrade to Retrofit 2. I was getting an error like retrofit.RetrofitError: No field METHODS, and this fixed it.

[zihadrizkyef]

if u remove the callbacks then how will u respond to the response