Retrofit Post Parameter

问题

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

回答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
    );
}

回答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
);

回答3:

I got this error today

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

The problem was I was using different versions okhttp and okhttp-urlconnection, so make sure they match.

回答4:

Retrofit 2.0 version:

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

回答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/

回答6:

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;
}

来源：https://stackoverflow.com/questions/28426154/retrofit-post-parameter