Android改装POST请求不起作用,但在Postman中起作用

我发现同样的问题 Android Retrofit - POST request doesn't work, but in Postman it works

但我解决不了

我是gradle

compile 'com.squareup.retrofit2:retrofit:2.3.0'
compile 'com.squareup.retrofit2:converter-gson:2.3.0'
compile 'com.squareup.okhttp3:okhttp:3.8.0'
compile 'com.google.code.gson:gson:2.8.0'

这是我在android中发布请求的代码

static final String URL = "http://localhost:3000/";

     public void map(){
    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl(URL)
            .addConverterFactory(GsonConverterFactory.create())
            .build();
    Map map = new HashMap();
    map.put("gender", UserSex);
    map.put("age", UserAge);
    map.put("name", UserName);
    map.put("password", UserPw);
    map.put("email", UserEmail);

    GitHubService gitHubService = retrofit.create(GitHubService.class);
    Call<RetrofitRepo> call = gitHubService.getUserItem(map);
    call.enqueue(new Callback<RetrofitRepo>() {
        @Override
        public void onResponse(Call<RetrofitRepo> call, Response<RetrofitRepo> response) {
            try {
                RetrofitRepo repoList = response.body();
                String message = repoList.getmessage();
                String token = repoList.gettoken();

                if (message.equals("registered successfully")) {
                    Intent intent = new Intent(UserEnroll.this, LoginActivity.class);
                    startActivity(intent);
                    Toast.makeText(context, "register success.", Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(context, "register failed.", Toast.LENGTH_SHORT).show();
                }
            }catch (Exception e){
                e.printStackTrace();
            }
        }

        @Override
        public void onFailure(Call<RetrofitRepo> call, Throwable t) {

        }
    });
}

这是接口

public interface GitHubService {

@FormUrlEncoded
@POST("api/auth/login")
Call<RetrofitRepo> getPost(
        @Field("username") String username
);

@FormUrlEncoded
@POST("api/auth/placeSearch")
Call<RetrofitRepo> getPlaceID(
        @Field("placeID") String placeID
);

@FormUrlEncoded
@POST("api/auth/login")
Call<RetrofitRepo> getItem(
        @FieldMap Map<String, String> option
);

@FormUrlEncoded
@POST("api/auth/register")
Call<RetrofitRepo> getUserItem(
        @FieldMap Map<String, String> option
);

}

我使用节点js这是响应代码

exports.register = (req, res) => {
const { email, password, name, age, gender } = req.body
let newUser = null

const create = (user) => {
    if(user) {
        throw new Error('email exists')
    } else {
        return User.create(email, password, name, age, gender)
    }
}

const count = (user) => {
    newUser = user
    return User.count({}).exec()
}

const assign = (count) => {
    if(count === 1) {
        return newUser.assignAdmin()
    } else {
        return Promise.resolve(false)
    }
}

const respond = (isAdmin) => {
    res.json({
        message: 'registered successfully',
        admin: isAdmin ? true : false
    })
}

const onError = (error) => {
    res.status(409).json({
        message: error.message
    })
}

User.findOneByEmail(email)
.then(create)
.then(count)
.then(assign)
.then(respond)
.catch(onError)}

我请求找个邮递员,结果成功了

http://localhost:3000/api/auth/register
{
"email": "test6@google.com",
"password": "abc123@",
"name": "user",
"age": "18",
"gender": "F"}

POST/api/auth/register 409 13.393 ms-26或 POST/api/auth/register 200 15.064 ms-51它在节点中响应

但它在我的android应用程序上无法使用改型 并且在节点中未响应