Retrofit的使用

github网址：https://github.com/square/retrofit
implementation 'com.squareup.retrofit2:retrofit:2.9.0'
implementation 'com.squareup.okhttp3:okhttp:3.14.9'
implementation 'com.squareup.retrofit2:converter-gson:2.0.2'

//自定一个请求类接口retrofitInterface  

    @POST(Constants.Login)
    Call<LoginBean> loginPost(@Body UserBean userBean);

//设置baseUrl

public static Retrofit getRetrofitObj() {

    return new Retrofit.Builder()
            .baseUrl(Constants.IP)
            .addConverterFactory(GsonConverterFactory.create())
            .build();
}

Retrofit retrofit = getRetrofitObj();
retrofitInterface login = retrofit.create(retrofitInterface.class);
Call<LoginBean> call = login.loginPost(new UserBean(name, pw));

call.enqueue(...)