//生成接口对象
UserMgrService userMgrService = retrofit.create(UserMgrService.class);
//调用接口方法
Call<UserInfoModel> zhangsan = userMgrService.login("张三", "123456");
zhangsan.enqueue(new Callback<UserInfoModel>() {
@Override
public void onResponse(Call<UserInfoModel> call, Response<UserInfoModel> response) {
int code = response.code();
int code1 = response.body().code;
}
@Override
public void onFailure(Call<UserInfoModel> call, Throwable t) {
}
});