在使用Retrofit时遇到了一下问题：

使用网页时可以正常访问到数据

但在使用Android端Retrofit时请求到的response.body为空。

以下为代码：

api接口

public interface UserApi {
    @GET
    Call<UserInform> getUserInformById(@Url String url); 
}

public class HttpUtil {
    private static Retrofit retrofit=new Retrofit.Builder()
            .baseUrl("http://192.168.31.44:10001")
            .addConverterFactory(GsonConverterFactory.create())
            .build();

    private static final String TAG="";

    public static Retrofit getRetrofit(){
        return retrofit;
    }
}

请求方法：

public void getUserInformAndUserId(){
        String url="/safe/userInform/getUserInformById/"+"10006";

        UserApi userApi = HttpUtil.getRetrofit().create(UserApi.class);
        retrofit2.Call<UserInform> task= userApi.getUserInformById(url);
        task.enqueue(new Callback<UserInform>() {
            @Override
            public void onResponse(retrofit2.Call<UserInform> call, Response<UserInform> response) {
                Log.d(TAG,"onResponse --->"+ response.code());


                if(response.code()== HttpsURLConnection.HTTP_OK){
                    System.out.println(response.body());

                    homePage.this.runOnUiThread(new Runnable() {
                        @Override
                        public void run() {


                            userInform=response.body();
                            System.out.println(userInform);
//                            Gson gson=new Gson();
//                            userInform=gson.fromJson(finalInform,UserInform.class);
//                            userInform.setId(BigInteger.valueOf(Long.parseLong("22222")));
//                            System.out.println(userInform);
                        }
                    });

                }
            }
            @Override
            public void onFailure(retrofit2.Call<UserInform> call, Throwable t) {
                Log.d(TAG,"onFailure --->"+ t.toString());
            }
        });

    }

UserInform类

public class UserInform {
    private BigInteger Id;
    private String UserPhone;
    private String UserIdNum;
    private int isDel;

    public UserInform(){

    }

    public UserInform(int isDel,BigInteger id, String userIdNum ,String userPhone) {
        Id = id;
        UserPhone = userPhone;
        UserIdNum = userIdNum;
        this.isDel = isDel;
    }

    public BigInteger getId() {
        return Id;
    }

    public void setId(BigInteger id) {
        Id = id;
    }

    public String getUserPhone() {
        return UserPhone;
    }

    public void setUserPhone(String userPhone) {
        UserPhone = userPhone;
    }

    public String getUserIdNum() {
        return UserIdNum;
    }

    public void setUserIdNum(String userIdNum) {
        UserIdNum = userIdNum;
    }

    public int getIsDel() {
        return isDel;
    }

    public void setIsDel(int isDel) {
        this.isDel = isDel;
    }

    @Override
    public String toString() {
        return "UserInform{" +
                "Id=" + Id +
                ", UserPhone='" + UserPhone + '\'' +
                ", UserIdNum='" + UserIdNum + '\'' +
                ", isDel=" + isDel +
                '}';
    }
}