我正尝试使用Retrofit rest客户端使用android中用asp.net core 2.2编写的Web api。从Api成功获取数据,但无法使用Retrofit将数据发布到服务器。通过邮递员和Javascript,webapi可以正常工作。
以下是我尝试过的。
我的活动课程
private Retrofit retrofit = new Retrofit.Builder().baseUrl("https://sga.somee.com/api/")
.addConverterFactory(ScalarsConverterFactory.create()).addConverterFactory(GsonConverterFactory.create()).build();
private ShopApi _shopsApi;
//constructor
public MainActivity2(){
//api classes must be initialized in constructors
_shopsApi = retrofit.create(ShopApi.class);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
Shop _shop = new Shop();
_shop.shop_name = "Starbucks";
_shop.shop_owner = "Unknown";
_shop.shop_longitude = 49545.3455;
_shop.shop_latitude = 55353.554;
_shop.shop_image = "path/path.png";
PostShop(_shop);
}
public void PostShop(Shop shop){
/*
JsonObject obj = new JsonObject();
obj.addProperty("shop_name",shop.shop_name);
obj.addProperty("shop_owner",shop.shop_owner);
obj.addProperty("shop_longitude",shop.shop_longitude);
obj.addProperty("shop_latitude",shop.shop_latitude);
obj.addProperty("shop_image",shop.shop_image);
Log.d(TAG, obj.toString());
*/
Call<ResponseBody> AddShop = _shopsApi.AddShop(shop);
AddShop.enqueue(new Callback<ResponseBody>() {
@Override
public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
Toast.makeText(MainActivity2.this,response.raw().body().toString(),Toast.LENGTH_LONG).show();
}
@Override
public void onFailure(Call<ResponseBody> call, Throwable t) {
Toast.makeText(MainActivity2.this,"Failded to add new shop",Toast.LENGTH_LONG).show();
}
});
}
我的ShopApi类
package com.example.madee.sga.API;
import com.example.madee.sga.Models.Shop;
import java.util.List;
import okhttp3.RequestBody;
import okhttp3.ResponseBody;
import retrofit2.Call;
import retrofit2.http.Body;
import retrofit2.http.Field;
import retrofit2.http.FormUrlEncoded;
import retrofit2.http.GET;
import retrofit2.http.Headers;
import retrofit2.http.POST;
import retrofit2.http.Path;
public interface ShopApi {
@GET("Shops/GetAll/{page}")
Call<List<Shop>> GetAllShops(@Path("page") int page );
@Headers({"Content-Type: application/json"})
@POST("Shops/AddNew")
Call<ResponseBody> AddShop(@Body Shop _shop);
}
您还可以看到我也尝试过在MainActivity中使用JsonObject发布数据,但同样失败 400 Bad Requset
答案 0 :(得分:0)
出现此错误是因为您在 POST 请求的正文中设置了参数。像这样添加参数。
@Headers({"Content-Type: application/json"})
@FormUrlEncoded
@POST("Shops/AddNew")
Call<ResponseBody> AddShop(@Field("ShopName") String ShopName, @Field("OwnerName") String OwnerName, @Field("Longitude") int Longitude,@Field("Latitude") int Latitude,@Field("Imagepath") String Imagepath,@Field("ShopId") String ShopId);
并将此函数称为:
Call<ResponseBody> AddShop = _shopsApi.AddShop(shop.shop_name, shop.shop_owner, shop.shop_longitude, shop.shop_latitude, shop.shop_image,shop.shop_id);
我假设您的服务器接受与您用代码编写的名称相同的参数名称。如果不一致,请相应地进行更改。