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json之这个改造代码可能的错误是什么我无法理解我的 API 和 MOBILE 的连接

2025年12月25日29lyj

我想找出错误是来 self 的代码还是来 self 的 api。

这是我的 API 类:

      import retrofit2.Call; 
      import retrofit2.http.Body; 
      import retrofit2.http.POST; 
 
      public interface Api { 
 
 
          @POST("/api/Database/NewLocation") 
          Call<MapDetails> mapDetailLocation(@Body MapDetails mapDetails); 
 
          @POST("/api/Registration/RegisterDevice") 
          Call<RegisterDetails> registerDetails(@Body RegisterDetails                      
           registerAllDetails); 
 
      }

二传手类:

      import com.google.gson.annotations.SerializedName; 
 
      public class MapDetails { 
          @SerializedName("SerialNumber") 
          private String serialNumber; 
          @SerializedName("Coordinate1") 
          private String coordinate1; 
          @SerializedName("Coordinate2") 
          private String coordinate2; 
          @SerializedName("DateTime") 
          private String dateTime; 
          @SerializedName("Speed") 
          private String speed; 
          @SerializedName("Port") 
          private Integer Port; 
 
 
 
          public MapDetails(String serialNumber, String coordinate1, String            
           coordinate2, 
                            String dateTime, String speed, Integer port) { 
              this.serialNumber = serialNumber; 
              this.coordinate1 = coordinate1; 
              this.coordinate2 = coordinate2; 
              this.dateTime = dateTime; 
              this.speed = speed; 
              Port = port; 
          } 
 
          public String getSerialNumber() { 
              return serialNumber; 
          } 
 
          public void setSerialNumber(String serialNumber) { 
              this.serialNumber = serialNumber; 
          } 
 
          public String getCoordinate1() { 
              return coordinate1; 
          } 
 
          public void setCoordinate1(String coordinate1) { 
              this.coordinate1 = coordinate1; 
          } 
 
          public String getCoordinate2() { 
              return coordinate2; 
          } 
 
          public void setCoordinate2(String coordinate2) { 
              this.coordinate2 = coordinate2; 
          } 
 
          public String getDateTime() { 
              return dateTime; 
          } 
 
          public void setDateTime(String dateTime) { 
              this.dateTime = dateTime; 
          } 
 
          public String getSpeed() { 
              return speed; 
          } 
 
          public void setSpeed(String speed) { 
              this.speed = speed; 
          } 
 
          public Integer getPort() { 
              return Port; 
          } 
 
                    public void setPort(Integer port) { 
              Port = port; 
          } 
      }

事件类:

                    MapDetails mapDetails = new MapDetails("1807200005",  
                    lat,lon, currentDateTimeString, "0", 9090); 
                    setLocation(mapDetails); 
 
 
 
                   private void setLocation(MapDetails mapDetails) { 
                      initializeRetrofit(mapDetails); 
                     } 
 
                private void initializeRetrofit(MapDetails mapDetails) { 
                    Retrofit.Builder builder = new Retrofit.Builder() 
                            .baseUrl("http://undefine.apisecure.data[![enter image description here][1]][1]") 
                      .addConverterFactory(GsonConverterFactory.create()); 
 
                    Retrofit retrofit = builder.build(); 
 
                    Api locate = retrofit.create(Api.class); 
 
                    SetMapLocationApiCaller(locate, mapDetails); 
 
 
                } 
 
                private void SetMapLocationApiCaller(Api locate, MapDetails  
                mapDetails) { 
 
                    Call<MapDetails> call =                       
                    locate.mapDetailLocation(mapDetails); 
                    executeCallAsynchronously(call); 
                } 
 
                private void executeCallAsynchronously(Call call) { 
                    call.enqueue(new Callback<MapDetails>() { 
                        @Override 
                        public void onResponse(Call<MapDetails> call,  
                         Response<MapDetails> response) { 
 
                            Snackbar.make(view,""+ response,  
                                    Snackbar.LENGTH_INDEFINITE) 
                                    .setAction("Action", null).show(); 
                        } 
 
                        @Override 
                        public void onFailure(Call call, Throwable t) { 
                            Snackbar.make(view, ""+t.getMessage(),  
                                      Snackbar.LENGTH_INDEFINITE) 
                                    .setAction("Action", null).show(); 
 
                        } 
                    }); 
 
 
                }

在我的应用程序中，这是我的应用程序的响应:

但它没有添加到我的 sql 中。但是如果我使用失眠症，它会把我创建的数据发送到数据库。

此数据是通过 insomia 而非移动设备插入的。

请您参考如下方法:

您几乎找到了解决方案。但是，您在将参数传递给 API 请求时没有犯什么错误。

正如我从 Insomia 应用程序的屏幕截图中看到的那样，该 API 需要 JSONArray 作为参数，但您发送的是 JSONObject。

示例 JSON 参数

[ 
    { 
        "SerialNumber" : "1234", 
        "Coordinate1" : "12.7845874", 
        "Coordinate2" : "76.4584578", 
        "DateTime" : "2018-11-14 08:45:00", 
        "Speed" : "0", 
        "Port" : 9090 
    } 
]

根据上面的JSON结构你需要改变Api.java类是这样的:

import retrofit2.Call; 
import retrofit2.http.Body; 
import retrofit2.http.POST; 
 
import java.util.List;  // add import 
 
public interface Api { 
 
    @POST("/api/Database/NewLocation") 
    Call < MapDetails > mapDetailLocation(@Body List<MapDetails> mapDetails); 
 
                                            //  ^^^^ changes here 
 
    @POST("/api/Registration/RegisterDevice") 
    Call < RegisterDetails > registerDetails(@Body RegisterDetails registerAllDetails); 
 
}

添加List<MapDetails>至 mapDetailLocation()方法参数。

在 Activity 或 Fragment 中使用上述方法是这样的:

//...... 
// part of the code 
 
MapDetails mapDetails = new MapDetails("1807200005", lat, lon, currentDateTimeString, "0", 9090); 
 
List<MapDetails> data = new ArrayList<>(); 
 
data.add(mapDetails); 
 
Retrofit.Builder builder = new Retrofit.Builder() 
                            .baseUrl("<BASE_URL>")  // change base URL 
                            .addConverterFactory(GsonConverterFactory.create()); 
 
Retrofit retrofit = builder.build(); 
 
Api locate = retrofit.create(Api.class); 
 
Call<MapDetails> call = locate.mapDetailLocation(data);     // NOTICE THE CHANGES IN PARAMETER 
 
call.enqueue(new Callback<MapDetails>() { 
    @Override 
    public void onResponse(Call<MapDetails> call, Response<MapDetails> response) { 
 
        // do whatever you want 
 
    } 
 
    @Override 
    public void onFailure(Call call, Throwable t) { 
 
        // log the error message  
 
    } 
});

注意:请根据您的要求更改基本 URL。

编辑:

从 MapDetails 更改 Activity 中的方法参数至 List<MapDetails> 

// prepare data 
 
MapDetails data = new MapDetails("1807200005", lat, lon, currentDateTimeString, "0", 9090); 
 
// add it to ArrayList 
 
List<MapDetails> mapDetails = new ArrayList<>(); 
 
mapDetails.add(data); 
 
// pass it as an argument 
 
private void setLocation(List<MapDetails> mapDetails) { 
    initializeRetrofit(mapDetails); 
}

在 initializeRetrofit() 中更改方法参数

private void initializeRetrofit(List<MapDetails> mapDetails) { 
    Retrofit.Builder builder = new Retrofit.Builder() 
                            .baseUrl("<BASE_URL>")  // change base URL 
                            .addConverterFactory(GsonConverterFactory.create()); 
 
    Retrofit retrofit = builder.build(); 
 
    Api locate = retrofit.create(Api.class); 
 
    SetMapLocationApiCaller(locate, mapDetails); 
 
}

再次更改方法参数

private void SetMapLocationApiCaller(Api locate, List<MapDetails> mapDetails) { 
    Call<MapDetails> call = locate.mapDetailLocation(mapDetails); 
    executeCallAsynchronously(call); 
}


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