优化Volley StringRequest处理JSON响应及网络错误诊断

import org.json.JSONException;
import org.json.JSONObject;

// ... 在Volley的响应回调中 ...
res -> {
    try {
        JSONObject obj = new JSONObject(res);
        // 成功解析JSON对象，现在可以提取数据了
        // 例如，显示Toast或更新UI
        Toast.makeText(this, "JSON解析成功: " + obj.getString("Name"), Toast.LENGTH_LONG).show();

        // 进一步提取数据
        String furnitureId = obj.getString("FurnitureID");
        String name = obj.getString("Name");
        String description = obj.getString("Description");
        // ... 其他字段

        Log.d("FurnitureID", furnitureId);
        Log.d("Name", name);
        Log.d("Description", description);

    } catch (JSONException e) {
        // 处理JSON解析异常，例如响应不是有效的JSON格式
        e.printStackTrace();
        Toast.makeText(this, "JSON解析失败: " + e.getMessage(), Toast.LENGTH_LONG).show();
    } catch (NumberFormatException e) {
        // 处理数字格式异常，如果尝试将非数字字符串转换为数字
        e.printStackTrace();
        Toast.makeText(this, "数据格式错误: " + e.getMessage(), Toast.LENGTH_LONG).show();
    }
}

import android.content.Context;
import android.util.Log;
import android.widget.Toast;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.UnsupportedEncodingException;

public class FurnitureApiClient {

    private static final String TAG = "FurnitureApiClient";
    private static RequestQueue requestQueue;
    private Context context;

    public FurnitureApiClient(Context context) {
        this.context = context;
        if (requestQueue == null) {
            requestQueue = Volley.newRequestQueue(context.getApplicationContext());
        }
    }

    public interface FurnitureDetailCallback {
        void onSuccess(JSONObject furnitureDetail);
        void onError(String errorMessage);
    }

    public void getFurnitureDetails(String url, FurnitureDetailCallback callback) {
        StringRequest stringRequest = new StringRequest(
                Request.Method.GET,
                url,
                response -> {
                    try {
                        JSONObject obj = new JSONObject(response);
                        Log.d(TAG, "JSON Response: " + obj.toString());

                        // 示例：提取并打印数据
                        String furnitureId = obj.getString("FurnitureID");
                        String name = obj.getString("Name");
                        Log.d(TAG, "FurnitureID: " + furnitureId + ", Name: " + name);

                        if (callback != null) {
                            callback.onSuccess(obj);
                        }

                    } catch (JSONException e) {
                        Log.e(TAG, "JSON解析失败: " + e.getMessage(), e);
                        Toast.makeText(context, "数据格式错误，请联系管理员。", Toast.LENGTH_LONG).show();
                        if (callback != null) {
                            callback.onError("JSON解析失败: " + e.getMessage());
                        }
                    } catch (Exception e) { // 捕获其他可能的运行时异常
                        Log.e(TAG, "处理响应时发生未知错误: " + e.getMessage(), e);
                        Toast.makeText(context, "处理响应时发生未知错误。", Toast.LENGTH_LONG).show();
                        if (callback != null) {
                            callback.onError("处理响应时发生未知错误: " + e.getMessage());
                        }
                    }
                },
                error -> {
                    String errorMessage = "网络请求失败";
                    if (error != null) {
                        if (error.networkResponse != null) {
                            int statusCode = error.networkResponse.statusCode;
                            errorMessage += ", 状态码: " + statusCode;
                            try {
                                String errorData = new String(error.networkResponse.data, "UTF-8");
                                errorMessage += ", 详情: " + errorData;
                            } catch (UnsupportedEncodingException e) {
                                Log.e(TAG, "无法解析错误响应数据", e);
                            }
                        } else {
                            errorMessage += ", 原因: " + error.getMessage();
                        }
                    }
                    Log.e(TAG, errorMessage, error);
                    Toast.makeText(context, errorMessage, Toast.LENGTH_LONG).show();
                    if (callback != null) {
                        callback.onError(errorMessage);
                    }
                }
        );

        requestQueue.add(stringRequest);
    }

    // 在Activity或Fragment中使用示例
    // new FurnitureApiClient(this).getFurnitureDetails("https://your-api-url.com/...", new FurnitureApiClient.FurnitureDetailCallback() {
    //     @Override
    //     public void onSuccess(JSONObject furnitureDetail) {
    //         // 在这里处理成功的JSON数据
    //         Log.d(TAG, "获取到家具详情: " + furnitureDetail.toString());
    //     }
    //
    //     @Override
    //     public void onError(String errorMessage) {
    //         // 在这里处理错误信息
    //         Log.e(TAG, "获取家具详情失败: " + errorMessage);
    //     }
    // });
}