在打印输出图片媒体库表结构过程中,打印部分属性后报错Unable to convert BLOB to string

完整的报错信息如下:

该部分的代码为:

package com.example.imagepicker;

import android.annotation.SuppressLint;
import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.loader.app.LoaderManager;
import androidx.loader.content.CursorLoader;
import androidx.loader.content.Loader;

import java.io.InputStream;
import java.io.OutputStream;
import java.sql.Blob;
import java.sql.SQLException;

public class PickerActivity extends AppCompatActivity {

    private static final String TAG = "PickerActivity";
    private static final int LOADER_ID = 1;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_picker);

        ContentResolver contentResolver = getContentResolver();
//        Uri imageUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
//        Log.d(TAG, "imageUri ------> " + imageUri);
        Uri imageUri = MediaStore.Files.getContentUri("external");
        Cursor cursor = contentResolver.query(imageUri, null, null, null, null);
        String[] columnNames = cursor.getColumnNames();
        while (cursor.moveToNext()) {
            Log.d(TAG, "==============");
            for (String columnName : columnNames) {
                @SuppressLint("Range") String value = cursor.getString(cursor.getColumnIndex(columnName));
                Log.d(TAG, columnName + "------> " + value);
            }
            Log.d(TAG, "==============");
        }
        cursor.close();
//        initLoadManger();
    }

    private void initLoadManger() {
        LoaderManager loaderManager = LoaderManager.getInstance(this);
        loaderManager.initLoader(LOADER_ID, null, new LoaderManager.LoaderCallbacks<Cursor>() {
            @NonNull
            @Override
            public Loader<Cursor> onCreateLoader(int id, @Nullable Bundle args) {
                if (id == LOADER_ID) {
                    return new CursorLoader(PickerActivity.this,
                            MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                            new String[]{"_data", "_display_name", "date_modified"},
                            null, null, "data_added DESC");
                }
                return null;
            }

            @SuppressLint("Range")
            @Override
            public void onLoadFinished(@NonNull Loader<Cursor> loader, Cursor data) {
                if (data != null) {
                    String[] columnNames = data.getColumnNames();
                    while(data.moveToNext()) {
                        Log.d(TAG, "==============");
                        for (String columnName : columnNames) {
//                            @SuppressLint("Range") String value = data.getString(data.getColumnIndex(columnName));
                            Log.d(TAG, columnName + "------> " + data.getString(data.getColumnIndex(columnName)));
                        }
                        Log.d(TAG, "==============");
                    }
                    data.close();
                }
            }

            @Override
            public void onLoaderReset(@NonNull Loader<Cursor> loader) {

            }
        });
    }
}

尝试过网上的一些解决方案,但都没能成功解决这个问题,希望各位大佬指点一二,不甚感激