利用Java生成图像搜索批量删除数据的元数据

一：确认思路

1.查看官方文档的批量操作说明

批量操作

二：确认具体步骤

1.查看官方文档后可以确认几个要点

• 删除的图片以及元数据文件要放在oss同一路径下
• 元数据的格式如下主要有两个字段OperationType、ProductId

2.元数据生成步骤

1.将实例数据元信息导出，格式如下

{"CategoryId":"88888888","CustomContent":"","PicName":"222","ProductId":"111","IntAttr":"","StrAttr":""}
{"CategoryId":"88888888","CustomContent":"","PicName":"222","ProductId":"222","IntAttr":"","StrAttr":""}

2.将导出的元信息内容提取出来，生成如下元数据

{"OperationType":"DELETE","ProductId":"111"}    
{"OperationType":"DELETE","ProductId":"222"}    

3.添加依赖

 <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.75</version>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.11.0</version>
        </dependency>

4.JavaCode

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import java.io.*;



/**
 * JsonTest
 *
 * @Author Tan
 * @Date: 2021/2/26 10:38
 * @Version 1.0
 */
public class Json {


    public static void main(String[] args) {


            try {
                File jsonReadFile = new File("C:\\Users\\cnc\\Desktop\\test.txt");
                FileReader fileReader = new FileReader(jsonReadFile);
                BufferedReader sb = new BufferedReader(fileReader);
                String line = null;
                JSONObject json = new JSONObject(16,true);
                PrintWriter out = new PrintWriter(new FileWriter("C:\\Users\\cnc\\Desktop\\increment.meta"));


                while ((line = sb.readLine()) != null) {
                    JSONObject jsonObject = JSON.parseObject(line);
                    System.out.println(jsonObject.getString("ProductId"));

                    json.put("OperationType","DELETE");
                    json.put("ProductId",jsonObject.getString("ProductId"));


                    out.write(json.toString()+"\t\n");

                    System.out.println("输出完成");
                }
                fileReader.close();
                out.close();
            } catch (IOException e) {
                e.printStackTrace();

            }
        }


}

4.运行结果

3.得到删除的元数据文件后，我们将它上传致oss图片路径下即可批量删除