java判断文件夹中的图片是否重复

我就是我 2022-10-29 13:26 194阅读 0赞

java判断文件夹中的图片是否重复

直接上代码

package com.example.common;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.IOException;
    import java.math.BigInteger;
    import java.security.MessageDigest;
    import java.util.ArrayList;
    import java.util.HashMap;
    import java.util.Map;
    /**
     * 判断文件相似度
     */
    public class FileDigest {
        /**
         * 获取单个文件的MD5值！
         * @param file
         * @return
         */
        public static String getFileMD5(File file) {
            if (!file.isFile()){
                return null;
            }
            MessageDigest digest = null;
            FileInputStream in=null;
            byte buffer[] = new byte[1024];
            int len;
            try {
                digest = MessageDigest.getInstance("MD5");
                in = new FileInputStream(file);
                while ((len = in.read(buffer, 0, 1024)) != -1) {
                    digest.update(buffer, 0, len);
                }
    
            } catch (Exception e) {
                e.printStackTrace();
                return null;
            }finally {
                if(in!=null){
                    try {
                        in.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
            BigInteger bigInt = new BigInteger(1, digest.digest());
            return bigInt.toString(16);
        }
    
    
    
        public static void main(String[] args) throws IOException {
            String path="D:\\p\\20210209图片采集\\0提供v1.1-处理\\1037#拥抱";
            ArrayList files=FileUtil.getPathFiles(path);
            ArrayList<String> md5s=new ArrayList<String>();
            for (Object file:files){
                File file1 = new File(file+"");
                md5s.add(getFileMD5(file1));
            }
            int md5Size=md5s.size();
            for (int i=0;i<md5Size-1;i++){
                String md5=md5s.get(i);
                for (int j=i+1;j<md5Size;j++){
                    if(md5.equals(md5s.get(j))){
                        String srcFile=files.get(i)+"";
                        System.out.println(srcFile);
                        break;
                    }
                }
            }
    
        }
    
    }