Java中MinIo文件系统工具类

导读:本篇文章讲解 Java中MinIo文件系统工具类,希望对大家有帮助,欢迎收藏,转发!站点地址:www.bmabk.com

Java中MinIo文件系统工具类

1.准备工作

  <!--minio pom-->
        <dependency>
            <groupId>io.minio</groupId>
            <artifactId>minio</artifactId>
            <version>7.1.0</version>
        </dependency>
#minio相关配置
minio:
  endpoint: http://127.0.0.1:9000
  accessKey: minioadmin
  secretKey: minioadmin
  bucketName: icloud-test
  #存储文件夹
  folder: cloudRecording/

2.工具类方法

2.1:上传的时候可以设置文件的contentType类型目的image-20221215142444627

2.2:设置全局访问策略

因为默认是桶的权限是private,那么就在公网上不能正常访问了.一种方式是通过web端中手动设置.第二种方式就是代码手动设置.
如果不需要公网访问,那么取消即可.

image-20221215142825169

image-20221215142852807

参考这篇文章:MInIO几种不同的访问策略

2.3工具类


package com.xxy.demotest.utils.minio;

import io.minio.MinioClient;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

@Data
@Component
@Slf4j
public class MinIoClientConfig {

    @Value("${minio.endpoint}")
    private String endpoint;
    @Value("${minio.accessKey}")
    private String accessKey;
    @Value("${minio.secretKey}")
    private String secretKey;


    /**
     * 注入minio 客户端
     * https://www.wenjiangs.com/doc/minio-java-client-api-reference#95c359a19513fffb37878fd413d54468
     * @return
     */
    @Bean
    public MinioClient minioClient() {
        MinioClient minioClient = MinioClient.builder()
                .endpoint(endpoint)
                .credentials(accessKey, secretKey)
                .build();
        return minioClient;
    }
}


package com.xxy.demotest.utils.minio;

import com.xxy.demotest.result.baseresult.ErrorCodeEnum;
import com.xxy.demotest.result.exception.BizException;
import com.xxy.demotest.utils.InputStreamConvertMultipartFileUtil;
import com.xxy.demotest.utils.WorkUtil.FileUtil;
import io.minio.*;
import io.minio.errors.*;
import io.minio.messages.Item;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.PostConstruct;
import java.io.*;
import java.net.URLDecoder;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.time.ZonedDateTime;
import java.util.HashMap;
import java.util.Map;

/**
 * @description: minio工具类
 * @version:1.0
 */
@Component
@Slf4j
public class MinioUtils {

    @Autowired
    private MinioClient minioClient;

    @Value("${minio.bucketName}")
    private String bucketName;

    @Value("${minio.endpoint}")
    private String endpoint;

    @Value("${minio.folder}")
    private String folder;

    @Value("${minio.accessKey}")
    private String accessKey;

    @Value("${minio.secretKey}")
    private String secretKey;


    /**
     * 上传File文件
     *
     * @param file
     * @return
     */
    public String uploadFile(File file) {
        MultipartFile multipartFile = FileUtil.fileToMultipartFile(file);
        return uploadMultipartFile(multipartFile);
    }

    /**
     * description: 上传MultipartFile文件
     *
     * @param file
     * @return: java.lang.String
     */
    public String uploadMultipartFile(MultipartFile file) {
        //判断bucket是否存在
        existBucket(bucketName);
        //判断目录路径是否存在
        if (!doesFolderExist(bucketName,folder)) {
            try {
                createFolder(bucketName,folder);
            } catch (Exception e) {
                //throw new RuntimeException(e);
                log.error("创建目录失败!");
            }
        }
        String fileName = file.getOriginalFilename();
        String[] split = fileName.split("\\.");
        if (split.length > 1) {
            fileName = split[0] + "_" + System.currentTimeMillis() + "." + split[1];
        } else {
            fileName = fileName + System.currentTimeMillis();
        }
        InputStream in = null;
        try {
            in = file.getInputStream();
            //此方法为动态获取contentType,可以直接预览
            String contentType = getContentTypeByMap(fileName.substring(fileName.lastIndexOf(".")));
            log.info("contentType的值为:{}", contentType);
            minioClient.putObject(PutObjectArgs.builder()
                    .bucket(bucketName)
                    .object(fileName)
                    .stream(in, in.available(), -1)
                    //如果为流,默认不预览直接下载
                    //.contentType("application/octet-stream")
                    .contentType(contentType)
                    .build()
            );
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return endpoint + "/" + bucketName + "/"+ fileName;
    }

    /**
     * 根据文件名称下载File类型的文件
     *
     * @param fileUrl
     * @return
     */
    public  MultipartFile downloadMultipartFileByUrl(String fileUrl) {

        try {
            String fileName = fileUrl.substring(fileUrl.lastIndexOf("/") + 1);
            InputStream inputStream = minioClient.getObject(GetObjectArgs.builder().bucket(bucketName).object(fileName).build());
            MultipartFile multipartFile = InputStreamConvertMultipartFileUtil.getMultipartFile(inputStream, fileName);
            return multipartFile;
        } catch (Exception e) {
            log.error("文件下载失败:{}", e.getMessage());
            throw new BizException(ErrorCodeEnum.GET_FILE_DOWNLOAD_URL_FAIL);
        }
    }

    /**
     * 根据文件名称下载File类型的文件
     *
     * @param fileUrl
     * @return
     */
    public  File downloadFileByUrl(String fileUrl) {
        try {
            String fileName = fileUrl.substring(fileUrl.lastIndexOf("/") + 1);
            InputStream inputStream = minioClient.getObject(GetObjectArgs.builder().bucket(bucketName).object(fileName).build());
            MultipartFile multipartFile = InputStreamConvertMultipartFileUtil.getMultipartFile(inputStream, fileName);
            File file = FileUtil.MultipartFileToFile(multipartFile);
            return file;

        } catch (Exception e) {
            log.error("文件下载失败:{}", e.getMessage());
            throw new BizException(ErrorCodeEnum.GET_FILE_DOWNLOAD_URL_FAIL);
        }
    }
    /**
     * 断点下载
     *
     * @param fileName 文件名称
     * @param offset 起始字节的位置
     * @param length 要读取的长度
     * @return 流
     */
    public InputStream getObject(String fileName, long offset, long length)
            throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
        return minioClient.getObject(
                GetObjectArgs.builder().bucket(bucketName).object(fileName).offset(offset).length(length)
                        .build());
    }

    /**
     * 获取路径下文件列表
     *
     * @param prefix 文件名称
     * @param recursive 是否递归查找,如果是false,就模拟文件夹结构查找
     * @return 二进制流
     */
    public  Iterable<Result<Item>> listObjects( String prefix,
                                                     boolean recursive) {
        return minioClient.listObjects(
                ListObjectsArgs.builder().bucket(bucketName).prefix(prefix).recursive(recursive).build());
    }
    /**
     * 获取文件外链
     *
     * @param objectName 文件名称
     * @param expires 过期时间 <=7 秒级
     * @return url
     */
    public  String getPresignedObjectUrl(String objectName,
                                               Integer expires){
        try {
            String fileUrl = minioClient.presignedGetObject(bucketName, objectName, expires);
            return fileUrl;
        } catch (Exception e) {
            log.error("获取文件外链失败:{}", e.getMessage());
            throw new BizException(ErrorCodeEnum.GET_FILE_DOWNLOAD_URL_FAIL);
        }
    }

    /**
     * 给presigned URL设置策略
     * 允许给POST请求的presigned URL设置策略,比如接收对象上传的存储桶名称的策略,key名称前缀,过期策略。
     * @param objectName 对象名
     * @return map
     */
    public Map<String, String> presignedGetObject(String objectName) {
        try {
            PostPolicy policy = new PostPolicy(bucketName, objectName,
                    ZonedDateTime.now().plusDays(7));
            policy.setContentType("image/png");
            Map<String, String> formData = minioClient.presignedPostPolicy(policy);
            log.info("curl -X POST ");
            for (Map.Entry<String, String> entry : formData.entrySet()) {
                log.info(" -F " + entry.getKey() + "=" + entry.getValue());
            }
            return formData;
        } catch (Exception e) {
            log.error("Error occurred: " + e);
        }
        return null;
    }
    /**
     * 将URLDecoder编码转成UTF8
     *
     * @param str
     * @return
     * @throws UnsupportedEncodingException
     */
    public static String getUtf8ByURLDecoder(String str) throws UnsupportedEncodingException {
        String url = str.replaceAll("%(?![0-9a-fA-F]{2})", "%25");
        return URLDecoder.decode(url, "UTF-8");
    }

    /**
     * 根据key删除服务器上的文件
     */
    public  void deleteFileByUrl(String fileUrl) {
        try {
            String fileName = fileUrl.substring(fileUrl.lastIndexOf("/") + 1);
            minioClient.removeObject(RemoveObjectArgs.builder().bucket(bucketName).object(folder + fileName).build());
            log.info("删除" + bucketName + "下的文件" + folder + fileName + "成功");
        } catch (Exception e) {
            log.error("删除文件失败:{}", e.getMessage());
            throw new RuntimeException(e);
        }
    }

    /**
     * 创建文件夹或目录
     *
     * @param bucketName 存储桶
     * @param objectName 目录路径
     */
    public ObjectWriteResponse createFolder(String bucketName, String objectName) throws ServerException, InvalidBucketNameException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        return minioClient.putObject(
                PutObjectArgs.builder().bucket(bucketName).object(objectName).stream(
                                new ByteArrayInputStream(new byte[]{}), 0, -1)
                        .build());
    }
    /**
     * 判断文件夹是否存在
     *
     * @param bucketName 存储桶
     * @param objectName 文件夹名称(去掉/)
     * @return true:存在
     */
    public  boolean doesFolderExist(String bucketName, String objectName) {
        boolean exist = false;
        try {
            Iterable<Result<Item>> results = minioClient.listObjects(
                    ListObjectsArgs.builder().bucket(bucketName).prefix(objectName).recursive(false).build());
            for (Result<Item> result : results) {
                Item item = result.get();
                if (item.isDir() && objectName.equals(item.objectName())) {
                    exist = true;
                }
            }
        } catch (Exception e) {
            exist = false;
        }
        return exist;
    }

    /**
     * 创建minioClient
     */
    private void createMinioClient() {
        try {
            if (null == minioClient) {
                log.info("minioClient create start");
                minioClient = MinioClient.builder().endpoint(endpoint).credentials(accessKey, secretKey)
                        .build();
                createBucket();
                //设置全局访问策略
                setBucketPolicy();
                log.info("minioClient create end");
            }else{
                //设置全局访问策略
               setBucketPolicy();
            }
        } catch (Exception e) {
            log.error("连接MinIO服务器异常:{}", e);
        }
    }

    private void setBucketPolicy() throws InvalidBucketNameException {
        try {
            String folderName = folder.substring(0, folder.length() - 1);
//            String json="{\n" +
//                    "    \"Version\": \"2012-10-17\",\n" +
//                    "    \"Statement\": [\n" +
//                    "        {\n" +
//                    "            \"Effect\": \"Allow\",\n" +
//                    "            \"Action\": [\n" +
//                    "                \"s3:GetObject\",\n" +
//                    "                \"s3:ListAllMyBuckets\",\n" +
//                    "                \"s3:ListBucket\",\n" +
//                    "                \"s3:PutObject\",\n" +
//                    "                \"s3:DeleteObject\",\n" +
//                    "                \"s3:GetBucketLocation\"\n" +
//                    "            ],\n" +
//                    "          \"Principal\": {\"AWS\":[\"*\"]},\n" +
//                    "            \"Resource\": [\n" +
//                    "                \"arn:aws:s3:::icloud-test\",\n" +
//                    "                \"arn:aws:s3:::icloud-test/**\"\n" +
//                    "            ]\n" +
//                    "        }\n" +
//                    "    ]\n" +
//                    "}";
            String config = "{\n" +
                    "     \"Statement\": [\n" +
                    "         {\n" +
                    "             \"Action\": [\n" +
                    "                 \"s3:GetBucketLocation\",\n" +
                    "                 \"s3:ListBucket\"\n" +
                    "             ],\n" +
                    "             \"Effect\": \"Allow\",\n" +
                    "             \"Principal\": \"*\",\n" +
                    "             \"Resource\": \"arn:aws:s3:::" + bucketName + "\"\n" +
                    "         },\n" +
                    "         {\n" +
                    "       \"Action\": [\n" +
                    "                \"s3:GetObject\",\n" +
                    "                \"s3:PutObject\",\n" +
                    "                \"s3:DeleteObject\"\n" +
                    "      ],\n" +
                    "             \"Effect\": \"Allow\",\n" +
                    "             \"Principal\": {\"AWS\":[\"*\"]},\n" +
                    "             \"Resource\": \"arn:aws:s3:::" + bucketName + "/"  + "**" + "\"\n" +
                    "         }\n" +
                    "     ],\n" +
                    "     \"Version\": \"2012-10-17\"\n" +
                    "}";

            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(bucketName).config(config).build());

        } catch (ErrorResponseException | InsufficientDataException
                 | InternalException | InvalidKeyException
                 | InvalidResponseException | IOException
                 | NoSuchAlgorithmException | ServerException
                 | XmlParserException e) {
            log.error("minio设置桶:{}策略失败", bucketName, e);
        }
    }

    /**
     * description: 判断bucket是否存在,不存在则创建
     *
     * @return: void
     */
    public void existBucket(String name) {
        try {
            boolean exists = minioClient.bucketExists(BucketExistsArgs.builder().bucket(name).build());
            if (!exists) {
                minioClient.makeBucket(MakeBucketArgs.builder().bucket(name).build());
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * 初始化Bucket
     *
     * @throws Exception 异常
     */
    private void createBucket()
            throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException, RegionConflictException {
        if (!minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build())) {
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucketName).build());
        }
    }
    @PostConstruct
    private void handlerInit() {
        createMinioClient();
        log.info("MinIo初始化成功");
    }
    private static Map<String, String> map = new HashMap<>();

    static {
        map.put("other", "application/octet-stream");
        map.put(".tif", "image/tiff");
        map.put("0.001", "application/x-001");
        map.put("0.301", "application/x-301");
        map.put("0.323", "text/h323");
        map.put("0.906", "application/x-906");
        map.put("0.907", "drawing/907");
        map.put(".a11", "application/x-a11");
        map.put(".acp", "audio/x-mei-aac");
        map.put(".ai", "application/postscript");
        map.put(".aif", "audio/aiff");
        map.put(".aifc", "audio/aiff");
        map.put(".aiff", "audio/aiff");
        map.put(".anv", "application/x-anv");
        map.put(".asa", "text/asa");
        map.put(".asf", "video/x-ms-asf");
        map.put(".asp", "text/asp");
        map.put(".asx", "video/x-ms-asf");
        map.put(".au", "audio/basic");
        map.put(".avi", "video/avi");
        map.put(".awf", "application/vnd.adobe.workflow");
        map.put(".biz", "text/xml");
        map.put(".bmp", "application/x-bmp");
        map.put(".bot", "application/x-bot");
        map.put(".c4t", "application/x-c4t");
        map.put(".c90", "application/x-c90");
        map.put(".cal", "application/x-cals");
        map.put(".cat", "application/vnd.ms-pki.seccat");
        map.put(".cdf", "application/x-netcdf");
        map.put(".cdr", "application/x-cdr");
        map.put(".cel", "application/x-cel");
        map.put(".cer", "application/x-x509-ca-cert");
        map.put(".cg4", "application/x-g4");
        map.put(".cgm", "application/x-cgm");
        map.put(".cit", "application/x-cit");
        map.put(".class", "java/");
        map.put(".cml", "text/xml");
        map.put(".cmp", "application/x-cmp");
        map.put(".cmx", "application/x-cmx");
        map.put(".cot", "application/x-cot");
        map.put(".crl", "application/pkix-crl");
        map.put(".crt", "application/x-x509-ca-cert");
        map.put(".csi", "application/x-csi");
        map.put(".css", "text/css");
        map.put(".cut", "application/x-cut");
        map.put(".dbf", "application/x-dbf");
        map.put(".dbm", "application/x-dbm");
        map.put(".dbx", "application/x-dbx");
        map.put(".dcd", "text/xml");
        map.put(".dcx", "application/x-dcx");
        map.put(".der", "application/x-x509-ca-cert");
        map.put(".dgn", "application/x-dgn");
        map.put(".dib", "application/x-dib");
        map.put(".dll", "application/x-msdownload");
        map.put(".doc", "application/msword");
        map.put(".dot", "application/msword");
        map.put(".drw", "application/x-drw");
        map.put(".dtd", "text/xml");
        map.put(".dwf", "Model/vnd.dwf");
        //map.put(".dwf","application/x-dwf");
        map.put(".dwg", "application/x-dwg");
        map.put(".dxb", "application/x-dxb");
        map.put(".dxf", "application/x-dxf");
        map.put(".edn", "application/vnd.adobe.edn");
        map.put(".emf", "application/x-emf");
        map.put(".eml", "message/rfc822");
        map.put(".ent", "text/xml");
        map.put(".epi", "application/x-epi");
        map.put(".eps", "application/x-ps");
        //map.put(".eps","application/postscript");
        map.put(".etd", "application/x-ebx");
        map.put(".exe", "application/x-msdownload");
        map.put(".fax", "image/fax");
        map.put(".fdf", "application/vnd.fdf");
        map.put(".fif", "application/fractals");
        map.put(".fo", "text/xml");
        map.put(".frm", "application/x-frm");
        map.put(".g4", "application/x-g4");
        map.put(".gbr", "application/x-gbr");
        map.put(".", "application/x-");
        map.put(".gif", "image/gif");
        map.put(".gl2", "application/x-gl2");
        map.put(".gp4", "application/x-gp4");
        map.put(".hgl", "application/x-hgl");
        map.put(".hmr", "application/x-hmr");
        map.put(".hpg", "application/x-hpgl");
        map.put(".hpl", "application/x-hpl");
        map.put(".hqx", "application/mac-binhex40");
        map.put(".hrf", "application/x-hrf");
        map.put(".hta", "application/hta");
        map.put(".htc", "text/x-component");
        map.put(".htm", "text/html");
        map.put(".html", "text/html");
        map.put(".htt", "text/webviewhtml");
        map.put(".htx", "text/html");
        map.put(".icb", "application/x-icb");
        map.put(".ico", "image/x-icon");
        //map.put(".ico","application/x-ico");
        map.put(".iff", "application/x-iff");
        map.put(".ig4", "application/x-g4");
        map.put(".igs", "application/x-igs");
        map.put(".iii", "application/x-iphone");
        map.put(".img", "application/x-img");
        map.put(".ins", "application/x-internet-signup");
        map.put(".isp", "application/x-internet-signup");
        map.put(".IVF", "video/x-ivf");
        map.put(".java", "java/*");
        map.put(".jfif", "image/jpeg");
        map.put(".jpe", "image/jpeg");
        //map.put(".jpe","application/x-jpe");
        map.put(".jpeg", "image/jpeg");
        map.put(".jpg", "image/jpeg");
        //map.put(".jpg","application/x-jpg");
        map.put(".js", "application/x-javascript");
        map.put(".jsp", "text/html");
        map.put(".la1", "audio/x-liquid-file");
        map.put(".lar", "application/x-laplayer-reg");
        map.put(".latex", "application/x-latex");
        map.put(".lavs", "audio/x-liquid-secure");
        map.put(".lbm", "application/x-lbm");
        map.put(".lmsff", "audio/x-la-lms");
        map.put(".ls", "application/x-javascript");
        map.put(".ltr", "application/x-ltr");
        map.put(".m1v", "video/x-mpeg");
        map.put(".m2v", "video/x-mpeg");
        map.put(".m3u", "audio/mpegurl");
        map.put(".m4e", "video/mpeg4");
        map.put(".mac", "application/x-mac");
        map.put(".man", "application/x-troff-man");
        map.put(".math", "text/xml");
        map.put(".mdb", "application/msaccess");
        //map.put(".mdb","application/x-mdb");
        map.put(".mfp", "application/x-shockwave-flash");
        map.put(".mht", "message/rfc822");
        map.put(".mhtml", "message/rfc822");
        map.put(".mi", "application/x-mi");
        map.put(".mid", "audio/mid");
        map.put(".midi", "audio/mid");
        map.put(".mil", "application/x-mil");
        map.put(".mml", "text/xml");
        map.put(".mnd", "audio/x-musicnet-download");
        map.put(".mns", "audio/x-musicnet-stream");
        map.put(".mocha", "application/x-javascript");
        map.put(".movie", "video/x-sgi-movie");
        map.put(".mp1", "audio/mp1");
        map.put(".mp2", "audio/mp2");
        map.put(".mp2v", "video/mpeg");
        map.put(".mp3", "audio/mp3");
        map.put(".aac", "audio/mp3");
        map.put(".mp4", "video/mpeg4");
        map.put(".mpa", "video/x-mpg");
        map.put(".mpd", "application/vnd.ms-project");
        map.put(".mpe", "video/x-mpeg");
        map.put(".mpeg", "video/mpg");
        map.put(".mpg", "video/mpg");
        map.put(".mpga", "audio/rn-mpeg");
        map.put(".mpp", "application/vnd.ms-project");
        map.put(".mps", "video/x-mpeg");
        map.put(".mpt", "application/vnd.ms-project");
        map.put(".mpv", "video/mpg");
        map.put(".mpv2", "video/mpeg");
        map.put(".mpw", "application/vnd.ms-project");
        map.put(".mpx", "application/vnd.ms-project");
        map.put(".mtx", "text/xml");
        map.put(".mxp", "application/x-mmxp");
        map.put(".net", "image/pnetvue");
        map.put(".nrf", "application/x-nrf");
        map.put(".nws", "message/rfc822");
        map.put(".odc", "text/x-ms-odc");
        map.put(".out", "application/x-out");
        map.put(".p10", "application/pkcs10");
        map.put(".p12", "application/x-pkcs12");
        map.put(".p7b", "application/x-pkcs7-certificates");
        map.put(".p7c", "application/pkcs7-mime");
        map.put(".p7m", "application/pkcs7-mime");
        map.put(".p7r", "application/x-pkcs7-certreqresp");
        map.put(".p7s", "application/pkcs7-signature");
        map.put(".pc5", "application/x-pc5");
        map.put(".pci", "application/x-pci");
        map.put(".pcl", "application/x-pcl");
        map.put(".pcx", "application/x-pcx");
        map.put(".pdf", "application/pdf");
        //map.put(".pdf","application/pdf");
        map.put(".pdx", "application/vnd.adobe.pdx");
        map.put(".pfx", "application/x-pkcs12");
        map.put(".pgl", "application/x-pgl");
        map.put(".pic", "application/x-pic");
        map.put(".pko", "application/vnd.ms-pki.pko");
        map.put(".pl", "application/x-perl");
        map.put(".plg", "text/html");
        map.put(".pls", "audio/scpls");
        map.put(".plt", "application/x-plt");
        map.put(".png", "image/png");
        //map.put(".png","application/x-png");
        map.put(".pot", "application/vnd.ms-powerpoint");
        map.put(".ppa", "application/vnd.ms-powerpoint");
        map.put(".ppm", "application/x-ppm");
        map.put(".pps", "application/vnd.ms-powerpoint");
        map.put(".ppt", "application/vnd.ms-powerpoint");
        //map.put(".ppt","application/x-ppt");
        map.put(".pr", "application/x-pr");
        map.put(".prf", "application/pics-rules");
        map.put(".prn", "application/x-prn");
        map.put(".prt", "application/x-prt");
        map.put(".ps", "application/x-ps");
        //map.put(".ps","application/postscript");
        map.put(".ptn", "application/x-ptn");
        map.put(".pwz", "application/vnd.ms-powerpoint");
        map.put(".r3t", "text/vnd.rn-realtext3d");
        map.put(".ra", "audio/vnd.rn-realaudio");
        map.put(".ram", "audio/x-pn-realaudio");
        map.put(".ras", "application/x-ras");
        map.put(".rat", "application/rat-file");
        map.put(".rdf", "text/xml");
        map.put(".rec", "application/vnd.rn-recording");
        map.put(".red", "application/x-red");
        map.put(".rgb", "application/x-rgb");
        map.put(".rjs", "application/vnd.rn-realsystem-rjs");
        map.put(".rjt", "application/vnd.rn-realsystem-rjt");
        map.put(".rlc", "application/x-rlc");
        map.put(".rle", "application/x-rle");
        map.put(".rm", "application/vnd.rn-realmedia");
        map.put(".rmf", "application/vnd.adobe.rmf");
        map.put(".rmi", "audio/mid");
        map.put(".rmj", "application/vnd.rn-realsystem-rmj");
        map.put(".rmm", "audio/x-pn-realaudio");
        map.put(".rmp", "application/vnd.rn-rn_music_package");
        map.put(".rms", "application/vnd.rn-realmedia-secure");
        map.put(".rmvb", "application/vnd.rn-realmedia-vbr");
        map.put(".rmx", "application/vnd.rn-realsystem-rmx");
        map.put(".rnx", "application/vnd.rn-realplayer");
        map.put(".rp", "image/vnd.rn-realpix");
        map.put(".rpm", "audio/x-pn-realaudio-plugin");
        map.put(".rsml", "application/vnd.rn-rsml");
        map.put(".rt", "text/vnd.rn-realtext");
        map.put(".rtf", "application/msword");
        //map.put(".rtf","application/x-rtf");
        map.put(".rv", "video/vnd.rn-realvideo");
        map.put(".sam", "application/x-sam");
        map.put(".sat", "application/x-sat");
        map.put(".sdp", "application/sdp");
        map.put(".sdw", "application/x-sdw");
        map.put(".sit", "application/x-stuffit");
        map.put(".slb", "application/x-slb");
        map.put(".sld", "application/x-sld");
        map.put(".slk", "drawing/x-slk");
        map.put(".smi", "application/smil");
        map.put(".smil", "application/smil");
        map.put(".smk", "application/x-smk");
        map.put(".snd", "audio/basic");
        map.put(".sol", "text/plain");
        map.put(".sor", "text/plain");
        map.put(".spc", "application/x-pkcs7-certificates");
        map.put(".spl", "application/futuresplash");
        map.put(".spp", "text/xml");
        map.put(".ssm", "application/streamingmedia");
        map.put(".sst", "application/vnd.ms-pki.certstore");
        map.put(".stl", "application/vnd.ms-pki.stl");
        map.put(".stm", "text/html");
        map.put(".sty", "application/x-sty");
        map.put(".svg", "text/xml");
        map.put(".swf", "application/x-shockwave-flash");
        map.put(".tdf", "application/x-tdf");
        map.put(".tg4", "application/x-tg4");
        map.put(".tga", "application/x-tga");
        //map.put(".tif","image/tiff");
        //map.put(".tif","application/x-tif");
        map.put(".tiff", "image/tiff");
        map.put(".tld", "text/xml");
        map.put(".top", "drawing/x-top");
        map.put(".torrent", "application/x-bittorrent");
        map.put(".tsd", "text/xml");
        map.put(".txt", "text/plain");
        map.put(".uin", "application/x-icq");
        map.put(".uls", "text/iuls");
        map.put(".vcf", "text/x-vcard");
        map.put(".vda", "application/x-vda");
        map.put(".vdx", "application/vnd.visio");
        map.put(".vml", "text/xml");
        map.put(".vpg", "application/x-vpeg005");
        map.put(".vsd", "application/vnd.visio");
        //map.put(".vsd","application/x-vsd");
        map.put(".vss", "application/vnd.visio");
        map.put(".vst", "application/vnd.visio");
        //map.put(".vst","application/x-vst");
        map.put(".vsw", "application/vnd.visio");
        map.put(".vsx", "application/vnd.visio");
        map.put(".vtx", "application/vnd.visio");
        map.put(".vxml", "text/xml");
        map.put(".wav", "audio/wav");
        map.put(".wax", "audio/x-ms-wax");
        map.put(".wb1", "application/x-wb1");
        map.put(".wb2", "application/x-wb2");
        map.put(".wb3", "application/x-wb3");
        map.put(".wbmp", "image/vnd.wap.wbmp");
        map.put(".wiz", "application/msword");
        map.put(".wk3", "application/x-wk3");
        map.put(".wk4", "application/x-wk4");
        map.put(".wkq", "application/x-wkq");
        map.put(".wks", "application/x-wks");
        map.put(".wm", "video/x-ms-wm");
        map.put(".wma", "audio/x-ms-wma");
        map.put(".wmd", "application/x-ms-wmd");
        map.put(".wmf", "application/x-wmf");
        map.put(".wml", "text/vnd.wap.wml");
        map.put(".wmv", "video/x-ms-wmv");
        map.put(".wmx", "video/x-ms-wmx");
        map.put(".wmz", "application/x-ms-wmz");
        map.put(".wp6", "application/x-wp6");
        map.put(".wpd", "application/x-wpd");
        map.put(".wpg", "application/x-wpg");
        map.put(".wpl", "application/vnd.ms-wpl");
        map.put(".wq1", "application/x-wq1");
        map.put(".wr1", "application/x-wr1");
        map.put(".wri", "application/x-wri");
        map.put(".wrk", "application/x-wrk");
        map.put(".ws", "application/x-ws");
        map.put(".ws2", "application/x-ws");
        map.put(".wsc", "text/scriptlet");
        map.put(".wsdl", "text/xml");
        map.put(".wvx", "video/x-ms-wvx");
        map.put(".xdp", "application/vnd.adobe.xdp");
        map.put(".xdr", "text/xml");
        map.put(".xfd", "application/vnd.adobe.xfd");
        map.put(".xfdf", "application/vnd.adobe.xfdf");
        map.put(".xhtml", "text/html");
        map.put(".xls", "application/vnd.ms-excel");
        //map.put(".xls","application/x-xls");
        map.put(".xlw", "application/x-xlw");
        map.put(".xml", "text/xml");
        map.put(".xpl", "audio/scpls");
        map.put(".xq", "text/xml");
        map.put(".xql", "text/xml");
        map.put(".xquery", "text/xml");
        map.put(".xsd", "text/xml");
        map.put(".xsl", "text/xml");
        map.put(".xslt", "text/xml");
        map.put(".xwd", "application/x-xwd");
        map.put(".x_b", "application/x-x_b");
        map.put(".sis", "application/vnd.symbian.install");
        map.put(".sisx", "application/vnd.symbian.install");
        map.put(".x_t", "application/x-x_t");
        map.put(".ipa", "application/vnd.iphone");
        map.put(".apk", "application/vnd.android.package-archive");
        map.put(".xap", "application/x-silverlight-app");
    }

    /**
     * 、
     * 根据文件后缀名获取contentType
     */
    public static String getContentTypeByMap(String type) {
        type = type.contains(".") ? type : "." + type;
        String contentType = map.get(type);
        if (StringUtils.isEmpty(contentType)) {
            contentType = map.get("other");
        }
        return contentType;
    }
}



3.如何使用

image-20221215143233079

image-20221215143307277

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