两种上传图片的方式——91张先生

上传图片的两种方式

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前言

每个程序员貌似对上传图片都有一种执念，感觉一个项目有了上传图片上传文件的功能就很难，今天就给大家分享一下怎么上传图片，直接上干货

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一、直接上传到项目jar包根目录

工具类的方法

/**




/**
     * 获取上传路径
     */
    public static String getUploadPath()
    {
        return getProfile() + "/upload";
    }

     * 通用上传请求（单个）
     */
    @PostMapping("/upload")
    public AjaxResult uploadFile(MultipartFile file) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", url);
            ajax.put("fileName", fileName);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

Untils

 

public static final String[] DEFAULT_ALLOWED_EXTENSION = {
            // 图片
            "bmp", "gif", "jpg", "jpeg", "png",
            // word excel powerpoint
            "doc", "docx", "xls", "xlsx", "ppt", "pptx", "html", "htm", "txt",
            // 压缩文件
            "rar", "zip", "gz", "bz2",
            // 视频格式
            "mp4", "avi", "rmvb",
            // pdf
            "pdf" };






/**
     * 根据文件路径上传
     *
     * @param baseDir 相对应用的基目录
     * @param file 上传的文件
     * @return 文件名称
     * @throws IOException
     */
    public static final String upload(String baseDir, MultipartFile file) throws IOException
    {
        try
        {
            return upload(baseDir, file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
        }
        catch (Exception e)
        {
            throw new IOException(e.getMessage(), e);
        }
    }


/**
     * 默认的文件名最大长度 100
     */
    public static final int DEFAULT_FILE_NAME_LENGTH = 100;
/**
     * 文件上传
     *
     * @param baseDir 相对应用的基目录
     * @param file 上传的文件
     * @param allowedExtension 上传文件类型
     * @return 返回上传成功的文件名
     * @throws FileSizeLimitExceededException 如果超出最大大小
     * @throws FileNameLengthLimitExceededException 文件名太长
     * @throws IOException 比如读写文件出错时
     * @throws InvalidExtensionException 文件校验异常
     */
    public static final String upload(String baseDir, MultipartFile file, String[] allowedExtension)
            throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
            InvalidExtensionException
    {
        return upload(baseDir, file, allowedExtension, false);
    }
    
    /**
     * 文件上传
     *
     * @param baseDir 相对应用的基目录
     * @param file 上传的文件
     * @param useCustomNaming 系统自定义文件名
     * @param allowedExtension 上传文件类型
     * @return 返回上传成功的文件名
     * @throws FileSizeLimitExceededException 如果超出最大大小
     * @throws FileNameLengthLimitExceededException 文件名太长
     * @throws IOException 比如读写文件出错时
     * @throws InvalidExtensionException 文件校验异常
     */
    public static final String upload(String baseDir, MultipartFile file, String[] allowedExtension, boolean useCustomNaming)
            throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
            InvalidExtensionException
    {
        int fileNameLength = Objects.requireNonNull(file.getOriginalFilename()).length();
        if (fileNameLength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH)
        {
            throw new FileNameLengthLimitExceededException(FileUploadUtils.DEFAULT_FILE_NAME_LENGTH);
        }

        assertAllowed(file, allowedExtension);

        String fileName = useCustomNaming ? uuidFilename(file) : extractFilename(file);

        String absPath = getAbsoluteFile(baseDir, fileName).getAbsolutePath();
        file.transferTo(Paths.get(absPath));
        return getPathFileName(baseDir, fileName);
    }


 /**
     * 默认大小 50M
     */
    public static final long DEFAULT_MAX_SIZE = 50 * 1024 * 1024L;


    public static final String[] IMAGE_EXTENSION = { "bmp", "gif", "jpg", "jpeg", "png" };

 public static final String[] FLASH_EXTENSION = { "swf", "flv" };

    public static final String[] MEDIA_EXTENSION = { "swf", "flv", "mp3", "wav", "wma", "wmv", "mid", "avi", "mpg",
            "asf", "rm", "rmvb" };

    public static final String[] VIDEO_EXTENSION = { "mp4", "avi", "rmvb" };
    /**
     * 文件大小校验
     *
     * @param file 上传的文件
     * @return
     * @throws FileSizeLimitExceededException 如果超出最大大小
     * @throws InvalidExtensionException
     */
    public static final void assertAllowed(MultipartFile file, String[] allowedExtension)
            throws FileSizeLimitExceededException, InvalidExtensionException
    {
        long size = file.getSize();
        if (size > DEFAULT_MAX_SIZE)
        {
            throw new FileSizeLimitExceededException(DEFAULT_MAX_SIZE / 1024 / 1024);
        }

        String fileName = file.getOriginalFilename();
        String extension = getExtension(file);
        if (allowedExtension != null && !isAllowedExtension(extension, allowedExtension))
        {
            if (allowedExtension == MimeTypeUtils.IMAGE_EXTENSION)
            {
                throw new InvalidExtensionException.InvalidImageExtensionException(allowedExtension, extension,
                        fileName);
            }
            else if (allowedExtension == MimeTypeUtils.FLASH_EXTENSION)
            {
                throw new InvalidExtensionException.InvalidFlashExtensionException(allowedExtension, extension,
                        fileName);
            }
            else if (allowedExtension == MimeTypeUtils.MEDIA_EXTENSION)
            {
                throw new InvalidExtensionException.InvalidMediaExtensionException(allowedExtension, extension,
                        fileName);
            }
            else if (allowedExtension == MimeTypeUtils.VIDEO_EXTENSION)
            {
                throw new InvalidExtensionException.InvalidVideoExtensionException(allowedExtension, extension,
                        fileName);
            }
            else
            {
                throw new InvalidExtensionException(allowedExtension, extension, fileName);
            }
        }
    }


    /**
     * 编编码文件名(日期格式目录 + UUID + 后缀)
     */
    public static final String uuidFilename(MultipartFile file)
    {
        return StringUtils.format("{}/{}.{}", DateUtils.datePath(), IdUtils.fastSimpleUUID(), getExtension(file));
    }

    public static final File getAbsoluteFile(String uploadDir, String fileName) throws IOException
    {
        File desc = new File(uploadDir + File.separator + fileName);

        if (!desc.exists())
        {
            if (!desc.getParentFile().exists())
            {
                desc.getParentFile().mkdirs();
            }
        }
        return desc;
    }


    /**
     * 编码文件名(日期格式目录 + 原文件名 + 序列值 + 后缀)
     */
    public static final String extractFilename(MultipartFile file)
    {
        return StringUtils.format("{}/{}_{}.{}", DateUtils.datePath(), FilenameUtils.getBaseName(file.getOriginalFilename()), Seq.getId(Seq.uploadSeqType), getExtension(file));
    }


    public static final File getAbsoluteFile(String uploadDir, String fileName) throws IOException
    {
        File desc = new File(uploadDir + File.separator + fileName);

        if (!desc.exists())
        {
            if (!desc.getParentFile().exists())
            {
                desc.getParentFile().mkdirs();
            }
        }
        return desc;
    }

   /**
     * 资源映射路径 前缀
     */
    public static final String RESOURCE_PREFIX = "/profile";

    public static final String getPathFileName(String uploadDir, String fileName) throws IOException
    {
        int dirLastIndex = getProfile().length() + 1;
        String currentDir = StringUtils.substring(uploadDir, dirLastIndex);
        return Constants.RESOURCE_PREFIX + "/" + currentDir + "/" + fileName;
    }

二、上传到MinIo

搭建MinIo服务就跳过了，宝塔直接一分钟搭建，然后创建Bruck

Controller

/**
     * 上传OSS对象存储
     *
     * @param file 文件
     */
    @SaCheckPermission("system:oss:upload")
    @Log(title = "OSS对象存储", businessType = BusinessType.INSERT)
    @PostMapping(value = "/upload", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
    public R<SysOssUploadVo> upload(@RequestPart("file") MultipartFile file) {
        if (ObjectUtil.isNull(file)) {
            return R.fail("上传文件不能为空");
        }
        SysOssVo oss = ossService.upload(file);
        SysOssUploadVo uploadVo = new SysOssUploadVo();
        uploadVo.setUrl(oss.getUrl());
        uploadVo.setFileName(oss.getOriginalName());
        uploadVo.setOssId(oss.getOssId().toString());
        return R.ok(uploadVo);
    }

    /**
     * 下载OSS对象
     *
     * @param ossId OSS对象ID
     */
    @SaCheckPermission("system:oss:download")
    @GetMapping("/download/{ossId}")
    public void download(@PathVariable Long ossId, HttpServletResponse response) throws IOException {
        ossService.download(ossId, response);
    }

Service

@Override
    public SysOssVo upload(MultipartFile file) {
        String originalfileName = file.getOriginalFilename();
        String suffix = StringUtils.substring(originalfileName, originalfileName.lastIndexOf("."), originalfileName.length());
        OssClient storage = OssFactory.instance();
        UploadResult uploadResult;
        try {
            uploadResult = storage.uploadSuffix(file.getBytes(), suffix, file.getContentType());
        } catch (IOException e) {
            throw new ServiceException(e.getMessage());
        }
        SysOssExt ext1 = new SysOssExt();
        ext1.setFileSize(file.getSize());
        ext1.setContentType(file.getContentType());
        // 保存文件信息
        return buildResultEntity(originalfileName, suffix, storage.getConfigKey(), uploadResult, ext1);
    }

 /**
     * 上传 byte[] 数据到 Amazon S3，使用指定的后缀构造对象键。
     *
     * @param data   要上传的 byte[] 数据
     * @param suffix 对象键的后缀
     * @return UploadResult 包含上传后的文件信息
     * @throws OssException 如果上传失败，抛出自定义异常
     */
    public UploadResult uploadSuffix(byte[] data, String suffix, String contentType) {
        return upload(new ByteArrayInputStream(data), getPath(properties.getPrefix(), suffix), Long.valueOf(data.length), contentType);
    }

    public static final String SLASH = "/";
    /**
     * 上传 InputStream 到 Amazon S3
     *
     * @param inputStream 要上传的输入流
     * @param key         在 Amazon S3 中的对象键
     * @param length      输入流的长度
     * @param contentType 文件内容类型
     * @return UploadResult 包含上传后的文件信息
     * @throws OssException 如果上传失败，抛出自定义异常
     */
    public UploadResult upload(InputStream inputStream, String key, Long length, String contentType) {
        // 如果输入流不是 ByteArrayInputStream，则将其读取为字节数组再创建 ByteArrayInputStream
        if (!(inputStream instanceof ByteArrayInputStream)) {
            inputStream = new ByteArrayInputStream(IoUtil.readBytes(inputStream));
        }
        try {
            // 创建异步请求体（length如果为空会报错）
            BlockingInputStreamAsyncRequestBody body = BlockingInputStreamAsyncRequestBody.builder()
                .contentLength(length)
                .subscribeTimeout(Duration.ofSeconds(120))
                .build();

            // 使用 transferManager 进行上传
            Upload upload = transferManager.upload(
                x -> x.requestBody(body).addTransferListener(LoggingTransferListener.create())
                    .putObjectRequest(
                        y -> y.bucket(properties.getBucketName())
                            .key(key)
                            .contentType(contentType)
                            // 用于设置对象的访问控制列表（ACL）。不同云厂商对ACL的支持和实现方式有所不同，
                            // 因此根据具体的云服务提供商，你可能需要进行不同的配置（自行开启，阿里云有acl权限配置，腾讯云没有acl权限配置）
                            //.acl(getAccessPolicy().getObjectCannedACL())
                            .build())
                    .build());

            // 将输入流写入请求体
            body.writeInputStream(inputStream);

            // 等待文件上传操作完成
            CompletedUpload uploadResult = upload.completionFuture().join();
            String eTag = uploadResult.response().eTag();

            // 提取上传结果中的 ETag，并构建一个自定义的 UploadResult 对象
            return UploadResult.builder().url(getUrl() + StringUtils.SLASH + key).filename(key).eTag(eTag).build();
        } catch (Exception e) {
            throw new OssException("上传文件失败，请检查配置信息:[" + e.getMessage() + "]");
        }
    }

   
    @NotNull
    private SysOssVo buildResultEntity(String originalfileName, String suffix, String configKey, UploadResult uploadResult, SysOssExt ext1) {
        SysOss oss = new SysOss();
        oss.setUrl(uploadResult.getUrl());
        oss.setFileSuffix(suffix);
        oss.setFileName(uploadResult.getFilename());
        oss.setOriginalName(originalfileName);
        oss.setService(configKey);
        oss.setExt1(JsonUtils.toJsonString(ext1));
        baseMapper.insert(oss);
        SysOssVo sysOssVo = MapstructUtils.convert(oss, SysOssVo.class);
        return this.matchingUrl(sysOssVo);
    }

package org.dromara.common.oss.factory;

import lombok.extern.slf4j.Slf4j;
import org.dromara.common.core.constant.CacheNames;
import org.dromara.common.core.utils.StringUtils;
import org.dromara.common.json.utils.JsonUtils;
import org.dromara.common.oss.constant.OssConstant;
import org.dromara.common.oss.core.OssClient;
import org.dromara.common.oss.exception.OssException;
import org.dromara.common.oss.properties.OssProperties;
import org.dromara.common.redis.utils.CacheUtils;
import org.dromara.common.redis.utils.RedisUtils;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.ReentrantLock;

/**
 * 文件上传Factory
 *
 * @author ZZW
 */
@Slf4j
public class OssFactory {

    /**
     * 全局 redis key (业务无关的key)
     */
    String GLOBAL_REDIS_KEY = "global:";


 /**
     * 默认配置KEY
     */
    String DEFAULT_CONFIG_KEY = GlobalConstants.GLOBAL_REDIS_KEY + "sys_oss:default_config";



    private static final Map<String, OssClient> CLIENT_CACHE = new ConcurrentHashMap<>();
    private static final ReentrantLock LOCK = new ReentrantLock();

    /**
     * 获取默认实例
     */
    public static OssClient instance() {
        // 获取redis 默认类型
        String configKey = RedisUtils.getCacheObject(OssConstant.DEFAULT_CONFIG_KEY);
        if (StringUtils.isEmpty(configKey)) {
            throw new OssException("文件存储服务类型无法找到!");
        }
        return instance(configKey);
    }

    /**
     * 根据类型获取实例
     */
    public static OssClient instance(String configKey) {
        String json = CacheUtils.get(CacheNames.SYS_OSS_CONFIG, configKey);
        if (json == null) {
            throw new OssException("系统异常, '" + configKey + "'配置信息不存在!");
        }
        OssProperties properties = JsonUtils.parseObject(json, OssProperties.class);
        // 使用租户标识避免多个租户相同key实例覆盖
        String key = configKey;
        if (StringUtils.isNotBlank(properties.getTenantId())) {
            key = properties.getTenantId() + ":" + configKey;
        }
        OssClient client = CLIENT_CACHE.get(key);
        // 客户端不存在或配置不相同则重新构建
        if (client == null || !client.checkPropertiesSame(properties)) {
            LOCK.lock();
            try {
                client = CLIENT_CACHE.get(key);
                if (client == null || !client.checkPropertiesSame(properties)) {
                    CLIENT_CACHE.put(key, new OssClient(configKey, properties));
                    log.info("创建OSS实例 key => {}", configKey);
                    return CLIENT_CACHE.get(key);
                }
            } finally {
                LOCK.unlock();
            }
        }
        return client;
    }

}

@Override
    public void init() {
        List<SysOssConfig> list = baseMapper.selectList();
        // 加载OSS初始化配置
        for (SysOssConfig config : list) {
            String configKey = config.getConfigKey();
            if ("0".equals(config.getStatus())) {
                RedisUtils.setCacheObject(OssConstant.DEFAULT_CONFIG_KEY, configKey);
            }
            CacheUtils.put(CacheNames.SYS_OSS_CONFIG, config.getConfigKey(), JsonUtils.toJsonString(config));
        }
    }

package org.dromara.common.oss.constant;

import org.dromara.common.core.constant.GlobalConstants;

import java.util.Arrays;
import java.util.List;

/**
 * 对象存储常量
 *
 * @author ZZW
 */
public interface OssConstant {

    /**
     * 默认配置KEY
     */
    String DEFAULT_CONFIG_KEY = GlobalConstants.GLOBAL_REDIS_KEY + "sys_oss:default_config";

    /**
     * 预览列表资源开关Key
     */
    String PEREVIEW_LIST_RESOURCE_KEY = "sys.oss.previewListResource";

    /**
     * 系统数据ids
     */
    List<Long> SYSTEM_DATA_IDS = Arrays.asList(1L, 2L, 3L, 4L);

    /**
     * 云服务商
     */
    String[] CLOUD_SERVICE = new String[] {"aliyun", "qcloud", "qiniu", "obs"};

    /**
     * https 状态
     */
    String IS_HTTPS = "Y";

}

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总结

两种方式都可以，第一种更倾向于小数量，在项目下存储，第二种更倾向于大数据量存储，使用OSS上传