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@@ -0,0 +1,186 @@
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+package com.xunmei.file.utils;
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+
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+import com.xunmei.common.core.exception.file.FileException;
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+import com.xunmei.common.core.exception.file.FileNameLengthLimitExceededException;
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+import com.xunmei.common.core.exception.file.FileSizeLimitExceededException;
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+import com.xunmei.common.core.exception.file.InvalidExtensionException;
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+import com.xunmei.common.core.utils.DateUtils;
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+import com.xunmei.common.core.utils.StringUtils;
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+import com.xunmei.common.core.utils.file.FileTypeUtils;
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+import com.xunmei.common.core.utils.file.MimeTypeUtils;
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+import com.xunmei.common.core.utils.uuid.Seq;
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+import org.apache.commons.io.FilenameUtils;
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+import org.springframework.web.multipart.MultipartFile;
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+
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+import java.io.File;
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+import java.io.IOException;
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+import java.nio.file.Paths;
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+import java.util.Objects;
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+
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+/**
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+ * 文件上传工具类
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+ *
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+ * @author xunmei
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+ */
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+public class FileUploadUtils
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+{
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+ /**
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+ * 默认大小 50M
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+ */
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+ public static final long DEFAULT_MAX_SIZE = 50 * 1024 * 1024;
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+
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+ /**
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+ * 默认的文件名最大长度 100
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+ */
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+ public static final int DEFAULT_FILE_NAME_LENGTH = 100;
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+
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+ /**
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+ * 根据文件路径上传
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+ *
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+ * @param baseDir 相对应用的基目录
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+ * @param file 上传的文件
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+ * @return 文件名称
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+ * @throws IOException
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+ */
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+ public static final String upload(String baseDir, MultipartFile file) throws IOException
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+ {
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+ try
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+ {
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+ return upload(baseDir, file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
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+ }
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+ catch (FileException fe)
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+ {
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+ throw new IOException(fe.getDefaultMessage(), fe);
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+ }
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+ catch (Exception e)
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+ {
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+ throw new IOException(e.getMessage(), e);
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+ }
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+ }
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+
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+ /**
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+ * 文件上传
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+ *
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+ * @param baseDir 相对应用的基目录
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+ * @param file 上传的文件
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+ * @param allowedExtension 上传文件类型
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+ * @return 返回上传成功的文件名
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+ * @throws FileSizeLimitExceededException 如果超出最大大小
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+ * @throws FileNameLengthLimitExceededException 文件名太长
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+ * @throws IOException 比如读写文件出错时
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+ * @throws InvalidExtensionException 文件校验异常
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+ */
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+ public static final String upload(String baseDir, MultipartFile file, String[] allowedExtension)
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+ throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
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+ InvalidExtensionException
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+ {
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+ int fileNamelength = Objects.requireNonNull(file.getOriginalFilename()).length();
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+ if (fileNamelength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH)
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+ {
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+ throw new FileNameLengthLimitExceededException(FileUploadUtils.DEFAULT_FILE_NAME_LENGTH);
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+ }
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+
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+ assertAllowed(file, allowedExtension);
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+
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+ String fileName = extractFilename(file);
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+
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+ String absPath = getAbsoluteFile(baseDir, fileName).getAbsolutePath();
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+ file.transferTo(Paths.get(absPath));
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+ return getPathFileName(fileName);
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+ }
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+
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+ /**
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+ * 编码文件名
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+ */
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+ public static final String extractFilename(MultipartFile file)
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+ {
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+ return StringUtils.format("{}/{}_{}.{}", DateUtils.datePath(),
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+ FilenameUtils.getBaseName(file.getOriginalFilename()), Seq.getId(Seq.uploadSeqType), FileTypeUtils.getExtension(file));
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+ }
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+
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+ private static final File getAbsoluteFile(String uploadDir, String fileName) throws IOException
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+ {
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+ File desc = new File(uploadDir + File.separator + fileName);
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+
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+ if (!desc.exists())
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+ {
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+ if (!desc.getParentFile().exists())
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+ {
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+ desc.getParentFile().mkdirs();
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+ }
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+ }
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+ return desc.isAbsolute() ? desc : desc.getAbsoluteFile();
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+ }
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+
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+ private static final String getPathFileName(String fileName) throws IOException
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+ {
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+ String pathFileName = "/" + fileName;
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+ return pathFileName;
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+ }
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+
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+ /**
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+ * 文件大小校验
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+ *
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+ * @param file 上传的文件
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+ * @throws FileSizeLimitExceededException 如果超出最大大小
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+ * @throws InvalidExtensionException 文件校验异常
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+ */
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+ public static final void assertAllowed(MultipartFile file, String[] allowedExtension)
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+ throws FileSizeLimitExceededException, InvalidExtensionException
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+ {
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+ long size = file.getSize();
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+ if (size > DEFAULT_MAX_SIZE)
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+ {
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+ throw new FileSizeLimitExceededException(DEFAULT_MAX_SIZE / 1024 / 1024);
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+ }
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+
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+ String fileName = file.getOriginalFilename();
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+ String extension = FileTypeUtils.getExtension(file);
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+ if (allowedExtension != null && !isAllowedExtension(extension, allowedExtension))
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+ {
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+ if (allowedExtension == MimeTypeUtils.IMAGE_EXTENSION)
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+ {
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+ throw new InvalidExtensionException.InvalidImageExtensionException(allowedExtension, extension,
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+ fileName);
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+ }
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+ else if (allowedExtension == MimeTypeUtils.FLASH_EXTENSION)
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+ {
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+ throw new InvalidExtensionException.InvalidFlashExtensionException(allowedExtension, extension,
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+ fileName);
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+ }
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+ else if (allowedExtension == MimeTypeUtils.MEDIA_EXTENSION)
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+ {
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+ throw new InvalidExtensionException.InvalidMediaExtensionException(allowedExtension, extension,
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+ fileName);
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+ }
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+ else if (allowedExtension == MimeTypeUtils.VIDEO_EXTENSION)
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+ {
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+ throw new InvalidExtensionException.InvalidVideoExtensionException(allowedExtension, extension,
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+ fileName);
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+ }
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+ else
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+ {
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+ throw new InvalidExtensionException(allowedExtension, extension, fileName);
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+ }
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+ }
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+ }
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+
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+ /**
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+ * 判断MIME类型是否是允许的MIME类型
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+ *
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+ * @param extension 上传文件类型
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+ * @param allowedExtension 允许上传文件类型
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+ * @return true/false
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+ */
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+ public static final boolean isAllowedExtension(String extension, String[] allowedExtension)
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+ {
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+ for (String str : allowedExtension)
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+ {
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+ if (str.equalsIgnoreCase(extension))
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+ {
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+ return true;
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+ }
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+ }
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+ return false;
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+ }
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+}
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