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+package com.zd.forward.util;
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+
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+import com.zd.common.core.exception.ServiceException;
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+import com.zd.common.core.exception.file.FileNameLengthLimitExceededException;
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+import com.zd.common.core.exception.file.FileSizeLimitExceededException;
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+import com.zd.common.core.exception.file.InvalidExtensionException;
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+import com.zd.common.core.utils.DateUtils;
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+import com.zd.common.core.utils.IdUtils;
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+import com.zd.common.core.utils.StringUtils;
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+import com.zd.common.core.utils.file.MimeTypeUtils;
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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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+
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+/**
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+ * 文件上传工具类
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+ *
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+ * @author zd
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+ */
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+public class FileUploadUtils {
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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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+ try {
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+ return upload(baseDir, file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
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+ } catch (Exception e) {
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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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+ int fileNamelength = file.getOriginalFilename().length();
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+ if (fileNamelength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH) {
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+// throw new FileNameLengthLimitExceededException(FileUploadUtils.DEFAULT_FILE_NAME_LENGTH);
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+ throw new ServiceException("图片名字太长，请修改名字后，从新上传!");
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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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+ File desc = getAbsoluteFile(baseDir, fileName);
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+ file.transferTo(desc);
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+ String pathFileName = getPathFileName(fileName);
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+ return pathFileName;
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+ }
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+//
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+// /**
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+// * 文件上传 -不修改文件名
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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 uploadNoUpdateName(String baseDir, MultipartFile file, String[] allowedExtension)
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+// throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
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+// InvalidExtensionException {
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+// int fileNamelength = file.getOriginalFilename().length();
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+// if (fileNamelength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH) {
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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 originalFilename = file.getOriginalFilename();
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+// File desc = getAbsoluteFile(baseDir, originalFilename);
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+// file.transferTo(desc);
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+// String pathFileName = getPathFileName(originalFilename);
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+// return pathFileName;
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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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+ String fileName = file.getOriginalFilename();
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+ String extension = getExtension(file);
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+ fileName = DateUtils.datePath() + "/" + IdUtils.fastUUID() + "." + extension;
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+ return fileName;
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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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+ File desc = new File(uploadDir + File.separator + fileName);
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+
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+ if (!desc.exists()) {
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+ if (!desc.getParentFile().exists()) {
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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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+ 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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+ long size = file.getSize();
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+ if (DEFAULT_MAX_SIZE != -1 && size > DEFAULT_MAX_SIZE) {
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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 = getExtension(file);
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+ if (allowedExtension != null && !isAllowedExtension(extension, allowedExtension)) {
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+ if (allowedExtension == MimeTypeUtils.IMAGE_EXTENSION) {
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+ throw new InvalidExtensionException.InvalidImageExtensionException(allowedExtension, extension,
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+ fileName);
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+ } else if (allowedExtension == MimeTypeUtils.FLASH_EXTENSION) {
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+ throw new InvalidExtensionException.InvalidFlashExtensionException(allowedExtension, extension,
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+ fileName);
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+ } else if (allowedExtension == MimeTypeUtils.MEDIA_EXTENSION) {
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+ throw new InvalidExtensionException.InvalidMediaExtensionException(allowedExtension, extension,
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+ fileName);
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+ } else if (allowedExtension == MimeTypeUtils.VIDEO_EXTENSION) {
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+ throw new InvalidExtensionException.InvalidVideoExtensionException(allowedExtension, extension,
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+ fileName);
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+ } else {
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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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+ for (String str : allowedExtension) {
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+ if (str.equalsIgnoreCase(extension)) {
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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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+ /**
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+ * 获取文件名的后缀
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+ *
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+ * @param file 表单文件
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+ * @return 后缀名
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+ */
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+ public static final String getExtension(MultipartFile file) {
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+ String extension = FilenameUtils.getExtension(file.getOriginalFilename());
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+ if (StringUtils.isEmpty(extension)) {
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+ extension = MimeTypeUtils.getExtension(file.getContentType());
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+ }
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+ return extension;
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+ }
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+}
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hecheng