package com.huaheng.common.utils.file; import com.huaheng.common.exception.file.FileNameLengthLimitExceededException; import com.huaheng.framework.config.HuaHengConfig; import org.apache.commons.fileupload.FileUploadBase; import org.apache.shiro.crypto.hash.Md5Hash; import org.springframework.web.multipart.MultipartFile; import java.io.File; import java.io.FileNotFoundException; import java.io.IOException; /** * 文件上传工具类 * * @author huaheng */ public class FileUploadUtils { /** * 默认大小 50M */ public static final long DEFAULT_MAX_SIZE = 52428800; /** * 默认上传的地址 */ private static String defaultBaseDir = HuaHengConfig.getProfile(); /** * 默认的文件名最大长度 */ public static final int DEFAULT_FILE_NAME_LENGTH = 200; /** * 默认文件类型jpg */ public static final String IMAGE_JPG_EXTENSION = ".jpg"; /** * 图片类型png */ public static final String IMAGE_PNG_EXTENSION = ".png"; /** * 图片类型ico */ public static final String IMAGE_ICO_EXTENSION = ".ico"; private static int counter = 0; public static void setDefaultBaseDir(String defaultBaseDir) { FileUploadUtils.defaultBaseDir = defaultBaseDir; } public static String getDefaultBaseDir() { return defaultBaseDir; } /** * 以默认配置进行文件上传 * * @param file 上传的文件 * @return 文件名称 * @throws Exception */ public static final String upload(MultipartFile file) throws IOException { try { return upload(getDefaultBaseDir(), file, FileUploadUtils.IMAGE_JPG_EXTENSION); } catch (Exception e) { throw new IOException(e); } } /** * 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, FileUploadUtils.IMAGE_JPG_EXTENSION); } catch (Exception e) { throw new IOException(e); } } /** * 文件上传 * * @param baseDir 相对应用的基目录 * @param file 上传的文件 * @param needDatePathAndRandomName 是否需要日期目录和随机文件名前缀 * @param extension 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 */ public static final String upload(String baseDir, MultipartFile file, String extension) throws FileUploadBase.FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException { int fileNamelength = file.getOriginalFilename().length(); if (fileNamelength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH) { throw new FileNameLengthLimitExceededException(file.getOriginalFilename(), fileNamelength, FileUploadUtils.DEFAULT_FILE_NAME_LENGTH); } assertAllowed(file); String fileName = encodingFilename(file.getOriginalFilename(), extension); File desc = getAbsoluteFile(baseDir, baseDir + fileName); file.transferTo(desc); return fileName; } private static final File getAbsoluteFile(String uploadDir, String filename) throws IOException { File desc = new File(File.separator + filename); if (!desc.getParentFile().exists()) { desc.getParentFile().mkdirs(); } if (!desc.exists()) { // desc.createNewFile(); } return desc; } public static final String upload(String baseDir, MultipartFile file, int log) throws FileUploadBase.FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException { int fileNamelength = file.getOriginalFilename().length(); if (fileNamelength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH) { throw new FileNameLengthLimitExceededException(file.getOriginalFilename(), fileNamelength, FileUploadUtils.DEFAULT_FILE_NAME_LENGTH); } assertAllowed(file); String fileName = file.getOriginalFilename(); File desc = getAbsoluteFile(baseDir, baseDir + fileName); file.transferTo(desc); return fileName; } /** * 编码文件名 */ private static final String encodingFilename(String filename, String extension) { filename = filename.replace("_", " "); filename = new Md5Hash(filename + System.nanoTime() + counter++).toHex().toString() + extension; return filename; } /** * 文件大小校验 * * @param file 上传的文件 * @return * @throws FileSizeLimitExceededException 如果超出最大大小 */ public static final void assertAllowed(MultipartFile file) throws FileUploadBase.FileSizeLimitExceededException { long size = file.getSize(); if (DEFAULT_MAX_SIZE != -1 && size > DEFAULT_MAX_SIZE) { throw new FileUploadBase.FileSizeLimitExceededException("not allowed upload upload", size, DEFAULT_MAX_SIZE); } } /** * 公司logo,icon图片上传路径 * @return * @throws FileNotFoundException */ public static String getCorporationUploadPath() throws FileNotFoundException { //上传到resource/static/corporation目录下,jar包布署时无法实现 // String path = ResourceUtils.getURL("classpath:").getPath()+"static/"; //上传到huangheng.profile配置的目录下 String path = getDefaultBaseDir(); return path; } }