| | |
| | | import java.nio.charset.StandardCharsets; |
| | | import javax.servlet.http.HttpServletRequest; |
| | | import javax.servlet.http.HttpServletResponse; |
| | | |
| | | import org.apache.commons.io.IOUtils; |
| | | import org.apache.commons.lang3.ArrayUtils; |
| | | import com.ruoyi.common.config.ARDConfig; |
| | |
| | | |
| | | /** |
| | | * 文件处理工具类 |
| | | * |
| | | * |
| | | * @author ruoyi |
| | | */ |
| | | public class FileUtils |
| | | { |
| | | public class FileUtils { |
| | | public static String FILENAME_PATTERN = "[a-zA-Z0-9_\\-\\|\\.\\u4e00-\\u9fa5]+"; |
| | | |
| | | /** |
| | | * 输出指定文件的byte数组 |
| | | * |
| | | * |
| | | * @param filePath 文件路径 |
| | | * @param os 输出流 |
| | | * @param os 输出流 |
| | | * @return |
| | | */ |
| | | public static void writeBytes(String filePath, OutputStream os) throws IOException |
| | | { |
| | | public static void writeBytes(String filePath, OutputStream os) throws IOException { |
| | | FileInputStream fis = null; |
| | | try |
| | | { |
| | | try { |
| | | File file = new File(filePath); |
| | | if (!file.exists()) |
| | | { |
| | | if (!file.exists()) { |
| | | throw new FileNotFoundException(filePath); |
| | | } |
| | | fis = new FileInputStream(file); |
| | | byte[] b = new byte[1024]; |
| | | int length; |
| | | while ((length = fis.read(b)) > 0) |
| | | { |
| | | while ((length = fis.read(b)) > 0) { |
| | | os.write(b, 0, length); |
| | | } |
| | | } |
| | | catch (IOException e) |
| | | { |
| | | } catch (IOException e) { |
| | | throw e; |
| | | } |
| | | finally |
| | | { |
| | | } finally { |
| | | IOUtils.close(os); |
| | | IOUtils.close(fis); |
| | | } |
| | |
| | | * @return 目标文件 |
| | | * @throws IOException IO异常 |
| | | */ |
| | | public static String writeImportBytes(byte[] data) throws IOException |
| | | { |
| | | public static String writeImportBytes(byte[] data) throws IOException { |
| | | return writeBytes(data, ARDConfig.getImportPath()); |
| | | } |
| | | |
| | | /** |
| | | * 写数据到文件中 |
| | | * |
| | | * @param data 数据 |
| | | * @param data 数据 |
| | | * @param uploadDir 目标文件 |
| | | * @return 目标文件 |
| | | * @throws IOException IO异常 |
| | | */ |
| | | public static String writeBytes(byte[] data, String uploadDir) throws IOException |
| | | { |
| | | public static String writeBytes(byte[] data, String uploadDir) throws IOException { |
| | | FileOutputStream fos = null; |
| | | String pathName = ""; |
| | | try |
| | | { |
| | | try { |
| | | String extension = getFileExtendName(data); |
| | | pathName = DateUtils.datePath() + "/" + IdUtils.fastUUID() + "." + extension; |
| | | File file = FileUploadUtils.getAbsoluteFile(uploadDir, pathName); |
| | | fos = new FileOutputStream(file); |
| | | fos.write(data); |
| | | } |
| | | finally |
| | | { |
| | | } finally { |
| | | IOUtils.close(fos); |
| | | } |
| | | return FileUploadUtils.getPathFileName(uploadDir, pathName); |
| | |
| | | |
| | | /** |
| | | * 删除文件 |
| | | * |
| | | * |
| | | * @param filePath 文件 |
| | | * @return |
| | | */ |
| | | public static boolean deleteFile(String filePath) |
| | | { |
| | | public static boolean deleteFile(String filePath) { |
| | | boolean flag = false; |
| | | File file = new File(filePath); |
| | | // 路径为文件且不为空则进行删除 |
| | | if (file.isFile() && file.exists()) |
| | | { |
| | | if (file.isFile() && file.exists()) { |
| | | flag = file.delete(); |
| | | } |
| | | return flag; |
| | |
| | | |
| | | /** |
| | | * 文件名称验证 |
| | | * |
| | | * |
| | | * @param filename 文件名称 |
| | | * @return true 正常 false 非法 |
| | | */ |
| | | public static boolean isValidFilename(String filename) |
| | | { |
| | | public static boolean isValidFilename(String filename) { |
| | | return filename.matches(FILENAME_PATTERN); |
| | | } |
| | | |
| | | /** |
| | | * 检查文件是否可下载 |
| | | * |
| | | * |
| | | * @param resource 需要下载的文件 |
| | | * @return true 正常 false 非法 |
| | | */ |
| | | public static boolean checkAllowDownload(String resource) |
| | | { |
| | | public static boolean checkAllowDownload(String resource) { |
| | | // 禁止目录上跳级别 |
| | | if (StringUtils.contains(resource, "..")) |
| | | { |
| | | if (StringUtils.contains(resource, "..")) { |
| | | return false; |
| | | } |
| | | |
| | | // 检查允许下载的文件规则 |
| | | if (ArrayUtils.contains(MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION, FileTypeUtils.getFileType(resource))) |
| | | { |
| | | if (ArrayUtils.contains(MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION, FileTypeUtils.getFileType(resource))) { |
| | | return true; |
| | | } |
| | | |
| | |
| | | |
| | | /** |
| | | * 下载文件名重新编码 |
| | | * |
| | | * @param request 请求对象 |
| | | * |
| | | * @param request 请求对象 |
| | | * @param fileName 文件名 |
| | | * @return 编码后的文件名 |
| | | */ |
| | | public static String setFileDownloadHeader(HttpServletRequest request, String fileName) throws UnsupportedEncodingException |
| | | { |
| | | public static String setFileDownloadHeader(HttpServletRequest request, String fileName) throws UnsupportedEncodingException { |
| | | final String agent = request.getHeader("USER-AGENT"); |
| | | String filename = fileName; |
| | | if (agent.contains("MSIE")) |
| | | { |
| | | if (agent.contains("MSIE")) { |
| | | // IE浏览器 |
| | | filename = URLEncoder.encode(filename, "utf-8"); |
| | | filename = filename.replace("+", " "); |
| | | } |
| | | else if (agent.contains("Firefox")) |
| | | { |
| | | } else if (agent.contains("Firefox")) { |
| | | // 火狐浏览器 |
| | | filename = new String(fileName.getBytes(), "ISO8859-1"); |
| | | } |
| | | else if (agent.contains("Chrome")) |
| | | { |
| | | } else if (agent.contains("Chrome")) { |
| | | // google浏览器 |
| | | filename = URLEncoder.encode(filename, "utf-8"); |
| | | } |
| | | else |
| | | { |
| | | } else { |
| | | // 其它浏览器 |
| | | filename = URLEncoder.encode(filename, "utf-8"); |
| | | } |
| | |
| | | /** |
| | | * 下载文件名重新编码 |
| | | * |
| | | * @param response 响应对象 |
| | | * @param response 响应对象 |
| | | * @param realFileName 真实文件名 |
| | | */ |
| | | public static void setAttachmentResponseHeader(HttpServletResponse response, String realFileName) throws UnsupportedEncodingException |
| | | { |
| | | public static void setAttachmentResponseHeader(HttpServletResponse response, String realFileName) throws UnsupportedEncodingException { |
| | | String percentEncodedFileName = percentEncode(realFileName); |
| | | |
| | | StringBuilder contentDispositionValue = new StringBuilder(); |
| | |
| | | * @param s 需要百分号编码的字符串 |
| | | * @return 百分号编码后的字符串 |
| | | */ |
| | | public static String percentEncode(String s) throws UnsupportedEncodingException |
| | | { |
| | | public static String percentEncode(String s) throws UnsupportedEncodingException { |
| | | String encode = URLEncoder.encode(s, StandardCharsets.UTF_8.toString()); |
| | | return encode.replaceAll("\\+", "%20"); |
| | | } |
| | | |
| | | /** |
| | | * 获取图像后缀 |
| | | * |
| | | * |
| | | * @param photoByte 图像数据 |
| | | * @return 后缀名 |
| | | */ |
| | | public static String getFileExtendName(byte[] photoByte) |
| | | { |
| | | public static String getFileExtendName(byte[] photoByte) { |
| | | String strFileExtendName = "jpg"; |
| | | if ((photoByte[0] == 71) && (photoByte[1] == 73) && (photoByte[2] == 70) && (photoByte[3] == 56) |
| | | && ((photoByte[4] == 55) || (photoByte[4] == 57)) && (photoByte[5] == 97)) |
| | | { |
| | | && ((photoByte[4] == 55) || (photoByte[4] == 57)) && (photoByte[5] == 97)) { |
| | | strFileExtendName = "gif"; |
| | | } |
| | | else if ((photoByte[6] == 74) && (photoByte[7] == 70) && (photoByte[8] == 73) && (photoByte[9] == 70)) |
| | | { |
| | | } else if ((photoByte[6] == 74) && (photoByte[7] == 70) && (photoByte[8] == 73) && (photoByte[9] == 70)) { |
| | | strFileExtendName = "jpg"; |
| | | } |
| | | else if ((photoByte[0] == 66) && (photoByte[1] == 77)) |
| | | { |
| | | } else if ((photoByte[0] == 66) && (photoByte[1] == 77)) { |
| | | strFileExtendName = "bmp"; |
| | | } |
| | | else if ((photoByte[1] == 80) && (photoByte[2] == 78) && (photoByte[3] == 71)) |
| | | { |
| | | } else if ((photoByte[1] == 80) && (photoByte[2] == 78) && (photoByte[3] == 71)) { |
| | | strFileExtendName = "png"; |
| | | } |
| | | return strFileExtendName; |
| | |
| | | |
| | | /** |
| | | * 获取文件名称 /profile/upload/2022/04/16/ruoyi.png -- ruoyi.png |
| | | * |
| | | * |
| | | * @param fileName 路径名称 |
| | | * @return 没有文件路径的名称 |
| | | */ |
| | | public static String getName(String fileName) |
| | | { |
| | | if (fileName == null) |
| | | { |
| | | public static String getName(String fileName) { |
| | | if (fileName == null) { |
| | | return null; |
| | | } |
| | | int lastUnixPos = fileName.lastIndexOf('/'); |
| | |
| | | |
| | | /** |
| | | * 获取不带后缀文件名称 /profile/upload/2022/04/16/ruoyi.png -- ruoyi |
| | | * |
| | | * |
| | | * @param fileName 路径名称 |
| | | * @return 没有文件路径和后缀的名称 |
| | | */ |
| | | public static String getNameNotSuffix(String fileName) |
| | | { |
| | | if (fileName == null) |
| | | { |
| | | public static String getNameNotSuffix(String fileName) { |
| | | if (fileName == null) { |
| | | return null; |
| | | } |
| | | String baseName = FilenameUtils.getBaseName(fileName); |
| | | return baseName; |
| | | } |
| | | |
| | | /** |
| | | * 创建一个文件获取文件路径 |
| | | * |
| | | * @param fileName 路径名称 |
| | | * @return 文件路径和后缀的名称 |
| | | */ |
| | | public static String createFile(String fileName) { |
| | | try { |
| | | File file = new File(fileName); |
| | | if (!file.exists()) { |
| | | File fileParent = file.getParentFile(); |
| | | if (!fileParent.exists()) { |
| | | fileParent.mkdirs(); |
| | | } |
| | | file.createNewFile(); |
| | | } |
| | | return file.getCanonicalPath(); |
| | | |
| | | } catch (Exception ex) { |
| | | return ""; |
| | | } |
| | | } |
| | | } |