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| | | import java.io.File;
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| | | import java.io.FileInputStream;
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| | | import java.io.FileNotFoundException;
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| | | import java.io.FileOutputStream;
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| | | import java.io.IOException;
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| | | import java.io.OutputStream;
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| | | import java.io.UnsupportedEncodingException;
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| | | import java.net.URLEncoder;
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| | | import java.nio.charset.StandardCharsets;
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| | | import javax.servlet.http.HttpServletRequest;
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| | | import javax.servlet.http.HttpServletResponse;
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| | | import org.apache.commons.io.FilenameUtils;
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| | | import org.apache.commons.io.IOUtils;
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| | | import org.apache.commons.lang3.ArrayUtils;
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| | | import com.ruoyi.common.utils.DateUtils;
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| | | import com.ruoyi.common.utils.StringUtils;
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| | | import com.ruoyi.common.utils.uuid.IdUtils;
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| | | import com.ruoyi.framework.config.RuoYiConfig;
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| | |
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| | | /**
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| | | * 文件处理工具类
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| | |
| | | }
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| | | finally
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| | | {
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| | | if (os != null)
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| | | {
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| | | try
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| | | {
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| | | os.close();
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| | | }
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| | | catch (IOException e1)
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| | | {
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| | | e1.printStackTrace();
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| | | }
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| | | }
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| | | if (fis != null)
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| | | {
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| | | try
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| | | {
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| | | fis.close();
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| | | }
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| | | catch (IOException e1)
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| | | {
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| | | e1.printStackTrace();
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| | | }
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| | | }
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| | | IOUtils.close(os);
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| | | IOUtils.close(fis);
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| | | }
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| | | }
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| | |
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| | | /**
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| | | * 写数据到文件中
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| | | *
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| | | * @param data 数据
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| | | * @return 目标文件
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| | | * @throws IOException IO异常
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| | | */
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| | | public static String writeImportBytes(byte[] data) throws IOException
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| | | {
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| | | return writeBytes(data, RuoYiConfig.getImportPath());
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| | | }
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| | |
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| | | /**
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| | | * 写数据到文件中
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| | | *
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| | | * @param data 数据
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| | | * @param uploadDir 目标文件
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| | | * @return 目标文件
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| | | * @throws IOException IO异常
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| | | */
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| | | public static String writeBytes(byte[] data, String uploadDir) throws IOException
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| | | {
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| | | FileOutputStream fos = null;
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| | | String pathName = "";
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| | | try
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| | | {
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| | | String extension = getFileExtendName(data);
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| | | pathName = DateUtils.datePath() + "/" + IdUtils.fastUUID() + "." + extension;
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| | | File file = FileUploadUtils.getAbsoluteFile(uploadDir, pathName);
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| | | fos = new FileOutputStream(file);
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| | | fos.write(data);
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| | | }
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| | | finally
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| | | {
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| | | IOUtils.close(fos);
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| | | }
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| | | return FileUploadUtils.getPathFileName(uploadDir, pathName);
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| | | }
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| | |
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| | | /**
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| | |
| | | // 路径为文件且不为空则进行删除
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| | | if (file.isFile() && file.exists())
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| | | {
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| | | file.delete();
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| | | flag = true;
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| | | flag = file.delete();
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| | | }
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| | | return flag;
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| | | }
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| | |
| | | }
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| | |
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| | | /**
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| | | * 检查文件是否可下载
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| | | * |
| | | * @param resource 需要下载的文件
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| | | * @return true 正常 false 非法
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| | | */
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| | | public static boolean checkAllowDownload(String resource)
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| | | {
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| | | // 禁止目录上跳级别
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| | | if (StringUtils.contains(resource, ".."))
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| | | {
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| | | return false;
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| | | }
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| | |
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| | | // 检查允许下载的文件规则
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| | | if (ArrayUtils.contains(MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION, FileTypeUtils.getFileType(resource)))
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| | | {
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| | | return true;
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| | | }
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| | |
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| | | // 不在允许下载的文件规则
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| | | return false;
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| | | }
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| | |
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| | | /**
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| | | * 下载文件名重新编码
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| | | *
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| | | * @param request 请求对象
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| | | * @param fileName 文件名
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| | | * @return 编码后的文件名
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| | | */
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| | | public static String setFileDownloadHeader(HttpServletRequest request, String fileName)
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| | | throws UnsupportedEncodingException
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| | | public static String setFileDownloadHeader(HttpServletRequest request, String fileName) throws UnsupportedEncodingException
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| | | {
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| | | final String agent = request.getHeader("USER-AGENT");
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| | | String filename = fileName;
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| | |
| | | }
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| | | return filename;
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| | | }
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| | |
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| | | /**
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| | | * 下载文件名重新编码
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| | | *
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| | | * @param response 响应对象
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| | | * @param realFileName 真实文件名
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| | | */
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| | | public static void setAttachmentResponseHeader(HttpServletResponse response, String realFileName) throws UnsupportedEncodingException
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| | | {
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| | | String percentEncodedFileName = percentEncode(realFileName);
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| | |
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| | | StringBuilder contentDispositionValue = new StringBuilder();
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| | | contentDispositionValue.append("attachment; filename=")
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| | | .append(percentEncodedFileName)
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| | | .append(";")
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| | | .append("filename*=")
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| | | .append("utf-8''")
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| | | .append(percentEncodedFileName);
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| | |
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| | | response.addHeader("Access-Control-Expose-Headers", "Content-Disposition,download-filename");
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| | | response.setHeader("Content-disposition", contentDispositionValue.toString());
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| | | response.setHeader("download-filename", percentEncodedFileName);
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| | | }
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| | |
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| | | /**
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| | | * 百分号编码工具方法
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| | | *
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| | | * @param s 需要百分号编码的字符串
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| | | * @return 百分号编码后的字符串
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| | | */
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| | | public static String percentEncode(String s) throws UnsupportedEncodingException
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| | | {
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| | | String encode = URLEncoder.encode(s, StandardCharsets.UTF_8.toString());
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| | | return encode.replaceAll("\\+", "%20");
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| | | }
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| | |
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| | | /**
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| | | * 获取图像后缀
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| | | * |
| | | * @param photoByte 图像数据
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| | | * @return 后缀名
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| | | */
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| | | public static String getFileExtendName(byte[] photoByte)
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| | | {
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| | | String strFileExtendName = "jpg";
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| | | if ((photoByte[0] == 71) && (photoByte[1] == 73) && (photoByte[2] == 70) && (photoByte[3] == 56)
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| | | && ((photoByte[4] == 55) || (photoByte[4] == 57)) && (photoByte[5] == 97))
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| | | {
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| | | strFileExtendName = "gif";
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| | | }
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| | | else if ((photoByte[6] == 74) && (photoByte[7] == 70) && (photoByte[8] == 73) && (photoByte[9] == 70))
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| | | {
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| | | strFileExtendName = "jpg";
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| | | }
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| | | else if ((photoByte[0] == 66) && (photoByte[1] == 77))
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| | | {
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| | | strFileExtendName = "bmp";
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| | | }
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| | | else if ((photoByte[1] == 80) && (photoByte[2] == 78) && (photoByte[3] == 71))
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| | | {
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| | | strFileExtendName = "png";
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| | | }
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| | | return strFileExtendName;
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| | | }
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| | |
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| | | /**
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| | | * 获取文件名称 /profile/upload/2022/04/16/ruoyi.png -- ruoyi.png
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| | | * |
| | | * @param fileName 路径名称
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| | | * @return 没有文件路径的名称
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| | | */
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| | | public static String getName(String fileName)
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| | | {
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| | | if (fileName == null)
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| | | {
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| | | return null;
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| | | }
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| | | int lastUnixPos = fileName.lastIndexOf('/');
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| | | int lastWindowsPos = fileName.lastIndexOf('\\');
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| | | int index = Math.max(lastUnixPos, lastWindowsPos);
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| | | return fileName.substring(index + 1);
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| | | }
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| | |
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| | | /**
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| | | * 获取不带后缀文件名称 /profile/upload/2022/04/16/ruoyi.png -- ruoyi
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| | | * |
| | | * @param fileName 路径名称
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| | | * @return 没有文件路径和后缀的名称
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| | | */
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| | | public static String getNameNotSuffix(String fileName)
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| | | {
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| | | if (fileName == null)
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| | | {
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| | | return null;
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| | | }
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| | | String baseName = FilenameUtils.getBaseName(fileName);
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| | | return baseName;
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| | | }
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| | | }
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