From 0208c795499b808c762edbb3d61432410692dd6e Mon Sep 17 00:00:00 2001
From: chenhj <chenhj@lunor.cn>
Date: 星期六, 24 五月 2025 14:50:15 +0800
Subject: [PATCH] Merge pull request 'chen' (#7) from chen into master
---
ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileUtils.java | 291 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 291 insertions(+), 0 deletions(-)
diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileUtils.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileUtils.java
new file mode 100644
index 0000000..2062b75
--- /dev/null
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileUtils.java
@@ -0,0 +1,291 @@
+package com.ruoyi.common.utils.file;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.lang3.ArrayUtils;
+import com.ruoyi.common.config.RuoYiConfig;
+import com.ruoyi.common.utils.DateUtils;
+import com.ruoyi.common.utils.StringUtils;
+import com.ruoyi.common.utils.uuid.IdUtils;
+import org.apache.commons.io.FilenameUtils;
+
+/**
+ * 鏂囦欢澶勭悊宸ュ叿绫�
+ *
+ * @author ruoyi
+ */
+public class FileUtils
+{
+ public static String FILENAME_PATTERN = "[a-zA-Z0-9_\\-\\|\\.\\u4e00-\\u9fa5]+";
+
+ /**
+ * 杈撳嚭鎸囧畾鏂囦欢鐨刡yte鏁扮粍
+ *
+ * @param filePath 鏂囦欢璺緞
+ * @param os 杈撳嚭娴�
+ * @return
+ */
+ public static void writeBytes(String filePath, OutputStream os) throws IOException
+ {
+ FileInputStream fis = null;
+ try
+ {
+ File file = new File(filePath);
+ if (!file.exists())
+ {
+ throw new FileNotFoundException(filePath);
+ }
+ fis = new FileInputStream(file);
+ byte[] b = new byte[1024];
+ int length;
+ while ((length = fis.read(b)) > 0)
+ {
+ os.write(b, 0, length);
+ }
+ }
+ catch (IOException e)
+ {
+ throw e;
+ }
+ finally
+ {
+ IOUtils.close(os);
+ IOUtils.close(fis);
+ }
+ }
+
+ /**
+ * 鍐欐暟鎹埌鏂囦欢涓�
+ *
+ * @param data 鏁版嵁
+ * @return 鐩爣鏂囦欢
+ * @throws IOException IO寮傚父
+ */
+ public static String writeImportBytes(byte[] data) throws IOException
+ {
+ return writeBytes(data, RuoYiConfig.getImportPath());
+ }
+
+ /**
+ * 鍐欐暟鎹埌鏂囦欢涓�
+ *
+ * @param data 鏁版嵁
+ * @param uploadDir 鐩爣鏂囦欢
+ * @return 鐩爣鏂囦欢
+ * @throws IOException IO寮傚父
+ */
+ public static String writeBytes(byte[] data, String uploadDir) throws IOException
+ {
+ FileOutputStream fos = null;
+ String pathName = "";
+ 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
+ {
+ IOUtils.close(fos);
+ }
+ return FileUploadUtils.getPathFileName(uploadDir, pathName);
+ }
+
+ /**
+ * 鍒犻櫎鏂囦欢
+ *
+ * @param filePath 鏂囦欢
+ * @return
+ */
+ public static boolean deleteFile(String filePath)
+ {
+ boolean flag = false;
+ File file = new File(filePath);
+ // 璺緞涓烘枃浠朵笖涓嶄负绌哄垯杩涜鍒犻櫎
+ if (file.isFile() && file.exists())
+ {
+ flag = file.delete();
+ }
+ return flag;
+ }
+
+ /**
+ * 鏂囦欢鍚嶇О楠岃瘉
+ *
+ * @param filename 鏂囦欢鍚嶇О
+ * @return true 姝ｅ父 false 闈炴硶
+ */
+ public static boolean isValidFilename(String filename)
+ {
+ return filename.matches(FILENAME_PATTERN);
+ }
+
+ /**
+ * 妫�鏌ユ枃浠舵槸鍚﹀彲涓嬭浇
+ *
+ * @param resource 闇�瑕佷笅杞界殑鏂囦欢
+ * @return true 姝ｅ父 false 闈炴硶
+ */
+ public static boolean checkAllowDownload(String resource)
+ {
+ // 绂佹鐩綍涓婅烦绾у埆
+ if (StringUtils.contains(resource, ".."))
+ {
+ return false;
+ }
+
+ // 妫�鏌ュ厑璁镐笅杞界殑鏂囦欢瑙勫垯
+ if (ArrayUtils.contains(MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION, FileTypeUtils.getFileType(resource)))
+ {
+ return true;
+ }
+
+ // 涓嶅湪鍏佽涓嬭浇鐨勬枃浠惰鍒�
+ return false;
+ }
+
+ /**
+ * 涓嬭浇鏂囦欢鍚嶉噸鏂扮紪鐮�
+ *
+ * @param request 璇锋眰瀵硅薄
+ * @param fileName 鏂囦欢鍚�
+ * @return 缂栫爜鍚庣殑鏂囦欢鍚�
+ */
+ public static String setFileDownloadHeader(HttpServletRequest request, String fileName) throws UnsupportedEncodingException
+ {
+ final String agent = request.getHeader("USER-AGENT");
+ String filename = fileName;
+ if (agent.contains("MSIE"))
+ {
+ // IE娴忚鍣�
+ filename = URLEncoder.encode(filename, "utf-8");
+ filename = filename.replace("+", " ");
+ }
+ else if (agent.contains("Firefox"))
+ {
+ // 鐏嫄娴忚鍣�
+ filename = new String(fileName.getBytes(), "ISO8859-1");
+ }
+ else if (agent.contains("Chrome"))
+ {
+ // google娴忚鍣�
+ filename = URLEncoder.encode(filename, "utf-8");
+ }
+ else
+ {
+ // 鍏跺畠娴忚鍣�
+ filename = URLEncoder.encode(filename, "utf-8");
+ }
+ return filename;
+ }
+
+ /**
+ * 涓嬭浇鏂囦欢鍚嶉噸鏂扮紪鐮�
+ *
+ * @param response 鍝嶅簲瀵硅薄
+ * @param realFileName 鐪熷疄鏂囦欢鍚�
+ */
+ public static void setAttachmentResponseHeader(HttpServletResponse response, String realFileName) throws UnsupportedEncodingException
+ {
+ String percentEncodedFileName = percentEncode(realFileName);
+
+ StringBuilder contentDispositionValue = new StringBuilder();
+ contentDispositionValue.append("attachment; filename=")
+ .append(percentEncodedFileName)
+ .append(";")
+ .append("filename*=")
+ .append("utf-8''")
+ .append(percentEncodedFileName);
+
+ response.addHeader("Access-Control-Expose-Headers", "Content-Disposition,download-filename");
+ response.setHeader("Content-disposition", contentDispositionValue.toString());
+ response.setHeader("download-filename", percentEncodedFileName);
+ }
+
+ /**
+ * 鐧惧垎鍙风紪鐮佸伐鍏锋柟娉�
+ *
+ * @param s 闇�瑕佺櫨鍒嗗彿缂栫爜鐨勫瓧绗︿覆
+ * @return 鐧惧垎鍙风紪鐮佸悗鐨勫瓧绗︿覆
+ */
+ public static String percentEncode(String s) throws UnsupportedEncodingException
+ {
+ String encode = URLEncoder.encode(s, StandardCharsets.UTF_8.toString());
+ return encode.replaceAll("\\+", "%20");
+ }
+
+ /**
+ * 鑾峰彇鍥惧儚鍚庣紑
+ *
+ * @param photoByte 鍥惧儚鏁版嵁
+ * @return 鍚庣紑鍚�
+ */
+ 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))
+ {
+ strFileExtendName = "gif";
+ }
+ else if ((photoByte[6] == 74) && (photoByte[7] == 70) && (photoByte[8] == 73) && (photoByte[9] == 70))
+ {
+ strFileExtendName = "jpg";
+ }
+ else if ((photoByte[0] == 66) && (photoByte[1] == 77))
+ {
+ strFileExtendName = "bmp";
+ }
+ else if ((photoByte[1] == 80) && (photoByte[2] == 78) && (photoByte[3] == 71))
+ {
+ strFileExtendName = "png";
+ }
+ return strFileExtendName;
+ }
+
+ /**
+ * 鑾峰彇鏂囦欢鍚嶇О /profile/upload/2022/04/16/ruoyi.png -- ruoyi.png
+ *
+ * @param fileName 璺緞鍚嶇О
+ * @return 娌℃湁鏂囦欢璺緞鐨勫悕绉�
+ */
+ public static String getName(String fileName)
+ {
+ if (fileName == null)
+ {
+ return null;
+ }
+ int lastUnixPos = fileName.lastIndexOf('/');
+ int lastWindowsPos = fileName.lastIndexOf('\\');
+ int index = Math.max(lastUnixPos, lastWindowsPos);
+ return fileName.substring(index + 1);
+ }
+
+ /**
+ * 鑾峰彇涓嶅甫鍚庣紑鏂囦欢鍚嶇О /profile/upload/2022/04/16/ruoyi.png -- ruoyi
+ *
+ * @param fileName 璺緞鍚嶇О
+ * @return 娌℃湁鏂囦欢璺緞鍜屽悗缂�鐨勫悕绉�
+ */
+ public static String getNameNotSuffix(String fileName)
+ {
+ if (fileName == null)
+ {
+ return null;
+ }
+ String baseName = FilenameUtils.getBaseName(fileName);
+ return baseName;
+ }
+}
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