From 1dae7c9bc944880863e81438d46f36ccb6865ca0 Mon Sep 17 00:00:00 2001
From: 疯狂的狮子li <15040126243@163.com>
Date: 星期三, 29 四月 2020 09:16:29 +0800
Subject: [PATCH] Merge branch 'master' of https://gitee.com/y_project/RuoYi-Vue
---
ruoyi/src/main/java/com/ruoyi/common/utils/file/FileUtils.java | 142 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 142 insertions(+), 0 deletions(-)
diff --git a/ruoyi/src/main/java/com/ruoyi/common/utils/file/FileUtils.java b/ruoyi/src/main/java/com/ruoyi/common/utils/file/FileUtils.java
new file mode 100644
index 0000000..04d4703
--- /dev/null
+++ b/ruoyi/src/main/java/com/ruoyi/common/utils/file/FileUtils.java
@@ -0,0 +1,142 @@
+package com.ruoyi.common.utils.file;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+import javax.servlet.http.HttpServletRequest;
+
+/**
+ * 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
+ {
+ if (os != null)
+ {
+ try
+ {
+ os.close();
+ }
+ catch (IOException e1)
+ {
+ e1.printStackTrace();
+ }
+ }
+ if (fis != null)
+ {
+ try
+ {
+ fis.close();
+ }
+ catch (IOException e1)
+ {
+ e1.printStackTrace();
+ }
+ }
+ }
+ }
+
+ /**
+ * 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())
+ {
+ file.delete();
+ flag = true;
+ }
+ 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);
+ }
+
+ /**
+ * 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;
+ }
+}
--
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