From e02f6923593bd49f87caccd87e063baf312aaa3f Mon Sep 17 00:00:00 2001
From: 稚屿 <1491182878@qq.com>
Date: Mon, 22 Aug 2022 14:19:08 +0800
Subject: [PATCH] 修复菜单管理已知问题 问题描述：在菜单管理下，类型为菜单或者按钮的条目下点击修改按钮。 情况1，如果是类型为菜单，第一次点击修改按钮正常，则第二次点击另一个条目后面的修改按钮时报错！ 情况2，如果是类型为按钮，第一次点击修改时正常，当点击取消按钮关闭弹窗时，浏览器报错！
---
ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileTypeUtils.java | 29 +++++++++++++++++++++++++++++
1 files changed, 29 insertions(+), 0 deletions(-)
diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileTypeUtils.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileTypeUtils.java
index 65be65b..25f5306 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileTypeUtils.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileTypeUtils.java
@@ -44,4 +44,33 @@
}
return fileName.substring(separatorIndex + 1).toLowerCase();
}
+
+ /**
+ * 获取文件类型
+ *
+ * @param photoByte 文件字节码
+ * @return 后缀（不含".")
+ */
+ 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;
+ }
}
\ No newline at end of file
--
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