From fe98fba5b51ae4f1ef62cbdbd9b6a8ec20e8e623 Mon Sep 17 00:00:00 2001
From: 若依 <yzz_ivy@163.com>
Date: 星期二, 12 七月 2022 18:01:56 +0800
Subject: [PATCH] !527 调增数组格式声明，random随机转换修正 Merge pull request !527 from 靖少毅/jsy20220705
---
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;
+ }
}
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