From af0e0a110e7187bf008655f7510199a0c0b25ec4 Mon Sep 17 00:00:00 2001
From: Nymph2333 <498092988@qq.com>
Date: 星期一, 10 四月 2023 14:27:40 +0800
Subject: [PATCH] newInstance() 已弃用,使用clazz.getDeclaredConstructor().newInstance() This method propagates any exception thrown by the nullary constructor, including a checked exception. Use of this method effectively bypasses the compile-time exception checking that would otherwise be performed by the compiler. The Constructor.newInstance method avoids this problem by wrapping any exception thrown by the constructor in a (checked) InvocationTargetException. The call clazz.newInstance() can be replaced by clazz.getDeclaredConstructor().newInstance() The latter sequence of calls is inferred to be able to throw the additional exception types InvocationTargetException and NoSuchMethodException. Both of these exception types are subclasses of ReflectiveOperationException.
---
ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileUtils.java | 138 +++++++++++++++++++++++++++++++++++++--------
1 files changed, 113 insertions(+), 25 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
index dfdf9e9..5c96f7c 100644
--- 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
@@ -3,6 +3,7 @@
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;
@@ -10,8 +11,13 @@
import java.nio.charset.StandardCharsets;
import javax.servlet.http.HttpServletRequest;
import javax.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;
/**
* 文件处理工具类
@@ -53,29 +59,48 @@
}
finally
{
- if (os != null)
- {
- try
- {
- os.close();
- }
- catch (IOException e1)
- {
- e1.printStackTrace();
- }
- }
- if (fis != null)
- {
- try
- {
- fis.close();
- }
- catch (IOException e1)
- {
- e1.printStackTrace();
- }
- }
+ IOUtils.close(os);
+ IOUtils.close(fis);
}
+ }
+
+ /**
+ * 写数据到文件中
+ *
+ * @param data 数据
+ * @return 目标文件
+ * @throws IOException IO异常
+ */
+ public static String writeImportBytes(byte[] data) throws IOException
+ {
+ return writeBytes(data, RuoYiConfig.getImportPath());
+ }
+
+ /**
+ * 写数据到文件中
+ *
+ * @param data 数据
+ * @param uploadDir 目标文件
+ * @return 目标文件
+ * @throws IOException IO异常
+ */
+ 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);
}
/**
@@ -91,8 +116,7 @@
// 路径为文件且不为空则进行删除
if (file.isFile() && file.exists())
{
- file.delete();
- flag = true;
+ flag = file.delete();
}
return flag;
}
@@ -172,7 +196,6 @@
*
* @param response 响应对象
* @param realFileName 真实文件名
- * @return
*/
public static void setAttachmentResponseHeader(HttpServletResponse response, String realFileName) throws UnsupportedEncodingException
{
@@ -186,7 +209,9 @@
.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);
}
/**
@@ -200,4 +225,67 @@
String encode = URLEncoder.encode(s, StandardCharsets.UTF_8.toString());
return encode.replaceAll("\\+", "%20");
}
+
+ /**
+ * 获取图像后缀
+ *
+ * @param photoByte 图像数据
+ * @return 后缀名
+ */
+ 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;
+ }
+
+ /**
+ * 获取文件名称 /profile/upload/2022/04/16/ruoyi.png -- ruoyi.png
+ *
+ * @param fileName 路径名称
+ * @return 没有文件路径的名称
+ */
+ 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);
+ }
+
+ /**
+ * 获取不带后缀文件名称 /profile/upload/2022/04/16/ruoyi.png -- ruoyi
+ *
+ * @param fileName 路径名称
+ * @return 没有文件路径和后缀的名称
+ */
+ public static String getNameNotSuffix(String fileName)
+ {
+ if (fileName == null)
+ {
+ return null;
+ }
+ String baseName = FilenameUtils.getBaseName(fileName);
+ return baseName;
+ }
}
--
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