From b7cdd10f9f97bf01de65f9ba46a6daffec2b93e4 Mon Sep 17 00:00:00 2001
From: X.B-H <xbh_323@yeah.net>
Date: 星期三, 06 一月 2021 11:11:11 +0800
Subject: [PATCH] 修复导入数据为负浮点数时丢失精度问题

---
 ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileUtils.java |   67 ++++++++++++++++++++++++++++++++-
 1 files changed, 64 insertions(+), 3 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 03f5aa2..6bc2ce6 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
@@ -7,14 +7,18 @@
 import java.io.OutputStream;
 import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
 import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import org.apache.commons.lang3.ArrayUtils;
+import com.ruoyi.common.utils.StringUtils;
 
 /**
  * 文件处理工具类
  * 
  * @author ruoyi
  */
-public class FileUtils
+public class FileUtils extends org.apache.commons.io.FileUtils
 {
     public static String FILENAME_PATTERN = "[a-zA-Z0-9_\\-\\|\\.\\u4e00-\\u9fa5]+";
 
@@ -105,14 +109,37 @@
     }
 
     /**
+     * 检查文件是否可下载
+     * 
+     * @param resource 需要下载的文件
+     * @return true 正常 false 非法
+     */
+    public static boolean checkAllowDownload(String resource)
+    {
+        // 禁止目录上跳级别
+        if (StringUtils.contains(resource, ".."))
+        {
+            return false;
+        }
+
+        // 检查允许下载的文件规则
+        if (ArrayUtils.contains(MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION, FileTypeUtils.getFileType(resource)))
+        {
+            return true;
+        }
+
+        // 不在允许下载的文件规则
+        return false;
+    }
+
+    /**
      * 下载文件名重新编码
      * 
      * @param request 请求对象
      * @param fileName 文件名
      * @return 编码后的文件名
      */
-    public static String setFileDownloadHeader(HttpServletRequest request, String fileName)
-            throws UnsupportedEncodingException
+    public static String setFileDownloadHeader(HttpServletRequest request, String fileName) throws UnsupportedEncodingException
     {
         final String agent = request.getHeader("USER-AGENT");
         String filename = fileName;
@@ -139,4 +166,38 @@
         }
         return filename;
     }
+
+    /**
+     * 下载文件名重新编码
+     *
+     * @param response 响应对象
+     * @param realFileName 真实文件名
+     * @return
+     */
+    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.setHeader("Content-disposition", contentDispositionValue.toString());
+    }
+
+    /**
+     * 百分号编码工具方法
+     *
+     * @param s 需要百分号编码的字符串
+     * @return 百分号编码后的字符串
+     */
+    public static String percentEncode(String s) throws UnsupportedEncodingException
+    {
+        String encode = URLEncoder.encode(s, StandardCharsets.UTF_8.toString());
+        return encode.replaceAll("\\+", "%20");
+    }
 }

--
Gitblit v1.9.2