下载和预览前判断文件是否能到达

src/main/java/com/zq/email/controller/EmailAttachController.java

@@ -4,6 +4,7 @@ package com.zq.email.controller;
 import cn.hutool.core.date.DateUtil;
 import cn.hutool.core.date.DateUtil;
 import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.io.IoUtil;
 import cn.hutool.core.io.IoUtil;
+import cn.hutool.core.io.file.FileNameUtil;
 import cn.hutool.core.util.*;
 import cn.hutool.core.util.*;
 import cn.hutool.extra.servlet.ServletUtil;
 import cn.hutool.extra.servlet.ServletUtil;
 import cn.hutool.http.HttpUtil;
 import cn.hutool.http.HttpUtil;
@@ -79,14 +80,18 @@ public class EmailAttachController {
 
 
         String download = emailAttachService.getDownloadPath(emailAttach);
         String download = emailAttachService.getDownloadPath(emailAttach);
         AssertUtils.hasText(download, "下载地址为空");
         AssertUtils.hasText(download, "下载地址为空");
-        log.info("下载文件地址:" +download);
+        log.info("下载文件地址:" + download);
         try {
         try {
             byte[] bytes = HttpUtil.downloadBytes(download);
             byte[] bytes = HttpUtil.downloadBytes(download);
             AssertUtils.isTrue(ArrayUtil.isNotEmpty(bytes), "下载文件失败，文件为空");
             AssertUtils.isTrue(ArrayUtil.isNotEmpty(bytes), "下载文件失败，文件为空");
             return ResultVo.success();
             return ResultVo.success();
         } catch (Exception e) {
         } catch (Exception e) {
             log.error("下载文件失败:" + e.getLocalizedMessage(), e);
             log.error("下载文件失败:" + e.getLocalizedMessage(), e);
-            return ResultVo.fail("下载文件失败,文件可能不存在");
+            if (profile.contains("wan")) {
+                return ResultVo.fail("文件可能超过安全时间，禁止从外网访问下载,请从内网查看下载");
+            } else {
+                return ResultVo.fail("下载文件失败，文件可能不存在");
+            }
         }
         }
     }
     }
 
 
@@ -103,7 +108,8 @@ public class EmailAttachController {
             byte[] bytes = HttpUtil.downloadBytes(download);
             byte[] bytes = HttpUtil.downloadBytes(download);
             response.setHeader("Content-Disposition", "attachment;filename*=UTF-8''" + URLEncoder.encode(emailAttach.getAttachName(),"UTF-8"));
             response.setHeader("Content-Disposition", "attachment;filename*=UTF-8''" + URLEncoder.encode(emailAttach.getAttachName(),"UTF-8"));
             response.setCharacterEncoding("UTF-8");
             response.setCharacterEncoding("UTF-8");
-            ServletUtil.write(response, IoUtil.toStream(bytes), "application/octet-stream");
+            //ServletUtil.write(response, IoUtil.toStream(bytes),"application/octet-stream");
+            ServletUtil.write(response, IoUtil.toStream(bytes), FileUtil.getMimeType(emailAttach.getAttachName())!=null?FileUtil.getMimeType(emailAttach.getAttachName()):"application/octet-stream");
         } catch (Exception e) {
         } catch (Exception e) {
             log.error("下载文件失败:" + e.getLocalizedMessage(), e);
             log.error("下载文件失败:" + e.getLocalizedMessage(), e);
             if (profile.contains("wan")){
             if (profile.contains("wan")){

src/main/java/com/zq/email/utils/EmailUtil.java

 package com.zq.email.utils;
 package com.zq.email.utils;
 
 
 import cn.hutool.core.collection.CollectionUtil;
 import cn.hutool.core.collection.CollectionUtil;
+import cn.hutool.core.io.FileUtil;
 import com.zq.email.entity.EmailAttach;
 import com.zq.email.entity.EmailAttach;
 import io.swagger.models.auth.In;
 import io.swagger.models.auth.In;
 
 
@@ -20,11 +21,15 @@ public class EmailUtil {
 
 
     public static void main(String[] args) throws Exception {
     public static void main(String[] args) throws Exception {
 
 
-        InternetAddress[] parse = InternetAddress.parse("111@sina.com,111@sina.com,");
-        for (InternetAddress internetAddress : parse) {
-            System.out.println(internetAddress.toString());
-            System.out.println(internetAddress.getAddress());
-        }
+        String mimeType = FileUtil.getMimeType("ccccc.ofd");
+        System.out.println(mimeType);
+
+
+//        InternetAddress[] parse = InternetAddress.parse("111@sina.com,111@sina.com,");
+//        for (InternetAddress internetAddress : parse) {
+//            System.out.println(internetAddress.toString());
+//            System.out.println(internetAddress.getAddress());
+//        }
         //       Session session = Session.getDefaultInstance(new Properties());
         //       Session session = Session.getDefaultInstance(new Properties());
 
 
 //        MimeMessage message = createMessage(session);
 //        MimeMessage message = createMessage(session);
@@ -83,4 +88,6 @@ public class EmailUtil {
 
 
     }
     }
 
 
+
+
 }
 }