优化：文件预览页面对不存在的文件和不能预览的文件进行提示

shandan-control/src/main/resources/application-dev.yml

@@ -47,4 +47,4 @@ project:
 
 logging:
   level:
-    com.keyware: debug
+    com.keyware: info

shandan-system/src/main/java/com/keyware/shandan/system/controller/SysFileController.java

@@ -2,11 +2,11 @@ package com.keyware.shandan.system.controller;
 
 import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.util.ZipUtil;
-import com.alibaba.fastjson.JSONObject;
 import com.keyware.shandan.bianmu.service.DataLabelsService;
 import com.keyware.shandan.common.controller.BaseController;
 import com.keyware.shandan.common.entity.Result;
 import com.keyware.shandan.common.util.FileDownload;
+import com.keyware.shandan.common.util.PoiFileReadUtil;
 import com.keyware.shandan.frame.properties.CustomProperties;
 import com.keyware.shandan.system.constants.FormTypeEnum;
 import com.keyware.shandan.system.entity.SysFile;
@@ -16,23 +16,18 @@ import com.keyware.shandan.system.service.SysFileService;
 import com.keyware.shandan.system.service.SysFormConfigService;
 import com.keyware.shandan.system.service.SysSettingService;
 import com.keyware.shandan.system.utils.FileChunkUploadUtil;
-import org.apache.tomcat.util.http.ResponseUtil;
-import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.util.Assert;
-import org.springframework.util.StopWatch;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.servlet.ModelAndView;
 
 import javax.servlet.http.HttpServletResponse;
-import java.io.*;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
+import java.io.File;
+import java.io.IOException;
 import java.text.SimpleDateFormat;
 import java.util.Arrays;
 import java.util.HashSet;
-import java.util.List;
 import java.util.Set;
 
 /**
@@ -62,7 +57,6 @@ public class SysFileController extends BaseController<SysFileService, SysFile, S
     @Autowired
     private SysFormConfigService formConfigService;
 
-
     @GetMapping("/layer")
     public ModelAndView fileUploadLayer(ModelAndView mav) {
         mav.setViewName("sys/file/fileUploadLayer");
@@ -114,10 +108,6 @@ public class SysFileController extends BaseController<SysFileService, SysFile, S
         }
         String downloadUrl = bianmuSetting.getSysAddress() + "/sys/file/download/" + fileId;
 
-        // TODO 临时调试用
-        //fileViewUrl = "http://192.168.102.192:8080/bianmu" + file.getWebUri();
-        //downloadUrl = "http://192.168.102.192:8080/bianmu/sys/file/download/" + fileId;
-
         mav.addObject("fileViewUrl", fileViewUrl.replace("\\", "/"));
         mav.addObject("downloadUrl", downloadUrl);
         mav.addObject("fileData", file);
@@ -128,6 +118,22 @@ public class SysFileController extends BaseController<SysFileService, SysFile, S
         }
         mav.addObject("readableFileSize", fileSize);
         mav.addObject("LabelConfigSet", labelsService.formConfigList());
+        File ff = new File(customProperties.getFileStorage().getPath() + File.separator + file.getPath());
+        if (!ff.exists()) {
+            mav.addObject("fileNotExists", true);
+        } else {
+            if (PoiFileReadUtil.isReadilyFile(ff)) {
+                try {
+                    String text = PoiFileReadUtil.parseTextByFile(ff);
+                    if (text == null) {
+                        mav.addObject("fileReadError", true);
+                    }
+                } catch (Exception e) {
+                    mav.addObject("fileReadError", true);
+                }
+            }
+        }
+
         return mav;
     }
 

shandan-system/src/main/resources/static/js/sys/file/view.js

@@ -23,7 +23,7 @@ layui.use(['layer', 'laytpl', 'dropdown', 'carousel', 'form', 'datalabel'], func
                 break;
             case 'markRecords':
                 let markRecords = file[col]
-                if(markRecords){
+                if (markRecords) {
                     for (let mark of markRecords) {
                         $(`#marktag-${mark.markType}`).html(MarkTag.getStaticTagHtml(mark.markValue))
                     }
@@ -39,17 +39,23 @@ layui.use(['layer', 'laytpl', 'dropdown', 'carousel', 'form', 'datalabel'], func
                 $(`label[name="${col}"]`).text(file[col] || '');
         }
     }
-    if(file.labels){
+    if (file.labels) {
         layui.datalabel.setData(file.labels);
     }
 
-    if(file.fileSize === 0){
+    if (file.fileSize === 0) {
         showWarningMsg('该文件中没有任何内容');
         return;
     }
+    if (fileNotExists) {
+        showErrorMsg('文件不存在');
+        return;
+    }
+    if (fileReadError) {
+        showErrorMsg('文件内容不可读，请下载查看');
+        return;
+    }
     let office_server = DICT.getOfficeServer();
-    // TODO 临时调试用
-    //office_server = 'http://127.0.0.1:8888/onlinePreview';
 
     let if_src = office_server + '?url=' + encodeURIComponent(Base64.encode(fileViewUrl))
     let if_elem = document.getElementById('office-online');