调整项目模块，jodconverter-core重命名为office-plugin。jdocnverter-web重命名为server

server/src/main/java/cn/keking/service/impl/PictureFilePreviewImpl.java

@@ -0,0 +1,60 @@
+package cn.keking.service.impl;
+
+import cn.keking.model.FileAttribute;
+import cn.keking.model.ReturnResponse;
+import cn.keking.service.FilePreview;
+import cn.keking.utils.DownloadUtils;
+import cn.keking.service.FilePreviewCommonService;
+import org.springframework.stereotype.Service;
+import org.springframework.ui.Model;
+import org.springframework.util.CollectionUtils;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Created by kl on 2018/1/17.
+ * Content :图片文件处理
+ */
+@Service
+public class PictureFilePreviewImpl implements FilePreview {
+
+    private final FilePreviewCommonService filePreviewCommonService;
+
+    private final DownloadUtils downloadUtils;
+
+    public PictureFilePreviewImpl(FilePreviewCommonService filePreviewCommonService,
+                                  DownloadUtils downloadUtils) {
+        this.filePreviewCommonService = filePreviewCommonService;
+        this.downloadUtils = downloadUtils;
+    }
+
+    @Override
+    public String filePreviewHandle(String url, Model model, FileAttribute fileAttribute) {
+        List<String> imgUrls = new ArrayList<>();
+        imgUrls.add(url);
+        String fileKey = fileAttribute.getFileKey();
+        List<String> zipImgUrls = filePreviewCommonService.getImgCache(fileKey);
+        if (!CollectionUtils.isEmpty(zipImgUrls)) {
+            imgUrls.addAll(zipImgUrls);
+        }
+        // 不是http开头，浏览器不能直接访问，需下载到本地
+        if (url != null && !url.toLowerCase().startsWith("http")) {
+            ReturnResponse<String> response = downloadUtils.downLoad(fileAttribute, null);
+            if (0 != response.getCode()) {
+                model.addAttribute("fileType", fileAttribute.getSuffix());
+                model.addAttribute("msg", response.getMsg());
+                return "fileNotSupported";
+            } else {
+                String file = filePreviewCommonService.getRelativePath(response.getContent());
+                imgUrls.clear();
+                imgUrls.add(file);
+                model.addAttribute("imgurls", imgUrls);
+                model.addAttribute("currentUrl", file);
+            }
+        } else {
+            model.addAttribute("imgurls", imgUrls);
+            model.addAttribute("currentUrl", url);
+        }
+        return "picture";
+    }
+}