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/PdfFilePreviewImpl.java

@@ -0,0 +1,99 @@
+package cn.keking.service.impl;
+
+import cn.keking.config.ConfigConstants;
+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 cn.keking.utils.PdfUtils;
+import cn.keking.web.filter.BaseUrlFilter;
+import org.springframework.stereotype.Service;
+import org.springframework.ui.Model;
+
+import java.util.List;
+
+/**
+ * Created by kl on 2018/1/17.
+ * Content :处理pdf文件
+ */
+@Service
+public class PdfFilePreviewImpl implements FilePreview {
+
+    private final FilePreviewCommonService filePreviewCommonService;
+
+    private final PdfUtils pdfUtils;
+
+    private final DownloadUtils downloadUtils;
+
+    private static final String FILE_DIR = ConfigConstants.getFileDir();
+
+    public PdfFilePreviewImpl(FilePreviewCommonService filePreviewCommonService,
+                              PdfUtils pdfUtils,
+                              DownloadUtils downloadUtils) {
+        this.filePreviewCommonService = filePreviewCommonService;
+        this.pdfUtils = pdfUtils;
+        this.downloadUtils = downloadUtils;
+    }
+
+    @Override
+    public String filePreviewHandle(String url, Model model, FileAttribute fileAttribute) {
+        String suffix=fileAttribute.getSuffix();
+        String fileName=fileAttribute.getName();
+        String officePreviewType = fileAttribute.getOfficePreviewType();
+        String baseUrl = BaseUrlFilter.getBaseUrl();
+        String pdfName = fileName.substring(0, fileName.lastIndexOf(".") + 1) + "pdf";
+        String outFilePath = FILE_DIR + pdfName;
+        if (OfficeFilePreviewImpl.OFFICE_PREVIEW_TYPE_IMAGE.equals(officePreviewType) || OfficeFilePreviewImpl.OFFICE_PREVIEW_TYPE_ALL_IMAGES.equals(officePreviewType)) {
+            //当文件不存在时，就去下载
+            if (!filePreviewCommonService.listConvertedFiles().containsKey(pdfName) || !ConfigConstants.isCacheEnabled()) {
+                ReturnResponse<String> response = downloadUtils.downLoad(fileAttribute, fileName);
+                if (0 != response.getCode()) {
+                    model.addAttribute("fileType", suffix);
+                    model.addAttribute("msg", response.getMsg());
+                    return "fileNotSupported";
+                }
+                outFilePath = response.getContent();
+                if (ConfigConstants.isCacheEnabled()) {
+                    // 加入缓存
+                    filePreviewCommonService.addConvertedFile(pdfName, filePreviewCommonService.getRelativePath(outFilePath));
+                }
+            }
+            List<String> imageUrls = pdfUtils.pdf2jpg(outFilePath, pdfName, baseUrl);
+            if (imageUrls == null || imageUrls.size() < 1) {
+                model.addAttribute("msg", "pdf转图片异常，请联系管理员");
+                model.addAttribute("fileType",fileAttribute.getSuffix());
+                return "fileNotSupported";
+            }
+            model.addAttribute("imgurls", imageUrls);
+            model.addAttribute("currentUrl", imageUrls.get(0));
+            if (OfficeFilePreviewImpl.OFFICE_PREVIEW_TYPE_IMAGE.equals(officePreviewType)) {
+                return "officePicture";
+            } else {
+                return "picture";
+            }
+        } else {
+            // 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")) {
+                if (!filePreviewCommonService.listConvertedFiles().containsKey(pdfName) || !ConfigConstants.isCacheEnabled()) {
+                    ReturnResponse<String> response = downloadUtils.downLoad(fileAttribute, pdfName);
+                    if (0 != response.getCode()) {
+                        model.addAttribute("fileType", suffix);
+                        model.addAttribute("msg", response.getMsg());
+                        return "fileNotSupported";
+                    }
+                    model.addAttribute("pdfUrl", filePreviewCommonService.getRelativePath(response.getContent()));
+                    if (ConfigConstants.isCacheEnabled()) {
+                        // 加入缓存
+                        filePreviewCommonService.addConvertedFile(pdfName, filePreviewCommonService.getRelativePath(outFilePath));
+                    }
+                } else {
+                    model.addAttribute("pdfUrl", pdfName);
+                }
+            } else {
+                model.addAttribute("pdfUrl", url);
+            }
+        }
+        return "pdf";
+    }
+}