fix

virgo.file/src/main/java/com/bosshand/virgo/file/service/WorkarkContractService.java

@@ -162,21 +162,24 @@ public class WorkarkContractService {
 
     public byte[] showPdf(long pdfId) {
 
-        List<WorkarkContractPdfSeal> pdfSealList = getPdfSealList(pdfId);
-
         byte[] workarkContractPdfData = getWorkarkContractPdfData(pdfId);
 
+        List<WorkarkContractPdfSeal> pdfSealList = getPdfSealList(pdfId);
+        if (pdfSealList.size() == 0) {
+            return workarkContractPdfData;
+        }
+
         byte[] contractPdf = null;
 
         for (WorkarkContractPdfSeal pdfSeal : pdfSealList) {
             byte[] bytes = FileUtil.readFromUrl(pdfSeal.getPictureAddress());
-            if(contractPdf != null){
+            if (contractPdf != null) {
                 contractPdf = PdfKeywordFinder.addPicturesPage(contractPdf,
                         bytes, pdfSeal.getPageSize(), pdfSeal.getPageLeft(), pdfSeal.getPageTop(), pdfSeal.getPictureWidth(), pdfSeal.getPictureHeight());
 
             } else {
-            contractPdf = PdfKeywordFinder.addPicturesPage(workarkContractPdfData,
-                    bytes, pdfSeal.getPageSize(), pdfSeal.getPageLeft(), pdfSeal.getPageTop(), pdfSeal.getPictureWidth(), pdfSeal.getPictureHeight());
+                contractPdf = PdfKeywordFinder.addPicturesPage(workarkContractPdfData,
+                        bytes, pdfSeal.getPageSize(), pdfSeal.getPageLeft(), pdfSeal.getPageTop(), pdfSeal.getPictureWidth(), pdfSeal.getPictureHeight());
             }
         }