fixed

src/main/java/cn/cslg/pas/service/importPatent/GetPatentPictureFromWebThread.java

@@ -14,6 +14,7 @@ import cn.cslg.pas.service.common.PatentStarApiService;
 import cn.hutool.core.util.IdUtil;
 import org.apache.commons.fileupload.FileItem;
 import org.apache.commons.fileupload.disk.DiskFileItemFactory;
+import org.apache.commons.lang3.StringUtils;
 import org.dom4j.Document;
 import org.dom4j.Element;
 import org.dom4j.XPath;
@@ -58,7 +59,7 @@ public class GetPatentPictureFromWebThread extends Thread {
             UploadPatentWebDTO uploadPatentWebDTO = uploadPatentWebDTOs.remove(0);
             try {
                 String usedNo = uploadPatentWebDTO.getStarPatentVO().getPublicNo();
-                if (usedNo == null) {
+                if (StringUtils.isEmpty(usedNo)) {
                     usedNo = uploadPatentWebDTO.getStarPatentVO().getPublicAccreditNo();
                 }
                 if (usedNo.contains("CN")) {