feat：详情

wyszyk-provider/wyszyk-provider-resource/src/main/java/com/zrqx/resource/service/impl/EbookServiceImpl.java

@@ -728,7 +728,9 @@ public class EbookServiceImpl extends ServiceImpl<EbookMapper, Ebook> implements
         LambdaQueryWrapper<QrCode> qrCodeLambdaQueryWrapper = new LambdaQueryWrapper<>();
         qrCodeLambdaQueryWrapper.eq(QrCode::getResourceId, oid);
         QrCode qrCode = qrCodeMapper.selectOne(qrCodeLambdaQueryWrapper);
+        if(qrCode!=null){
             vo.setQrCode(qrCode.getQrCode());
+        }
         if (!tokenManager.isExistMember()) {
             // 未登录
             vo.setIsCollection(false);