提交数据时，如果查到数据数据为空，则跳过这条数据

src/main/java/com/ssj/service/weixin/library/service/impl/BookBorrowServiceImpl.java

@@ -231,6 +231,9 @@ public class BookBorrowServiceImpl extends BaseServiceImpl<TbLibBookBorrow, Stri
 			if(!lockingList.isEmpty()){
 				for (LibBookLocking locking:lockingList){
 					TbLibBookInfo info = bookService.getById(locking.getBookInfoId());
+					if(info == null){
+						continue;
+					}
 					int bookStockRemain = ((info.getBookStockRemain()==null?0:info.getBookStockRemain())+(locking.getBookSize()==null?1:locking.getBookSize()));
 					info.setBookStockRemain(bookStockRemain>info.getBookStock()?info.getBookStock():bookStockRemain);
 					saveBookList.add(info);