Question

我需要一些非常严重的问题的帮助，所以事情是我有ae商务网站，一次单个用户下订单工作正常，但如果不止一个用户尝试订购相同的产品，那么我我得到了这个例外

org.grails.datastore.mapping.core.OptimisticLockingException: The instance was updated by another user while you were editing
Point : in.emkart.api.OrderAPIController.save(OrderAPIController.groovy:70)

所以我的代码就像

/** some code **/

            if (product && orderContinue) {
                product = updateQuantityForProduct(product)
                order?.product = product
/** some code  **/
              try{ 
              // some code
              product.save() // line 70
              // some code
              }
             catch(Exception e){
              log.debug "unable to place order-->"+e /** exception --> (unable to place order-->org.grails.datastore.mapping.core.OptimisticLockingException: The instance was updated by another user while you were editing
Point : in.emkart.api.OrderAPIController.save(OrderAPIController.groovy:70) ) **/
               }

哪些修复可以帮助我防止这种情况，也可以让另一个用户等待或保持某种队列，以便一旦先前的订单完成，那么只有下一个请求继续下订单。< / p>

处理乐观锁定异常grails - mongodb

0 个答案: