Method and sever for accessing attribute value from Java object, and storage medium

Abstract

The invention discloses a method and a server for accessing an attribute value from a Java object, and a storage medium. The method for accessing the attribute value from the Java object comprises thefollowing steps that: in a configuration file, configuring attribute corresponding relationships of all fields in a first data transmission object and a second data transmission object; for each pairof attribute corresponding relationships, through a reflection kit, obtaining the attribute value of the first data transmission object; calling the value method of an open source tool, obtaining a reference attribute value, comparing the reference attribute value with the attribute value of the first data transmission object, and outputting a comparison result; and when the comparison result isthe same, converting the attribute value of the first data transmission object into the data type of the second data transmission object, and setting in the attribute of the second data transmission object. By use of the method, attribute value accessing efficiency in the data transmission object is improved, and a performance bottleneck under high concurrence is avoided.

Description

technical field [0001] The invention relates to the technical field of application programs, in particular to a method for accessing attribute values ​​from Java objects, a server and a storage medium. Background technique [0002] In Java (an object-oriented programming language) program, it is often necessary to use expressions to store / retrieve property values ​​from a DTO (Data Transfer Object). For example, there is a UserDTO with a name attribute field (other fields are omitted), and each field has a corresponding get / set method for storing / retrieving values ​​(this is the prior art). [0003] Scenario 1: Configure the verification rule "UserDTO.name=length:20" in the configuration file. Before verification, the expression "UserDTO.name" needs to be identified, and the value of the name attribute is obtained from the UserDTO object. If the object has a multi-level structure, the expression also has multiple levels, such as "UserDTO.name.firstName". [0004] Scenario ...

AI Technical Summary

Problems solved by technology

However, due to the use of synchronization locks and java common reflection Method.invoke in the open source tool OGNL to call the get and set methods of the field, the performance is poor under high concurrency

[0007] The second is the open source tool Mvel (a powerful expression language based on Java applications): the performance is better than that of the open source tool OGNL, but because the bottom layer still uses java ordinary reflection Method.invoke to call the get / set method of the field, which is better than calling directly The efficiency of get / set is about 10 times worse

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