Introduction to the Commons beautils component

Commons bean utils is a toolkit for operating java bean provided by Apache open source organization. Using commons bean utils, we can easily operate the properties of bean objects. Today, let's introduce the common methods of this package.

1. What is BeanUtils

Java beans are frequently operated in the program, so Apache provides a set of open source APIs to facilitate the operation of Java beans, that is, BeanUtils components.

2. Function of BeanUtils

Simplify the operation of JavaBeans.

In general, when writing bean components, we must write setter and getter methods. Of course, if we know the relevant properties and methods of beans in advance, it is relatively simple to write beans.

3. BeanUtils dependent package users can download from www.apache.com Download the BeanUtils component from. Org, and then introduce the jar file into the project.

(1) Bean utils related package commons-bean utils-1.8 3.jar commons-beanutils-1.8. 3-javadoc. jar commons-beanutils-1.8. 3-javadoc. jar commons-beanutils-bean-collections-1.8. 3.jar commons-beanutils-core-1.8. 3.jar

(2) Logic4j related package commons logging jar log4j. Jar note: if the log jar file is missing, an error is reported:

2： Example - basic usage

Usage 1: copy of object attributes

Usage 2: copy of object

Usage 3: copy the map data to the JavaBean. Note: the key in the map should be consistent with the attribute name of the JavaBean

Code example

JavaBean class

Basic operations on Java beans through BeanUtils

3： Instance - copy of date type

The date type converter needs to be registered. See the following code for the two methods:

summary

The above is about the Commons BeanUtils component introduced by Xiaobian. I hope it will be helpful to you. If you have any questions, please leave me a message, and Xiaobian will reply to you in time. Thank you very much for your support for the programming tips website!