Introduction to the COMMONS BeANUTILS CORE framework
Commons Beanutils Core is part of the Apache Commons project and is a framework for operating the Java object.It provides a set of tools and APIs to simplify common operations such as attribute copy, reading and setting attribute values between Java objects.
The main features of Commons Beanutils Core include:
1. Properties copy: It can easily copy the attribute value of one object to another, without manually copy the attribute one by one.
2. Dynamic attribute access: You can dynamically read and set the attribute values of the object through the name string, without having to hardly code the access method of each attribute.
3. Object creation and initialization: You can use Beanutils Core to create and initialize the Java objects dynamically during runtime, without explicitly use the constructor and setter method.
4. Type conversion and formatting: Provide type conversion and formatting functions, which can easily handle conversion and formatting operations between different types.
Here are some examples of examples using Commons Beanutils Core:
import org.apache.commons.beanutils.BeanUtils;
public class ExampleBean {
private String name;
private int age;
// omit the creation function and getter/setter method
public static void main(String[] args) {
ExampleBean sourceBean = new ExampleBean();
sourceBean.setName("John");
sourceBean.setAge(25);
ExampleBean destBean = new ExampleBean();
try {
// Use Beanutils for property copy
BeanUtils.copyProperties(destBean, sourceBean);
} catch (Exception e) {
e.printStackTrace();
}
// The attribute value of the output target object
System.out.println (Destbean.getName ()); // Output: John
System.out.println (Destbean.get ()); // Output: 25
}
}
The above example code demonstrates how to use Beanutils's CopyProperties method to copy the attribute value of one object into another object.By calling Beanutils.copyProperties (Dest, SRC), we can copy the property value of the source object SourceBean to the target object Destbean.
By using Commons Beanutils Core, developers can operate the attributes of the Java object more concisely, improve development efficiency, and reduce redundant code.This framework has been widely used in object operations, data conversion and data binding in Java development.
