Dynamic attribute settings and acquisition methods in the Commons Beanutils Core framework
Dynamic attribute settings and acquisition methods in the Commons Beanutils Core framework
Commons Beanutils Core is an open source framework for operating the JavaBean object, which provides some convenient methods to set and obtain dynamic attributes.In this article, we will introduce these methods and provide some Java code examples.
Dynamic attribute setting method:
1. Use the setproperty method: This method is used to set the specified attribute value of the given object.
BeanUtils.setProperty(object, propertyName, propertyValue);
Among them, Object is the object of the attribute. PropertyName is the name of the attribute. Propertyvalue is the attribute value to be set.
Example:
Person person = new Person();
Beanutils.Setproperty (Person, "name", "Zhang San");
System.out.println (Person.getName ()); // Output: Zhang San
2. Use the Populate method: This method sets the attribute value according to the key value of a MAP object.
BeanUtils.populate(object, properties);
Among them, Object is an object of attributes. Properties is a MAP object that contains attribute names and attribute values.
Example:
Person person = new Person();
Map<String, Object> properties = new HashMap<>();
Properties.put ("name", "Zhang San");
properties.put("age", 25);
BeanUtils.populate(person, properties);
System.out.println (Person.getName ()); // Output: Zhang San
System.out.println (Person.getage ()); // Output: 25
Method of dynamic attribute acquisition:
1. Use the getproperty method: This method is used to obtain the specified attribute value of the given object.
String propertyValue = BeanUtils.getProperty(object, propertyName);
Among them, Object is the object of the attribute value. PropertyName is the name of the attribute.
Example:
Person person = new Person();
Person.setname ("Zhang San");
String name = BeanUtils.getProperty(person, "name");
System.out.println (name); // Output: Zhang San
2. Use the Descriper method: This method returns a MAP object that contains all the attribute names and attribute values of the given object.
Map<String, String> properties = BeanUtils.describe(object);
Among them, Object is the object of the attribute.
Example:
Person person = new Person();
Person.setname ("Zhang San");
person.setAge(25);
Map<String, String> properties = BeanUtils.describe(person);
System.out.println (Properties.get ("name"); // Output: Zhang San
System.out.println (Properties.get ("Age"); // Output: 25
These methods provide a convenient way to set and obtain the dynamic attributes of the JavaBean object.By using the Commons Beanutils Core framework, we can simplify the attribute operation and improve the efficiency of code.
Summary: This article introduces the dynamic attribute settings and acquisition methods in the Commons Beanutils Core framework, and provides some Java code examples, hoping to help readers better understand and use the framework.
