CODEWITHSUNDEEP
javaspringapache-commons-beanutils
oxygenan
oxygenan

Reputation: 1033

Retrieve bean property value from an object

My class has multiple fields with getter and setter

While trying to access the value of a property of a bean i have to check the property name and retrieve the value..

if(property is this )
    mybean.getThisProperty()    
else if(property is that )    
    mybean.getThatProperty()
else...

How i can retireve without actually checking for the propertyname ..

BeanUtils.copyProperties in Spring copies property from one bean to another

Upvotes: 0

Views: 2710

Answers (2)

oxygenan
oxygenan

Reputation: 1033

How about the

PropertyUtils.getSimpleProperty

of Apaches commons.beanutils

Upvotes: 2

Sari Alalem
Sari Alalem

Reputation: 870

I'm not sure what you are trying to accomplish, but you can do something like that using Reflection:

for (Field field : object.getClass().getDeclaredFields()) {
        field.setAccessible(true);
        String name = field.getName();
        Object value;
        try {
            if (name.equals(desiredPropertyName)) {
                value = field.get(object); // Do whatever you want with the
                                            // value
            }
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }

    }

In the above code, we are getting all properties in the "object" eve the private fields without using the getter. This line gives us access to the private fields:

field.setAccessible(true);

This line retrieves the name:

String name = field.getName();

This line retrieves the value:

value = field.get(object);

If you really want to use the getter, then that's another subject, where you will have to use reflection to invoke methods.

Upvotes: 2

Related Questions