backup Java Bean Property - Java Reflection

Java examples for Reflection:Java Bean

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Description

backup Java Bean Property

Demo Code


//package com.java2s;
import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;

public class Main {
    public static void main(String[] argv) throws Exception {
        Object bean = "java2s.com";
        System.out.println(backupProp(bean));
    }/*from   w w  w. j a  v a  2 s.  co  m*/

    public static Map<String, Object> backupProp(Object bean) {
        Map<String, Object> result = new HashMap<>();
        try {
            BeanInfo beanInfo = Introspector.getBeanInfo(bean.getClass());
            PropertyDescriptor[] propertyDescriptors = beanInfo
                    .getPropertyDescriptors();
            for (PropertyDescriptor propertyDescriptor : propertyDescriptors) {
                String fieldName = propertyDescriptor.getName();
                Method readMethod = propertyDescriptor.getReadMethod();
                Object invoke = readMethod.invoke(bean, new Object[] {});
                if (!fieldName.equalsIgnoreCase("class")) {
                    result.put(fieldName, invoke);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }
}

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