ApacheBeanUtils官方入门文档

Employee employee = ...;
System.out.println("Hello " + employee.getFirstName() + "!");

package beanUtils;

import java.util.HashMap;
import java.util.Map;

/**
 * Created by Andrew on 2015/12/4.
 */
public class Employee {
    String firstName;
    String lastName;
    Employee[] subordinate;
    Map address;

    public Employee(){
        firstName = "Adnrew";
        lastName = "Chen";
        subordinate = new Employee[]{new Employee("Shirley","Liu"),new Employee("Alex","Wang")};
        address = new HashMap<>();
        address.put("home", new Address("Changsha YueLuShan"));
    }

    private Employee(String firstName,String lastName){
        this.firstName = firstName;
        this.lastName = lastName;
    }


    public Address getAddress(String type) {
        return address.get(type);
    }

    public void setAddress(String type, Address address) {
        this.address.put(type, address);
    }

    public Employee getSubordinate(int index) {
        return subordinate[index];
    }

    public void setSubordinate(int index, Employee subordinate) {
        this.subordinate[index] = subordinate;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }public String getLastName() {
        return this.lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    @Override
    public String toString() {
        return firstName+" "+lastName;
    }
}

package beanUtils;

import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.beanutils.PropertyUtils;

import java.lang.reflect.InvocationTargetException;

/**
 * Created by Andrew on 2015/12/4.
 */
public class BeanUtilsTest {

    public static void main(String[] args) {
        Employee employee = new Employee();
        try {

            System.out.println((String) PropertyUtils.getSimpleProperty(employee, "firstName"));
            System.out.println((String)PropertyUtils.getSimpleProperty(employee, "lastName"));
            System.out.println(PropertyUtils.getIndexedProperty(employee, "subordinate[0]"));
            System.out.println(PropertyUtils.getMappedProperty(employee, "address(home)"));
            System.out.println(PropertyUtils.getNestedProperty(employee, "address(home).city"));

        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        }

    }
}

String city = employee.getAddress("home").getCity();

String city = (String) PropertyUtils.getNestedProperty(employee, "address(home).city");