java反射(二)

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class ReflectionTester {

	@SuppressWarnings("unchecked")
	public Object objectCopy(Object object) throws Exception {
		Class<?> classType = object.getClass();
		Constructor cons = classType.getConstructor(new Class[] {});
		Object obj = cons.newInstance(new Object[] {});
		Field[] fields = classType.getDeclaredFields();
		for (Field field : fields) {
			String name = field.getName();
			String lastName = name.substring(0, 1).toUpperCase()
					+ name.substring(1);
			String getMethodName = "get" + lastName;
			String setMethodName = "set" + lastName;
			Method getMethod = classType.getMethod(getMethodName,
					new Class[] {});
			Method setMethod = classType.getMethod(setMethodName,
					new Class[] { field.getType() });
			Object value = getMethod.invoke(object, new Object[] {});
			setMethod.invoke(obj, new Object[] { value });
		}
		return obj;
	}

	public static void main(String[] args) throws Exception {
		Customer customer = new Customer("Tom", 23);
		customer.setId(1L);
		ReflectionTester test = new ReflectionTester();
		Object result = test.objectCopy(customer);
		Customer customer2 = (Customer) result;
		System.out.println(customer2.getId() + "," + customer2.getName() + ","
				+ customer2.getAge());
	}
}

class Customer {
	private Long id;
	private String name;
	private int age;

	public Customer() {
	}

	public Customer(String name, int age) {
		this.name = name;
		this.age = age;
	}

	public Long getId() {
		return id;
	}

	public void setId(Long id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}
}