java的反射

package cn.tzz.java.reflect; 
2. 
3.import cn.tzz.aop.entity.Person; 
4.import java.lang.reflect.Field; 
5.import java.lang.reflect.Method; 
6.import org.junit.Test; 
7. 
8.public class TestReflect { 
9. 
10.    /** 方法--属性复制 */ 
11.    public void fieldCopy(Object source, Object target) throws Exception { 
12.        Method[] methods = source.getClass().getDeclaredMethods(); 
13.        for (Method method : methods) { 
14.            String methodName = method.getName(); 
15.            System.out.println(methodName); 
16.            if (methodName.startsWith("get")) { 
17.                Object value = method.invoke(source, new Object[0]); 
18.                System.out.println(value); 
19.                String setMethodName = methodName.replaceFirst("(get)", "set"); 
20.                Method setMethod = Person.class.getMethod(setMethodName, 
21.                        method.getReturnType()); 
22.                setMethod.invoke(target, value); 
23.            } 
24.        } 
25.    } 
26. 
27.    /** 属性字段名、值、数据类型 */ 
28.    public void getFields(Object object)  throws Exception { 
29.        Field[] fields = object.getClass().getDeclaredFields(); 
30.        for (Field field : fields) { 
31.            field.setAccessible(true); 
32.            String classType = field.getType().toString(); 
33.            int lastIndex = classType.lastIndexOf("."); 
34.            classType = classType.substring(lastIndex + 1); 
35.            System.out.println("fieldName：" + field.getName() + ",type:" 
36.                    + classType + ",value:" + field.get(object)); 
37.        } 
38.    } 
39. 
40.    @Test 
41.    public void test() throws Exception { 
42.        Person person = new Person(); 
43.        person.setId(1L); 
44.        person.setName("AAA"); 
45.        Person person2 = new Person(); 
46.        fieldCopy(person, person2); 
47.        getFields(person2); 
48.    } 
49.}