寫幾個java反射工具方法

public class FansheUtils {
    static Field getDeclaredField(String clazz, String fieldName) throws ClassNotFoundException {        Field field=null;        Class clz = Class.forName(clazz);        //super class        for (Class<?> s = clz; s != Object.class; s = s.getSuperclass()) {            try {                field= s.getDeclaredField(fieldName);                field.setAccessible(true);            } catch (NoSuchFieldException ignored) {            }        }        return field;    }        public static <T> T getFieldValue(Object object, String fieldName) throws ClassNotFoundException {        Field field = getDeclaredField(object.getClass().getName() , fieldName);        if (field == null) {            throw new IllegalArgumentException("Could not find field [" + fieldName + "] on target [" + object + "]");        }        Object result = null;        try {            result = field.get(object);        } catch (IllegalAccessException ignored) {        }        return (T) result;    }

    public static void setFieldValue(Object object, String fieldName, Object value) throws ClassNotFoundException {        Field field = getDeclaredField(object.getClass().getName() , fieldName);        try {            //set public            if (field.isAccessible()) {                field.set(object, value);            } else {                //set privite                field.setAccessible(true);                field.set(object, value);                field.setAccessible(false);            }        } catch (IllegalAccessException ignored) {        }    }
    protected Method getMethodByName(String methodName, Class<?> entityClazz) {        Method[] methods = entityClazz.getMethods();        Method method = null;        for (Method i : methods) {            if (methodName.equals(i.getName())) {                method = i;                break;            }        }        return method;    }}

public class TestFanshe {
    static class Test{        private String name;
        private int age;
        @Override        public String toString() {            return "TestFanshe{" +                    "name='" + name + '\'' +                    ", age=" + age +                    '}';        }    }
    public static void main(String[] args) throws ClassNotFoundException {        Test test=new Test();        String name=FansheUtils.getFieldValue(test,"name");        System.out.println(name);        FansheUtils.setFieldValue(test,"name","tianjingle");        FansheUtils.setFieldValue(test,"age",1);        System.out.println(test.toString());    }}