java 反射获得类的属性和父类的属性，属性值

demo1.java

try {
    Class<?> clazz = param.getClass();
    for (; clazz != Object.class; clazz = clazz.getSuperclass()) {
        Field[] fields = clazz.getDeclaredFields();
        for (Field field : fields) {
            int mod = field.getModifiers();
            if (Modifier.isStatic(mod) || Modifier.isFinal(mod)) {
                continue;
            }
            field.setAccessible(true);
            Object val = field.get(param);
            if (val instanceof String) {
                String value = (String) val;
                if (StringUtils.isNotEmpty(value)) {
                    value = new String(value.getBytes("ISO8859-1"), "utf-8");
                }
                field.set(param, value);
            }
        }
    }
} catch (Exception e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

demo2.java

public static Object getFieldVal(final Object obj, final String fieldName, final boolean throwException) {
        if (obj != null) {
            for (Class<?> classOrSuperclass = obj.getClass(); classOrSuperclass != null; //
                    classOrSuperclass = classOrSuperclass.getSuperclass()) {
                try {
                    final Field field = classOrSuperclass.getDeclaredField(fieldName);
                    if (!field.isAccessible()) {
                        field.setAccessible(true);
                    }
                    return field.get(obj);
                } catch (final NoSuchFieldException e) {
                    // Try parent
                } catch (final Throwable e) {
                    if (throwException) {
                        throw new IllegalArgumentException("Could not get value of field \"" + fieldName + "\"", e);
                    }
                }
            }
            if (throwException) {
                throw new IllegalArgumentException("Field \"" + fieldName + "\" doesn't exist");
            }
        } else if (throwException) {
            throw new NullPointerException("Can't get field value for null object");
        }
        return null;
    }