JAVA中将对象转为Map类型

之前讲过将Map转为JAVA对象的文章，那么问题来了，如果要把JAVA对象转为Map，又该怎么操作呢？
这里亲测了2个方法可行，但目前这2个方法都是基于简单JAVA Bean的情况（即Bean中不能嵌套非基本类型的对象）。

１.通过Introspector来实现

    public static Map<String, Object> objectToMap1(Object obj) {

        if (obj == null) {

            return null;

        }

        Map<String, Object> map = new HashMap<String, Object>();

        try {

            BeanInfo beanInfo = Introspector.getBeanInfo(obj.getClass());

            PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();

            for (PropertyDescriptor property : propertyDescriptors) {

                String key = property.getName();

                if (key.compareToIgnoreCase("class") == 0) {

                    continue;

                }

                Method getter = property.getReadMethod();

                Object value = getter != null ? getter.invoke(obj) : null;

                map.put(key, value);

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

        return map;

    }

　　
２.通过com.alibaba.fastjson.JSON来实现

    @SuppressWarnings("unchecked")

    public static Map<String, Object> objectToMap2(Object obj) {

        return JSON.parseObject(JSON.toJSONString(obj), Map.class);

    }

 以下是测试过程：

    public static void main(String[] args) {

        SingleWithdrawCallBackMessage message = new SingleWithdrawCallBackMessage();

        message.setAcqSerialNo(2017080100000999L);

        message.setBankNo("111111111111112");

        message.setErrorMessage("");

        message.setFundPayNo("1111111111111112");

        message.setOrderTime("2017-08-01 12:00:00");

        message.setOutOrderNo("2017080100000001");

        message.setPoundageAmount(0L);

        message.setStatus(SingleWithdrawStatus.SINGLE_WITHDRAW_SUCCESS.getCode());

        message.setWithdrawAmount(500L);

        Map<String, Object> map = null;

        map = objectToMap1(message);

        System.out.println(map);

        Map<String, Object> map2 = objectToMap2(message);

        System.out.println(map2);

    }

　　
输出结果：
{fundPayNo=1111111111111112, poundageAmount=0, orderTime=2017-08-01 12:00:00, bankNo=111111111111112, errorMessage=, acqSerialNo=2017080100000999, withdrawAmount=500, outOrderNo=2017080100000001, status=03}

{fundPayNo=1111111111111112, poundageAmount=0, orderTime=2017-08-01 12:00:00, bankNo=111111111111112, errorMessage=, acqSerialNo=2017080100000999, withdrawAmount=500, outOrderNo=2017080100000001, status=03}

 

JAVA中将对象转为Map类型的相关教程结束。