利用反射实现Map对象和Object对象之间相互转化

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1. ?Map ----> Object

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    public static <T> T mapToBean(Map<String, Object> map, Class<T> obj) throws Exception {
        if (map == null) {
            return null;
        }
        Set<Entry<String, Object>> sets = map.entrySet();
        T t = obj.newInstance();
        Method[] methods = obj.getDeclaredMethods();
        for (Entry<String, Object> entry : sets) {
            String str = entry.getKey();
            String setMethod = "set" + str.substring(0, 1).toUpperCase() + str.substring(1);
            for (Method method : methods) {
                if (method.getName().equals(setMethod)) {
                    method.invoke(t, entry.getValue());
                }
            }
        }
        return t;
    }

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2. Object --> Map

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    public  Map<String,Object> objectToMap(Object obj) {
        Map<String,Object> map = new HashMap<String,Object>();
        Class<?> c = null;
        try {
            c = Class.forName(obj.getClass().getName());
            Method[] m = c.getMethods();
            for (int i = 0; i < m.length; i++) {
                String method = m[i].getName();
                if (method.startsWith("get") && !method.equals("getClass")) {
                    try {
                        Object value = m[i].invoke(obj);
                        if (value != null) {
                            String key = method.substring(3);
                            key = key.substring(0, 1).toLowerCase() + key.substring(1);
                            map.put(key, value);
                        }
                    } catch (Exception e) {
                        logger.error("出现错误");
                        e.printStackTrace();
                    }
                }
            }
        } catch (Exception e) {
            logger.error("出现错误");
            e.printStackTrace();
        }
        return map;
    }

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利用反射实现Map对象和Object对象之间相互转化

原文：http://henu-zyy.iteye.com/blog/2265844