object转对象Java object对象转为json对象

/**
     * 把数据对象转换成json字符串 DTO对象形如：{"id" : idValue, "name" : nameValue, ...}
     * 数组对象形如：[{}, {}, {}, ...] map对象形如：{key1 : {"id" : idValue, "name" :
     * nameValue, ...}, key2 : {}, ...}
     *
     * @param object
     * @return
     */
    public static String getJSONString(Object object) {
        String jsonString = null;
        // 属性值处理器
        JsonConfig jsonConfig = new JsonConfig();
        try{
        	jsonConfig.registerJsonValueProcessor(Date.class,new JsonDateValueProcessor());
        	//整形转换为字符串
        	jsonConfig.registerJsonValueProcessor(Integer.class, new IntegerValueProcessor());
	        if (object != null) {
	            if (object instanceof Collection || object instanceof Object[]) {
	                jsonString = JSONArray.fromObject(object, jsonConfig)
	                        .toString();
	            } else {
	                jsonString = JSONObject.fromObject(object, jsonConfig)
	                        .toString();
	            }
	        }
        } catch(Exception ex){
        	ex.printStackTrace();
        }
        return jsonString == null ? "{}" : jsonString;
    }