Java的Method

Posted 2020-11-23 朝歌

1.传入一个List对象，即该对象的属性名获取该List中所有该属性的值（属性类型为String）

private static List<String> getWybsListValueByName(String fieldName, List list) {
        try {
            List<String>lists=new ArrayList<>(list.size());
            for (Object object:list) {
                String firstCode = fieldName.substring(0, 1).toUpperCase();
                String getter = "get" + firstCode + fieldName.substring(1);
                Method method = object.getClass().getMethod(getter);
                Object value = method.invoke(object);
                lists.add(value.toString());
            }
            return lists;
        } catch (Exception e) {
            return null;
        }
    }