简单使用JAVA反射

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/qq_34579060/article/details/89001890

通过反射获得传入集合数据中每个元素字段的值

private static String[] filedArray = {"bookName", "bookDesc", "createTime"};

    @RequestMapping("/getData")
    @ResponseBody
    public List<Object> getData() {
        List<Book> list = bookService.queryBookList();
        return handle(list,filedArray);
    }

    private <T> List<Object> handle(List<T> list, String[] filedArray) {
        List<Object> objs = new ArrayList<>();
        for (T t : list) {
            Class cls = t.getClass();
            for (String value : filedArray) {
                Field field = ReflectionUtil.getDeclaredField(cls, value);
                field.setAccessible(true);
                try {
                    Object obj = field.get(t);
                    objs.add(obj);
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                }
            }
        }
        return objs;
    }