lambda的peek（流元素操作），filter（过滤），map（映射），limit（截断），skip（跳过），collect，distinct（去重）函数使用
原博地址 @RequestMapping(value = "/list.json", method = GET) public void list(ModelMap modelMap, String taskId, Integer currentPage, Integer pageSize) { Pagination pagination = Pagination.builder().current(currentPage).pageSize(pageSize).build(); if (StringUtils.isNotBlank(taskId)) { return; } Map<Long, TaskBO> taskMap = Maps.newHashMap(); Pager<RecordBO> boPager = recordManager.findRecordList(taskId, pagination); modelMap.addAttribute(KEY_DATA, new Pager<>(pagination, boPager.getList() .stream() .peek(recordBO -> { if (!taskMap.containsKey(recordBO.getTaskId())) { Optional<TaskBO> optionalTaskBO