LocalDateTime获取本月月初

要获取本月月初，可以使用以下方法：

1. 使用LocalDate类：
LocalDate now = LocalDate.now();
LocalDate firstDay = now.with(TemporalAdjusters.firstDayOfMonth());

2. 使用LocalDateTime类：
LocalDateTime date = LocalDateTime.now();
LocalDateTime firstDay = date.with(TemporalAdjusters.firstDayOfMonth());

以上两种方法都可以获取当前月份的第一天，可以根据个人需求选择使用哪种方法。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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