获取LocalDate的周数（Java 8） [英] Get Week Number of LocalDate (Java 8)

问题描述

我正在尝试使用以下格式获取完整LocalDate的周数：

I'm trying to get the Week Number of a full LocalDate with the format:

dd.MM.yyy

我还没有在Java 8 Date API中找到一个返回周数的函数，我试过了创建一个算法，但它没有用。

I haven't found a function in the Java 8 Date API wich returns the Week Number and i have tried to create a algorithm, but it did'nt work.

推荐答案

一个小警告。我还没有测试过这个，但是查看 WeekFields 和 LocalDate.get ，您应该执行以下操作：

One small warning. I haven't tested this yet, but looking at the API documentation of WeekFields and LocalDate.get, you should do something like:

LocalDate date = ...;
// Or use a specific locale, or configure your own rules
WeekFields weekFields = WeekFields.of(Locale.getDefault()); 
int weekNumber = date.get(weekFields.weekOfWeekBasedYear());

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