比较具有不同精度级别的Date对象

本文介绍了比较具有不同精度级别的Date对象的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个JUnit测试失败，因为毫秒不同.在这种情况下，我不在乎毫秒.如何更改断言的精度以忽略毫秒(或我希望将其设置为任何精度)?

I have a JUnit test that fails because the milliseconds are different. In this case I don't care about the milliseconds. How can I change the precision of the assert to ignore milliseconds (or any precision I would like it set to)?

我想通过的断言示例:

Date dateOne = new Date(); dateOne.setTime(61202516585000L); Date dateTwo = new Date(); dateTwo.setTime(61202516585123L); assertEquals(dateOne, dateTwo);

推荐答案

使用 DateFormat 对象，其格式仅显示您要匹配的部分，并对结果的字符串进行assertEquals().您还可以轻松地将其包装在自己的assertDatesAlmostEqual()方法中.

Use a DateFormat object with a format that shows only the parts you want to match and do an assertEquals() on the resulting Strings. You can also easily wrap that in your own assertDatesAlmostEqual() method.