java - 正则表达式更新日期精度

Question

我有一个包含以下日期范围格式变体的字符串。我需要使用单个 java 正则表达式模式查找并替换小时精度。日期范围是可变的。你能为我想出一个正则表达式吗？

字符串示例

发布日期:{05/31/16.23:41:24-?}

发布日期:{05/31/16.23:41:24-06/21/16.23:41:24}

预期结果

发布日期:{05/31/16.23:00:00-?}

发布日期:{05/31/16.23:00:00-06/21/16.23:00:00}

Answer 1

描述

此正则表达式将查找看起来像日期/时间戳的子字符串，例如 05/31/16.23:41:24。它将捕获日期和小时部分，并允许您用 00 替换分钟和秒。

([0-9]{2}\/[0-9]{2}\/[0-9]{2}\.[0-9]{2}):[0-9]{2}:[0-9]{2}

替换为: $1:00:00

示例

现场演示

https://regex101.com/r/qK8bL7/1

示例文本

published_date:{05/31/16.23:41:24-?}

published_date:{05/31/16.23:41:24-06/21/16.23:41:24}

更换后

published_date:{05/31/16.23:00:00-?}

published_date:{05/31/16.23:00:00-06/21/16.23:00:00}

说明

NODE                     EXPLANATION
----------------------------------------------------------------------
  (                        group and capture to \1:
----------------------------------------------------------------------
    [0-9]{2}                 any character of: '0' to '9' (2 times)
----------------------------------------------------------------------
    \/                       '/'
----------------------------------------------------------------------
    [0-9]{2}                 any character of: '0' to '9' (2 times)
----------------------------------------------------------------------
    \/                       '/'
----------------------------------------------------------------------
    [0-9]{2}                 any character of: '0' to '9' (2 times)
----------------------------------------------------------------------
    \.                       '.'
----------------------------------------------------------------------
    [0-9]{2}                 any character of: '0' to '9' (2 times)
----------------------------------------------------------------------
  )                        end of \1
----------------------------------------------------------------------
  :                        ':'
----------------------------------------------------------------------
  [0-9]{2}                 any character of: '0' to '9' (2 times)
----------------------------------------------------------------------
  :                        ':'
----------------------------------------------------------------------
  [0-9]{2}                 any character of: '0' to '9' (2 times)
----------------------------------------------------------------------