服务器报错
![java.util.regex.PatternSyntaxException: Unclosed counted closure near index 14 [0-9a-zA-Z]{1, 20}报错 java.util.regex.PatternSyntaxException: Unclosed counted closure near index 14 [0-9a-zA-Z]{1, 20}报错](/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpnNU5TOHdZamxsTmpobU5XRm1OelkwTjJKallUTXlPR1ZoWlRJNFl6Qm1ObVE0Wmk1d2JtYz0=)
原因在于{1, 20}之间有一个空格,格式不规范,还是正则表达式不怎么懂。
之前报相似的什么near index .. \\w{1, 20}也是这点的问题。大括号的问题不改还是会报这相同的错。
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