回答：服务器自定义函数package com.fr.function;import com.fr.script.AbstractFunction;public class Stringyh extends AbstractFunction { public Object run(Object args) { String result = ""; Object para; para = args; String str = para.toString(); String regex = "(.{4})"; result = str.replaceAll(regex,"$1 "); return result; }}2.34.记得重启服务
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