在Notepad++中补前导零并调整小数位数的方法求助

首先先明确你的需求和原始数据：

需求： #

• 给第4列的值补前导零，让它正好是5位
• 第5列要变成没有小数的整数
• 第6列要保留两位小数

原始数据： #

"058300000228",1,1,"52238",1.0000,0.0000
"058300000228",100,1,"52238",1.0000,0.0000
"058300000228",1,0,"0218",200.0000,8.3400
"058300000228",100,0,"0218",200.0000,8.3400
"058300000229",1,1,"51952",1.0000,0.0000
"058300000229",400,1,"51952",1.0000,0.0000
"058300000229",1,0,"0227",400.0000,158.3600
"058300000229",400,0,"0227",400.0000,158.3600
"058300000230",1,1,"1450",84.0000,335.1600
"058300000230",14,1,"1450",84.0000,335.1600

解决方法（用Notepad++正则替换） #

打开你的文件后，按Ctrl+H打开替换窗口，查找模式选择「正则表达式」，然后按顺序执行以下替换操作：

1. 给第4列补前导零到5位

我们分四次处理不同长度的数字（确保所有情况都覆盖）：

• 处理4位数字：
  查找内容：((?:[^,]+,){3})"(\d{4})"
  替换为：\1"0\2"
  点击「全部替换」
• 处理3位数字：
  查找内容：((?:[^,]+,){3})"(\d{3})"
  替换为：\1"00\2"
  点击「全部替换」
• 处理2位数字：
  查找内容：((?:[^,]+,){3})"(\d{2})"
  替换为：\1"000\2"
  点击「全部替换」
• 处理1位数字：
  查找内容：((?:[^,]+,){3})"(\d{1})"
  替换为：\1"0000\2"
  点击「全部替换」

执行完后，第4列的数字都会变成恰好5位，比如原来的"0218"会变成"00218"，"1450"变成"01450"，"52238"保持不变。

2. 把第5列转为无小数的整数

查找内容：((?:[^,]+,){4})(\d+)\.\d+
替换为：\1\2
点击「全部替换」
这样像1.0000就会变成1，200.0000变成200，完美去掉小数部分。

3. 让第6列保留两位小数

查找内容：((?:[^,]+,){5})(\d+\.\d{2})\d+
替换为：\1\2
点击「全部替换」
这一步会把多余的末尾零去掉，比如0.0000变成0.00，8.3400保持8.34，完全符合要求。

处理完后，你的数据就会变成这样：

"058300000228",1,1,"52238",1,0.00
"058300000228",100,1,"52238",1,0.00
"058300000228",1,0,"00218",200,8.34
"058300000228",100,0,"00218",200,8.34
"058300000229",1,1,"51952",1,0.00
"058300000229",400,1,"51952",1,0.00
"058300000229",1,0,"00227",400,158.36
"058300000229",400,0,"00227",400,158.36
"058300000230",1,1,"01450",84,335.16
"058300000230",14,1,"01450",84,335.16

备注：内容来源于stack exchange，提问作者Eronsele Ehiametalor