Question

我有一组主要值和一个子集

主要设置：public static class ClassificationCounterReducer extends TableReducer<IntWritable,IntWritable,Put> {

子集：Group1,Group2,Group3

Group1_Sub1,Group1_Sub2,Group2_Sub1,Group3_Sub1,Group3_Sub2

对于每个主列表，我只想遍历其对应的子组列表并显示输出。

当前我正在使用以下代码

Group1 ->Group1_Sub1 and Group1_Sub2

Group2 ->Group2_Sub1

Group3 ->Group3_Sub1,Group3_Sub2

上面的代码会给我输出结果：

for %%s in (

Group1,Group2,Group3

    ) do (

        echo set Main Group %%s >> Log.txt

        for %%i in (
                    Group1_Sub1,Group1_Sub2,Group2_Sub1,Group3_Sub1,Group3_Sub2
                    ) do (
                        echo Main Group is %%s and its sub group is %%i >>Log.txt
                         )
            )

我想限制他们仅通过如下所示的相应列表

set Main Group Group1 
Main Grpup is Group1 and its sub group is Group1_Sub1 
Main Grpup is Group1 and its sub group is Group1_Sub2 
Main Grpup is Group1 and its sub group is Group2_Sub1 
Main Grpup is Group1 and its sub group is Group3_Sub1 
Main Grpup is Group1 and its sub group is Group3_Sub2 
set Main Group Group2 
Main Grpup is Group2 and its sub group is Group1_Sub1 
Main Grpup is Group2 and its sub group is Group1_Sub2 
Main Grpup is Group2 and its sub group is Group2_Sub1 
Main Grpup is Group2 and its sub group is Group3_Sub1 
Main Grpup is Group2 and its sub group is Group3_Sub2 
set Main Group Group3 
Main Grpup is Group3 and its sub group is Group1_Sub1 
Main Grpup is Group3 and its sub group is Group1_Sub2 
Main Grpup is Group3 and its sub group is Group2_Sub1 
Main Grpup is Group3 and its sub group is Group3_Sub1 
Main Grpup is Group3 and its sub group is Group3_Sub2

我该如何实现？

Answer 1

在内部（%% i）循环内：

    ECHO %%i|FINDSTR /b /i /L /c:"%%s_">nul
    IF NOT ERRORLEVEL 1 echo Main Group is %%s and its sub group is %%i >>Log.txt

将Group1_Sub2回显到findstr中，该{p}查找以/b当前值+下划线开头的字符串%%s。 /i表示不区分大小写，/L表示文字比较，/c:表示要检测的字符串。

如果findstr找到了要查找的字符串，则errorlevel将被设置为0或1。 >nul禁止输出。然后可以使用常规语法测试errorlevel。

Answer 2

当您谈论变量时：以下代码自行查找主要组及其子组：

@echo off
setlocal enabledelayedexpansion

REM following line just for generating test variables:
for %%a in (1 2 3) do for %%b in (1 2 3 4) do set "Group%%a_Sub%%b=!random!"

REM search MainGroups:
for /f "delims=_" %%a in ('set group') do set "Main_%%a=Group"
REM process each MainGroup
for /f "tokens=2 delims=_=" %%a in ('set Main_') do (
  echo set Main Group %%a
  for /f "delims==" %%b in ('set %%a_') do (
    echo Main Group is %%a and its sub group is %%b and its content is !%%b!
  )
)

专业版：无需对每个变量名称进行硬编码
骗局（？）：不会列出空的（不存在的）变量（取决于您的需求，甚至可能是另一个Pro）

Windows批处理循环遍历变量的值

2 个答案: