Question

bat 为什么我的赋值不成功? 谢谢

代码如下

setlocal enabledelayedexpansion

if "%BuildOutDir%" == "" (
set BuildOutDir = %~dp0
echo BuildOutDir = !BuildOutDir!
) else (
echo BuildOutDir Already defined!
)
程序输出
V:\DevCenter\CYSoftware\Build\Bat>setlocal enabledelayedexpansion

V:\DevCenter\CYSoftware\Build\Bat>if "" == "" (
set BuildOutDir = V:\Devcenter\CYSoftware\Build\Bat\
echo BuildOutDir = !BuildOutDir!
) else (echo BuildOutDir Already defined! )
BuildOutDir =

Answer 1

set BuildOutDir = %~dp0 

:: 这一句不要有空格
:: 应该是: set BuildOutDir=%~dp0
:: 中国批处理脚本联盟

Answer 2

set local=enabledelayedexpansion

追问

最上面不是写了这句了吗?

追答

感觉那行格式错误，请贴出明确错误或完整代码

追问

setlocal enabledelayedexpansion

if "%BuildOutDir%" == "" (
set BuildOutDir = %~dp0
echo BuildOutDir = !BuildOutDir!
) else (
echo BuildOutDir Already defined!
)
完整的就是这个，你复制到bat文件里就可以了

追答

我感觉这是片段，有上下文环境，请搞清该文件用途与适用场景

追问

真没有，我才开始写，输出路径如果存在就沿用，不存在就定义。但才开始就遇到问题才请高手帮忙的

追答

首行加下面代码，就看出效果了，应该是符合预期的，没什么问题
@echo off

追问

我试了没用呀? 输出这个
BuildOutDir =
请按任意键继续. . .

追答

@echo off
set local=enabledelayedexpansion
if "%BuildOutDir%" == "" (
set BuildOutDir = %~dp0%
echo BuildOutDir = !BuildOutDir!
) else (
echo BuildOutDir Already defined!
)