我希望编写一个批处理脚本(Windows XP),从注册表中提取某些安装路径。
那么怎样编写这样的脚本呢?
我写了下面的内容 - 我(正如您可能从下面的例子中看到的)是一名程序员,但对批处理脚本几乎一无所知。也欢迎对以下内容提出评论:
@echo off
set Count=0
for %%a in (%*) do set /a Count+=1
if %Count% GEQ 3 goto :error
if %Count% EQU 1 goto :SET_FOUND_JAVA
if %Count% EQU 2 goto :SET_FOUND_NSIS
if %Count% EQU 0 goto :MUST_CALULATE
:SET_FOUND_JAVA
set tmp_java=%1
goto :FOUND_JAVA
:SET_FOUND_NSIS
set tmp_java=%1
set tmp_nsis=%2
goto :FOUND_NSIS
:MUST_CALULATE
For /F "tokens=*" %%I in ('REG QUERY "HKLM\SOFTWARE\JavaSoft\Java Development Kit\1.6" /v JavaHome') Do Call :PARSE_JAVA %%I
GoTo :CALCULATED_JAVA
:PARSE_JAVA
If "%1"=="" GoTo :EOF
set java_location=%1
Shift
GoTo :PARSE_JAVA
:FOUND_JAVA
set java_location=%tmp_java%
:CALCULATED_JAVA
set JAVA_HOME=%java_location%
For /F "tokens=4* skip=2" %%I in ('REG QUERY HKLM\SOFTWARE\NSIS /ve') Do Call :PARSE_NSIS %%I
GoTo :CALCULATED_NSIS
:PARSE_NSIS
If "%1"=="" GoTo :EOF
set nsis_location=%1
Shift
GoTo :PARSE_NSIS
:FOUND_NSIS
set java_location=%tmp_java%
set nsis_location=%tmp_nsis%
:CALCULATED_NSIS
set JAVA_HOME=%java_location%
set NSIS_DIR=%nsis_location%
Echo JAVA Home found at %JAVA_HOME%
Echo NSIS Home found at %NSIS_DIR%
mvn -P package -Dnsis.dir=%NSIS_DIR% clean package
go end
:error
echo USAGE %0
echo USAGE %0 [JAVA_HOME]
echo USAGE %0 [JAVA_HOME] [NSIS_HOME]
:end
编辑1:
在我的电脑上运行它会产生以下结果:
JAVA Home found at P:\Java\jdk1.6.0_20
NSIS Home found at P:\NSIS
而在另一台计算机上运行它会产生:
JAVA Home found at Files\Java\jdk1.6.0_18
NSIS Home found at
这是因为命令:
REG QUERY "HKLM\SOFTWARE\JavaSoft\Java Development Kit\1.6" /v JavaHome
生成:
! REG.EXE VERSION 3.0
HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Development Kit\1.6
JavaHome REG_SZ C:\Program Files\Java\jdk1.6.0_18