KEYTOOL在JAVAC SDK中，所以你必须在包含jns JAVAC的目录中找到它

你也可以这样做:

将bat文件复制到PATH环境变量中已经存在的任何文件夹中 然后只需在任何Windows shell中使用keytool命令

keytool的实际位置在bat文件中定义。如果位置错误，bat文件将扫描您的系统，以检测ProgramFiles(子)文件夹中的潜在位置。

还可以找到keytool2.bat，这是"keytool -v -list -keystore"的便捷快捷方式，广泛用于快速检查jks文件的内容。

keytool.bat:

:: 
:: 
:: "keytool alias" script by Céphas
:: easy method : add the known keytool.exe folder to your personal PATH variable (run : C:\Windows\System32\rundll32.exe sysdm.cpl,EditEnvironmentVariables)
:: else, add the folder containing this bat script to your personal path or put this script in any folder already defined in your path
::
:: also see keytool2.bat that automatically adds the following parameters in the keytool command line : -v -list -keystore, for quick display of jks content
:: 
:: 
@echo off
set THIS_SCRIPT=%~f0
rem  setlocal enableDelayedExpansion : necessary for paths containing special chars
setlocal enableDelayedExpansion

rem  set PATH to keytool.exe ; path must include the final \
rem  ^ is escape char for paths containing & \ < > ^ | 
set PATH_TO=C:\Program Files\Java\jre1.8.0_45\bin\
set PROG_NAME=keytool.exe

rem full_path, with "", to work with paths containing special chars
set FULL_KT_PATH="!PATH_TO!!PROG_NAME!"

rem checks if keytool.exe exists
(dir %FULL_KT_PATH%>nul 2>nul && set KT_FOUND=yes) || set KT_FOUND=no

if %KT_FOUND%==yes (
    rem keytool found => launching it with all supplied parameters
    rem 
    rem
    %FULL_KT_PATH% %*
    rem
    rem
) else (
    rem keytool not found, trying to find it in %ProgramFiles%

    echo.
    echo Keytool not found in expected location, scan in progess ...
    echo.

    cd "%ProgramFiles(x86)%" 2>nul && dir /B /S keytool.exe 2>nul

    cd "%ProgramFiles%" 2>nul && dir /B /S keytool.exe 2>nul

    echo.
    echo *********
    echo Path to program keytool.exe not properly defined, or keytool/java missing on this system
    echo If any location has been found during above scan, fix variable "PATH_TO" in %THIS_SCRIPT% accordingly
    echo *********
    echo.
    pause
    
)    

keytool2.bat:

:: 
:: 
:: "keytool2 alias" script by Céphas
:: easy method : add the known keytool.exe folder to your personal PATH variable (run : C:\Windows\System32\rundll32.exe sysdm.cpl,EditEnvironmentVariables)
:: else, add the folder containing this bat script to your personal path or put this script in any folder already defined in your path
::
:: keytool2 automatically adds the following parameters in the keytool command line : -v -list -keystore
:: thus, to quickly display the full content of a jks file, usage is simply : keytool2 \path\to\your\keystore.jks [-alias your_alias]
:: 
:: 
@echo off
set THIS_SCRIPT=%~f0
rem  setlocal enableDelayedExpansion : necessary for paths containing special chars
setlocal enableDelayedExpansion

rem  set PATH to keytool.exe ; path must include the final \
rem  ^ is escape char for paths containing & \ < > ^ | 
set PATH_TO=C:\Program Files\Java\jre1.8.0_45\bin\
set PROG_NAME=keytool.exe


rem full_path, with "", to work with paths containing special chars
set FULL_KT_PATH="!PATH_TO!!PROG_NAME!"

rem checks if keytool.exe exists
(dir %FULL_KT_PATH%>nul 2>nul && set KT_FOUND=yes) || set KT_FOUND=no

if %KT_FOUND%==yes (
    rem keytool found => launching it with all supplied parameters
    rem 
    rem
    %FULL_KT_PATH% -v -list -keystore %*
    rem
    rem
) else (
    rem keytool not found, trying to find it in %ProgramFiles%

    echo.
    echo Keytool not found in expected location, scan in progess ...
    echo.

    cd "%ProgramFiles(x86)%" 2>nul && dir /B /S keytool.exe 2>nul

    cd "%ProgramFiles%" 2>nul && dir /B /S keytool.exe 2>nul

    echo.
    echo *********
    echo Path to program keytool.exe not properly defined, or keytool/java missing on this system
    echo If any location has been found during above scan, fix variable "PATH_TO" in %THIS_SCRIPT% accordingly
    echo *********
    echo.
    pause
    
)    

keytool是jdk的一部分，它应该是$JAVA_HOME/bin/keytool

JDK自带keytool。如果您正在使用cygwin，那么这可能已经在您的路径上了。否则，您可能会在JDK的bin文件夹中查找。

为了使shell管道(|)正常工作，您可能需要使用cygwin。

只需在Windows命令提示符中输入这些。

cd C:\Program Files\Java\jdk1.7.0_09\bin

keytool -exportcert -alias androiddebugkey -keystore "C:\Users\userName\.android\debug.keystore" -list -v

基本密码为android

您将看到MD5、SHA1和SHA256密钥;选择一个你需要的。

在我的例子中，我已经使用ionic cordova build android——prod命令生成了一个APK文件，我需要为已经存在的APK文件获取SHA-1指纹。下面是我如何通过在App目录中运行以下命令来获得它:

Keytool -list -printcert -jarfile app-debug.apk

所以，我基本上在以下应用程序位置运行上述命令:

C:\myApp\platforms\android\app\build\outputs\apk\debug>keytool -list -printcert -jarfile app-debug.apk

这给了我SHA1指纹为:7B:6B:AD:…

希望这能帮助到一些人!