假设您已经在系统中安装了Java，最好是JDK(因为您在问题中提到了它，所以适用于Windows)，您应该在安装的bin文件夹中有keytool实用程序。

如果是这种情况，接下来要做的就是将该bin文件夹添加到Windows安装的PATH环境变量中。

下次你将打开一个Windows shell，你将键入keytool，你将能够运行实际的实用程序。

Few observations while I was getting the same problem (Windows). 1. Shell pipe is important. 2. If you are using OpenSSL or Cygwin, definitely you have to install it. 3. keytool comes with JDK so either you have to point to it in the command or you have cd to the JDK/bin folder (where the exe resides) 4. The debug keystore is typically located at ~/.android/debug.keystore 5. password is "android" whether you -keypass it or type it when prompted. 6. For the alias name, you can open (DO NOT SAVE, just open and close) the keystore file with any editor and read it. 7. MOST IMPORTANT - There is a difference is specifying the keystore path within quotes and without. I got it working by using the keystore path within the double quotes. As remix090378 said and as per the instruction, this command indeed worked - cd C:\Program Files\Java\jdk1.7.0_09\bin

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

keytool位于JDK的bin目录下($JAVA_HOME/bin)。JAVA_HOME是JDK安装目录。 要使用该命令行，还应该在PATH环境变量中包含$JAVA_HOME/bin。

在Windows上

如果你使用Jetbrain的工具箱来管理Android Studio更新，路径是这样的

C:\Users\{USERNAME}\AppData\Local\JetBrains\Toolbox\apps\AndroidStudio\ch-0\202.7486908\jre\bin 

更新后，我必须手动更新/设置此路径为JAVA_HOME (jre文件夹)

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。

这取决于您的Eclipse版本(我使用的是Kepler)。 去Windows>首选项>Android>构建。

您将找到调试密钥库的位置路径以及SHA1指纹(您可以复制并使用它)