找不到"JAVA_HOME"环境变量.尝试手动设置 [英] Failed to find 'JAVA_HOME' environment variable. Try setting it manually

问题描述

我正在尝试使用以下命令在Android设备上运行示例应用程序:

I'm trying to run a sample app on my android device with the following command :

sudo ionic cordova run android --device

我遇到此错误:

Failed to find 'JAVA_HOME' environment variable. Try setting it manually.
[ERROR] An error occurred while running subprocess cordova.

        cordova build android --device exited with exit code 1.

        Re-running this command with the --verbose flag may provide more information.

我已经设置了JAVA_HOME环境变量，但这不起作用.

I already set the JAVA_HOME environment variable but that doesn't work .

~/Ionic/helloWorld$ echo $JAVA_HOME 
/usr/lib/jvm/java-12-openjdk-amd64

有什么建议吗?

推荐答案

您的 $ JAVAHOME 指向正确的位置.但是路径应该具有 $ JAVAHOME/bin 目录，而不是 $ JAVAHOME 本身.

Your $JAVAHOME is pointing to the correct location. But the path should have $JAVAHOME/bin directory and not $JAVAHOME itself.

JAVA_HOME="/opt/jdk1.12.0"
export JAVA_HOME
PATH="$PATH:$JAVA_HOME/bin"

您应该考虑改为使用Oracle Java PPA.它通常比手动安装具有更多功能.您也不必担心设置环境变量.这就是大多数人使用的方式.

You should consider using the Oracle Java PPA instead. It usually does more than what a manual installation would do. You don't have to worry about setting up the environment variables either. That's what most people use.

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer

尝试运行java -version和 javac -version 来验证路径是否已设置.

Try running java -version and javac -version to verify that the path is set.

希望有帮助.

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