错误：JAVA_HOME 设置为无效目录：/usr/lib/jvm/java-8-oracle/jre/bin/java 当我在终端中运行 gradle 命令时
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Error: JAVA_HOME is set to an invalid directory: /usr/lib/jvm/java-8-oracle/jre/bin/java when i run gradle command in terminal
提问by Ashok
I am working in Ubuntu 16.04. I need to install gradle and the gradle is installed when i checked with sudo apt list --installed command but when i use gradle -version command it shows the following error, JAVA_HOME is set to an invalid directory: /usr/lib/jvm/java-8-oracle/jre/bin/java
我在 Ubuntu 16.04 中工作。我需要安装 gradle 并且当我使用 sudo apt list --installed 命令检查时安装了 gradle 但是当我使用 gradle -version 命令时它显示以下错误，JAVA_HOME 设置为无效目录：/usr/lib/jvm/ java-8-oracle/jre/bin/java
In sudo vim /etc/environment file,
在 sudo vim /etc/environment 文件中，
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"
JAVA_HOME="/usr/lib/jvm/java-8-openjdk-amd64/"
http_proxy="http://username:password@IP:port no/"
https_proxy="https://IP:port no/"
ftp_proxy="ftp://IP:port no/"
I don't know where i made mistakes. Please help me.
我不知道我哪里出错了。请帮我。
Thanks.
谢谢。
回答by MarcoZen
On a 64bit openSuse 64 42.1 box;
在 64 位 openSuse 64 42.1 机器上；
readlink -f $(which java)
provided;
假如;
/usr/lib64/jvm/java-1.8.0-openjdk-1.8.0/jre/bin/java
But;
但;
export JAVA_HOME=/usr/lib64/jvm/jre-1.8.0-openjdk
is the path that worked and allowed java emulator to run.
是工作并允许java模拟器运行的路径。
So i think we have to manually browse our file system and see what path to choose.
所以我认为我们必须手动浏览我们的文件系统并查看选择什么路径。
回答by asatsi
I see a mismatch. In your enviornment file the JAVA_HOME is set to "/usr/lib/jvm/java-8-openjdk-amd64/" and your mentioned that the error that you got relates to the JAVA_HOME as "/usr/lib/jvm/java-8-oracle/jre/bin/java"
我看到了不匹配。在您的环境文件中，JAVA_HOME 设置为“/usr/lib/jvm/java-8-openjdk-amd64/”，并且您提到您得到的错误与 JAVA_HOME 相关为“/usr/lib/jvm/java- 8-oracle/jre/bin/java"
If you JAVA is really installed in /usr/lib/jvm/java-8-oracle directory, then you need to ensure that the JAVA_HOME is set to that directory. And also your PATH reflects $JAVA_HOME/bin in it.
如果你的JAVA真的安装在/usr/lib/jvm/java-8-oracle目录下，那么你需要确保JAVA_HOME设置在那个目录下。而且您的 PATH 也在其中反映了 $JAVA_HOME/bin 。
I typically install Oracle JDK/JRE separately in a separate directory such as /usr/local/jdk1.8.0 etc.
我通常将 Oracle JDK/JRE 单独安装在一个单独的目录中，例如 /usr/local/jdk1.8.0 等。
回答by Lakshan Mamalgaha
check the jvm installtion folder from Files eg : /usr/lib/jvm/java-12-oracle
从文件中检查 jvm 安装文件夹，例如：/usr/lib/jvm/java-12-oracle
then in terminal run sudo nano /etc/environment and add the line JAVA_HOME="/usr/lib/jvm/java-12-oracle"
然后在终端运行 sudo nano /etc/environment 并添加行 JAVA_HOME="/usr/lib/jvm/java-12-oracle"
Then open terminal and run
export JAVA_HOME="/usr/lib/jvm/java-12-oracle"
然后打开终端并运行
export JAVA_HOME="/usr/lib/jvm/java-12-oracle"
