macos JAVA_HOME 未正确定义 编译时出错
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JAVA_HOME is not defined correctly Error while compiling
提问by MobX
I am developing an aplication in cocoa which uses some java classes .I am getting an error "JAVA_HOME is not defined correctly We cannot execute /System/Library/Frameworks/JavaVM.framework/Home/bin/java".I dont know how to resolve this..Please anyone help me..
我正在可可中开发一个使用一些 java 类的应用程序。我收到一个错误“JAVA_HOME 没有正确定义我们无法执行 /System/Library/Frameworks/JavaVM.framework/Home/bin/java”。我不知道如何解决这个..请任何人帮助我..
Thanks in advance
提前致谢
回答by Alex
export JAVA_HOME=`/usr/libexec/java_home` is exactly what you want to do.
In fact, all of the Apache projects (well, any project really) that hardcodes /System/Library/Frameworks/JavaVM.framework/Versions/... needs to use /usr/libexec/java_home if it exists. It's the only way you will know if Java is actually installed.
事实上，所有硬编码 /System/Library/Frameworks/JavaVM.framework/Versions/... 的 Apache 项目（实际上是任何项目）都需要使用 /usr/libexec/java_home 如果它存在。这是您知道是否实际安装了 Java 的唯一方法。
At some point in the future the symlinks in /System/Library/Frameworks/JavaVM.framework/Versions/ will be going away, which will even more severely break these projects if they want to load using an Oracle/OpenJDK JVM.
在未来的某个时候，/System/Library/Frameworks/JavaVM.framework/Versions/ 中的符号链接将消失，如果它们想使用 Oracle/OpenJDK JVM 加载，这将更严重地破坏这些项目。
回答by liwp
Set JAVA_HOMEto point to the .../Homedirectory, not the javabinary. E.g.
设置JAVA_HOME为指向.../Home目录，而不是java二进制文件。例如
export JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Home
Why are you setting the environment variable in the first place? You shouldn't have to do this on OS X...
为什么要首先设置环境变量？你不应该在 OS X 上这样做......
回答by user3445140
In your .bashrc file, add below lines:
在您的 .bashrc 文件中，添加以下几行：
export JAVA_HOME=/usr
export PATH=$PATH:$JAVA_HOME
This worked for me.
这对我有用。
回答by shaunthomas999
Add the following line to ~/.mavenrcfile
将以下行添加到~/.mavenrc文件中
export JAVA_HOME=$(/usr/libexec/java_home)
Reference: Maven ignoring JAVA_HOME on OSX?
回答by jiaojiao wang
Some times changing Java_HOME does not help, because in apache ant script the java_home is hardcoded. If when you change the JAVA_HOME still failed to run ant, you can try to change the default hardcode to your JAVA_HOME in ant script, like:
有时更改 Java_HOME 没有帮助，因为在 apache ant 脚本中 java_home 是硬编码的。如果更改 JAVA_HOME 后仍然无法运行 ant，您可以尝试在 ant 脚本中将默认硬编码更改为您的 JAVA_HOME，例如：
$ vi /Users/apache-ant-1.8.3/bin/ant
#ant from line 83 to 93
case "`uname`" in
CYGWIN*) cygwin=true ;;
Darwin*) darwin=true
if [ -z "$JAVA_HOME" ] ; then
#delete JAVA_HOME=XXXXX(default line) , and give JAVA_HOME ur java home url
JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home
fi
;;
MINGW*) mingw=true ;;
esac
回答by Nikita
This can also happen because of the misconfigured jenv, in case it is installed.
jenv如果安装了错误配置，也可能会发生这种情况。
In the ~/.bash_profile, there should be these 3 lines:
在 中~/.bash_profile，应该有以下 3 行：
export PATH="$HOME/.jenv/bin:$PATH"
eval "$(jenv init -)"
eval "$(jenv enable-plugin export)"
Then reload it by: source ~/.bash_profile
然后通过以下方式重新加载它： source ~/.bash_profile
