在ubuntu 12上,我正在尝试运行fuse-jna的示例程序。我收到以下错误消息
syed@ubuntu:~/Downloads/fuse-jna-master/examples$ ./hellofs.sh ~/hellofs
:compileJava FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':compileJava'.
> Cannot find System Java Compiler. Ensure that you have installed a JDK (not just a JRE) and configured your JAVA_HOME system variable to point to the according directory.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
运行java -version
命令显示:
syed@ubuntu:~/Downloads/fuse-jna-master/examples$ java -version
java version "1.7.0_15"
OpenJDK Runtime Environment (IcedTea7 2.3.7) (7u15-2.3.7-0ubuntu1~12.10)
OpenJDK Client VM (build 23.7-b01, mixed mode, sharing)
javac -version
的输出:
syed@ubuntu:~/Downloads/fuse-jna-master/examples$ javac -version
javac 1.6.0_27
这些已安装在我的系统上,请参见此处的图片
http://i40.tinypic.com/2hf2j4z.png
请指导我在Ubuntu上运行此程序
答案 0 :(得分:5)
安装JDK
sudo apt-get install openjdk-7-jdk
编辑:初步答案包含jre(不是jdk)
的包答案 1 :(得分:3)
这是环境变量的问题。在etc / environment中更正java_home环境变量并重新启动ubuntu后,现在运行正常。感谢您的指导。
答案 2 :(得分:3)
这些都不适用于我的Ubuntu,真的。事实证明,有类似的东西
/usr/lib/jvm/default-java
,这是安装的java版本的符号链接。
有趣的是,这指向/usr/lib/jvm/java-7-openjdk-i386
(JDK!),但JAVA_HOME
指向完全不同的位置 - 我拥有当前最新JDK8安装的位置。
我只是更新了符号链接以指向正确的位置,但它可能会被OpenJDK7的更新覆盖...我想我必须摆脱OpenJDK。
答案 3 :(得分:2)
在看到这篇文章后,我遇到了同样的问题,我试着做了
gradle -v
java -version
javac -version
javac失败了。但是,ubuntu提示我使用以下消息安装javac
21:52:17->javac
The program 'javac' can be found in the following packages:
* default-jdk
* ecj
* gcj-4.8-jdk
* openjdk-7-jdk
* gcj-4.6-jdk
* openjdk-6-jdk
Try: sudo apt-get install <selected package>
使用openjdk-7-jdk安装javac并将以下2行添加到我的bashrc后,gradle开始工作
JAVA_HOME="/usr/lib/jvm/java-7-openjdk-amd64/jre"
PATH="$PATH:$JAVA_HOME/bin"
这里,/ usr / lib / jvm / java-7-openjdk-amd64 / jre是包含java二进制文件的目录,通过做哪个java
答案 4 :(得分:2)
安装JDK
sudo apt-get install openjdk-7-jdk
将$ JAVA_HOME指向新安装的JDK
echo $JAVA_HOME
# prints nothing
sudo echo 'JAVA_HOME=/usr/lib/jvm/java-7-openjdk-amd64' >> /etc/profile
source /etc/profile
echo $JAVA_HOME
# /usr/lib/jvm/java-7-openjdk-amd64
更新java命令符号链接
java -version
# java version "1.6.0_32"
# OpenJDK Runtime Environment (IcedTea6 1.13.4) (6b32-1.13.4-1~deb7u1)
# OpenJDK 64-Bit Server VM (build 23.25-b01, mixed mode)
which java
# /usr/bin/java
ls -l /usr/bin/java
# lrwxrwxrwx 1 root root 22 Sep 20 21:22 /usr/bin/java -> /etc/alternatives/java
ls -l /etc/alternatives/java
# lrwxrwxrwx 1 root root 42 Sep 21 00:01 /etc/alternatives/java -> /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java
sudo rm /etc/alternatives/java
sudo ln -s /usr/lib/jvm/java-7-openjdk-amd64/bin/java /etc/alternatives/java
java -version
# java version "1.7.0_65"
# OpenJDK Runtime Environment (IcedTea 2.5.1) (7u65-2.5.1-5~deb7u1)
# OpenJDK 64-Bit Server VM (build 24.65-b04, mixed mode)
再试一次
gradle compileJava
# :compileJava
# BUILD SUCCESSFUL
# Total time: 9.397 secs
答案 5 :(得分:0)
更具体地说,尝试添加gradle.properties文件并在那里指定org.gradle.java.home。当我遇到同样的问题时,它对我有用。
https://docs.gradle.org/current/userguide/build_environment.html