java 找不到logstash的java安装错误
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Cannot locate java installation error for logstash
提问by Asma Zinneera Jabir
I downloaded Logstash-1.5.0 on Windows 8.1 and tried to run it in the command prompt.
我在 Windows 8.1 上下载了 Logstash-1.5.0 并尝试在命令提示符下运行它。
First I checked the java version.
Then changed the directory to logstash-1.5.0/binthen entered the command logstash -e 'input { stdin { } } output { elasticsearch { host => localhost } stdout { } }'it gave the following error:
首先我检查了java版本。然后将目录更改为logstash-1.5.0/bin然后输入命令logstash -e 'input { stdin { } } output { elasticsearch { host => localhost } stdout { } }'它给出了以下错误：
Cannot locate java installation, specified by JAVA_HOME
找不到 Java 安装，由 JAVA_HOME 指定
The Logstash folder is on C: and the version of Java is 1.7.0_25. I've set the JAVA_HOME environmental variables to the jdk/bin directory, but still it doesn't work.
Logstash 文件夹在 C: 上，Java 版本为 1.7.0_25。我已经将 JAVA_HOME 环境变量设置为jdk/bin 目录，但仍然不起作用。
I'm new to Logstash. Can somebody tell me in detail why this happens and help me fix it?
我是 Logstash 的新手。有人可以详细告诉我为什么会发生这种情况并帮助我解决吗？
回答by Razib
Set the JAVA_HOMEand PATHenvironmental variables like this:
设置JAVA_HOME和PATH这样的环境变量：
JAVA_HOME = C:\Program Files\Java\jdk1.7.0_25
PATH = C:\Program Files\Java\jdk1.7.0_25\bin
回答by Tomá? Fejfar
In my case the problem was that I set the JAVA_HOMEvariable with a space in the end:
就我而言，问题是我最后JAVA_HOME用空格设置了变量：
"set JAVA_HOME=c:\Programs\Java "
instead of
代替
"set JAVA_HOME=c:\Programs\Java"
And logstash couldn't figure that out :) Removing the space fixed the issue.
而 logstash 无法弄清楚:) 删除空间解决了这个问题。
回答by Rene M.
On Windows when you change environment over the system settings, you have to close and reopen the command shell, before the changes take effect.
在 Windows 上，当您通过系统设置更改环境时，您必须在更改生效之前关闭并重新打开命令外壳。
Step by step:
一步步：
- Locate your java JRE installation directory you want to use. For example: "C:\Program Files\Java\jre7"
- Open start menu right click computer and select settings. In System settings window on right side click on "Extended Systemsettings".
- On Tab extended select environment variables, add your
JAVA_HOMEvariable to your path and hit OK. - Open command shell and check environment by entering "set" and hit enter. Look if
JAVA_HOMEis set.
- 找到您要使用的 java JRE 安装目录。例如：“C:\Program Files\Java\jre7”
- 打开开始菜单右键单击计算机并选择设置。在右侧的系统设置窗口中，单击“扩展系统设置”。
- 在选项卡扩展选择环境变量上，将您的
JAVA_HOME变量添加到您的路径并点击确定。 - 通过输入“set”打开命令外壳并检查环境并按回车键。看是否
JAVA_HOME设置。
If your JAVA_HOMEis now correctly set, logstash should work.
如果您JAVA_HOME现在正确设置，logstash 应该可以工作。
