我必须使用php exec运行Nutch抓取命令，但它显示
“0错误：未设置JAVA_HOME”
该命令适用于终端。 我在crawl.php中尝试了以下代码，其中放置了 apache-nutch-1.15 目录。
exec（'apache-nutch-1.15 / bin / nutch inject crawl / crawldb urls'，$ output）; \ n这就产生了上述错误。
提前感谢您提供的任何帮助。
I have to run Nutch crawl commands using php exec but it shows
"0 Error: JAVA_HOME is not set"
The command works fine with terminal. I have tried the below code in crawl.php where apache-nutch-1.15 directory is placed.
exec('apache-nutch-1.15/bin/nutch inject crawl/crawldb urls',$output);
and this gives the above mentioned error.
Thank you in advance for any assistance you can provide.
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