试图从PHP运行一个jar

Question

After reading some of the posts in this website related to exactly the same issue I've got, I found that none of them were giving me a successful result:

How to run a jar from a web server using PHP

Run Java class file from PHP script on a website

why exec('java -jar file.jar') dont work on browser but works on command line?

I'm using a Windows Server 2008 R2 datacenter, 64 bits, it's an EC2 instance from AWS. The command that I use to run my jar in a php file is exec, which works for any phyton script and normal .exe programs. But when it comes to a jar, it does nothing.

This is my code (my jar needs 5 parameters):

$script = "java -jar scripts/IDW.jar 5 none 2 values_grid values";      
$result = exec($script, $output);
if ($result) {
    print_r($output);           
}
else {
    echo "Failed";
}
echo "<br/>Result: ". $result;

The result I have is:

Failed
Result:

When I run the jar on console, it runs perfectly, but not from PHP, which means I am passing the right parameter values at the above Php code.

Java version: 1.7.0_51 and PHP version: 5.4.26

I would highly appreciate any comments on this.

Answer 1

This is not a straight answer, but if calling java from Php does not work under any circumstances, you can also run jar files from Python scripts. I mean Php --> Python --> jar.

Calling Python scripts from Php always works for me.

This post helped me in the past:

Python: How can I execute a jar file through a python script