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Run compiled class in separate Java process #6
Description
Hi @trung,
I'm using your library to compile code that's coming from a web interface. After compilation I'm running the compiled class to evaluate the output.
If a user inputs something like System.exit(0);, the server will crash. I tried to prevent this by running the compiled class in a separate process like this:
public static int exec(Class clazz) throws IOException,
InterruptedException {
String javaHome = System.getProperty("java.home");
String javaBin = javaHome +
File.separator + "bin" +
File.separator + "java";
String classpath = System.getProperty("java.class.path");
String className = clazz.getCanonicalName();
ProcessBuilder builder = new ProcessBuilder(
javaBin, "-cp", classpath, className);
Process process = builder.start();
process.waitFor();
return process.exitValue();
}The problem with this is that I'm getting a "Class not found" error everytime I try to run the compiled class like this.
Is it possible to run the compiled class in a separate process using another way?
Activity
trung commentedon Sep 24, 2017
I think it's due to the your application class loader can't find the class which was dynamically compiled.
I need to try this myself but my thinking is that there should be additional step in your application to load the dynamic compiled class in the application class loader.