Java动态编译的使用

package com.liming.dynamiccompile;

import javax.tools.JavaCompiler;
import javax.tools.ToolProvider;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;

public class DynamicCompile {
    public static void main(String[] args){
        System.out.println("Hello DynamicCompile");

        JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler();

        if(0 == javaCompiler.run(null,null,null,"res/HelloWorld.java")){
            try {

                URLClassLoader urlClassLoader = new URLClassLoader(new URL[]{new URL("file://"+System.getProperty("user.dir")+"/res/HelloWorld")});
                Class<?> xlass = urlClassLoader.loadClass("HelloWorld");


                Constructor<?> c = xlass.getConstructor();
                Object o = c.newInstance();
                Method m = xlass.getMethod("main", String[].class);

                Object[] argx = {new String[]{"人在江湖飘飘","飞出恩怨两刀","江湖飘"}};
                m.invoke(o,argx);

            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            } catch (NoSuchMethodException e) {
                e.printStackTrace();
            } catch (InstantiationException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } catch (InvocationTargetException e) {
                e.printStackTrace();
            } catch (MalformedURLException e) {
                e.printStackTrace();
            }

        }





    }
}