java类反射读取配置文件

//配置文件内容
className=xxx
methodName=xxx

import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Properties;

//通过反射运行配置文件
public class ReflectDemo7 {
    public static void main(String[] args) throws IOException, ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException, InstantiationException {

        //Properties读取文件获取键值对
        Properties properties = new Properties();
//        两种读取方式都行
//        FileReader fileReader = new FileReader("Example1\\class.txt");
        ClassLoader classLoader = ReflectDemo7.class.getClassLoader();
        InputStream resource = classLoader.getResourceAsStream("pro.properties");
        properties.load(resource);
//        fileReader.close();
        //获取值
        String className = properties.getProperty("className");
        String methodName = properties.getProperty("methodName");
        //执行方法
        Class<?> aClass = Class.forName(className);
        Object instance = aClass.newInstance();
        Method method = aClass.getMethod(methodName);
        method.invoke(instance);
    }
}