基于反射启动Spring容器

基于反射启动Spring容器

package com.maple.test;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.IOException;

import java.lang.reflect.Constructor;

import java.lang.reflect.Method;

import java.net.URL;

import java.util.ArrayList;

import java.util.Enumeration;

import java.util.HashMap;

import java.util.List;

/**

 * author: HuaZhe Ray

 * <p>

 * describe: TODO

 * <p>

 * createDate: 2018/1/2

 * createTime: 16:16

 */

public class TestSpring {

    public static void main(String[] args) throws Exception {

        List<String> xmlPaths = new ArrayList<>();

        Enumeration<URL> resources = TestSpring.class.getClassLoader().getResources("services.xml");

        while (resources.hasMoreElements()) {

            URL nextElement = resources.nextElement();

            // not load isuwang-soa-transaction-impl

            if (!nextElement.getFile().matches(".*dapeng-transaction-impl.*"))

                xmlPaths.add(nextElement.toString());

        }

        // ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new Object[]{xmlPaths.toArray(new String[0])});

        // context.start();

        Class<?> appClass = TestSpring.class.getClassLoader().loadClass("org.springframework.context.support.ClassPathXmlApplicationContext");

        Class<?>[] parameterTypes = new Class[]{String[].class};

        //根据参数 反射构造器

        Constructor<?> constructor = appClass.getConstructor(parameterTypes);

        Object context = constructor.newInstance(new Object[]{xmlPaths.toArray(new String[0])});

//        ApplicationContext context1 = new ClassPathXmlApplicationContext("services.xml");

//        context1.getBean("testService");

        Method startMethod = appClass.getMethod("start");

        startMethod.invoke(context);

        Method m = appClass.getMethod("getBean", String.class);

        TestService service = (TestService) m.invoke(context, "testService");

        service.foo();

    }

}