Java 实现回调

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目录

概述

回调函数

需求：

设计思路

介绍 Java 实现回调的四种写法：

实现思路分析

1.反射；

public class Main {
    public static void main(String[] args) throws Exception {
        Request request = new Request();
        System.out.println("[Main]:�ҿ����߳�ȥ�첽������");
        new Thread(() -> {
            try {
                request.send(CallBack.class, CallBack.class.getMethod("processResponse"));
            } catch (Exception e) {
                e.printStackTrace();
            }
        }).start();
        System.out.println("[Main]:�������ˣ���ȥ�ɵ���");
        Thread.sleep(100000);
    }
}

2.直接调用

public class Main2 {
    public static void main(String[] args) throws Exception {
        Request request = new Request();
        System.out.println("[Main]:�ҿ����߳�ȥ�첽������");
        CallBack callBack = new CallBack();
        new Thread(() -> {
            try {
                request.send(callBack);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }).start();
        System.out.println("[Main]:�������ˣ���ȥ�ɵ���");
        Thread.sleep(100000);
    }
}

3.接口调用；

public class Main {
    public static void main(String[] args) throws Exception {
        Request request = new Request();
        System.out.println("[Main]:�ҿ����߳�ȥ�첽������");
        CallBack callBack = new CallBackImpl();
        new Thread(() -> {
            try {
                request.send(callBack);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }).start();
        System.out.println("[Main]:�������ˣ���ȥ�ɵ���");
        Thread.sleep(100000);
    }
}

4.Lambda表达式。

public class Main {
	  public static void main(String[] args) throws Exception {
	        Request request = new Request();
	        System.out.println("[Main]:我开个线程去异步发请求");
	        new Thread(() -> {
	            try {
	                request.send(()-> System.out.println("[CallBack]:处理响应"));
	            } catch (Exception e) {
	                e.printStackTrace();
	            }
	        }).start();
	        System.out.println("[Main]:请求发完了，我去干点别的");
	        Thread.sleep(100000);
	    }
}

拓展实现

暂无：

性能参数测试：

1.功能测试

2.性能测试

这里主要是性能测试曲线，时间度量曲线测试：

3.高并发

接口的压力测试等

4.高可用的测试：

高可用的测试用工具。

参考资料和推荐阅读

1. https://blog.youkuaiyun.com/AAA123524457/article/details/116019124

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