spring boot整合netty总结

spring boot整合netty总结

第一部分 加载

加载可以用2种方法 

1.使用spring 提供的注解

@PostConstructpublic  ChannelFuture start()  {    logger.warn("tcp server start init");    bossGroup = new NioEventLoopGroup(1);    workerGroup = new NioEventLoopGroup();    ChannelFuture f = null;    try {        ServerBootstrap b = new ServerBootstrap();        b.group(bossGroup, workerGroup)                .channel(NioServerSocketChannel.class)                .option(ChannelOption.SO_BACKLOG, 100)                .handler(new LoggingHandler(LogLevel.INFO))                .childHandler(new ChannelInitializer<SocketChannel>() {                    @Override                    public void initChannel(SocketChannel ch) throws Exception {                        ChannelPipeline p = ch.pipeline();                        p.addLast(new LoggingHandler(LogLevel.INFO));                        p.addLast(                                new ZDWServerHandler());                    }                });        // Start the server.        f = b.bind(portNumber).sync();        channel = f.channel();        logger.warn("tcp server start ok");        App.Instance().InitDevices();        App.Instance().InitTimer();        // Wait until the server socket is closed.    } catch (Exception e){        String msg = e.getMessage();        logger.warn(msg);    } finally{        // Shut down all event loops to terminate all threads.    }    return f;}
2.
Application继承CommandLineRunner 的方式
第二部分
为非spring boot 管理代码注入依赖，非spring boot管理的代码，无法自动注入依赖，目前测试通过的一种方法是通过保存
SpringApplication来通过
getBean获取到对应的依赖
Spring Boot部分代码

@SpringBootApplicationpublic class Application   implements ApplicationContextAware {    public static void main(String[] args) throws Exception {        SpringApplication app = new SpringApplication(Application.class);        app.setWebEnvironment(false);        app.run(args);    }    private static ApplicationContext applicationContext = null;    @Override    public void setApplicationContext(ApplicationContext applicationContext)            throws BeansException {        Application.applicationContext = applicationContext;    }    /**     * 注意 bean name默认 = 类名(首字母小写)     * 例如: A8sClusterDao = getBean("k8sClusterDao")     * @param name     * @return     * @throws BeansException     */    public static Object getBean(String name) throws BeansException {        return applicationContext.getBean(name);    }    /**     * 根据类名获取到bean     * @param <T>     * @param clazz     * @return     * @throws BeansException     */    @SuppressWarnings("unchecked")    public static <T> T getBeanByName(Class<T> clazz) throws BeansException {        try {            char[] cs=clazz.getSimpleName().toCharArray();            cs[0] += 32;//首字母大写到小写            return (T) applicationContext.getBean(String.valueOf(cs));        } catch (Exception e) {            e.printStackTrace();            return null;        }    }    public static boolean containsBean(String name) {        return applicationContext.containsBean(name);    }}

使用依赖的代码部分

deviceStatusService = Application.getBeanByName(DeviceStatusService.class);

目前使用中遇到的问题列表

1.在尝试将共用的jpa代码放到单独的module时，web引用OK，netty目前没有搞定

2.scan的basedir参数，添加jpa所在的包会导致运行出错。