java – Spring Boot外部Tomcat不是异步的

发布时间：2020-12-15 01:26:59 所属栏目：大数据来源：网络整理

导读：通过在Spring Boot应用程序上运行的ajax调用Callable方法时,嵌入式tomcat异步处理请求并完全正常： 2017-07-02 09:12:24.283 INFO 3582 --- [nio-8090-exec-3] c.r.web.controllers.MainController : Ali was stored in redis2017-07-02 09:12:25.671 INFO 3

通过在Spring Boot应用程序上运行的ajax调用Callable方法时,嵌入式tomcat异步处理请求并完全正常：

2017-07-02 09:12:24.283  INFO 3582 --- [nio-8090-exec-3] c.r.web.controllers.MainController       : Ali was stored in redis
2017-07-02 09:12:25.671  INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController       : Ali is searching for a chat
2017-07-02 09:12:25.820  INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController       : Ali last activity date was updated in redis
2017-07-02 09:12:26.053  INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController       : Ali retrieving random conv null
2017-07-02 09:12:26.054  INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController       : Ali created my own conversation
2017-07-02 09:12:26.211  INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController       : Ali searching...
2017-07-02 09:12:27.927  INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController       : Ali searching...
2017-07-02 09:12:29.128  INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController       : Ali searching...
2017-07-02 09:12:29.305  INFO 3582 --- [nio-8090-exec-2] c.r.web.controllers.MainController       : Zeina was stored in redis
2017-07-02 09:12:29.984  INFO 3582 --- [ngAsyncThread-2] c.r.web.controllers.MainController       : Zeina is searching for a chat
2017-07-02 09:12:30.135  INFO 3582 --- [ngAsyncThread-2] c.r.web.controllers.MainController       : Zeina last activity date was updated in redis
2017-07-02 09:12:30.285  INFO 3582 --- [ngAsyncThread-2] c.r.web.controllers.MainController       : Zeina retrieving random conv Conversation [id=bbb17857-9049-4,person1=Person [id=9a243d57-2f0c-4,name=Ali,age=22,gender=M,ip=0:0:0:0:0:0:0:1,loginDate=Sun Jul 02 09:12:23 EEST 2017,lastActiveDate=Sun Jul 02 09:12:25 EEST 2017],person2=null,creationDate=Sun Jul 02 09:12:26 EEST 2017]
2017-07-02 09:12:30.687  INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController       : Ali searching...
2017-07-02 09:39:54.420  INFO 3582 --- [ngAsyncThread-3] c.r.web.controllers.MainController       : Zeina is searching for a chat

但是,当我在外部tomcat服务器上部署应用程序时,一个调用挂起服务器,而下一个调用仅在第一次调用完成后处理.

2017-07-02 06:47:57.285  INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController       : Zanzoun searching...
2017-07-02 06:47:58.297  INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController       : Zanzoun searching...
2017-07-02 06:47:59.309  INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController       : Zanzoun searching...
2017-07-02 06:48:00.323  INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController       : Zanzoun searching...
2017-07-02 06:48:01.335  INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController       : Zanzoun searching...
2017-07-02 06:48:02.347  INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController       : Zanzoun searching...
2017-07-02 06:48:03.359  INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController       : Zanzoun searching...
2017-07-02 06:48:04.388  INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController       : Zanzoun remove dead conversatio
2017-07-02 06:48:04.682  INFO 3324 --- [SpringAsyncThread-5] c.r.web.controllers.MainController       : AJ is searching for a chat
2017-07-02 06:48:04.695  INFO 3324 --- [SpringAsyncThread-5] c.r.web.controllers.MainController       : AJ last activity date was updated in redis
2017-07-02 06:48:04.708  INFO 3324 --- [SpringAsyncThread-5] c.r.web.controllers.MainController       : AJ retrieving random conv Conversation [id=f5fe39ac-91ce-4,person1=Person [id=e25d18f3-9729-4,name=Zanzoun,age=12,gender=F,ip=91.197.46.40,loginDate=Sun Jul 02 06:47:32 UTC 2017,lastActiveDate=Sun Jul 02 06:47:48 UTC 2017],creationDate=Sun Jul 02 06:47:48 UTC 2017]
2017-07-02 06:48:50.833  INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController       : AJ is searching for a chat
2017-07-02 06:48:50.845  INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController       : AJ last activity date was updated in redis
2017-07-02 06:48:50.860  INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController       : AJ retrieving random conv null
2017-07-02 06:48:50.860  INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController       : AJ created my own conversation
2017-07-02 06:48:50.872  INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController       : AJ searching...
2017-07-02 06:48:51.884  INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController       : AJ searching...
2017-07-02 06:48:52.896  INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController       : AJ searching...
2017-07-02 06:48:53.908  INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController       : AJ searching...
2017-07-02 06:48:54.921  INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController       : AJ searching...

在上面的日志中,来自Zanzoun和AJ的电话同时被发送,但是在Zanzoun结束之前AJ处理没有开始.

下面我列出我的配置：

@Configuration
@EnableAsync
public class MvcConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("main");
        registry.addViewController("/login").setViewName("login");
        registry.addViewController("/admin").setViewName("admin");
    }

    @Override
    public void configureAsyncSupport(AsyncSupportConfigurer configurer) {
        configurer.setTaskExecutor(asyncTaskExecutor());
    }

    @Bean
    public AsyncTaskExecutor asyncTaskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(10);
        executor.setMaxPoolSize(200);
        executor.setQueueCapacity(500);
        executor.setThreadNamePrefix("SpringAsyncThread-");
        executor.initialize();
        return executor;
    }
}

@SpringBootApplication
@EnableScheduling
@EnableAsync
public class App extends SpringBootServletInitializer {
    public static void main(String[] args) {
        SpringApplication.run(App.class,args);
    }

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(App.class);
    }
}

更新1

我应用了@divine评论中提供的答案,但问题没有解决：


更新2
我已经使用外部Tomcat 8.0.21在我的Linux机器上进行了本地测试,它运行良好.但是,我在Windows中安装了相同版本的Tomcat(它实际上是一个AWS实例),问题仍然存在,所以这是一个操作系统/版本问题？
更新3
这是所要求的pom文件：


最佳答案
您是否尝试过检查实际池大小,例如,通过JMX：https://wiki.apache.org/tomcat/FAQ/Monitoring#Thread_Usage？
此外,您是否可以尝试安装APR Native库来验证问题不是自动选择的传入流量协议：https://tomcat.apache.org/tomcat-8.0-doc/apr.html
Windows EC2实例的配置也可能会影响观察到的行为,您是否也可以将其添加到问题中？
                        （编辑：李大同）
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