部署一个不依赖tomcat容器的应用

一个task项目，应用里边都是一些定时任务。我和新入职的高开商定程序部署不依赖于tomcat。

计划赶不上变化，任务开发完成还没等上线呢，哥们要离职了。工作交接时大概说了一下上线怎么部署。

结果呢，当我在linux测试服务器上部署时，可费了一些周折。之前都是把应用部署到tomcat下面的。那位高开说过，不依赖tomcat容器的部署方式已经不是新概念了。漫长的解决过程中，有同事建议我放弃，沿用tomcat吧。我觉得有必要坚持下来，最终也坚持下来了。

一.先介绍一下项目

工程如下图。assembly/bin下有一个emax-paycenter-task.sh文件，主要是通过nohup命令来运行LauncherMain。高开说了，部署时将该shell文件放到应用的根目录下，通过执行它来启动程序。

emax-paycenter-task.sh文件里是如下命令，start用的是nohup命令：

LauncherMain.java里是一个main方法，用来初始化环境：

import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.joran.JoranConfigurator;
import org.slf4j.ILoggerFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.web.context.support.XmlWebApplicationContext;

import java.net.URL;
import java.util.concurrent.Semaphore;

/**
 * Description 启动方法
 * Date 2018/2/8 上午10:01
 */
public class LauncherMain {

    private static Logger logger= LoggerFactory.getLogger(LauncherMain.class);
    public static void main(String[] args) throws Exception {

        logger.info("init @Prop");
        Semaphore sp = new Semaphore(0);
        XmlWebApplicationContext xmlWeb = new XmlWebApplicationContext();
        xmlWeb.setConfigLocation("classpath*:*spring/spring-applicationContext.xml");
        String logbackCfg = "logback.xml";
        URL logURL = new ClassPathResource(logbackCfg).getURL();

        ILoggerFactory loggerFactory = LoggerFactory.getILoggerFactory();
        LoggerContext loggerContext = (LoggerContext) loggerFactory;

        JoranConfigurator configurator = new JoranConfigurator();
        configurator.setContext(loggerContext);
        configurator.doConfigure(logURL);

        xmlWeb.refresh();
        xmlWeb.start();
        sp.acquire();
    }

}

项目中涉及到的定时任务采用Spring的@Scheduled来实现：

@Component
public class AgentPayTask {

    @Autowired
    private LimitConfigDataHolder limitConfigDataHolder;

    @Autowired
    private AgentPayTaskService agentPayTaskService;

    private static Logger logger = LoggerFactory.getLogger(AgentPayTask.class);

    @Scheduled(cron ="0/5 * * * * ?")
    public void process() {
        System.out.println("AgentPayTask111");
        logger.info("AgentPayTask");
        Map<String, RateLimiterConfig> LimiterMap = limitConfigDataHolder.getAgentPayLimiter();
        agentPayTaskService.distributeTask(LimiterMap);
    }

}

二.linux部署

我在本地直接运行main方法，程序是没问题的，里面的定时任务都可以正常跑。

将maven打包后的emax-paycenter-task-1.0.0-SNAPSHOT-assembly.tar.gz解压部署到测试服务器上。最终执行命令

./emax-paycenter-task.sh start &

查看生成的nohup.out文件，发现总是找不到class com.emax.paycenter.LauncherMain。

后来咨询运维，发现是没有给目录分配权限所致。

技能娴熟的运维又帮忙把emax-paycenter-task.sh里的命令修正了一下。最终如下：

再次按照上面命令启动程序，查看日志文件发现只有如下一条日志：

2018-03-21 15:11:45.381 [main] INFO  [com.emax.paycenter.LauncherMain] - init @Prop

多次测试发现，程序执行到sp.acquire();这条语句时，就不动了；我在这条语句后加打印日志结果也没打印出来；定时任务也没执行。

了解了一下Semaphore信号量，把permits改成0或1或其他值，都不行。

。。。。。一个小时。。。。

。。。。。两个小时。。。。

找同事帮助，无果。

。。。。。若干小时。。。。

灵感咋现！我将怀疑的焦点放到了spring context的设置这里，是不是压根都没有设置成功呢？

xmlWeb.setConfigLocation("classpath*:*spring/spring-applicationContext.xml");

莫非是各jar包里有同名的配置文件？ 将路径参数"classpath*:*spring/spring-applicationContext.xml"改成"classpath:spring/spring-applicationContext.xml"后，查看nohup.out发现出现了新的问题：

[root@localhost emax-paycenter-task]# tail -f nohup.out
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:531)
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:295)
	... 11 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.emax.paycenter.api.service.IPayCenterFacade] 
found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. 
Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:997)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:867)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:779)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:503)
	... 13 more

同时，日志文件里存在类似问题：spring context初始化时出现了异常。项目中一个类“AgentPayTaskQueryServiceImpl”通过@Autowired依赖注入了另一个bean“IPayCenterFacade”。

而在spring context里找不到“IPayCenterFacade”这个依赖（NoSuchBeanDefinitionException），从而导致spring context创建AgentPayTaskQueryServiceImpl实例“agentPayTaskQueryServiceImpl”失败（BeanCreationException异常）。

[root@localhost emax-paycenter-task]# tail -n200 -f logback-task/task_info.log
2018-03-21 16:16:37.174 [main] INFO  [com.emax.paycenter.LauncherMain] - init @Prop
2018-03-21 16:16:39.397 [main] WARN  [org.springframework.web.context.support.XmlWebApplicationContext] - Exception encountered during context initialization - cancelling refresh attempt
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'agentPayTaskQueryServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.emax.paycenter.api.service.IPayCenterFacade com.emax.paycenter.service.impl.AgentPayTaskQueryServiceImpl.payCenterFacade; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.emax.paycenter.api.service.IPayCenterFacade] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:298) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1148) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:293) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:191) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:636) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:934) ~[spring-context-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479) ~[spring-context-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at com.emax.paycenter.LauncherMain.main(LauncherMain.java:38) [emax-paycenter-task-1.0.0-SNAPSHOT.jar:na]
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.emax.paycenter.api.service.IPayCenterFacade com.emax.paycenter.service.impl.AgentPayTaskQueryServiceImpl.payCenterFacade; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.emax.paycenter.api.service.IPayCenterFacade] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:531) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:295) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	... 11 common frames omitted
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.emax.paycenter.api.service.IPayCenterFacade] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:997) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:867) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:779) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:503) ~[spring-beans-3.2.13.RELEASE.jar:3.2.13.RELEASE]
	... 13 common frames omitted

最后，将spring applicationContext里对dubbo配置文件的import由

<import resource="classpath*:*spring/dubbo-applicationContext.xml"/>

改成

<import resource="classpath:spring/dubbo-applicationContext.xml"/>

就可以了。