Maven工程 服务提供方启动时没有Starting ProtocolHandler的 解决方法

在使用Dubbox构建分布式系统时,遇到服务提供者启动缺少`Starting ProtocolHandler`日志的问题。错误源于mapper XML文件配置错误,未及时查看日志导致定位问题困难。解决方法包括:配置log4j,检查数据库连接、注册中心连接及mapper XML文件。忽视日志配置会延误问题解决,强调日志重要性。

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在使用dubbox框架搭建分布式架构时,首先做了一个服务生产者和消费者的小demo,注册中心使用正常,消费者可以正常调用生产者的对象和方法,但是真正构建工程时,

首先抛出了log4j日志没有找到的 警告信息,这是因为自己根本就没有配置导致的,但是不以为然,就忽略了,

这里写图片描述

但是随后启动生产者的服务器时,却始终没有出现 Starting ProtocolHandler 的信息,只有Initializing 的信息,又不以为然,忽略了,结果启动生产者服务器访问时,一直得到初始化异常,即生产者对象的依赖注入出现了问题, 但是之前没有配置
log4j日志文件 ,一直看不到异常信息,不知道哪里出现了问题,最后先编写log4j的配置文件,在spring初始化的时候 加入初始化参数 最终看到了异常信息,通常服务注册失败的可能原因有以下几种:

  • 数据库没有连接成功
  • 注册中心没有连接成功
  • 逆向工程生成的mapper有问题,通过查看日志,最终发现确实是mapper抛出了异常

问题和解决的思路如下:

这里写图片描述

mapper包下面xml文件的配置出现问题,应该是自己在复制xml文件时更换包出现了错误,删除所有的xml文件后,重新复制正确的xml文件后,问题得到解决。

总结

今天在这个问题上花费了一个中午的时间,实在是浪费,总结起来,一开始的方向就走偏了,问题处在了Mapper的xml文件的内容上,配置信息出现了错误,应当进行xml文件的更新,但是找了半天不能从注册中心获取方法的结局,当然没有成功注册也是一个原因。

D:\Software\DevelopmentSoftware\tomcat-green-8.0.52\bin\catalina.bat run [2025-05-31 06:00:52,496] 工件 testhzjcjep2022:war exploded: 正在等待服务器连接以启动工件部署… set JAVA_HOME successfully set CLASSPATH successfully Could not locate D:\Software\DevelopmentSoftware\jdk1.7.0_51\jre\lib\tools.jar. Unexpected results may occur. =============================================================================== JAVA Environment... JAVA: D:\Software\DevelopmentSoftware\jdk1.7.0_51\jre\bin\java JAVA_HOME: D:\Software\DevelopmentSoftware\jdk1.7.0_51\jre CLASSPATH: D:\Software\DevelopmentSoftware\jdk1.7.0_51\jre\lib;D:\Software\DevelopmentSoftware\jdk1.7.0_51\jre\lib\tools.jar =============================================================================== Using CATALINA_BASE: "C:\Users\62403\AppData\Local\JetBrains\IntelliJIdea2023.2\tomcat\04732bd9-e09d-4c2c-b30f-f51153146ebb" Using CATALINA_HOME: "D:\Software\DevelopmentSoftware\tomcat-green-8.0.52" Using CATALINA_TMPDIR: "D:\Software\DevelopmentSoftware\tomcat-green-8.0.52\temp" Using JRE_HOME: "D:\Software\DevelopmentSoftware\jdk1.7.0_51\jre" Using CLASSPATH: "D:\Software\DevelopmentSoftware\tomcat-green-8.0.52\bin\bootstrap.jar;D:\Software\DevelopmentSoftware\tomcat-green-8.0.52\bin\tomcat-juli.jar" 已连接到地址为 ''127.0.0.1:10059',传输: '套接字'' 的目标虚拟机 31-May-2025 18:00:53.356 警告 [main] org.apache.catalina.startup.SetAllPropertiesRule.begin [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxSpareThreads' to '100' did not find a matching property. 31-May-2025 18:00:53.391 警告 [main] org.apache.tomcat.util.digester.SetPropertiesRule.begin [SetPropertiesRule]{Server/Service/Engine/Host} Setting property 'xmlValidation' to 'false' did not find a matching property. 31-May-2025 18:00:53.391 警告 [main] org.apache.tomcat.util.digester.SetPropertiesRule.begin [SetPropertiesRule]{Server/Service/Engine/Host} Setting property 'xmlNamespaceAware' to 'false' did not find a matching property. 31-May-2025 18:00:53.408 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Server version: Apache Tomcat/8.0.52 31-May-2025 18:00:53.411 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Server built: Apr 28 2018 16:24:29 UTC 31-May-2025 18:00:53.413 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Server number: 8.0.52.0 31-May-2025 18:00:53.413 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name: Windows 8 31-May-2025 18:00:53.424 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version: 6.2 31-May-2025 18:00:53.424 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture: x86 31-May-2025 18:00:53.424 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home: D:\Software\DevelopmentSoftware\jdk1.7.0_51\jre 31-May-2025 18:00:53.424 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version: 1.7.0_51-b13 31-May-2025 18:00:53.424 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor: Oracle Corporation 31-May-2025 18:00:53.424 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE: C:\Users\62403\AppData\Local\JetBrains\IntelliJIdea2023.2\tomcat\04732bd9-e09d-4c2c-b30f-f51153146ebb 31-May-2025 18:00:53.424 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME: D:\Software\DevelopmentSoftware\tomcat-green-8.0.52 31-May-2025 18:00:53.427 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=C:\Users\62403\AppData\Local\JetBrains\IntelliJIdea2023.2\tomcat\04732bd9-e09d-4c2c-b30f-f51153146ebb\conf\logging.properties 31-May-2025 18:00:53.427 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager 31-May-2025 18:00:53.427 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:10059,suspend=y,server=n 31-May-2025 18:00:53.428 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -javaagent:C:\Users\62403\AppData\Local\JetBrains\IntelliJIdea2023.2\captureAgent\debugger-agent.jar 31-May-2025 18:00:53.428 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote= 31-May-2025 18:00:53.428 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.port=10991 31-May-2025 18:00:53.429 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.ssl=false 31-May-2025 18:00:53.429 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.password.file=C:\Users\62403\AppData\Local\JetBrains\IntelliJIdea2023.2\tomcat\04732bd9-e09d-4c2c-b30f-f51153146ebb\jmxremote.password 31-May-2025 18:00:53.429 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.access.file=C:\Users\62403\AppData\Local\JetBrains\IntelliJIdea2023.2\tomcat\04732bd9-e09d-4c2c-b30f-f51153146ebb\jmxremote.access 31-May-2025 18:00:53.429 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.rmi.server.hostname=127.0.0.1 31-May-2025 18:00:53.429 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048 31-May-2025 18:00:53.430 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources 31-May-2025 18:00:53.430 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dignore.endorsed.dirs= 31-May-2025 18:00:53.430 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=C:\Users\62403\AppData\Local\JetBrains\IntelliJIdea2023.2\tomcat\04732bd9-e09d-4c2c-b30f-f51153146ebb 31-May-2025 18:00:53.430 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=D:\Software\DevelopmentSoftware\tomcat-green-8.0.52 31-May-2025 18:00:53.430 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=D:\Software\DevelopmentSoftware\tomcat-green-8.0.52\temp 31-May-2025 18:00:53.430 信息 [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: D:\Software\DevelopmentSoftware\jdk1.7.0_51\jre\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;D:\Software\DevelopmentSoftware\VMware Workstation\bin\;C:\Program Files\Common Files\Siemens\Automation\Simatic OAM\bin;C:\Program Files (x86)\Common Files\Intel\Shared Libraries\redist\intel64\compiler;C:\ProgramData\Oracle\Java\javapath;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\NVIDIA Corporation\NVIDIA NvDLISR;C:\Program Files\TortoiseSVN\bin;D:\Software\DevelopmentSoftware\nodejs\;D:\Software\DevelopmentSoftware\Redis\Redis-x64-3.2.100;C:\Program Files\Microsoft SQL Server\120\Tools\Binn\;D:\Software\DevelopmentSoftware\mysql8.0.34\bin;C:\Program Files\Common Files\Autodesk Shared\;C:\Program Files\Java\jdk1.8.0_152\bin;C:\Program Files\Java\jdk1.8.0_152\jre\bin;D:\Software\DevelopmentSoftware\NetSarang\Xshell 8\;D:\Software\DevelopmentSoftware\NetSarang\Xftp 8\;C:\Program Files\dotnet\;D:\Software\DevelopmentSoftware\微信web开发者工具\dll;F:\Cloud Server\Soft\VisualSVN Server\bin;D:\Software\DevelopmentSoftware\Python\Python312\Scripts\;D:\Software\DevelopmentSoftware\Python\Python312\;C:\Users\62403\AppData\Local\Microsoft\WindowsApps;;D:\Software\DevelopmentSoftware\Microsoft VS Code\bin;C:\Users\62403\AppData\Roaming\npm;. 31-May-2025 18:00:53.540 信息 [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8098"] 31-May-2025 18:00:53.562 信息 [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read 31-May-2025 18:00:53.565 信息 [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-5629"] 31-May-2025 18:00:53.567 信息 [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read 31-May-2025 18:00:53.568 信息 [main] org.apache.catalina.startup.Catalina.load Initialization processed in 445 ms 31-May-2025 18:00:53.602 信息 [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina 31-May-2025 18:00:53.602 信息 [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.0.52 31-May-2025 18:00:53.619 信息 [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8098"] 31-May-2025 18:00:53.638 信息 [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-5629"] 31-May-2025 18:00:53.641 信息 [main] org.apache.catalina.startup.Catalina.start Server startup in 73 ms 已连接到服务器 [2025-05-31 06:00:53,856] 工件 testhzjcjep2022:war exploded: 正在部署工件,请稍候… 31-May-2025 18:00:57.937 警告 [RMI TCP Connection(4)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanJspConfig Failed to process TLD with path [/WEB-INF/struts-template.tld] and URI [/WEB-INF/struts-template.tld]. The specified path does not exist. 31-May-2025 18:00:58.134 信息 [RMI TCP Connection(4)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. Server start lineuser clear! [2025-05-31 06:01:02,106] 工件 testhzjcjep2022:war exploded: 工件已成功部署 [2025-05-31 06:01:02,106] 工件 testhzjcjep2022:war exploded: 部署已花费 8,250 毫秒 31-May-2025 18:01:03.623 信息 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory D:\Software\DevelopmentSoftware\tomcat-green-8.0.52\webapps\manager 31-May-2025 18:01:03.666 信息 [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. 31-May-2025 18:01:03.672 信息 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory D:\Software\DevelopmentSoftware\tomcat-green-8.0.52\webapps\manager has finished in 49 ms
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06-01
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