7

我只在带有 atomikos 的实时服务器上遇到问题，在我的本地服务器上它运行良好。

我在服务器上遇到的问题是

init() 中的错误：日志已在使用中？

完整的异常堆栈跟踪

java.lang.RuntimeException: Log already in use?
    at com.atomikos.icatch.standalone.UserTransactionServiceImp.createDefault(UserTransactionServiceImp.java:205)
    at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(UserTransactionServiceImp.java:265)
    at com.atomikos.icatch.config.UserTransactionServiceImp.init(UserTransactionServiceImp.java:405)
    at com.atomikos.icatch.jta.UserTransactionImp.checkSetup(UserTransactionImp.java:100)
    at com.atomikos.icatch.jta.UserTransactionImp.begin(UserTransactionImp.java:115)
    at com.vs.framework.service.BlfServiceAtomIkosBean.executeService(BlfServiceAtomIkosBean.java:32)
    at com.dbhl.app.presentation.action.CreateUnitTypeAction.execute(CreateUnitTypeAction.java:128)
    at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
    at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
    at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
    at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
    at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
    at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
    at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769)
    at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698)
    at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
    at java.lang.Thread.run(Thread.java:662)
com.atomikos.icatch.SysException: Error in init(): Log already in use?
    at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(UserTransactionServiceImp.java:333)
    at com.atomikos.icatch.config.UserTransactionServiceImp.init(UserTransactionServiceImp.java:405)
    at com.atomikos.icatch.jta.UserTransactionImp.checkSetup(UserTransactionImp.java:100)
    at com.atomikos.icatch.jta.UserTransactionImp.begin(UserTransactionImp.java:115)
    at com.vs.framework.service.BlfServiceAtomIkosBean.executeService(BlfServiceAtomIkosBean.java:32)
    at com.dbhl.app.presentation.action.CreateUnitTypeAction.execute(CreateUnitTypeAction.java:128)
    at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
    at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
    at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
    at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
    at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
    at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
    at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769)
    at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698)
    at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
    at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.RuntimeException: Log already in use?
    at com.atomikos.icatch.standalone.UserTransactionServiceImp.createDefault(UserTransactionServiceImp.java:205)
    at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(UserTransactionServiceImp.java:265)
    ... 31 more
Nested exception is: 
java.lang.RuntimeException: Log already in use?
    at com.atomikos.icatch.standalone.UserTransactionServiceImp.createDefault(UserTransactionServiceImp.java:205)
    at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(UserTransactionServiceImp.java:265)
    at com.atomikos.icatch.config.UserTransactionServiceImp.init(UserTransactionServiceImp.java:405)
    at com.atomikos.icatch.jta.UserTransactionImp.checkSetup(UserTransactionImp.java:100)
    at com.atomikos.icatch.jta.UserTransactionImp.begin(UserTransactionImp.java:115)
    at com.vs.framework.service.BlfServiceAtomIkosBean.executeService(BlfServiceAtomIkosBean.java:32)
    at com.dbhl.app.presentation.action.CreateUnitTypeAction.execute(CreateUnitTypeAction.java:128)
    at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
    at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
    at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
    at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
    at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
    at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
    at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769)
    at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698)
    at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
    at java.lang.Thread.run(Thread.java:662)
ERROR: the specified log seems to be in use already. Make sure that no other instance is running, or kill any pending process if needed.
java.lang.RuntimeException: Log already in use?
    at com.atomikos.icatch.standalone.UserTransactionServiceImp.createDefault(UserTransactionServiceImp.java:205)
    at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(UserTransactionServiceImp.java:265)
    at com.atomikos.icatch.config.UserTransactionServiceImp.init(UserTransactionServiceImp.java:405)
    at com.atomikos.icatch.jta.UserTransactionImp.checkSetup(UserTransactionImp.java:100)
    at com.atomikos.icatch.jta.UserTransactionImp.rollback(UserTransactionImp.java:140)
    at com.vs.framework.service.BlfServiceAtomIkosBean.executeService(BlfServiceAtomIkosBean.java:80)
    at com.dbhl.app.presentation.action.CreateUnitTypeAction.execute(CreateUnitTypeAction.java:128)
    at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
    at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
    at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
    at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
    at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
    at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
    at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769)
    at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698)
    at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
    at java.lang.Thread.run(Thread.java:662)
com.atomikos.icatch.SysException: Error in init(): Log already in use?
    at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(UserTransactionServiceImp.java:333)
    at com.atomikos.icatch.config.UserTransactionServiceImp.init(UserTransactionServiceImp.java:405)
    at com.atomikos.icatch.jta.UserTransactionImp.checkSetup(UserTransactionImp.java:100)
    at com.atomikos.icatch.jta.UserTransactionImp.rollback(UserTransactionImp.java:140)
    at com.vs.framework.service.BlfServiceAtomIkosBean.executeService(BlfServiceAtomIkosBean.java:80)
    at com.dbhl.app.presentation.action.CreateUnitTypeAction.execute(CreateUnitTypeAction.java:128)
    at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
    at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
    at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
    at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
    at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
    at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
    at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769)
    at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698)
    at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
    at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.RuntimeException: Log already in use?
    at com.atomikos.icatch.standalone.UserTransactionServiceImp.createDefault(UserTransactionServiceImp.java:205)
    at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(UserTransactionServiceImp.java:265)
    ... 31 more
Nested exception is:

当我从这里搜索通用解决方案时 

Are these instances running in a single machine? .. like, are those running in an app server, where it is pointed to a single CARBON_HOME? .. if so, the "transaction.properties" file have to be removed from /repository/lib and should be put into each WARs classpath location. And each "transaction.properties" file has to be edited to change the log file location. This error comes when more that one instance is trying to access the same transaction log file of Atomikos, or there's also a chance that the earlier JVM shutdown was not done properly and the lock file wasn't released. In that case, you simply have to remove the log file at /repository/data/tmlog.lck file and restart the server.

我遵循这个建议。从 tomcat/common/lib 中删除属性文件到我的战争类路径。相应地更改了上述目录。我还检查了 tmlog 文件，但它在服务器上不存在。

但没有任何效果。仍然发生错误。

如果你在这里看到 atomikos 页面

The lock file in question is created to protect the transaction logs against accidental duplicate startups. Otherwise, the logs could get corrupted when two instances of the same transaction manager are recovering on the same data. Normally, it suffices to follow the hints and then delete the lock file manually if needed.

它只是说明遵循提示，但提示在哪里？

请帮我重新解决它。

atomikos 是开源的，

我检查了源代码，发现以下行抛出异常

if ( enableRecovery ) {
             //ISSUE 10077: don't complain about lock file if no logging
            try {
                lockfilestream_ = new FileOutputStream ( lockfile_ );
                lock_ = lockfilestream_.getChannel().tryLock();
                lockfile_.deleteOnExit();
            } catch ( OverlappingFileLockException failedToGetLock ) {
                //happens on windows
                lock_ = null;
            } catch ( IOException failedToGetLock ) {
                //happens on windows
                lock_ = null;
            }
            if ( lock_ == null ) {
                 System.err.println ( "ERROR: the specified log seems to be "
                        + "in use already. Make sure that no other instance is "
                        + "running, or kill any pending process if needed." );
                throw new RuntimeException ( "Log already in use?" );
            }
        }

我已经在 jta.properties com.atomikos.icatch.enable_logging=false 中将调试设置为 false 并重新启动我的服务器，但仍然是同样的错误。

Guy Padron 回答后更新

@Guy 请原谅，感谢您的回答。我知道​​您是 AtomIkos 的所有者，我经常收到您的邮件。问题在于，对于您的免费开源版本，您在代码中硬编码了默认属性，因此，如果任何用户联系从属性文件中设置它，它不会被覆盖。在我的情况下是什么问题，日志文件是由 atomikos 通过其默认属性在当前目录中创建的，因此在本地环境中没有问题，但是每当它上传到共享主机时，创建的是服务器 bin 文件夹内的文件或目录不允许，因此出现上述错误，所以我调试代码，根据我的需要修改它并在 2012 年 8 月成功。

谢谢你米希尔帕雷克

4

8 回答 8

6

当您部署了多个项目（使用 Atomikos）时，由于同时写入 atomikos 的日志文件（错误消息：'Log already in use'）而出现此问题。

要解决此问题，您必须自定义日志文件名，在 atomikos 配置中设置属性 'com.atomikos.icatch.log_base_name' ，示例如下：

<bean id="atomikosUserTransactionService" class="com.atomikos.icatch.config.UserTransactionServiceImp"
      init-method="init" destroy-method="shutdownForce">
    <constructor-arg>
        <props>
            <prop key="com.atomikos.icatch.service">com.atomikos.icatch.standalone.UserTransactionServiceFactory</prop>
            <prop key="com.atomikos.icatch.log_base_name">your_project_name_log</prop>
            <prop key="com.atomikos.icatch.output_dir">../standalone/log/</prop>
            <prop key="com.atomikos.icatch.log_base_dir">../standalone/log/</prop>
        </props>
    </constructor-arg>
</bean>

PS：请注意，我已经更改了属性“ com.atomikos.icatch.output_dir ”和“ com.atomikos.icatch.log_base_dir ”，只是为了让事情井井有条，在 JBoss 日志文件的同一目录中创建 atomikos 的日志文件。

于 2014-08-12T14:32:42.907 回答
4

必须删除一个锁定文件才能再次启动您的容器。它的名字是 tmlog.lck。在 Apache 7 中，它位于 APACHE_HOME/bin/

祝你好运。

于 2013-01-24T13:47:51.763 回答
1

在我们的案例中，原因完全不同：

我们将我们的 tomcat8 实例配置为包含所有需要的 Atomikos .jar。这主要如下所述： Atomikos Tomcat 7 Configuration

在我们的 Spring 应用程序配置中，我们需要定义 J2eeTransactionManager（由于这里已经描述了“事务暂停不可用”问题）：

@Bean
public TransactionManager atomikosTransactionManager() {
    return new J2eeTransactionManager();
}

@Bean
public PlatformTransactionManager txManager() throws Throwable {
    JtaTransactionManager jtaTransactionManager = new JtaTransactionManager();
    jtaTransactionManager.setAllowCustomIsolationLevels(true);
    jtaTransactionManager.setTransactionManager(atomikosTransactionManager());
    UserTransaction ut = userTransaction();
    jtaTransactionManager.setUserTransaction(ut);
    return  jtaTransactionManager;
}

因此，您需要在应用程序中引用 pom.xml，但此引用必须具有“提供”范围：

    <dependency>
        <groupId>com.atomikos</groupId>
        <artifactId>transactions-jta</artifactId>
        <version>3.9.3</version>
        <scope>provided</scope>
    </dependency>

在我们的例子中，我们省略了范围，因此 tomcat 和我们的应用程序创建了它自己的事务管理器实例，这导致了“日志已在使用”错误消息。

所以删除 .lock 文件在这里也有帮助。删除锁文件后，应用程序特定的事务管理器可以获得锁并且运行良好；但是在tomcat重新启动后，您会再次收到相同的错误消息。

由于我在其他地方找不到这个原因，也许这对其他人有帮助......

于 2016-08-23T12:01:51.000 回答
1

这是一个权限问题。我在我的jta.properties.（确认目录存在）中添加了这两行。

com.atomikos.icatch.output_dir = /data/logs/XXX/
com.atomikos.icatch.log_base_dir = /data/logs/XXX/
于 2016-04-19T08:57:34.853 回答
0

您确定在您的生产服务器上没有运行任何其他可以锁定 atomikos 事务日志的 JVM 吗？

于 2012-09-06T20:38:04.663 回答
0

可能有点晚了，但如果您有多个使用相同日志的事务管理器实例 (JVM)，通常会发生这种情况。尽量不要那样做:-)

高温高压

于 2013-06-23T17:52:08.247 回答
0

我也遇到了同样的错误，但情况不同。Atomikos 创建了一个不同的 java 进程，在我的情况下，java 进程在 unix 框中无限循环运行，尽管我停止了 tomcat 容器。

所以我发现使用以下命令的java进程。

ps -ef | grep java | grep -v grep

并使用此命令杀死

kill -9 pid

再次启动tomcat，它工作正常。

于 2014-05-30T18:15:32.340 回答
0 
<bean id="atomikosUserTransactionService" class="com.atomikos.icatch.config.UserTransactionServiceImp"
  init-method="init" destroy-method="shutdownForce">
<constructor-arg>
    <props>
        <prop key="com.atomikos.icatch.service">com.atomikos.icatch.standalone.UserTransactionServiceFactory</prop>
        <prop key="com.atomikos.icatch.log_base_name">your_project_name_log</prop>
        <prop key="com.atomikos.icatch.output_dir">../standalone/log/</prop>
        <prop key="com.atomikos.icatch.log_base_dir">../standalone/log/</prop>
    </props>
</constructor-arg>

这对我有用，但我不明白 your_project_name_log 在此代码中的作用。

于 2020-07-08T09:57:07.333 回答