我创建了一个在Tomcat 8上运行的webapp。一如既往，我想使用slf4j，在这种情况下，要使用java.util.logging作为后盾（因为它是Tomcat的默认设置）。相关的依赖关系是这样的：
<!-- logging --> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.10</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-jdk14</artifactId> <version>1.7.10</version> <scope>runtime</scope> </dependency>
我在代码中添加了一些日志语句（信息和调试），但是找不到它们。既不在控制台输出中（如果我从eclipse启动Tomcat）也不在/ logs文件夹中创建的任何日志文件中（我的应用程序运行良好）。
那么，这里缺少什么呢？我是否必须在conf / logging.properties中添加一些内容（我不想将任何日志配置打包到我的应用程序中）？是否有示例如何配置部署在tomcat中的给定Web应用程序的日志记录？
唯一的问题是Tomcat端的配置。由于Tomcat不使用普通的java.util.logging，因此配置几乎没有什么不同。因此，在conf / logging.properties中添加一些行有助于：
... handlers = 1catalina.org.apache.juli.AsyncFileHandler, 2localhost.org.apache.juli.AsyncFileHandler, 3manager.org.apache.juli.AsyncFileHandler, 4host-manager.org.apache.juli.AsyncFileHandler, 5reportExport.org.apache.juli.AsyncFileHandler, java.util.logging.ConsoleHandler .handlers = 1catalina.org.apache.juli.AsyncFileHandler, java.util.logging.ConsoleHandler ############################################################ # Handler specific properties. # Describes specific configuration info for Handlers. ############################################################ 1catalina.org.apache.juli.AsyncFileHandler.level = FINE 1catalina.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs 1catalina.org.apache.juli.AsyncFileHandler.prefix = catalina. 2localhost.org.apache.juli.AsyncFileHandler.level = FINE 2localhost.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs 2localhost.org.apache.juli.AsyncFileHandler.prefix = localhost. 3manager.org.apache.juli.AsyncFileHandler.level = FINE 3manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs 3manager.org.apache.juli.AsyncFileHandler.prefix = manager. 4host-manager.org.apache.juli.AsyncFileHandler.level = FINE 4host-manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs 4host-manager.org.apache.juli.AsyncFileHandler.prefix = host-manager. 5reportExport.org.apache.juli.AsyncFileHandler.level = FINE 5reportExport.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs 5reportExport.org.apache.juli.AsyncFileHandler.prefix = reportExport. java.util.logging.ConsoleHandler.level = FINE java.util.logging.ConsoleHandler.formatter = org.apache.juli.OneLineFormatter ############################################################ # Facility specific properties. # Provides extra control for each logger. ############################################################ org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 2localhost.org.apache.juli.AsyncFileHandler org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].level = INFO org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].handlers = 3manager.org.apache.juli.AsyncFileHandler org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].level = INFO org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].handlers = 4host-manager.org.apache.juli.AsyncFileHandler com.prodyna.reportExport.level = FINE com.prodyna.reportExport.handlers = 5reportExport.org.apache.juli.AsyncFileHandler # For example, set the org.apache.catalina.util.LifecycleBase logger to log # each component that extends LifecycleBase changing state: #org.apache.catalina.util.LifecycleBase.level = FINE # To see debug messages in TldLocationsCache, uncomment the following line: #org.apache.jasper.compiler.TldLocationsCache.level = FINE
因此，我添加了一个附加处理程序“ 5reportExport.org.apache.juli.AsyncFileHandler”，以将我的东西放入单独的文件中。然后，我像其他人一样配置了该处理程序。关键部分在最后：
com.prodyna.reportExport.level = FINE com.prodyna.reportExport.handlers = 5reportExport.org.apache.juli.AsyncFileHandler
这将对com.prodyna.reportExport包中的所有类使用已配置的处理程序。
