日志：控制异常堆栈跟踪的格式

Question

我在Scala/Play2.2.0应用程序上使用Logback 1.0.13。现有配置如下所示：

  <appender name="FILE" class="ch.qos.logback.core.FileAppender">
    <file>${application.home}/logs/application.log</file>
    <encoder>
     <pattern>%date [%level][%logger{1}][%thread{1}] %message%xException%n</pattern>
    </encoder>
  </appender>

play.api.Configuration$$anon$1: Configuration error[Cannot connect to database [default]]
at play.api.Configuration$.play$api$Configuration$$configError(Configuration.scala:92) ~[play_2.10-2.2.0.jar:2.2.0]
at play.api.Configuration.reportError(Configuration.scala:570) ~[play_2.10-2.2.0.jar:2.2.0]
at play.api.db.BoneCPPlugin$$anonfun$onStart$1.apply(DB.scala:252) ~[play-jdbc_2.10-2.2.0.jar:2.2.0]

play.api.Configuration$$anon$1: Configuration error[Cannot connect to database [default]]
>>> at play.api.Configuration$.play$api$Configuration$$configError(Configuration.scala:92) ~[play_2.10-2.2.0.jar:2.2.0]
>>> at play.api.Configuration.reportError(Configuration.scala:570) ~[play_2.10-2.2.0.jar:2.2.0]
>>> at play.api.db.BoneCPPlugin$$anonfun$onStart$1.apply(DB.scala:252) ~[play-jdbc_2.10-2.2.0.jar:2.2.0]

Answer 1

我想出了这样的办法：

       <pattern>%date [%level][%logger{1}][%thread{1}] 
         %message%replace(%xException){"\n", "\\n"}%nopex%n</pattern>  

%replace机制对stacktrace文本有效。您还需要%nopex来防止原始stacktrace再次出现；否则，Logback会“有帮助地”注意到您省略了跟踪并为您包含它。