Question

我在使用slf4j时遇到问题，在信息和警告级别记录正常。但是，在调试级别记录日志却没有。我在调试器下检查并且log.isDebugEnabled（）为true，因此log.debug（“ INPUT：\ n” +输入）正在执行，但DEBUG.log为空。我在IntelliJ IDE选项中启用了“启用调试输出”（它添加了VM选项-Ddebug），但仍然无法使用。

(..)
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
(..)
public class LoginController {

    private static final Logger log = LoggerFactory.getLogger(LoginController.class);

    public AuthUser login(InputStream inputStream, HttpServletRequest    request) throws Exception {

      final String input = misc.InputStreamToString(inputStream);
      if (log.isDebugEnabled()) {
        log.debug("INPUT:\n" + input);
     }

     (..)
   }

更新1：

文件资源/logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

<property name="HOME" value="${user.dir}/logs"/>

<appender name="FILE-INSERT-DEBUG"
          class="ch.qos.logback.core.rolling.RollingFileAppender">
    <filter class="ch.qos.logback.classic.filter.LevelFilter">
        <level>DEBUG</level>
        <onMismatch>DENY</onMismatch>
    </filter>

    <file>${HOME}/DEBUG.log</file>
    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
        <Pattern>
            %d{yyyy-MM-dd HH:mm:ss} - %msg%n
        </Pattern>
    </encoder>

    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <!-- rollover daily -->
        <fileNamePattern>${HOME}/archived/debug.%d{yyyy-MM-dd}.%i.log.zip
        </fileNamePattern>
        <timeBasedFileNamingAndTriggeringPolicy
                class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
            <maxFileSize>10MB</maxFileSize>
        </timeBasedFileNamingAndTriggeringPolicy>
    </rollingPolicy>

</appender>

<appender name="FILE-INSERT-INFO"
          class="ch.qos.logback.core.rolling.RollingFileAppender">
    <filter class="ch.qos.logback.classic.filter.LevelFilter">
        <level>INFO</level>
        <onMatch>ACCEPT</onMatch>
        <onMismatch>DENY</onMismatch>
    </filter>
    <file>${HOME}/INFO.log</file>
    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
        <Pattern>
            %d{yyyy-MM-dd HH:mm:ss} - %msg%n
        </Pattern>
    </encoder>

    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <!-- rollover daily -->
        <fileNamePattern>${HOME}/archived/INFO.%d{yyyy-MM-dd}.%i.log.zip
        </fileNamePattern>
        <timeBasedFileNamingAndTriggeringPolicy
                class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
            <maxFileSize>10MB</maxFileSize>
        </timeBasedFileNamingAndTriggeringPolicy>
    </rollingPolicy>

</appender>

<appender name="FILE-INSERT-WARN"
          class="ch.qos.logback.core.rolling.RollingFileAppender">
    <filter class="ch.qos.logback.classic.filter.LevelFilter">
        <level>WARN</level>
        <onMatch>ACCEPT</onMatch>
        <onMismatch>DENY</onMismatch>
    </filter>
    <file>${HOME}/WARN.log</file>
    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
        <Pattern>
            %d{yyyy-MM-dd HH:mm:ss} - %msg%n
        </Pattern>
    </encoder>

    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <!-- rollover daily -->
        <fileNamePattern>${HOME}/archived/WARN.%d{yyyy-MM-dd}.%i.log.zip
        </fileNamePattern>
        <timeBasedFileNamingAndTriggeringPolicy
                class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
            <maxFileSize>10MB</maxFileSize>
        </timeBasedFileNamingAndTriggeringPolicy>
    </rollingPolicy>

</appender>

<appender name="FILE-INSERT-ERROR"
          class="ch.qos.logback.core.rolling.RollingFileAppender">
    <filter class="ch.qos.logback.classic.filter.LevelFilter">
        <level>ERROR</level>
        <onMatch>ACCEPT</onMatch>
        <onMismatch>DENY</onMismatch>
    </filter>
    <file>${HOME}/ERROR.log</file>
    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
        <Pattern>
            %d{yyyy-MM-dd HH:mm:ss} - %msg%n
        </Pattern>
    </encoder>

    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <!-- rollover daily -->
        <fileNamePattern>${HOME}/archived/ERROR.%d{yyyy-MM-dd}.%i.log.zip
        </fileNamePattern>
        <timeBasedFileNamingAndTriggeringPolicy
                class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
            <maxFileSize>10MB</maxFileSize>
        </timeBasedFileNamingAndTriggeringPolicy>
    </rollingPolicy>

</appender>
<root level="DEBUG">
    <!--<appender-ref ref="FILE-INSERT-DEBUG" />-->
    <appender-ref ref="FILE-INSERT-INFO"/>
    <appender-ref ref="FILE-INSERT-WARN"/>
    <appender-ref ref="FILE-INSERT-ERROR"/>
</root>
</configuration>

Answer 1

问题出在resources / logback.xml的逗号行中

<!--<appender-ref ref="FILE-INSERT-DEBUG" />-->

注释掉后可以使用：

</appender>
<root level="DEBUG">
    <appender-ref ref="FILE-INSERT-DEBUG"/>
    <appender-ref ref="FILE-INSERT-INFO"/>
    <appender-ref ref="FILE-INSERT-WARN"/>
    <appender-ref ref="FILE-INSERT-ERROR"/>
</root>
</configuration>

Answer 2

您可以在配置文件中配置日志级别，如下所示 resources / slf4j.xml

<configuration>
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>
                %d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
            </Pattern>
        </layout>
    </appender>
    <logger name="com.base22" level="TRACE"/>
    <root level="debug">
        <appender-ref ref="STDOUT"/>
    </root>
</configuration>

P.S。更多信息Logback Documentation“使用logback-test.xml或logback.xml进行自动配置”

slf4j无法使用log.debug（...）登录DEBUG.log

2 个答案: