logback+slf4j在Java項目中的應用樣例

一、maven依賴

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <slf4j.version>1.7.16</slf4j.version>
    <log4j.version>1.2.17</log4j.version>
    <logback.version>1.2.3</logback.version>
  </properties>
    <!-- 添加slf4j日誌api -->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <!-- 添加logback-classic依賴 -->
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-classic</artifactId>
      <version>${logback.version}</version>
    </dependency>
    <!-- 添加logback-core依賴 -->
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-core</artifactId>
      <version>${logback.version}</version>
    </dependency>

二、配置文件簡單樣例logback.xml（將logback.xml放置於src\main\resources目錄下）

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

  <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
    </encoder>
  </appender>

  <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <encoder>
      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
      <charset>utf-8</charset>
    </encoder>
    <file>log/output.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
      <fileNamePattern>log/output.log.%i</fileNamePattern>
    </rollingPolicy>
    <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
      <MaxFileSize>1MB</MaxFileSize>
    </triggeringPolicy>
  </appender>

  <root level="INFO">
    <appender-ref ref="CONSOLE" />
    <appender-ref ref="FILE" />
  </root>
</configuration>

三、代碼樣例

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