springboot使用log4j打日誌,非常簡單,首頁需要在pom文件中屏蔽掉默認的日誌方式spring-boot-starter-logging,並引入log4j相關依賴(如果其他依賴也使用了跟log4j不相容的也排除掉即可):
<!-- log4j start -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j</artifactId>
<version>1.3.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</dependency>
<!-- log4j end -->
在項目目錄下創建res文件夾,創建log4j.properties文件,你也可以放到src/main/resources下面,此時不需要再加如下的語句:
PropertyConfigurator.configure(System.getProperty("logging.config", "res/log4j.properties"));
我們這裏使用res目錄是考慮到不同的環境可能需要不同的日誌級別,只需要修改res目錄下的配置即可。在啓動類中這樣設置:
@EnableAutoConfiguration
@ComponentScan(basePackages = "cn.lovecto.promotion")
@MapperScan(basePackages = "cn.lovecto.promotion.dao.mapper")//數據庫訪問mapper接口所在包名
@EnableScheduling
@EnableAsync
@EnableTransactionManagement
public class Application {
public static void main(String[] args) {
//放到自定義的res目錄下的方式
PropertyConfigurator.configure(System.getProperty("logging.config", "res/log4j.properties"));
SpringApplication.run(Application.class, args);
}
}
log4j.properties在springboot中的配置並沒有什麼特殊說明的,由於我們使用tk.mybatis通用mapper,如果要打印日誌查看sql,可以在log4j.properties中加入如下內容即可。
log4j.rootLogger=INFO,err,stdout
#數據庫訪問mapper接口所在包日誌級別
log4j.logger.cn.lovecto.promotion.dao.mapper=DEBUG,db
#db.log,每天一個文件
log4j.logger.db=DEBUG,db
log4j.appender.db=org.apache.log4j.DailyRollingFileAppender
log4j.appender.db.Threshold=DEBUG
log4j.appender.db.File=./logs/db.log
log4j.appender.db.layout=org.apache.log4j.PatternLayout
log4j.appender.db.layout.ConversionPattern=%5p %d{yyyy-MM-dd HH\:mm\:ss} [%F\:%L] %m %n
運行單元測試,控制檯和db.log中打印出:
DEBUG 2018-08-03 15:52:28 [BaseJdbcLogger.java:159] ==> Preparing: SELECT id,promotion_name,advance_start_time,booking_start_time,booking_end_time,checkin_start_time,checkin_end_time,promotion_type,promotion_value,promotion_icon,remark,enable_inventory,inventory,promotion_price_icon,inventory_factor,use_coupon,max_ordernum,enable_refund,refund_percent,quantity_limit,status FROM promotion WHERE ( booking_start_time >= ? and booking_end_time < ? )
DEBUG 2018-08-03 15:52:28 [BaseJdbcLogger.java:159] ==> Parameters: 2018-08-03 15:52:28.123(Timestamp), 2018-08-03 15:52:28.123(Timestamp)
DEBUG 2018-08-03 15:52:28 [BaseJdbcLogger.java:159] <== Total: 0