直接在application.yml/properties文件中進(jìn)行配置

引入依賴：

	<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <!-- boot父依賴  可以指定版本號(hào)（指定后boot其他依賴不加版本號(hào)不報(bào)錯(cuò) 否則報(bào)錯(cuò)） -->
        <version>2.3.6.RELEASE</version>
        <relativePath/>
    </parent>
    <dependencies>
		<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <!-- 提供Web開發(fā)場景所需的底層所有依賴，springboot默認(rèn)集成了tomcat服務(wù)器 -->
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-logging</artifactId>
            <!-- 點(diǎn)進(jìn)去里面有l(wèi)ogback、log4j和slf4j -->
            <!--  如果添加了這個(gè)依賴，SpringBoot 應(yīng)用將自動(dòng)使用 logback 作為應(yīng)用日志框架 -->
        </dependency>
    </dependencies>

1、Mybatis內(nèi)置的日志工廠

Mybatis內(nèi)置的日志工廠提供日志功能，具體的日志實(shí)現(xiàn)有以下幾種工具：
slf4j
Apache Commons Logging
Log4j 2
Log4j
JDK logging
具體選擇哪個(gè)日志實(shí)現(xiàn)工具由MyBatis的內(nèi)置日志工廠確定。它會(huì)使用最先找到的（按上文列舉的順序查找）。如果一個(gè)都未找到，日志功能就會(huì)被禁用。

配置log-impl：可供選擇的有以下幾種

yml中：

mybatis-plus:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl #這個(gè)是可以打印sql、參數(shù)、查詢結(jié)果的,只會(huì)打印到控制臺(tái)不會(huì)輸出到日志文件中
			 #org.apache.ibatis.logging.log4j.Log4jImpl:這個(gè)不打印查詢結(jié)果
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: com.example.plan.entity # 指定的包名

或properties中：

# mybatis plus
mybatis-plus.mapper-locations=classpath:mapper/*Mapper.xml
mybatis-plus.type-aliases-package=com.example.plan
mybatis-plus.configuration.map-underscore-to-camel-case=true
mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl # 重點(diǎn)

StdOutImpl控制臺(tái)輸出結(jié)果：

==>  Preparing: select id, name, sex from t_user where sex = ?
==> Parameters: 0(Integer)
<==      Total: 8

/**
 *第一行是執(zhí)行的sql語句
 *第二行是傳入的參數(shù)
 *第三行是返回結(jié)果的行數(shù)
 */

補(bǔ)充：

log-impl用于設(shè)置打印sql的日志實(shí)現(xiàn)，指定的值為org.apache.ibatis.logging.Log接口的其中的一個(gè)實(shí)現(xiàn)類

在這里以StdOutImpl為例

public class StdOutImpl implements Log {

  public StdOutImpl(String clazz) {
    // Do Nothing
  }

  @Override
  public boolean isDebugEnabled() {
    return true;
  }

  @Override
  public boolean isTraceEnabled() {
    return true;
  }

  @Override
  public void error(String s) {
    System.err.println(s);
  }

  @Override
  public void debug(String s) {
    System.out.println(s);
  }

  @Override
  public void trace(String s) {
    System.out.println(s);
  }

  @Override
  public void warn(String s) {
    System.out.println(s);
  }
}

方法里面的輸出，是用的System.out/error.println方法，所以如果配置為org.apache.ibatis.logging.stdout.StdOutImpl就只會(huì)在控制臺(tái)窗口打印，不會(huì)記錄到日志文件。

如果需要保存打印SQL到文件就不能設(shè)置為StdOutImpl，可以設(shè)置為Slf4jImpl。部分代碼如下，使用的是Log的方法，保存到文件中。

  @Override
  public void error(String s) {
    log.error(s);
  }

  @Override
  public void debug(String s) {
    log.debug(s);
  }

  @Override
  public void trace(String s) {
    log.trace(s);
  }

  @Override
  public void warn(String s) {
    log.warn(s);
  }

也可以不設(shè)置。然后對應(yīng)接口所在包設(shè)置logback對應(yīng)包的日志等級(jí)[debug\info\error\warn等]，即下面所提到的第二種方式。
級(jí)別從高到低：OFF 、 FATAL 、 ERROR 、 WARN 、 INFO 、 DEBUG 、 TRACE 、 ALL

2、Spring Boot集成Mybatis

logging.file.name設(shè)置日志文件：支持絕對路徑、相對路徑，相對路徑的話是相對應(yīng)用的根目錄，比如logging.file.name=logs/demo.log;
默認(rèn)：spring.log
logging.file.path設(shè)置日志路徑：支持絕對路徑、相對路徑，比如 logging.file.path=logs，日志文件默認(rèn)會(huì)存為 spring.log；
默認(rèn)：根路徑/LOG_PATH_IS_UNDEFINED/

yml中：

#spring boot集成mybatis的方式打印sql
logging:
    level:
      com.xxx.mapper: debug # 包路徑為mapper文件包路徑
      org.springframework: warn
      org.apache.ibatis.logging: debug
    file:
      path/name: #加不加這個(gè)配置就看你的resources目錄下是否有l(wèi)ogbackxxxx之類的xml文件，有的話會(huì)自動(dòng)加載這個(gè)，識(shí)別里面的logpath。如果外部的這個(gè)日志配置和xml文件中具有相同的配置的話，哪個(gè)優(yōu)先級(jí)更高一點(diǎn)？

此時(shí)，如果有相應(yīng)的log配置文件，比如叫l(wèi)ogback-spring.xml。

配置文件中部分內(nèi)容如下：

	<!--開發(fā)環(huán)境:打印控制臺(tái)-->
    <springProfile name="dev,prod,test">
        <logger name="com.example.plan" level="info"/>
    </springProfile>

    <root level="info">
        <appender-ref ref="CONSOLE"/>
        <appender-ref ref="INFO_FILE"/>
        <appender-ref ref="WARNING_FILE"/>
        <appender-ref ref="ERROR_FILE"/>
    </root>
    <!-- 其中的springProfile標(biāo)簽指定了name，那么在application.yml文件中要啟用dev,prod,test中的一個(gè)，不然輸出的內(nèi)容為空。logger標(biāo)簽中的name限定了范圍。 -->

相應(yīng)的yml中的logging配置：

logging:
  config: ${spring.config.location}logback-spring.xml # 不加也行，Springboot默認(rèn)的日志配置文件名稱為logback.xml和logback-spring.xml、logbackxxxx.xml
spring:
  profiles:
    active: dev

3、總結(jié)

配置為logback-test.xml后，控制臺(tái)的輸出：

15:50:13,315 |-INFO in ch.qos.logback.classic.LoggerContext[logback] - Found resource [logback-test.xml] at [file:/Users/congee/Desktop/code/GService/service/target/classes/logback-test.xml]
15:50:13,342 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
15:50:13,345 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Will scan for changes in [file:/Users/congee/Desktop/code/GService/service/target/classes/logback-test.xml]
15:50:13,345 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Setting ReconfigureOnChangeTask scanning period to 10 seconds
15:50:13,357 |-INFO in ch.qos.logback.classic.joran.action.ContextNameAction - Setting logger context name as [logback]
15:50:13,357 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
15:50:13,358 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [CONSOLE]
15:50:13,362 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
15:50:13,381 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.rolling.RollingFileAppender]
15:50:13,382 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [INFO_FILE]
15:50:13,382 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
15:50:13,386 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy@1858609436 - No compression will be used
15:50:13,387 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy@1858609436 - Will use the pattern /Users/congee/log/monitor//log-info-%d{yyyy-MM-dd}.%i.log for the active file
15:50:13,388 |-INFO in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@7276c8cd - The date pattern is ‘yyyy-MM-dd’ from file name pattern ‘/Users/congee/log/monitor//log-info-%d{yyyy-MM-dd}.%i.log’.
15:50:13,388 |-INFO in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@7276c8cd - Roll-over at midnight.
15:50:13,389 |-INFO in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@7276c8cd - Setting initial period to Thu Apr 13 15:50:13 CST 2023
15:50:13,389 |-WARN in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@7276c8cd - SizeAndTimeBasedFNATP is deprecated. Use SizeAndTimeBasedRollingPolicy instead
15:50:13,389 |-WARN in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@7276c8cd - For more information see http://logback.qos.ch/manual/appenders.html#SizeAndTimeBasedRollingPolicy
15:50:13,392 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[INFO_FILE] - Active log file name: /Users/congee/log/monitor//log-info-2023-04-13.0.log
15:50:13,392 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[INFO_FILE] - File property is set to [null]
15:50:13,392 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.rolling.RollingFileAppender]
15:50:13,392 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [WARNING_FILE]
15:50:13,392 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
15:50:13,393 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy@1414147750 - No compression will be used
15:50:13,393 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy@1414147750 - Will use the pattern /Users/congee/log/monitor//log-warning-%d{yyyy-MM-dd}.%i.log for the active file
15:50:13,393 |-INFO in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@2e3fc542 - The date pattern is ‘yyyy-MM-dd’ from file name pattern ‘/Users/congee/log/monitor//log-warning-%d{yyyy-MM-dd}.%i.log’.
15:50:13,393 |-INFO in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@2e3fc542 - Roll-over at midnight.
15:50:13,393 |-INFO in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@2e3fc542 - Setting initial period to Thu Apr 13 15:50:13 CST 2023
15:50:13,394 |-WARN in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@2e3fc542 - SizeAndTimeBasedFNATP is deprecated. Use SizeAndTimeBasedRollingPolicy instead
15:50:13,394 |-WARN in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@2e3fc542 - For more information see http://logback.qos.ch/manual/appenders.html#SizeAndTimeBasedRollingPolicy
15:50:13,394 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[WARNING_FILE] - Active log file name: /Users/congee/log/monitor//log-warning-2023-04-13.0.log
15:50:13,394 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[WARNING_FILE] - File property is set to [null]
15:50:13,394 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.rolling.RollingFileAppender]
15:50:13,394 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [ERROR_FILE]
15:50:13,394 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
15:50:13,395 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy@22069592 - No compression will be used
15:50:13,395 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy@22069592 - Will use the pattern /Users/congee/log/monitor//log-error-%d{yyyy-MM-dd}.%i.log for the active file
15:50:13,395 |-INFO in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@4524411f - The date pattern is ‘yyyy-MM-dd’ from file name pattern ‘/Users/congee/log/monitor//log-error-%d{yyyy-MM-dd}.%i.log’.
15:50:13,395 |-INFO in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@4524411f - Roll-over at midnight.
15:50:13,395 |-INFO in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@4524411f - Setting initial period to Thu Apr 13 15:50:13 CST 2023
15:50:13,395 |-WARN in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@4524411f - SizeAndTimeBasedFNATP is deprecated. Use SizeAndTimeBasedRollingPolicy instead
15:50:13,395 |-WARN in ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP@4524411f - For more information see http://logback.qos.ch/manual/appenders.html#SizeAndTimeBasedRollingPolicy
15:50:13,395 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[ERROR_FILE] - Active log file name: /Users/congee/log/monitor//log-error-2023-04-13.0.log
15:50:13,395 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[ERROR_FILE] - File property is set to [null]
15:50:13,396 |-ERROR in ch.qos.logback.core.joran.spi.Interpreter@91:31 - no applicable action for [springProfile], current ElementPath is [[configuration][springProfile]]
15:50:13,396 |-ERROR in ch.qos.logback.core.joran.spi.Interpreter@92:54 - no applicable action for [logger], current ElementPath is [[configuration][springProfile][logger]]
15:50:13,396 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to INFO
15:50:13,396 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [CONSOLE] to Logger[ROOT]
15:50:13,396 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [INFO_FILE] to Logger[ROOT]
15:50:13,396 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [WARNING_FILE] to Logger[ROOT]
15:50:13,396 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [ERROR_FILE] to Logger[ROOT]
15:50:13,396 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
15:50:13,396 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@401e7803 - Registering current configuration as safe fallback point

配置完號(hào)后的緊接著的日志輸出：

2023-04-13 15:50:18.450 [background-preinit] INFO org.hibernate.validator.internal.util.Version - HV000001: Hibernate Validator 6.1.6.Final
2023-04-13 15:50:18.689 [main] INFO c.u.j.c.EnableEncryptablePropertiesBeanFactoryPostProcessor - Post-processing PropertySource instances
2023-04-13 15:50:18.715 [main] INFO c.u.j.EncryptablePropertySourceConverter - Converting PropertySource configurationProperties [org.springframework.boot.context.properties.source.ConfigurationPropertySourcesPropertySource] to AOP Proxy

可以直觀的感受到前面日志的時(shí)間格式的變化。

到此這篇關(guān)于SpringBoot打印系統(tǒng)執(zhí)行的sql語句及日志配置指南的文章就介紹到這了,更多相關(guān)SpringBoot打印系統(tǒng)執(zhí)行sql語句內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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