有个 maven 项目日志打印的问题请教下 v 友们
資深大佬 : fangcan 9
项目里面使用了 mybatis
- 当项目里面没有设置依赖 logback 和 slf4j 时, mybatis 相关的日志（比如 sql 等）没有打印出来，也没有报错。
- 在 pom 里面设置依赖 logback 和 slf4j 后就能打印出 mybatis 的日志了
疑问点：
- 为什么我自己的 pom 里面不配置日志相关依赖就不打印 mybatis 的日志但是也不报错？
- 依赖包之间日志工具是怎么样的一个关系？不同的依赖包使用不同的日志工具会有怎样的影响？
》表达的不太好，有疑问可以评论下 感谢
附上 dependencies
<dependencies> <dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>4.4.5</version> </dependency> <!-- jsoup Java HTML Parser Java 版的 Html 解析工具 https://jsoup.org/--> <dependency> <groupId>org.jsoup</groupId> <artifactId>jsoup</artifactId> <version>1.11.3</version> </dependency> <!-- Servlet --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> </dependency> <!--spring 相关--> <!-- https://mvnrepository.com/artifact/org.springframework/spring-context --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.3.18.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-core --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>4.3.18.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>4.3.18.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.3.18.RELEASE</version> </dependency> <!--数据库事务管理--> <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>4.3.18.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-tx --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>4.3.18.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.2</version> </dependency> <!--mybatis--> <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.6</version> </dependency> <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.38</version> </dependency> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.4</version> </dependency> <!-- springmvc rest api responseBody 需要使用 转换器使用--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.16.10</version> <scope>provided</scope> </dependency> <!-- log start --> <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api --> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.26</version> </dependency> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-core</artifactId> <version>${logback.version}</version> </dependency> <!-- <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-access</artifactId> <version>${logback.version}</version> </dependency>--> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>${logback.version}</version> </dependency> </dependencies> 大佬有話說 (5)