日志打印 log

1.依赖使用（pom.xml）

<!-- 日志打印 -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.16</version><!--版本号自己选一个就行-->
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>2.0.6</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>2.0.6</version>
        </dependency>
        <!-- logback-core -->
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-core</artifactId>
            <version>1.2.3</version>
        </dependency>
        <!-- 引入logback对SLF4J的实现 logback-classic -->
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.2.3</version>
        </dependency>

2.代码中使用

 log.error("MD5 加密失败：[{}]", e);

3.后台日志打印配置（application.properties）


#log4j2输出日志
logging.config=classpath:logback-spring.xml

4.后台日志打印配置（logback-spring.xml）

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="false" scan="true" scanPeriod="1 seconds">
    <springProperty name="springAppName" source="spring.application.name" scope="context"/>

    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>[%d][%t][%p][%c:%L] %m%n</pattern>
        </encoder>
    </appender>

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

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