<dependency>

            <groupId>org.slf4j</groupId>

            <artifactId>slf4j-api</artifactId>

            <version>1.7.25</version>

        </dependency>

        <dependency>

            <groupId>ch.qos.logback</groupId>

            <artifactId>logback-classic</artifactId>

            <version>1.2.3</version>

        </dependency>
        

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

<configuration>

    <!-- %m输出的信息,%p日志级别,%t线程名,%d日期,%c类的全名,,,, -->

    <!--ConsoleAppender，顾名思义是要打印到控制台-->

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">

        <encoder>

            <pattern>%d %p (%file:%line\)- %m%n</pattern>   <!--pattern 配置控制台日志的格式-->

            <charset>UTF-8</charset>   <!--日志的编码格式，UTF-8和我的IDE编码格式一致，不会出现乱码-->

        </encoder>

    </appender>

    <!--RollingFileAppender,顾名思义，是要输出到文件的-->

    <appender name="baselog"

              class="ch.qos.logback.core.rolling.RollingFileAppender">

        <File>c:/log/base.log</File><!--千万注意！这里要用绝对路径，我测试了相对路径失败了-->

        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

            <fileNamePattern>d:/log/base.log.%d.%i</fileNamePattern>

            <timeBasedFileNamingAndTriggeringPolicy  class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">

                <!-- or whenever the file size reaches 64 MB -->

                <maxFileSize>64 MB</maxFileSize>

            </timeBasedFileNamingAndTriggeringPolicy>

        </rollingPolicy>

        <encoder>

            <pattern>

                %d %p (%file:%line\)- %m%n

            </pattern>

            <charset>UTF-8</charset> <!-- 此处设置字符集 -->

        </encoder>

    </appender>

    <!--日志输出级别，info级别输出到控制台-->

    <root level="info">

        <appender-ref ref="STDOUT" />

    </root>

    <!--日志输出级别，info级别输出文件-->

 <logger name="com.yzf" level="info"> <appender-ref ref="baselog" /> </logger></configuration>

package com.yzf.controller;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestParam;

@Controller

public class HelloController {

    private Logger log = LoggerFactory.getLogger(HelloController.class);

        /*

         *   http://localhost:8080/hello?name=cn.7player

         */

        @RequestMapping("/hello")

        public String greeting(@RequestParam(value="name", required=false, defaultValue="World") String name, Model model) {

            log.info("hello {}","11111111");

            model.addAttribute("name", name);

            return "hello";

        }

}