1. 在application.yml 通过配置配置，按住Ctrl + 左键可以看源码

logging:level:root: infocom.dj.test.controller: debugcom.dj.test.service: debug

2. 自己写接口直接动态修改日志级别，读取application.yml配置文件算是间接修改

package com.dj.springtest.controller;import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.LoggerContext;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;import java.util.Arrays;
import java.util.List;/*** Date: 2024/1/13* Time: 22:02* Description: No Description*/
@RestController
public class LogController {private static final List<String> LEVELS = Arrays.asList("ALL", "all", "TRACE", "trace", "DEBUG", "debug", "INFO", "info", "WARN", "warn", "ERROR", "error", "OFF", "off");/*** 设置日志界级别** @param overall     全局设置* @param part        部分设置* @param packagePath 涵盖包，如果有多个path，请使用英文逗号分隔*/@GetMapping("/log/level")public String setLogLevel(String overall, String part, String packagePath) {LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();if (StringUtils.isNotBlank(overall) && LEVELS.contains(overall)) {Logger rootLogger = loggerContext.getLogger("root");rootLogger.setLevel(Level.toLevel(overall));}//根据包路径进行设置if (StringUtils.isNotBlank(part) && LEVELS.contains(part) && StringUtils.isNotBlank(packagePath)) {String[] paths = packagePath.split(",");for (String path : paths) {Logger pathLogger = loggerContext.getLogger(path);pathLogger.setLevel(Level.toLevel(part));}}return "Succeeded in changing the log level";}}