springboot引入log4j2

1、导入依赖包

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>

2、yml配置文件

Configuration:
  status: warn

  Properties: # 定义全局变量
    Property: # 缺省配置（用于开发环境）。其他环境需要在VM参数中指定，如下：
    - name: log.path
      value: G:/log/logs
    - name: project.name
      value: project_name

  Appenders:
    Console: #输出到控制台
      name: CONSOLE
      target: SYSTEM_OUT
      PatternLayout:
        pattern: "%highlight{%d{yyyy-MM-dd HH:mm:ss,SSS}:%4p %t %l - %m%n}{STYLE=Logback}"
    RollingFile:
    - name: ROLLING_FILE
      ignoreExceptions: false
      fileName: ${log.path}/${project.name}.log
      filePattern: "${log.path}/$${date:yyyy-MM}/${project.name}-%d{yyyy-MM-dd}-%i.log.gz"
      PatternLayout:
        pattern: "%d{yyyy-MM-dd HH:mm:ss,SSS}:%4p %t (%F:%L) - %m%n"
      Policies:
        SizeBasedTriggeringPolicy:
           size: "128 MB"
      DefaultRolloverStrategy:
         max: 1000

  Loggers:
    Root:
      level: info
      AppenderRef:
        - ref: CONSOLE
        - ref: ROLLING_FILE
    Logger:
      - name: com.xxx #给自己项目配置特定的日志级别和appender
        additivity: false
        level: debug
        AppenderRef:
          - ref: CONSOLE
          - ref: ROLLING_FILE

3、springboot默认使用logback来输出日志，只做以上配置，log4j是不会起作用的，控制台会输出以下错误提示

maven中加入一下配置，解决日志冲突

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter</artifactId>
    <!-- 解决logback 日志冲突 -->
    <exclusions>
        <exclusion>                        
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-logging</artifactId>
        </exclusion>
    </exclusions>
</dependency>

4、测试

@PostMapping(value = "login")
@ResponseBody
public Result login(@Valid Users users){
    logger.debug("进入登录接口...");
    Subject subject = SecurityUtils.getSubject();
    AuthenticationToken token = new UsernamePasswordToken(users.getUsername(),users.getPassword());
    subject.login(token);
    return Result.buildBaseSuccess();
}

5、配置切面，为每个接口添加通用日志

@Aspect
@Component
@Order(1)
public class WebLogAspect {
    private Logger logger = LoggerFactory.getLogger(this.getClass());
    private ThreadLocal<Long> startTime = new ThreadLocal<>();  

    @Pointcut(value = "execution(public * com.*.controller.*.*(..))")
    public void webLog() {
    }

    @Before(value = "webLog()")
    public void dobefore(JoinPoint joinPoint) {        //注入连接点
        startTime.set(System.currentTimeMillis());
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();

        logger.info("请求URL:" + request.getRequestURL().toString());         // 想那个url发的请求
        logger.info("请求METHOD:" + request.getMethod());
        logger.info("请求方法:" + joinPoint.getSignature().getDeclaringTypeName() + "."
                + joinPoint.getSignature().getName());                     // 请求的是哪个类，哪种方法
        logger.info("请求方法参数:" + JSONObject.toJSONString(joinPoint.getArgs()));     // 方法本传了哪些参数
        logger.info("请求request参数:" + JSONObject.toJSONString(joinPoint.getArgs()));     // 方法本传了哪些参数
    }
    
    //方法的返回值注入给ret
    @AfterReturning(returning = "ret", pointcut = "webLog()")
    public void doafter(Object ret) {
        logger.info("返回结果:" + JSONObject.toJSONString(ret));       // 响应的内容---方法的返回值responseEntity
        logger.info("用时:" + ( System.currentTimeMillis()-startTime.get() ));
    }
}

6、效果

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