springboot日志【转】【补】

@SuppressWarnings("rawtypes")
public abstract class LogFactory {
    static String UNSUPPORTED_OPERATION_IN_JCL_OVER_SLF4J = "http://www.slf4j.org/codes.html#unsupported_operation_in_jcl_over_slf4j";
    static LogFactory logFactory = new SLF4JLogFactory();

<dependency>
    <groupId>org.springframeworkgroupId>
    <artifactId>spring-coreartifactId>
    <exclusions>
        <exclusion>
            <groupId>commons-logginggroupId>
            <artifactId>commons-loggingartifactId>
        exclusion>
    exclusions>
dependency>

@RunWith(SpringRunner.class)
@SpringBootTest
public class LoggingTest {
    Logger logger = LoggerFactory.getLogger(getClass());
    @Autowired
    ApplicationContext ac;//注入上下文

    @Test
    public void contextLoads() {
        //日志的级别；
        //由低到高   trace//可以调整输出的日志级别；日志就只会在这个级别以以后的高级别生效
        logger.trace("这是trace日志...");
        logger.debug("这是debug日志...");
        //SpringBoot默认给我们使用的是info级别的，没有指定级别的就用SpringBoot默认规定的级别；root级别(用了info级别)
        logger.info("这是info日志...");
        logger.warn("这是warn日志...");
        logger.error("这是error日志...");
    }
    public ApplicationContext getAc() {
        return ac;
    }
    public void setAc(ApplicationContext ac) {
        this.ac = ac;
    }
}

# springboot日志的配置文件,本处由application.properties中的spring.profiles.active=logging来启用本文件
# 指定log文件,也可以写固定的绝对路径, 如果file和path都指定了,那么file优先级更高
#logging.file=springboot02.log
# 指定log路径,默认使用使用spring.log作为文件名, 如果以/开头,则在当前磁盘的根目录下创建路径,如果不以/开头,则在当前应用目录下创建日志路径
logging.path=/springbootlog01/logs

# 日志占位符说明
# %d表示日期时间
# %thread表示线程名
# %-5level：级别从左显示5个字符宽度,左对齐
# %logger{50} 表示logger包路径加类名字最长50个字符
# %msg：日志消息
# %n是换行符

#  在控制台输出的日志的格式
logging.pattern.cOnsole=%d{yyyy-MM-dd} [%thread] %-5level %logger{50} - %msg%n
# 指定文件中日志输出的格式
logging.pattern.file=%d{yyyy-MM-dd} [%thread] %-5level %logger{50} - %msg%n

# 指定com下的所有日志输出级别为trace
logging.level.com=trace

<appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
        
        <layout class="ch.qos.logback.classic.PatternLayout">
            <springProfile name="dev">
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} ----> [%thread] ---> %-5level %logger{50} - %msg%npattern>
            springProfile>
            <springProfile name="!dev">
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} ==== [%thread] ==== %-5level %logger{50} - %msg%npattern>
            springProfile>
        layout>
    appender>

#  在控制台输出的日志的格式
logging.pattern.cOnsole=%d{yyyy-MM-dd HH:mm:ss}\t↓%n%msg%n

2019-12-04 09:59:37    ↓
Root WebApplicationContext: initialization completed in 813 ms
2019-12-04 09:59:38    ↓
Initializing ExecutorService 'applicationTaskExecutor'
2019-12-04 09:59:38    ↓
Tomcat started on port(s): 8080 (http) with context path '/es'
2019-12-04 09:59:38    ↓

org.slf4j.MDC;
MDC.put(TRACE_ID, traceId);
MDC.remove(TRACE_ID);

package com.interceptors.logtag.interceptor;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.UUID;

/**
 * 
日志拦截器
 *
 * @author zetting
 * @date 2018/8/27 11:18
 */
@Component
public class LogInterceptor extends HandlerInterceptorAdapter {
    private Logger log = LoggerFactory.getLogger(this.getClass());
    /**
     * 日志跟踪标识
     */
    private static final String TRACE_ID = "TRACE_ID";

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
        String traceId = UUID.randomUUID().toString();
        if (StringUtils.isEmpty(MDC.get(TRACE_ID))) {
            MDC.put(TRACE_ID, traceId);
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) {
        MDC.remove(TRACE_ID);
    }
}