mdc 可以配配合模糊匹配查找日志

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cat -n info.log |grep "a415ad50dbf84e99b1b56a31aacd209c"

或者

grep -10 'a415ad50dbf84e99b1b56a31aacd209c' info.log   （10是指上下10行）

pom.xml 依赖

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<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-logging</artifactId>
    </dependency>
    <!--lombok配置-->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.16.10</version>
    </dependency>
</dependencies>

整合logback，打印日志，logback-spring.xml

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<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="false">
    <!--日志存储路径-->
    <property name="log" value="D:/test/log" />
    <!-- 控制台输出 -->
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <!--输出格式化-->
            <pattern>[%X{TRACE_ID}]  %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
        </encoder>
    </appender>
    <!-- 按天生成日志文件 -->
    <appender name="file" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!--日志文件名-->
            <FileNamePattern>${log}/%d{yyyy-MM-dd}.log</FileNamePattern>
            <!--保留天数-->
            <MaxHistory>30</MaxHistory>
        </rollingPolicy>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>[%X{TRACE_ID}]  %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
        </encoder>
        <!--日志文件最大的大小-->
        <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <MaxFileSize>10MB</MaxFileSize>
        </triggeringPolicy>
    </appender>
 
    <!-- 日志输出级别 -->
    <root level="INFO">
        <appender-ref ref="console" />
        <appender-ref ref="file" />
    </root>
</configuration>

application.yml 

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server:
  port: 8080
logging:
  config: classpath:logback-spring.xml

同步线程配置

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import org.slf4j.MDC;
import org.springframework.lang.Nullable;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;
 
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.UUID;
 

public class LogInterceptor implements HandlerInterceptor {
 
    private static final String TRACE_ID = "TRACE_ID";
 
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
        String tid = UUID.randomUUID().toString().replace("-", "");
        //可以考虑让客户端传入链路ID，但需保证一定的复杂度唯一性；如果没使用默认UUID自动生成
        if (!StringUtils.isEmpty(request.getHeader(TRACE_ID))){
            tid=request.getHeader(TRACE_ID);
        }
        MDC.put(TRACE_ID, tid);
        return true;
    }
 
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler,
                                @Nullable Exception ex) {
        MDC.remove(TRACE_ID);
    }
 
}
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import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
@Configuration
public class WebConfigurerAdapter implements WebMvcConfigurer {
    @Bean
    public LogInterceptor logInterceptor() {
        return new LogInterceptor();
    }
 
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(logInterceptor());
        //可以具体制定哪些需要拦截，哪些不拦截，其实也可以使用自定义注解更灵活完成
//                .addPathPatterns("/**")
//                .excludePathPatterns("/testxx.html");
    }
}

异步线程配置

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import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import java.util.concurrent.Executor;
 

@Configuration
@EnableAsync
public class ThreadPoolConfig {
    /**
     * 声明一个线程池
     *
     * @return 执行器
     */
    @Bean("MyExecutor")
    public Executor asyncExecutor() {
        MyThreadPoolTaskExecutor executor = new MyThreadPoolTaskExecutor();
        //核心线程数5：线程池创建时候初始化的线程数
        executor.setCorePoolSize(5);
        //最大线程数5：线程池最大的线程数，只有在缓冲队列满了之后才会申请超过核心线程数的线程
        executor.setMaxPoolSize(5);
        //缓冲队列500：用来缓冲执行任务的队列
        executor.setQueueCapacity(500);
        //允许线程的空闲时间60秒：当超过了核心线程出之外的线程在空闲时间到达之后会被销毁
        executor.setKeepAliveSeconds(60);
        //线程池名的前缀：设置好了之后可以方便我们定位处理任务所在的线程池
        executor.setThreadNamePrefix("asyncJCccc");
        executor.initialize();
        return executor;
    }
}
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import org.slf4j.MDC;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
 
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
 

public final class MyThreadPoolTaskExecutor  extends ThreadPoolTaskExecutor  {
    public MyThreadPoolTaskExecutor() {
        super();
    }
    
    @Override
    public void execute(Runnable task) {
        super.execute(ThreadMdcUtil.wrap(task, MDC.getCopyOfContextMap()));
    }
 
 
    @Override
    public <T> Future<T> submit(Callable<T> task) {
        return super.submit(ThreadMdcUtil.wrap(task, MDC.getCopyOfContextMap()));
    }
 
    @Override
    public Future<?> submit(Runnable task) {
        return super.submit(ThreadMdcUtil.wrap(task, MDC.getCopyOfContextMap()));
    }
}