摘要：上一篇，我們講了Spring Boot 整合 log4j實現日誌管理，這一篇接著說一下Spring Boot 整合 log4j2,。

一：還是新建一個java工程：

二：增加log4j2的pom.xml配置，如下：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <groupId>com.micai</groupId>
    <artifactId>micai-springboot-log4j2-9</artifactId>
    <version>1.0-SNAPSHOT</version>
    <modelVersion>4.0.0</modelVersion>

    <packaging>jar</packaging>

    <name>micai-springboot-log4j2-9</name>
    <url>http://maven.apache.org</url>

    <!-- Spring Boot 啟動父依賴 -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.1.RELEASE</version>
    </parent>

    <dependencies>
        <!-- Spring Boot web依賴 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!-- Spring Boot log4j2依賴 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>
    </dependencies>
</project>
 

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN" monitorInterval="30">
    <Properties>
        <Property name="PID">????</Property>
        <Property name="LOG_PATTERN">%clr{%d{yyyy-MM-dd HH:mm:ss.SSS}}{faint} %clr{%5p} %clr{${sys:PID}}{magenta} %clr{---}{faint} %clr{[%15.15t]}{faint} %clr{%-40.40c{1.}}{cyan} %clr{:}{faint} %m%n%xwEx</Property>
    </Properties>
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT" follow="true">
            <PatternLayout pattern="${LOG_PATTERN}"/>
        </Console>
    </Appenders>
    <Loggers>
        <Logger name="org.hibernate.validator.internal.util.Version" level="warn" />
        <Logger name="org.apache.coyote.http11.Http11NioProtocol" level="warn" />
        <Logger name="org.apache.tomcat.util.net.NioSelectorPool" level="warn" />

        <Root level="info">
            <AppenderRef ref="Console"/>
        </Root>
    </Loggers>
</Configuration>
 

package com.micai.springboot.web;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author zhaoxinguo on 2017/8/21.
 */
@RestController //提供實現了REST API，可以服務JSON,XML或者其他。這裡是以String的形式渲染出結果。
public class HelloWorldController {

    private Logger logger = LoggerFactory.getLogger(this.getClass());

    @RequestMapping("/") //提供路由資訊，”/“路徑的HTTP Request都會被對映到sayHello方法進行處理。
    public String sayHello(){
        logger.info("hello world");
        return "Hello,World!";
    }

}