SpringBoot（八）：SpringBoot整合Log4j

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SpringBoot默认使用日志框架logback

一、依赖

<!-- spring boot start -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
        <exclusions>
            <!-- 排除自带的logback依赖 -->
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <!-- springboot-log4j -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-log4j</artifactId>
        <version>1.3.8.RELEASE</version>
    </dependency>           

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二、Log4j配置文件

# Log4j配置
log4j.rootCategory=INFO,stdout

# 控制台输出
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %p %c{}:%L - %m%n           

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三、使用Log4j

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

/**
 * @author zh
 * @ClassName cn.aduu.web.HelloController
 * @Description
 */
@RestController
public class HelloController{

    private static final Logger logger = LoggerFactory.getLogger(HelloController.class);

    @RequestMapping("hello")
    public String hello() throws JsonProcessingException {
        logger.info("hello world");
        return "hello world";
    }
}           

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四、部分日志打印效果

-- ::,  INFO SimpleUrlHandlerMapping: - Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
-- ::,  INFO OptionalLiveReloadServer: - LiveReload server is running on port 35729
-- ::,  INFO AnnotationMBeanExporter: - Registering beans for JMX exposure on startup
-- ::,  INFO AnnotationMBeanExporter: - Bean with name 'druidDataSource' has been autodetected for JMX exposure
-- ::,  INFO AnnotationMBeanExporter: - Located MBean 'druidDataSource': registering with JMX server as MBean [com.alibaba.druid.pool:name=druidDataSource,type=DruidDataSource]
-- ::,  INFO TomcatEmbeddedServletContainer: - Tomcat started on port(s): 8088 (http)
-- ::,  INFO MainApplication: - Started MainApplication in  seconds (JVM running for )
-- ::,  INFO DispatcherServlet: - FrameworkServlet 'dispatcherServlet': initialization started
-- ::,  INFO DispatcherServlet: - FrameworkServlet 'dispatcherServlet': initialization completed in  ms
-- ::,  INFO HelloController: - hello world           

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