Spring Boot QuickStart 10: Log Usage

First Step: Pom file

<?xml version= "1.0" encoding= "UTF-8"? ><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" > <modelversion>4.0.0 </modelVersion> <groupId>com.payease</groupId> <artifactId>sell</artifactId> <ve Rsion>0.0.1-snapshot</version> <packaging>jar</packaging> <name>sell</name> < Description>demo Project for Spring boot</description> <parent> <groupId>org.springframework.boot</groupId> &        Lt;artifactid>spring-boot-starter-parent</artifactid> <version>1.5.8.RELEASE</version> <relativePath/> <!--lookup parent from repository to </parent> <properties> <pro Ject.build.sourceencoding>utf-8</project.build.sourceencoding> <project.reporting.outputencoding >UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties&    Gt            <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</ar            Tifactid><scope>test</scope> </dependency> <!--===================== MySQL driver ================== ======-<dependency> <groupId>mysql</groupId> <artifactid>mysql -connector-java</artifactid> </dependency> <!--===================== JPA =================== =====-<dependency> <groupId>org.springframework.boot</groupId> <a Rtifactid>spring-boot-starter-data-jpa</artifactid> </dependency> <!--=================== = = @Getter @Setter @Slf4j @Data ========================-<dependency> &LT;GROUPID&GT;ORG.PR ojectlombok</groupid> <artifactId>lombok</artifactId> </dependency> </depe ndencies> <build> <plugins> <plugin> <groupid>org.springfra mework.boot</groupid&Gt <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </b Uild></project>

Step Two: Your test class

 Packagecom.payease;Importlombok.extern.slf4j.Slf4j;Importorg.junit.Test;ImportOrg.junit.runner.RunWith;Importorg.springframework.boot.test.context.SpringBootTest;ImportOrg.springframework.test.context.junit4.SpringRunner;/*** Created by liuxiaoming on 2017/11/8.*/@RunWith (Springrunner.class) @SpringBootTest @slf4j//@Data Public classLoggertest {//private final Logger Logger = Loggerfactory.getlogger (loggertest.class);@Test Public voidtest1 () {//logger.debug ("Debug ..."); //logger.info ("info ..."); //logger.error ("error ..."); //examples of the use of print variables in logsString name= "Liuxiaoming"; String Password= "123456"; Log.debug ("Debug ...");//@Slf4jLog.info ("info ..." + "Name:" + name + ", Password:" + password);//@Slf4jLog.error ("Error ..." + "name:{}, password:{}", Name,password);//@Slf4j    }}

Step three: Configuration in the configuration file Application.yml file

 spring:datasource:driver -class - Span style= "COLOR: #000000" >name:com.mysql.jdbc.driver username:root password:  1234 Url:jdbc:mysql:  // 127.0.0.1/sell? Characterencoding=utf-8&usessl=false   jpa:show -sql: true  server:context -path:/ selllogging:pattern:console:  "%d-%msg%n" #日志格式 date-/users/liuxiaoming/documents/ideawork/sell_log #日志路径 Default name spring.log file: /users/liuxiaoming/documents/ideawork/sell_log/sell.log #日志文件 +  path level: #日志级别 com.payease.LoggerTest:debug #日志级别指定某个类 can also step up the class directly at level: after configuring  pre> 

How to configure the second log:

Step one: Comment on the configuration of logs in Application.yml

Step Two: Create a new logback-spring.xml log configuration file

<?XML version= "1.0" encoding= "UTF-8"?><Configuration>    <!--display of the console -    <Appendername= "ConsoleLog"class= "Ch.qos.logback.core.ConsoleAppender">        <Layoutclass= "Ch.qos.logback.classic.PatternLayout">            <pattern>%d-%msg%n</pattern>        </Layout>    </Appender>    <!--log file: Fileinfolog -    <Appendername= "Fileinfolog"class= "Ch.qos.logback.core.rolling.RollingFileAppender">        <!--Filter by Range -        <Filterclass= "Ch.qos.logback.classic.filter.LevelFilter">            < Level>ERROR</ Level>            <Onmatch>DENY</Onmatch>  <!--prohibited -            <Onmismatch>ACCEPT</Onmismatch>  <!--Accept -        </Filter>        <!--scrolling -        <Encoder>            <pattern>%msg%n</pattern>        </Encoder>        <!--scrolling Policy -        <Rollingpolicyclass= "Ch.qos.logback.core.rolling.TimeBasedRollingPolicy">            <!--Path -            <Filenamepattern>/users/liuxiaoming/documents/ideawork/sell_log/info.%d.log</Filenamepattern>        </Rollingpolicy>    </Appender>    <!--log file: Fileerrorlog -    <Appendername= "Fileerrorlog"class= "Ch.qos.logback.core.rolling.RollingFileAppender">        <!--Filter by Range -        <Filterclass= "Ch.qos.logback.classic.filter.ThresholdFilter">            < Level>ERROR</ Level>        </Filter>        <Encoder>            <pattern>%msg%n</pattern>        </Encoder>        <!--scrolling Policy -        <Rollingpolicyclass= "Ch.qos.logback.core.rolling.TimeBasedRollingPolicy">            <!--Path -            <Filenamepattern>/users/liuxiaoming/documents/ideawork/sell_log/error.%d.log</Filenamepattern>        </Rollingpolicy>    </Appender>    <!--Log Level -    <Root Level= "Info">        <Appender-refref= "ConsoleLog" />        <Appender-refref= "Fileinfolog" />        <Appender-refref= "Fileerrorlog" />    </Root></Configuration>

Step three: Start a project view generates two configuration files

Spring Boot QuickStart 10: Log Usage