springboot 集成 log 日志(系统日志，sql日志，异常日志)

雨点打透心脏的1/2处 2022-03-15 11:06 626阅读 0赞

# [springboot技术栈][springboot] #

### log配置详解 ###

springboot集成了log开发包,pom.xml引入 spring-boot-starter 或包含spring-boot-starter的包spring-boot-starter-\*\*如 spring-boot-starter-web

<dependency>
    	<groupId>org.springframework.boot</groupId>
    	<artifactId>spring-boot-starter</artifactId>
    </dependency>

1.  application.yml 里增加日志配置

logging:
        config: classpath:log/logback.xml

classpath 指resources目录, 千万不要写/log/logback.xml ,那样会找不到配置文件

1.  新建logback.xml 路径和application配置里一致

<configuration>
        
        
        
        <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
            <encoder>
                <pattern>%d %p (%file:%line\)- %m%n</pattern>
                <charset>UTF-8</charset>
            </encoder>
        </appender>
    
        
        
        
        
        <appender name="fileLog"
                  class="ch.qos.logback.core.rolling.RollingFileAppender">
            <File>log/file/fileLog.log</File>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                <fileNamePattern>log/file/fileLog.log.%d.%i</fileNamePattern>
                <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                    
                    <maxFileSize>64 MB</maxFileSize>
                </timeBasedFileNamingAndTriggeringPolicy>
            </rollingPolicy>
            <encoder>
                <pattern>
                    %d %p (%file:%line\)- %m%n
                </pattern>
                <charset>UTF-8</charset>
                
            </encoder>
        </appender>
    
        
        <appender name="sqlFile"
                  class="ch.qos.logback.core.rolling.RollingFileAppender">
            <File>log/sql/sqlFile.log</File>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                <fileNamePattern>log/sql/sqlFile.log.%d.%i</fileNamePattern>
                <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                    
                    <maxFileSize>64 MB</maxFileSize>
                </timeBasedFileNamingAndTriggeringPolicy>
            </rollingPolicy>
            
            <encoder>
                
                <pattern>
                    %d %p (%file:%line\)- %m%n
                </pattern>
                <charset>UTF-8</charset>
                
            </encoder>
        </appender>
    
    
        
        <appender name="errorFile"
                  class="ch.qos.logback.core.rolling.RollingFileAppender">
            <File>log/error/errorFile.log</File>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                <fileNamePattern>log/error/errorFile.%d.log.%i</fileNamePattern>
                <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                    
                    <maxFileSize>64 MB</maxFileSize>
                </timeBasedFileNamingAndTriggeringPolicy>
            </rollingPolicy>
            
            <encoder>
                
                <pattern>
                    %d %p (%file:%line\)- %m%n
                </pattern>
                <charset>UTF-8</charset>
                
            </encoder>
            
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                <level>ERROR</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
        </appender>
        
        
        
        <root level="INFO">
            <appender-ref ref="fileLog" />
            <appender-ref ref="console" />
            <appender-ref ref="errorFile" />
        </root>
    
        
        <logger name="com.dolphin.mapper" level="DEBUG" additivity="false">
            <appender-ref ref="console" />
            <appender-ref ref="sqlFile" />
        </logger>
    </configuration>

项目启动时将会在项目跟目录常见log文件夹及log文件

### 日志级别 ###

ALL: 最低等级的，用于打开所有日志记录。 
    DEBUG :详细的显示信息
    INFO :一般显示信息
        WARN :一般警告
        ERROR:严重错误
        FATAL：崩溃，整个程序终止运行
    OFF: 最高级，关闭所有日志

1.  新建测试controller LogController.java

package com.dolphin.controller;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    /**
     * 开发公司：青岛海豚数据技术有限公司
     * 版权：青岛海豚数据技术有限公司
     * <p>
     * LogController
     *
     * @author 刘志强
     * @created Create Time: 2019/2/16
     */
    @Controller
    @RequestMapping("/log")
    public class LogController {
    
        @GetMapping("error")
        @ResponseBody
        public String error() throws Exception{
            int[] i = {1,2,3,4};
            int j = i[5];
            return "测试系统错误日志";
        }
    }

只测试异常日志，和系统日志,sql日志请先集成mybatis。

##### 集成参考： [springboot 集成 mybatis,mysql,Druid(数据库连接池), mybatis-generator(MBG自动生成)][springboot _ mybatis_mysql_Druid_ mybatis-generator_MBG] #####

## 浏览器访问 [http://localhost:6533/log/error][http_localhost_6533_log_error] 观察日志文件 ##

[springboot]: https://github.com/2425358736/dolphin/blob/master/README.md
[springboot _ mybatis_mysql_Druid_ mybatis-generator_MBG]: https://github.com/2425358736/dolphin/blob/master/src/main/resources/mybatis/springboot%20%E9%9B%86%E6%88%90%20mybatis%2Cmysql%2CDruid%28%E6%95%B0%E6%8D%AE%E5%BA%93%E8%BF%9E%E6%8E%A5%E6%B1%A0%29%2C%20mybatis-generator%28MBG%E8%87%AA%E5%8A%A8%E7%94%9F%E6%88%90%29.md
[http_localhost_6533_log_error]: http://localhost:6533/log/error