SpringBoot Logback日志记录到数据库的实现方法
作者:拉提娜的爸爸
这篇文章主要介绍了SpringBoot Logback日志记录到数据库的实现方法,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧
对于日志的处理,有时候需要把符合条件的日志计入数据库中
一、添加pom依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- 这个依赖必须存在,否则会报java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSource--> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.4</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency>
二、创建logback配置文件
<?xml version="1.0" encoding="UTF-8"?> <configuration debug="false"> <!--定义日志文件的存储地址 勿在 LogBack 的配置中使用相对路径--> <property name="LOG_HOME" value="/home/admin" /> <!-- 控制台输出 --> <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender"> <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder"> <!--格式化输出:%d表示日期,%thread表示线程名,%-5level:级别从左显示5个字符宽度%msg:日志消息,%n是换行符--> <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern> </encoder> </appender> <!-- 按照每天生成日志文件 --> <appender name="application_file" class="ch.qos.logback.core.rolling.RollingFileAppender"> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <!--日志文件输出的文件名--> <FileNamePattern>${LOG_HOME}/info/info.log.%d{yyyy-MM-dd}.log</FileNamePattern> <!--日志文件保留天数--> <MaxHistory>30</MaxHistory> </rollingPolicy> <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder"> <!--格式化输出:%d表示日期,%thread表示线程名,%-5level:级别从左显示5个字符宽度%msg:日志消息,%n是换行符--> <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern> </encoder> <!--日志文件最大的大小--> <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy"> <MaxFileSize>500MB</MaxFileSize> </triggeringPolicy> </appender> <!-- 异常日志文件 --> <appender name="error_file" class="ch.qos.logback.core.rolling.RollingFileAppender"> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <!--日志文件输出的文件名--> <FileNamePattern>${LOG_HOME}/error/error.log.%d{yyyy-MM-dd}.log</FileNamePattern> <!--日志文件保留天数--> <MaxHistory>30</MaxHistory> </rollingPolicy> <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder"> <!--格式化输出:%d表示日期,%thread表示线程名,%-5level:级别从左显示5个字符宽度%msg:日志消息,%n是换行符--> <pattern>%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>500MB</MaxFileSize> </triggeringPolicy> <!-- 只打印错误日志 --> <filter class="ch.qos.logback.classic.filter.LevelFilter"> <level>error</level> <onMatch>ACCEPT</onMatch> <onMismatch>DENY</onMismatch> </filter> </appender> <!--连接数据库配置--> <appender name="db_classic_mysql_pool" class="ch.qos.logback.classic.db.DBAppender"> <connectionSource class="ch.qos.logback.core.db.DataSourceConnectionSource"> <dataSource class="org.apache.commons.dbcp.BasicDataSource"> <driverClassName>com.mysql.cj.jdbc.Driver</driverClassName> <url>jdbc:mysql://127.0.0.1:3306/logdb?serverTimezone=Asia/Shanghai</url> <username>root</username> <password>123456</password> </dataSource> </connectionSource> </appender> <!--myibatis log configure--> <logger name="com.apache.ibatis" level="TRACE"/> <logger name="java.sql.Connection" level="DEBUG" /> <logger name="java.sql.Statement" level="DEBUG"/> <logger name="java.sql.PreparedStatement" level="DEBUG"/> <!-- 日志输出级别 --> <root level="INFO"> <appender-ref ref="stdout" /> <appender-ref ref="application_file" /> <appender-ref ref="error_file"/> <appender-ref ref="db_classic_mysql_pool" /> </root> </configuration>
三、创建数据库表
在ch.qos.logback.classic.db包下可以找到对应数据库的表创建语句
我用的mysql数据库,前提是要首先自己创建库
mysql的数据库sql语句:
BEGIN; DROP TABLE IF EXISTS logging_event_property; DROP TABLE IF EXISTS logging_event_exception; DROP TABLE IF EXISTS logging_event; COMMIT; BEGIN; CREATE TABLE logging_event ( timestmp BIGINT NOT NULL, formatted_message TEXT NOT NULL, logger_name VARCHAR(254) NOT NULL, level_string VARCHAR(254) NOT NULL, thread_name VARCHAR(254), reference_flag SMALLINT, arg0 VARCHAR(254), arg1 VARCHAR(254), arg2 VARCHAR(254), arg3 VARCHAR(254), caller_filename VARCHAR(254) NOT NULL, caller_class VARCHAR(254) NOT NULL, caller_method VARCHAR(254) NOT NULL, caller_line CHAR(4) NOT NULL, event_id BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY ); COMMIT; BEGIN; CREATE TABLE logging_event_property ( event_id BIGINT NOT NULL, mapped_key VARCHAR(254) NOT NULL, mapped_value TEXT, PRIMARY KEY(event_id, mapped_key), FOREIGN KEY (event_id) REFERENCES logging_event(event_id) ); COMMIT; BEGIN; CREATE TABLE logging_event_exception ( event_id BIGINT NOT NULL, i SMALLINT NOT NULL, trace_line VARCHAR(254) NOT NULL, PRIMARY KEY(event_id, i), FOREIGN KEY (event_id) REFERENCES logging_event(event_id) ); COMMIT;
创建好的表
四、测试
1、编写测试代码
@RunWith(SpringRunner.class) @SpringBootTest public class Springboot02MybatisApplicationTests { private final Logger logger = LoggerFactory.getLogger(Springboot02MybatisApplicationTests.class); @Test public void contextLoads() { logger.info("数据库日志info"); logger.error("数据库日志error"); } }
2、运行结果
默认存储所有符合当前级别的日志记录
五、自定义数据库表字段和存储内容
当然,默认的表字段那么多,存储了很多内容,但是我们很多时候只是自己打印的日志内容,为了节省磁盘空间,这个时候可以自定义存储字段和存储内容
步骤:
1、创建数据库表
DROP TABLE IF EXISTS `logging`; CREATE TABLE `logging` ( `id` BIGINT(20) NOT NULL AUTO_INCREMENT, `message` VARCHAR(300) NOT NULL COMMENT '内容', `level_string` VARCHAR(254) NOT NULL COMMENT '级别', `created_time` DATETIME NOT NULL COMMENT '时间', `logger_name` VARCHAR(300) NOT NULL COMMENT '全类名', PRIMARY KEY (`id`) ) ENGINE=INNODB DEFAULT CHARSET=utf8 COMMENT='自定义日志记录表'
2、重写DBAppender类为LogDBAppender类
package com.me.study.springboot02mybatis.config; import ch.qos.logback.classic.spi.CallerData; import ch.qos.logback.classic.spi.ILoggingEvent; import ch.qos.logback.core.db.DBAppenderBase; import org.springframework.context.annotation.Configuration; import java.lang.reflect.Method; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.SQLException; import java.sql.Timestamp; @Configuration public class LogDBAppender extends DBAppenderBase<ILoggingEvent> { protected static final Method GET_GENERATED_KEYS_METHOD; //插入sql protected String insertSQL; // message 日志内容 static final int MESSAGE = 1; // level_string static final int LEVEL_STRING = 2; // created_time 时间 static final int CREATE_TIME = 3; // logger_name 全类名 static final int LOGGER_NAME = 4; static final StackTraceElement EMPTY_CALLER_DATA = CallerData.naInstance(); static { // PreparedStatement.getGeneratedKeys() method was added in JDK 1.4 Method getGeneratedKeysMethod; try { // the getGeneratedKeysMethod = PreparedStatement.class.getMethod("getGeneratedKeys", (Class[]) null); } catch (Exception ex) { getGeneratedKeysMethod = null; } GET_GENERATED_KEYS_METHOD = getGeneratedKeysMethod; } @Override public void start() { // 将写好的sql语句赋值给insertSQL insertSQL = buildInsertSQL(); super.start(); } // 自己写新增sql语句 private static String buildInsertSQL() { return "INSERT INTO `logging`(`message`,`level_string`,`created_time`,`logger_name`)" + "VALUES (?,?,?,?)"; } @Override protected Method getGeneratedKeysMethod() { return GET_GENERATED_KEYS_METHOD; } @Override protected String getInsertSQL() { return insertSQL; } /** * 主要修改的方法 * * @param stmt * @param event * @throws SQLException */ private void bindLoggingEventWithInsertStatement(PreparedStatement stmt, ILoggingEvent event) throws SQLException { // event.getFormattedMessage() 日志打印内容 String message = event.getFormattedMessage(); // 如果只想存储自己打印的日志,可以这样写日志:logger.info("- XXXX") if(message.startsWith("-")){ // 判断日志消息首字母为 - 的日志,记录到数据库表 stmt.setString(MESSAGE, message); // event.getLevel().toString() 日志级别 stmt.setString(LEVEL_STRING, event.getLevel().toString()); // new Timestamp(event.getTimeStamp()) 时间 stmt.setTimestamp(CREATE_TIME, new Timestamp(event.getTimeStamp())); // event.getLoggerName() 全类名 stmt.setString(LOGGER_NAME, event.getLoggerName()); } } @Override protected void subAppend(ILoggingEvent eventObject, Connection connection, PreparedStatement statement) throws Throwable { bindLoggingEventWithInsertStatement(statement, eventObject); // This is expensive... should we do it every time? int updateCount = statement.executeUpdate(); if (updateCount != 1) { addWarn("Failed to insert loggingEvent"); } } @Override protected void secondarySubAppend(ILoggingEvent eventObject, Connection connection, long eventId) throws Throwable { } }
3、修改logback日志文件,引用自定义的LogDBAppender类
<!--连接数据库配置--> <appender name="db_classic_mysql_pool" class="com.me.study.springboot02mybatis.config.LogDBAppender"> <connectionSource class="ch.qos.logback.core.db.DataSourceConnectionSource"> <dataSource class="org.apache.commons.dbcp.BasicDataSource"> <driverClassName>com.mysql.cj.jdbc.Driver</driverClassName> <url>jdbc:mysql://127.0.0.1:3306/logdb?serverTimezone=Asia/Shanghai</url> <username>root</username> <password>admin</password> </dataSource> </connectionSource> </appender>
4、测试运行
1)编写测试代码
@Test public void contextLoads() { logger.info("- 数据库日志info"); logger.error("- 数据库日志error"); logger.info("一条不带‘-'的日志,看会不会记录如数据库"); }
2)运行结果
数据库存储结果只存储了自定义的日志记录
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。