Logback如何自定义日志存储

1、配置lockback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

	<property name="LOG_HOME" value="/wzwsq-log" />
	<property name="APP_NAME" value="wzwsq" />

	<!-- 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} %X{address} %-5level %logger{50} - %msg%n</pattern>
		</encoder>
	</appender>

	<!-- 按照每天生成日志文件 -->
	<appender name="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>${LOG_HOME}/${APP_NAME}.log.%d{yyyy-MM-dd}.log</FileNamePattern>
			<!--日志文件保留天数 -->
			<MaxHistory>10</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} %X{address} %-5level %logger{50} - %msg%n</pattern>
			<!--<pattern>%-4relative [%thread] %-5level %logger{35} - %msg%n</pattern> -->
		</encoder>
	</appender>
	<!--连接数据库配置 class:日志保存操作类 -->
	<appender name="db_classic_mysql_pool" class="wzwsq.config.LogDBAppender">
		<connectionSource class="ch.qos.logback.core.db.DataSourceConnectionSource">
			<dataSource class="org.apache.commons.dbcp.BasicDataSource">
				<driverClassName>com.mysql.jdbc.Driver</driverClassName>
				<url>jdbc:mysql://localhost:3306/wzwsq?serverTimezone=GMT%2B8&amp;useSSL=false&amp;characterEncoding=utf8</url>
				<username>root</username>
				<password>123456</password>
			</dataSource>
		</connectionSource>
	</appender>
 
	<!-- 日志输出级别 -->
	<root level="info">
		<appender-ref ref="STDOUT" />
		<appender-ref ref="FILE" />
        <!--添加自定义操作配置-->
		<appender-ref ref="db_classic_mysql_pool" />
	</root>

</configuration>

2、配置自定义日志操作类

import ch.qos.logback.classic.spi.CallerData;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.core.db.DBAppenderBase;
import com.alibaba.fastjson.JSONObject;
import wzwsq.model.IpInfo;     //自定义IP对象
import wzwsq.model.UsersModel; //自定义用户对象
import wzwsq.util.Constant;    //自定义常量对象
import wzwsq.util.WebUtils;    //自定义Web工具对象
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;

/**
 * @ClassName LogDBAppender
 * @Description: 自定义日志保存至数据库
 * @Author wzwsq
 * @Date 2020/12/10
 * @Version V1.0
 **/
@Configuration
public class LogDBAppender extends DBAppenderBase<ILoggingEvent> {
    protected static final Method GET_GENERATED_KEYS_METHOD;
    //插入sql
    protected String insertSQL;

    //自定义存储字段
    /**
     * menu_type:操作类型,指的是菜单ID
     * record_id:相关操作对象的ID
     * operation_content:操作内容,自定义编辑
     * add_id:操作人ID
     * add_time:操作时间
     * ip:根据IP对应城市
     * city:ip所属城市
     * ua:浏览器信息
     * */
    static final int MENU_TYPE = 1;
    static final int RECORD_ID = 2;
    static final int OPERATION_CONTENT = 3;
    static final int ADD_ID = 4;
    static final int ADD_TIME = 5;
    static final int IP = 6;
    static final int CITY = 7;
    static final int UA = 8;


    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 `operation_log`" +
                "(" +
                "`menu_type`,`record_id`," +
                "`operation_content`,`add_id`," +
                "`add_time`,`ip`," +
                "`city`,`ua`" +
                ")" +
                "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("'MENU_TYPE': '{}','RECORD_ID': '{}','OPERATION_CONTENT': '{}'",XXX,XXX,XXX)
        //判断当前日志信息是否属于自定义类型
        int MENU_TYPE_FLAG=message.indexOf("MENU_TYPE");
        int RECORD_ID_FLAG=message.indexOf("RECORD_ID");
        int OPERATION_CONTENT_FLAG=message.indexOf("OPERATION_CONTENT");
        if(MENU_TYPE_FLAG>0&&RECORD_ID_FLAG>0&&OPERATION_CONTENT_FLAG>0){
            //截取用户自定义的日志信息
            JSONObject jsonObject =JSONObject.parseObject(message);
            String menuType=jsonObject.get("MENU_TYPE").toString();
            String recordId=jsonObject.get("RECORD_ID").toString();
            String operationContent=jsonObject.get("OPERATION_CONTENT").toString();
            //获取当前使用系统的用户对象、IP、CITY、UA
            UsersModel usersModel=WebUtils.getUser();//用户登录对象
            IpInfo ipInfo=(IpInfo)WebUtils.getSession().getAttribute(Constant.IP_INFO);//用户登录IP信息
            String ip=ipInfo.getIp();
            String city=ipInfo.getCity();
            String ua=ipInfo.getUa();

            stmt.setString(MENU_TYPE, menuType);
            stmt.setString(RECORD_ID, recordId);
            stmt.setString(OPERATION_CONTENT, operationContent);
            stmt.setString(ADD_ID,usersModel.getId().toString());
            stmt.setTimestamp(ADD_TIME, new Timestamp(event.getTimeStamp()));
            stmt.setString(IP, ip);
            stmt.setString(CITY,city==null?"":city.toString());
            stmt.setString(UA, ua==null?"":ua.toString());
        }
    }

    @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、调用方法

private static Logger logger = LoggerFactory.getLogger(UsersController.class);
logger.info("'MENU_TYPE': '{}','RECORD_ID': '{}','OPERATION_CONTENT': '{}'",XXX,XXX,XXX);

注意事项:在logback.xml中appender标签一定的写在root标签之前

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