【摘要】
本文主要介紹Log4j2記錄日誌到MySQL和MongoDB數據庫,用簡單的例子來講解,並解決了一些官方配置可能出現的錯誤。具體內容可參見官方文檔:http://logging.apache.org/log4j/2.x/manual/appenders.html左側導航欄的Appenders->JDBC和Appenders->NoSQL兩項
【引用】
Log4j2的基本配置我在前面的文章已經介紹,具體可參見:http://blog.csdn.net/ererfei/article/details/46831807
1. Log4j2記錄日誌到MySQL
1.1. 首先創建存儲日誌的數據表ibs_log
創建語句如下:
DROP TABLE IF EXISTS `ibs_log`;
CREATE TABLE `ibs_log` (
`log_id` int(10) NOT NULL AUTO_INCREMENT,
`log_date` datetime NOT NULL COMMENT '日期',
`log_file` varchar(255) DEFAULT NULL COMMENT '文件名',
`log_line` varchar(255) DEFAULT NULL COMMENT '行號',
`log_thread`varchar(255) DEFAULT NULL COMMENT '線程',
`log_level` varchar(255) DEFAULT NULL COMMENT 'Log級別 info warndebug error等',
`log_message` varchar(2048) DEFAULT NULL COMMENT 'Log信息',
PRIMARY KEY (`log_id`,`log_date`),
KEY`INDEX_LOG_DATE` (`log_date`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
1.2. 創建Log4j2.xml配置文件
需要創建數據表、數據行的對應關係
<?xml version="1.0"encoding="UTF-8"?>
<!-- 不打印log4j內部日誌,配置文件刷新頻率爲30秒 -->
<Configuration status="off"monitorInterval="30">
<Appenders>
<JDBCname="log_database" tableName="ibs_log">
<ConnectionFactory class="com.*.*.ConnectionFactory"method="getDatabaseConnection" />
<Column name="log_date" isEventTimestamp="true"/>
<Column name="log_file" pattern="%file" />
<Column name="log_line" pattern="%line" />
<Column name="log_thread" pattern="%thread" />
<Column name="log_level" pattern="%level" />
<Column name="log_message" pattern="%message"/>
</JDBC>
</Appenders>
<Loggers>
<!-- 打印等級:off、fatal、error、warn、info、debug、trace、all -->
<Logger name="項目包名(com.*.*)" level="debug">
<appender-ref ref="databaseAppender"/>
</Logger>
<Root level="off"></Root>
</Loggers>
</Configuration>
1.3. 創建數據庫連接類ConnectionFactory
需要修改下面代碼中用戶名、密碼、數據庫名稱爲你使用的數據庫對用的用戶名密碼以及名稱:
【ConnectionFactory.java】
package com.centerm.util;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;
import javax.sql.DataSource;
importorg.apache.commons.dbcp.DriverManagerConnectionFactory;
importorg.apache.commons.dbcp.PoolableConnection;
import org.apache.commons.dbcp.PoolableConnectionFactory;
importorg.apache.commons.dbcp.PoolingDataSource;
importorg.apache.commons.pool.impl.GenericObjectPool;
public class ConnectionFactory {
privatestatic interface Singleton {
final ConnectionFactory INSTANCE = new ConnectionFactory();
}
private final DataSource dataSource;
private ConnectionFactory() {
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
System.exit(0);
}
Properties properties = new Properties();
properties.setProperty("user", "用戶名");
properties.setProperty("password", "密碼"); //or get properties from some configuration file
GenericObjectPool<PoolableConnection>pool = new GenericObjectPool<PoolableConnection>();
DriverManagerConnectionFactory connectionFactory = newDriverManagerConnectionFactory(
"jdbc:mysql://localhost:3306/數據庫名稱",properties
);
new PoolableConnectionFactory(
connectionFactory, pool, null,"SELECT 1", 3, false, false, Connection.TRANSACTION_READ_COMMITTED
);
this.dataSource = new PoolingDataSource(pool);
}
public static Connection getDatabaseConnection() throws SQLException {
return Singleton.INSTANCE.dataSource.getConnection();
}
}
至此就可以運行項目測試了
1.4. 特別注意
由於項目啓動時Log4j2是最先加載的內容,所以有可能出現ConnectionFactory這個類啓動報錯,所以需要在官網提供實例的基礎上添加代碼(上面類中已經添加):
2. Log4j2記錄日誌到MongoDB
安裝運行MongoDB:http://www.runoob.com/mongodb/mongodb-window-install.html
MongoDB驅動下載:http://central.maven.org/maven2/org/mongodb/mongo-java-driver/
Java MongoDB API學習:http://blog.csdn.net/ererfei/article/details/50857103
2.1. 創建數據庫
運行MongoDB客戶端mongo-cli.exe,使用命令”usetest”創建數據庫test,創建該數據庫的用戶[root:password],不需要手動創建collection。
2.2. 創建Log4j2.xml配置文件
<?xml version="1.0"encoding="UTF-8"?>
<!--不打印log4j內部日誌,配置文件刷新頻率爲30秒 -->
<Configuration status="off"monitorInterval="30">
<Appenders>
<NoSql name="databaseAppender">
<MongoDb databaseName="test"collectionName="logData" server="127.0.0.1"port="27017" userName="root"password="password"/>
</NoSql>
</Appenders>
<Loggers>
<!-- 打印等級:off、fatal、error、warn、info、debug、trace、all -->
<Logger name="com.*.*"level="debug">
<appender-ref ref="databaseAppender"/>
</Logger>
<Root level="off"></Root>
</Loggers>
</Configuration>
!!!至此就可以運行項目測試了