JDBC 连接的 log4j2 + slf4j 配置

Question

我是 log4j 的新手，我很难入门。我决定在我的项目中使用 log4j2，并开始将 Apache Shiro 的日志记录实现从 JCL 替换为 log4j2。

我设法让它在控制台上完美运行，但在 JDBC 上却不行。数据库连接工作正常，但只插入空值。文字值有效，但模式无效。

pom.xml

<!-- Logging API + implementation: -->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.12</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-slf4j-impl</artifactId>
        <version>2.3</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api</artifactId>
        <version>2.3</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>2.3</version>
    </dependency>

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="TRACE" monitorInterval="30">
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
        </Console>
        <JDBC name="databaseAppender" tableName="LOG">
            <ConnectionFactory class="my.logging.LogConnectionFactory"
                method="getDatabaseConnection" />
            <!-- <Column name="id" literal="LOGGING.APPLICATION_LOG_SEQUENCE.NEXTVAL" /> -->
            <Column name="DT_CRET" isEventTimestamp="true" />
            <Column name="VL_HEADER" pattern="%c" />
            <Column name="VL_LEVEL" pattern="%l" />
            <Column name="VL_MSG" pattern="%m" />
            <Column name="NM_USER" literal="'cosme'" />
            <!-- <Column name="NM_USER" pattern="%X{username}" />-->
        </JDBC>
    </Appenders>
    <Loggers>
        <Root level="INFO">
            <AppenderRef ref="Console" level="INFO" />
            <AppenderRef ref="databaseAppender" level="INFO" />
        </Root>
    </Loggers>
</Configuration>

LogConnectionFactory.java

package my.logging;

import java.sql.Connection;
import java.sql.SQLException;

import javax.sql.DataSource;

import org.apache.commons.dbcp2.ConnectionFactory;
import org.apache.commons.dbcp2.DriverManagerConnectionFactory;
import org.apache.commons.dbcp2.PoolableConnection;
import org.apache.commons.dbcp2.PoolableConnectionFactory;
import org.apache.commons.dbcp2.PoolingDataSource;
import org.apache.commons.pool2.ObjectPool;
import org.apache.commons.pool2.impl.GenericObjectPool;

import my.config.ConfigurationManager;


public class LogConnectionFactory {

    private static interface Singleton {
        final LogConnectionFactory INSTANCE = new LogConnectionFactory();
    }

    private final DataSource dataSource;

    private LogConnectionFactory() {
        try {
            Class.forName(ConfigurationManager.getValue("mtdt_db.connectionDriver")).newInstance();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        this.dataSource = setupDataSource(ConfigurationManager.getValue("mtdt_db.connectionString"));
    }

    public static Connection getDatabaseConnection() throws SQLException {
        return Singleton.INSTANCE.dataSource.getConnection();
    }

    public static DataSource setupDataSource(String connectURI) {
        //
        // First, we'll create a ConnectionFactory that the
        // pool will use to create Connections.
        // We'll use the DriverManagerConnectionFactory,
        // using the connect string passed in the command line
        // arguments.
        //
        ConnectionFactory connectionFactory = new DriverManagerConnectionFactory(connectURI,null);

        //
        // Next we'll create the PoolableConnectionFactory, which wraps
        // the "real" Connections created by the ConnectionFactory with
        // the classes that implement the pooling functionality.
        //
        PoolableConnectionFactory poolableConnectionFactory = new PoolableConnectionFactory(connectionFactory, null);

        //
        // Now we'll need a ObjectPool that serves as the
        // actual pool of connections.
        //
        // We'll use a GenericObjectPool instance, although
        // any ObjectPool implementation will suffice.
        //
        ObjectPool<PoolableConnection> connectionPool = new GenericObjectPool<>(poolableConnectionFactory);

        // Set the factory's pool property to the owning pool
        poolableConnectionFactory.setPool(connectionPool);

        //
        // Finally, we create the PoolingDriver itself,
        // passing in the object pool we created.
        //
        PoolingDataSource<PoolableConnection> dataSource = new PoolingDataSource<>(connectionPool);

        return dataSource;
    }
}

数据库输出：

控制台输出（似乎正确）：

Answer 1

我通过在列上使用 isUnicode="false" 使其工作...

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="TRACE" monitorInterval="30">
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
        </Console>
        <JDBC name="databaseAppender" tableName="LOG">
            <ConnectionFactory class="pt.mapidea.logging.LogConnectionFactory"
                method="getDatabaseConnection" />
            <!-- <Column name="id" literal="LOGGING.APPLICATION_LOG_SEQUENCE.NEXTVAL" /> -->
            <Column name="DT_CRET" isEventTimestamp="true" />
            <Column name="VL_HEADER" pattern="%c" isUnicode="false" />
            <Column name="VL_LEVEL" pattern="%l" isUnicode="false" />
            <Column name="VL_MSG" pattern="%m" isUnicode="false" />
            <Column name="NM_USER" literal="'cosme'" />
            <!-- <Column name="NM_USER" pattern="%X{username}" />-->
        </JDBC>
    </Appenders>
    <Loggers>
        <Root level="INFO">
            <AppenderRef ref="Console" level="INFO" />
            <AppenderRef ref="databaseAppender" level="INFO" />
        </Root>
    </Loggers>
</Configuration>

JDBC 连接的 log4j2 + slf4j 配置

log4j2 + slf4j configuration for JDBC connection

java

jdbc

slf4j

log4j2