Question

我有一个干净的tomcat7安装，启用了log4j（根据http://tomcat.apache.org/tomcat-7.0-doc/logging.html#Using_Log4j）。 “应用程序级”日志记录确实使用log4j配置（我将日志指向本地syslog服务器）。如何使我的应用程序 access.log 也使用log4j？据我所知，我可以在AccessLogValve，ExtendedAccessLogValve和JDBCAccessLogValve中进行选择，但是更新的它们使我能够登录到syslog，也无法使用log4j。

Answer 1

log4j-scribe-appender项目包含Log4JAccessLogValve，可让您这样做。

Answer 2

如果您使用Tomcat 7，则可以通过覆盖此函数来扩展AccessLogValve：

/**
 * Log the specified message to the log file, switching files if the date
 * has changed since the previous log call.
 *
 * @param message Message to be logged
 */
public void log(String message) {

    rotate();

    /* In case something external rotated the file instead */
    if (checkExists) {
        synchronized (this) {
            if (currentLogFile != null && !currentLogFile.exists()) {
                try {
                    close(false);
                } catch (Throwable e) {
                    ExceptionUtils.handleThrowable(e);
                    log.info(sm.getString("accessLogValve.closeFail"), e);
                }

                /* Make sure date is correct */
                dateStamp = fileDateFormatter.format(
                        new Date(System.currentTimeMillis()));

                open();
            }
        }
    }

    // Log this message
    synchronized(this) {
        if (writer != null) {
            writer.println(message);
            if (!buffered) {
                writer.flush();
            }
        }
    }

}

Answer 3

这适用于JDK日志记录：

package org.apache.plugins;

import java.util.logging.Logger;
import org.apache.catalina.valves.AccessLogValve;

public class AccessLogJdkValve extends AccessLogValve {

    private static Logger jdkLogger = Logger.getLogger(AccessLogJdkValve.class.getName());

    @Override
    public void log(String msg) {
        jdkLogger.info(msg);
    }

    @Override
    protected synchronized void open() {
        // do nothing
    }
}

的pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>tomcat7-conf</groupId>
    <artifactId>tomcat7-conf</artifactId>
    <version>1.0-RELEASE</version>
    <packaging>jar</packaging>

    <dependencies>
        <dependency>
            <groupId>org.apache.tomcat.maven</groupId>
            <artifactId>common-tomcat-maven-plugin</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-catalina</artifactId>
            <version>7.0.12</version>
        </dependency>
    </dependencies>

    <build>
        <sourceDirectory>src</sourceDirectory>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.3</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

只需编译，制作一个jar，在/usr/share/tomcat7/lib/中复制一份，然后修改server.xml。我将它添加到github上的reference tomcat7 configuration。

Tomcat通过log4j访问日志记录？

3 个答案: