无法使用log4j启用Spring调试日志记录 [英] Cannot enable spring debug logging using log4j

问题描述

这是我的log4j.xml

This is my log4j.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/"  debug="true">
<appender name="FILE" class="org.apache.log4j.DailyRollingFileAppender">
    <param name="File" value="${catalina.base}/logs/server.log" />
    <param name="Append" value="true" />
    <param name="Threshold" value="INFO" />
    <param name="DatePattern" value="'.'yyyy-MM-dd" />
    <layout class="org.apache.log4j.PatternLayout">
        <param name="ConversionPattern" value="%d{ABSOLUTE}#%X{requestId}#%X{uid}#%X{agentId}#%X{agentName} %-5p [%c{1}] - %m%n" />
    </layout>
</appender>
<logger name="org.springframework" level="DEBUG">
    <appender-ref ref="FILE"/>
</logger>

我正在向控制器发出JSON请求并获得400 Bad request request is syntactically incorrect.我想获得更多有关此的信息.我阅读了有关启用Spring调试的信息，并按照说明进行了操作，但这没有用.我已经检查了我的要求，看来完全没问题.如何在server.log文件中看到有关此信息的更多信息?为什么上述配置不起作用? PS:为清楚起见，我删除了其他记录器和附加器

I am making a JSON request to a controller and getting 400 Bad request request is syntactically incorrect. I want to get some more info on this. I read about enabling spring debugging and followed instructions but it doesn't work. I have checked my request and it seems completely fine. How can I see more information about this in server.log file? Why does the above configuration not work? PS: I have removed the other loggers and appenders for clarity

推荐答案

以下是依赖项:

compile group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.1'
compile group: 'org.apache.logging.log4j', name: 'log4j-api', version: '2.1'

这是log4j2配置:

以下配置适用于Windows计算机.您只能更改linux的日志路径.

Bellow configuration is for windows machine. You can change only the log path for linux.

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="warn" strict="true">
    <Properties>
        <Property name="filename">D:/CommonLogFile/YOUR_LOG_FILE_NAME.log
        </Property>
        <Property name="backupFilePattern">
            D:/CommonLogFile/PROJECT_NAME-%d{yyyy-MM-dd HH_mm}-%i.log
        </Property>
        <Property name="logPatternConsole">
            %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %highlight{%-5level} %logger{35} - %msg%n{INFO=cyan, ERROR=red}
        </Property>
        <Property name="logPatternFile">
            %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{35} - %msg%n
        </Property>
    </Properties>

    <Appenders>
        <Console name="STDOUT" target="SYSTEM_OUT">
            <PatternLayout pattern="${logPatternConsole}"/>
        </Console>

        <RollingFile name="MyRollingFile" fileName="${filename}" filePattern="${backupFilePattern}">
            <PatternLayout pattern="${logPatternFile}"/>
            <Policies>
                <SizeBasedTriggeringPolicy size="10 MB"/>
            </Policies>
            <DefaultRolloverStrategy max="10"/>
        </RollingFile>

    </Appenders>
    <Loggers>
        <Logger name="com.project" level="trace" additivity="false">
            <AppenderRef ref="STDOUT"/>
            <AppenderRef ref="MyRollingFile"/>
        </Logger>
        <Root level="trace">
            <AppenderRef ref="STDOUT"/>
        </Root>
    </Loggers>
</Configuration>

此处包含一些关键提示:

<Property name="filename">D:/CommonLogFile/YOUR_LOG_NAME.log
        </Property>

在这里，filename是日志文件的名称.

Here, filename is the name of the log file.

<Property name="logPatternConsole">
            %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %highlight{%-5level} %logger{35} - %msg%n{INFO=cyan, ERROR=red}
        </Property>

在这里，logPatternConsole具有时间模式.

Here, logPatternConsole has the time pattern.

在Appender部分中，它具有

In Appender section, it has

<Policies>
                <SizeBasedTriggeringPolicy size="10 MB"/>
            </Policies>

此处SizeBasedTriggeringPolicy定义何时创建新的日志文件.在这里， 10MB 之后，它将创建新的logFile

here SizeBasedTriggeringPolicy defins when new log file will created. Here, after 10MB it will create new logFile

以下是日志实现:

static LogWriterUtility logWriterUtility = new LogWriterUtility(YOUR_CLASS_NAME.class);
logWriterUtility.trace(UUID.randomUUID().toString(),"Here is the log message");

检查波纹管是否为LogWriterUtility类:

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class LogWriterUtility {

    Logger log;

    public LogWriterUtility(Class<?> clazz) {
        log = LogManager.getLogger(clazz);
    }

    public void trace(String requestId, String message) {
        log.trace("REQUESTID:" + requestId + ":" + message);
    }

    public void debug(String requestId, String message) {
        log.debug("REQUESTID:" + requestId + ":" + message);
    }

    public void error(String requestId, String message) {
        log.error("REQUESTID:" + requestId + ":" + message);
    }

    public void error(String requestId, Throwable t) {
        log.error("REQUESTID:" + requestId + ":");
        log.error(t);
    }

    public void info(String requestId, String message) {
        log.info("REQUESTID:" + requestId + ":" + message);
    }

    public void error(String requestId, Exception exception) {
        log.warn("REQUESTID:" + requestId + ":" + exception.getStackTrace());
    }
    public void errorWithAnalysis(String requestId, Exception exception) {

        if(exception==null)
            return;
        String message="No Message on error";
        StackTraceElement[] stackTrace = exception.getStackTrace();
        if(stackTrace!=null && stackTrace.length>0) {
            message="";
            for (StackTraceElement e : stackTrace) {
                message += "\n" + e.toString();
            }
        }
        log.error("REQUESTID:" + requestId + ":" +message);


    }
    public void warn(String requestId, String message) {
        log.error(requestId,message);
    }

    public boolean isTraceEnabled() {
        return log.isTraceEnabled();
    }

}

谢谢:)

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