Question

我正在尝试使用我的Java EE应用程序中的log4j进行日志记录，方法是在应用程序中定义log4j.xml。

我正在尝试使用

访问它

   DOMConfigurator.configure( "src/log4j.xml");
   logger.warn( "Login Process has started a warning message" );

但它不断抛出以下错误

**编辑错误消息

log4j:ERROR Could not parse file [src/log4j.xml].
 java.io.FileNotFoundException: D:\src\log4j.xml (The system cannot find the path s     pecified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:120)
at java.io.FileInputStream.<init>(FileInputStream.java:79)
at sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:70)
at sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:161)
at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
at org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:208)
at org.apache.log4j.xml.DOMConfigurator$1.parse(DOMConfigurator.java:749)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:866)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:755)

当我提供绝对路径时，一切正常。

那么实现这个目标的方式是什么？我正在使用1.246.jar版本的log4j

每次构建应用程序时都会收到警告

log4j:WARN No appenders could be found for logger     (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

编辑：应用程序结构

Myapp
  src
  conf
  target

我已经在文件夹src

下找到了log4j.xml

log4j.xml文件

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

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="console" class="org.apache.log4j.ConsoleAppender">
    <param name="Target" value="System.out" />
    <layout class="org.apache.log4j.PatternLayout">
        <param name="ConversionPattern" value="%-5p %c{1} - %m%n" />
    </layout>
</appender>
   <appender name="Log" class="org.apache.log4j.FileAppender">
    <param name="File" value="Web.log" />
    <param name="Append" value="true" />
    <layout class="org.apache.log4j.PatternLayout">
        <param name="ConversionPattern" value="%d{DATE} %-5p %-15c{1}: %m%n" />
    </layout>
</appender>

<logger name="com.web" additivity="false">
    <level value="info" />
    <appender-ref ref="Log" />
</logger>

</log4j:configuration>

由于

Answer 1

像这样配置web.xml文件。

   <!-- these are at the top of the xml configuration file -->
    <context-param>
        <param-name>log4jConfigLocation</param-name>
        <param-value>WEB-INF/conf/log4j.xml</param-value>
    </context-param>

    <context-param>
        <param-name>webAppRootKey</param-name>
        <param-value>api.root</param-value>
    </context-param> 

    <listener>
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
    </listener>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- ... -->

这可能会对您有所帮助：http://forum.springsource.org/showthread.php?30800-SpringMVC-XML-Log4j-Logging-not-functioning

Answer 2

最好把它放在src/main/resources文件夹中。

您还可以将其重命名为log4j.properties，具体取决于您的文件格式你应该有log4j.jar，或者你正在使用maven添加依赖项到pom.xml文件。

Answer 3

尝试更改

DOMConfigurator.configure( "src/log4j.xml");

要

DOMConfigurator.configure( "/src/log4j.xml");

在Java EE应用程序中找不到Log4j.xml throw文件

3 个答案: