Log4j的问题与Maven和GWT：org.apache.log4j.XAppender对象是不可

我有一个Maven GWT项目。我包括Hibernate和HSQLDB作为持久层。运行单元测试是好的，但是当它试图运行的服务器组件，日志记录不工作，所以我盲目地在服务器端错误。我encouter的错误是：

[ERROR]的log4j：ERROR A “org.apache.log4j.RollingFileAppender进行” 对象不assig nable于 “org.apache.log4j.Appender” 变量。 [ERROR]的log4j：ERROR类 “org.apache.log4j.Appender” 被加载[ERROR]的log4j：ERROR [sun.misc.Launcher$AppClassLoader@baf1915]而键入[ERROR]的log4j的对象：ERROR“有机apache.log4j.RollingFileAppender”是由[Web应用程序类加载器= 1312837549 @ 4e404fad]加载。 [错误] log4j的：错误无法实例附加器命名为“文件”。 [ERROR]的log4j：ERROR A “org.apache.log4j.ConsoleAppender” 对象不是可分配e的 “org.apache.log4j.Appender” 变量。 [ERROR]的log4j：ERROR类 “org.apache.log4j.Appender” 被加载[ERROR]的log4j：ERROR [sun.misc.Launcher$AppClassLoader@baf1915]而键入[ERROR]的log4j的对象：ERROR“有机apache.log4j.ConsoleAppender”是由[WebAppClas sLoader = 1312837549 @ 4e404fad]加载。 [错误] log4j的：错误无法实例附加器命名为“标准输出”。

从谷歌上搜索我敢肯定这是因为log4j.jar的两个实例都存在。有没有好的办法或最佳实践的方式来解决这个问题？我在运行从控制台发展方式的项目。我的pom.xml看起来是这样的：

 <?xml version="1.0" encoding="UTF-8"?>
<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>testproject</groupId>
 <artifactId>trustme-mdm-gwtp</artifactId>
 <version>1.0-SNAPSHOT</version>
 <packaging>war</packaging>
 <name>GWTP Basic</name>
 <description>Basic GWTP application</description>


 <properties>
 <!-- client -->
 <gwt.version>2.6.0</gwt.version>
 <gwtp.version>1.2.1</gwtp.version>
 <gin.version>2.1.2</gin.version>


 <!-- server -->
 <guice.version>3.0</guice.version>


 <!-- testing -->
 <junit.version>4.7</junit.version>
 <jukito.version>1.4</jukito.version>


 <!-- maven -->
 <gwt-maven-plugin.version>2.6.0</gwt-maven-plugin.version>
 <maven-surefire-plugin.version>2.6</maven-surefire-plugin.version>
 <maven-compiler-plugin.version>2.3.2</maven-compiler-plugin.version>
 <maven-resources-plugin.version>2.5</maven-resources-plugin.version>
 <maven-processor-plugin.version>2.0.5</maven-processor-plugin.version>
 <maven-build-helper-plugin.version>1.7</maven-build-helper-plugin.version>




 <target.jdk>1.7</target.jdk>
 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>


 <webappDirectory>${project.build.directory}/${project.build.finalName}</webappDirectory>
 </properties>


 <build>
 <outputDirectory>${webappDirectory}/WEB-INF/classes</outputDirectory>


 <plugins>
 <!-- JUnit Testing - skip *.GwtTest cases -->
 <!-- 'mvn test' - runs the Jukito tests -->
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-surefire-plugin</artifactId>
 <version>${maven-surefire-plugin.version}</version>
 <configuration>
 <includes>
 <include>**/*Test.java</include>
 </includes>
 <excludes>
 <exclude>**/*GwtTest.java</exclude>
 </excludes>
 </configuration>
 </plugin>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-compiler-plugin</artifactId>
 <version>2.3.2</version>
 <configuration>
 <source>1.7</source>
 <target>1.7</target>
 </configuration>
 </plugin>


 <!-- GWT -->
 <!-- 'mvn gwt:run' - runs development mode -->
 <!-- 'mvn gwt:debug' - runs debug mode -->
 <!-- 'mvn gwt:compile' - compiles gwt -->
 <!-- 'mvn integration-test' - runs the gwt tests (*GwtTest.java) -->
 <plugin>
 <groupId>org.codehaus.mojo</groupId>
 <artifactId>gwt-maven-plugin</artifactId>
 <version>${gwt.version}</version>
 <configuration>
 <!-- With multiple tests use GwtTestSuite.java for speed -->
 <includes>**/*GwtTest.java</includes>
 <extraJvmArgs>-Xss1024K -Xmx1024M -XX:MaxPermSize=256M</extraJvmArgs>


 <copyWebapp>true</copyWebapp>
 <hostedWebapp>${webappDirectory}</hostedWebapp>


 <runTarget>Project.html</runTarget>
 <modules>
 <module>testproject.Project</module>
 </modules>
 </configuration>
 <executions>
 <execution>
 <goals>
 <goal>compile</goal>
 <goal>test</goal>
 </goals>
 </execution>
 </executions>
 </plugin>
 </plugins>
 </build>


 <dependencies>
 <!-- Google Web Toolkit -->
 <dependency>
 <groupId>com.google.gwt</groupId>
 <artifactId>gwt-user</artifactId>
 <version>${gwt.version}</version>
 </dependency>


 <!-- GWT-Platform -->
 <dependency>
 <groupId>com.gwtplatform</groupId>
 <artifactId>gwtp-all</artifactId>
 <version>${gwtp.version}</version>
 </dependency>


 <!-- DI -->
 <dependency>
 <groupId>com.google.inject</groupId>
 <artifactId>guice</artifactId>
 <version>${guice.version}</version>
 </dependency>
 <dependency>
 <groupId>com.google.inject.extensions</groupId>
 <artifactId>guice-servlet</artifactId>
 <version>${guice.version}</version>
 </dependency>
 <dependency>
 <groupId>com.google.inject.extensions</groupId>
 <artifactId>guice-assistedinject</artifactId>
 <version>${guice.version}</version>
 </dependency>
 <dependency>
 <groupId>com.google.gwt.inject</groupId>
 <artifactId>gin</artifactId>
 <version>${gin.version}</version>
 </dependency>


 <!-- Test -->
 <dependency>
 <groupId>junit</groupId>
 <artifactId>junit</artifactId>
 <version>${junit.version}</version>
 <scope>test</scope>
 </dependency>
 <dependency>
 <groupId>org.jukito</groupId>
 <artifactId>jukito</artifactId>
 <version>${jukito.version}</version>
 <scope>test</scope>
 </dependency>
 <!-- Hibernate -->
 <!-- for JPA, use hibernate-entitymanager instead of hibernate-core -->
 <dependency>
 <groupId>org.hibernate</groupId>
 <artifactId>hibernate-entitymanager</artifactId>
 <version>4.3.5.Final</version>
 </dependency>
 <!-- hSQLDB -->
 <dependency>
 <groupId>org.hsqldb</groupId>
 <artifactId>hsqldb</artifactId>
 <version>2.3.2</version>
 </dependency>
 <!-- add slf4j interfaces to classpath -->
 <dependency>
 <groupId>org.slf4j</groupId>
 <artifactId>slf4j-log4j12</artifactId>
 <version>1.7.7</version>
 </dependency>
 <!--  GWT-Log -->
 <dependency>
 <groupId>com.allen-sauer.gwt.log</groupId>
 <artifactId>gwt-log</artifactId>
 <version>3.3.0</version>
 </dependency>

 </dependencies>
</project>

当我看看的\目标... \ lib文件夹，这些都是部署在罐子：

ANTLR-2.7.7.jar aopalliance-1.0.jar commons-collections提供-3.2.1.jar公地郎2.4.jar共享记录-1.1.1.jar的dom4j-1.6.1.jar杜松子酒2.1.2。罐子番石榴16.0.1.jar番石榴GWT-16.0.1.jar吉斯 - 3.0.jar吉斯 - assistedinject-3.0.jar吉斯 - servlet的3.0.jar GWT-杰克逊0.4.0.jar GWT-LOG-3.3 .0.jar gwtp-全1.2.1.jar gwtp的客户端 - 共1.2.1.jar gwtp - 履带1.2.1.jar gwtp分派，共客户1.2.1.jar gwtp-dispatch-共共享1.2.1.jar gwtp分派静止-1.2.1.jar gwtp分派-RPC客户端 - 1.2.1.jar gwtp分派-RPC服务器-1.2.1.jar gwtp-dispatch- RPC-服务器吉斯-1.2.1.jar gwtp分派-RPC服务器 - 弹簧 - 1.2.1.jar gwtp分派-RPC-共享1.2.1.jar gwtp-MVP-客户1.2.1.jar gwtp-MVP-共享1.2.1.jar gwtp处理器-1.2.1.jar gwtp测试器-1.2.1.jar GWT-用户2.6.1.jar hibernate-commons-annotations-4.0.4.Final。罐子冬眠核-4.3.5.Final.jar冬眠-的EntityManager-4.3.5.Final.jar冬眠-JPA-2.1-API-1.0.0.Final.jar HSQLDB-2.3.2.jar杰克逊 - 注解-2.3 .0.jar杰克逊的注解-2.3.0-所以 urces.jar jandex-1.1.0.Final.jar了Javassist-3.18.1-GA.jar javax.inject-1.jar的jboss-测井3.1.3.GA.jar的jboss-记录的注解，1.2.0.Beta1的.jar的jboss-交易api_1.2_spec-1.0.0.Final.jar JSON-20090211.jar jsr305-1.3.9.jar JSR311的API-1.1.1.jar行家伪影3.1.1.jar丛-utils的-3.0.15.jar servlet的API-2.5.jar弹簧AOP-3.2.3.RELEASE.jar弹簧豆-3.2.3.RELEASE.jar弹簧上下文3.2.3.RELEASE.jar弹簧芯 - 3.2.3.RELEASE.jar弹簧表达-3.2.3.RELEASE.jar弹簧网络3.2.3.RELEASE.jar验证-API-1.0.0.GA.jar验证-API 1.0.0.GA- sources.jar速度-1.7.jar XML的API-1.0.b2.jar

我改变了的pom.xml这样：

<!-- Google Web Toolkit -->
<dependency>
    <groupId>com.google.gwt</groupId>
    <artifactId>gwt-servlet</artifactId>
    <version>${gwt.version}</version>
    <scope>runtime</scope>
</dependency>
<dependency>
    <groupId>com.google.gwt</groupId>
    <artifactId>gwt-user</artifactId>
    <version>${gwt.version}</version>
    <scope>provided</scope>
</dependency>

但仍然没有成功...

我插了依赖关系树的屏幕截图。我的信誉不允许粘贴图像。它存储在这里：

Answer 1: