Java 在WildFly中重新部署ESAPI应用程序时，无法将ClassCastException Log4JLogger转换为Logger

在部署到WildFly.8.2.0.Final的WAR文件中使用ESAPI，我遇到了一个看起来很奇怪的类加载问题。下面是我得到的错误：

09:35:47,383 ERROR [stderr] (default task-12) Caused by: java.lang.reflect.InvocationTargetException
09:35:47,383 ERROR [stderr] (default task-12)   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
09:35:47,383 ERROR [stderr] (default task-12)   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
09:35:47,383 ERROR [stderr] (default task-12)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
09:35:47,383 ERROR [stderr] (default task-12)   at java.lang.reflect.Method.invoke(Method.java:606)
09:35:47,383 ERROR [stderr] (default task-12)   at org.owasp.esapi.util.ObjFactory.make(ObjFactory.java:86)
09:35:47,383 ERROR [stderr] (default task-12)   ... 111 more
09:35:47,383 ERROR [stderr] (default task-12) Caused by: java.lang.ClassCastException: org.owasp.esapi.reference.Log4JLogger cannot be cast to org.owasp.esapi.Logger
09:35:47,383 ERROR [stderr] (default task-12)   at org.owasp.esapi.reference.Log4JLogFactory.getLogger(Log4JLogFactory.java:88)
09:35:47,383 ERROR [stderr] (default task-12)   at org.owasp.esapi.ESAPI.getLogger(ESAPI.java:154)
09:35:47,383 ERROR [stderr] (default task-12)   at org.owasp.esapi.reference.DefaultEncoder.<init>(DefaultEncoder.java:75)
09:35:47,383 ERROR [stderr] (default task-12)   at org.owasp.esapi.reference.DefaultEncoder.getInstance(DefaultEncoder.java:59)
09:35:47,383 ERROR [stderr] (default task-12)   ... 116 more

我的项目是使用maven构建的，我尝试过在没有log4j的情况下使用它，并且通过scope标记包含log4j依赖项。她解决了这个问题。ESAPI库作为可传递依赖项从支持JAR文件加载

我发现了所描述的确切问题，但链上没有解决方案。我已经检查了类加载，似乎没有任何其他log4j实例被加载。现在我的测试台上只有一个应用程序

包括JAR和WAR的pom片段

罐子：

---

经过两天的斗争，我想我终于找到了答案。感谢所有为我们提供建议的人，这些建议最终让我们找到了正确的地方。我100%想为任何可能在将来遇到这个非常奇怪和难以追踪的问题的人发布这个答案

TL；DR是这样的，WildFly只会在应用程序的类路径上找到log4j.properties或log4j.xml时创建一个新的log4j模块。这个过程是在从jboss 4迁移到WildFly的过程中进行的，服务器配置错误，无法找到配置（但是没有报告错误，因为WildFly只使用其在standalone.xml中配置的默认值）

基本上，我们必须确保log4j.xml位于应用程序的类路径上，以便WildFly创建一个新的log4j模块来使用。完成后，ESAPI在应用程序中按预期工作

编辑：进一步的混乱发现了另一个解决方案（适用于那些希望在wildfly中使用日志子系统而不必提供单独的log4j.properties的人）。将以下行添加到日志子系统：

<subsystem xmlns="urn:jboss:domain:logging:2.0">
    <use-deployment-logging-config value="false"/>
    <!-- Logging Configuration Here -->
</subsystem>

---

还将强制类加载正常运行，而无需显式地为log4j提供日志配置文件。

wow，afaik，

Log4jLogger

类确实实现了esapi

Logger

接口。因此，它不应该引发异常。您可以共享您的pom.xml吗？我想试试这个案例。包括相关的pom代码片段。我验证了WAR中只包含一个log4j（当我将scope设置为compile时）。我唯一能想到的是CSRFGuard可能正在加载相同的日志库？您问题中的链接是一个死链接。这是原始链接：（）只是一个想法：如果不部署log4jjar，而是在部署依赖项中添加对module=“org.jboss.Log4J.logmanager”的依赖项，会发生什么？顺便说一句，您可以接受自己的答案！！做得好！！：-）

<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>foo.bar</groupId>
    <artifactId>esapi-utils</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <dependencies>
        <dependency>
            <groupId>org.owasp.esapi</groupId>
            <artifactId>esapi</artifactId>
            <version>2.0.1</version>
        </dependency>
    </dependencies>
</project>

<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>foo.bar</groupId> 
    <artifactId>esapi-webapp</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.1</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.6</version>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <!-- Could this be causing Class-Loading issues? -->
        <dependency>
            <groupId>org.owasp</groupId>
            <artifactId>csrfguard</artifactId>
            <version>3.0.0</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
            <scope>provided</scope>
        </dependency>
        <!-- Other libraries omitted -->
        <dependency>
            <groupId>foo.bar</groupId>
            <artifactId>esapi-utils</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>
</project>

[INFO] foo.bar:esapi-webapp:war:1.0.0-SNAPSHOT
[INFO] +- org.owasp:csrfguard:jar:3.0.0:runtime
[INFO] +- javax.servlet:servlet-api:jar:2.5:provided
[INFO] +- junit:junit:jar:4.12:test
[INFO] |  \- org.hamcrest:hamcrest-core:jar:1.3:test
[INFO] +- org.mockito:mockito-core:jar:1.10.19:test
[INFO] |  \- org.objenesis:objenesis:jar:2.1:test
[INFO] +- org.hamcrest:hamcrest-library:jar:1.3:test
[INFO] +- commons-io:commons-io:jar:1.4:compile
[INFO] +- javax.mail:mail:jar:1.4.3:compile
[INFO] |  \- javax.activation:activation:jar:1.1:compile
[INFO] +- log4j:log4j:jar:1.2.17:provided
[INFO] +- org.apache.velocity:velocity:jar:1.6:compile
[INFO] |  +- commons-collections:commons-collections:jar:3.2.1:compile
[INFO] |  +- commons-lang:commons-lang:jar:2.4:compile
[INFO] |  \- oro:oro:jar:2.0.8:compile
[INFO] +- org.apache.velocity:velocity-tools:jar:2.0:compile
[INFO] |  +- commons-beanutils:commons-beanutils:jar:1.7.0:compile
[INFO] |  +- commons-digester:commons-digester:jar:1.8:compile
[INFO] |  +- commons-chain:commons-chain:jar:1.1:compile
[INFO] |  +- commons-logging:commons-logging:jar:1.1:compile
[INFO] |  +- commons-validator:commons-validator:jar:1.3.1:compile
[INFO] |  +- dom4j:dom4j:jar:1.1:compile
[INFO] |  +- sslext:sslext:jar:1.2-0:compile
[INFO] |  +- org.apache.struts:struts-core:jar:1.3.8:compile
[INFO] |  |  \- antlr:antlr:jar:2.7.2:compile
[INFO] |  +- org.apache.struts:struts-taglib:jar:1.3.8:compile
[INFO] |  \- org.apache.struts:struts-tiles:jar:1.3.8:compile
[INFO] +- org.mybatis:mybatis-spring:jar:1.1.1:compile
[INFO] |  +- org.mybatis:mybatis:jar:3.1.1:compile
[INFO] |  +- org.springframework:spring-tx:jar:3.1.1.RELEASE:compile
[INFO] |  \- org.springframework:spring-jdbc:jar:3.1.1.RELEASE:compile
[INFO] +- org.springframework:spring-context:jar:3.2.13.RELEASE:compile
[INFO] |  +- org.springframework:spring-aop:jar:3.2.13.RELEASE:compile
[INFO] |  +- org.springframework:spring-beans:jar:3.2.13.RELEASE:compile
[INFO] |  +- org.springframework:spring-core:jar:3.2.13.RELEASE:compile
[INFO] |  \- org.springframework:spring-expression:jar:3.2.13.RELEASE:compile
[INFO] +- org.springframework:spring-test:jar:3.2.13.RELEASE:test
[INFO] +- org.springframework:spring-web:jar:3.2.13.RELEASE:compile
[INFO] +- org.springframework:spring-webmvc:jar:3.2.13.RELEASE:compile
[INFO] +- org.springframework:spring-context-support:jar:3.2.13.RELEASE:compile
[INFO] +- org.springframework.security:spring-security-web:jar:3.2.6.RELEASE:compile
[INFO] |  +- aopalliance:aopalliance:jar:1.0:compile
[INFO] |  \- org.springframework.security:spring-security-core:jar:3.2.6.RELEASE:compile
[INFO] +- org.springframework.security:spring-security-config:jar:3.2.6.RELEASE:compile
[INFO] +- foo.bar:esapi-util:jar:1.0-SNAPSHOT:compile
[INFO] |  +- jboss:jboss-common-jdbc-wrapper:jar:3.2.3:compile
[INFO] |  +- commons-codec:commons-codec:jar:1.4:compile
[INFO] |  \- org.owasp.esapi:esapi:jar:2.0.1:compile
[INFO] |     +- commons-configuration:commons-configuration:jar:1.5:compile
[INFO] |     +- commons-beanutils:commons-beanutils-core:jar:1.7.0:compile
[INFO] |     +- commons-fileupload:commons-fileupload:jar:1.2:compile
[INFO] |     +- xom:xom:jar:1.1:compile
[INFO] |     |  +- xerces:xmlParserAPIs:jar:2.6.2:compile
[INFO] |     |  +- xerces:xercesImpl:jar:2.6.2:compile
[INFO] |     |  +- xalan:xalan:jar:2.7.0:compile
[INFO] |     |  \- jaxen:jaxen:jar:1.1-beta-8:compile
[INFO] |     |     \- jdom:jdom:jar:1.0:compile
[INFO] |     +- org.beanshell:bsh-core:jar:2.0b4:compile
[INFO] |     \- org.owasp.antisamy:antisamy:jar:1.4.3:compile
[INFO] |        +- org.apache.xmlgraphics:batik-css:jar:1.7:compile
[INFO] |        +- net.sourceforge.nekohtml:nekohtml:jar:1.9.12:compile
[INFO] |        \- commons-httpclient:commons-httpclient:jar:3.1:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.046 s
[INFO] Finished at: 2015-04-22T12:54:26-04:00
[INFO] Final Memory: 10M/25M
[INFO] ------------------------------------------------------------------------

<subsystem xmlns="urn:jboss:domain:logging:2.0">
    <use-deployment-logging-config value="false"/>
    <!-- Logging Configuration Here -->
</subsystem>