Question

通过Maven使用Apache Commons EmailValidator时，我遇到了以下不会部署我的应用程序的问题：

Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener
java.lang.LinkageError: loader constraints violated when linking org/xml/sax/EntityResolver class

我在pom.xml上使用了以下代码：

<dependency>
 <groupId>commons-validator</groupId>
 <artifactId>commons-validator</artifactId>
 <version>1.3.1</version>
</dependency>

一个帮助？

Answer 1

commons-validator-1.3.1.jar工件提取xml-apis-1.0.b2.jar，如下所示：

$ mvn dependency:tree
[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'dependency'.
[INFO] ------------------------------------------------------------------------
[INFO] Building Q2714398
[INFO]    task-segment: [dependency:tree]
[INFO] ------------------------------------------------------------------------
[INFO] [dependency:tree {execution: default-cli}]
[INFO] com.stackoverflow:Q2714398:jar:1.0-SNAPSHOT
[INFO] +- commons-validator:commons-validator:jar:1.3.1:compile
[INFO] |  +- commons-beanutils:commons-beanutils:jar:1.7.0:compile
[INFO] |  +- commons-digester:commons-digester:jar:1.6:compile
[INFO] |  |  +- commons-collections:commons-collections:jar:2.1:compile
[INFO] |  |  \- xml-apis:xml-apis:jar:1.0.b2:compile
[INFO] |  \- commons-logging:commons-logging:jar:1.0.4:compile
[INFO] \- junit:junit:jar:3.8.1:test
[INFO] ------------------------------------------------------------------------

LinkageError建议你在JBoss上部署时在类路径上有xml-apis-1.0.b2.jar的重复版本，这在这里是一个显而易见的嫌疑人。

可能只是尝试将其从已部署的应用程序中排除（无法使用当前的详细信息给出更准确的答案）。

<dependency>
  <groupId>commons-validator</groupId>
  <artifactId>commons-validator</artifactId>
  <version>1.3.1</version>
  <exclusions>
    <exclusion>
      <groupId>xml-apis</groupId>
      <artifactId>xml-apis</artifactId>
    </exclusion>
  </exclusions>
</dependency>

Apache Commons EmailValidator和SeamListener异常（不部署）

1 个答案: