Java 无法部署项目

我有一个数据库连接，我通过一个正确配置的侦听器类配置了它 在DD中

    <web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">

   <listener>
        <listener-class>contpack.startL</listener-class>
    </listener>
    <context-param>
        <param-name>username</param-name>
        <param-value>root</param-value>
    </context-param>
    <context-param>
        <param-name>password</param-name>
        <param-value>root</param-value>
    </context-param>
    <context-param>
        <param-name>url</param-name>
        <param-value>jdbc:mysql://localhost:3306/mysql</param-value>
    </context-param>

    <servlet>
        <servlet-name>hell</servlet-name>
        <servlet-class>com.contpack.Dbc</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>hell</servlet-name>
        <url-pattern>/Dbc</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>home.html</welcome-file>
    </welcome-file-list>
</web-app>

服务器日志的堆栈跟踪为：

    [2014-08-01T20:53:59.112+0530] [glassfish 4.0] [SEVERE] [] [javax.enterprise.system.core] 
    [tid: _ThreadID=34 _ThreadName=admin-listener(3)]
    [timeMillis: 1406906639112] [levelValue: 1000]
    [[Exception while loading the app : java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: java.lang.IllegalArgumentException: java.lang.ClassNotFoundException: contpack.startL.java]]

如果我删除了Listener标签，则应用程序运行正常

...
<listener>
    <listener-class>contpack.startL</listener-class>
</listener>
...

这意味着您的侦听器完全限定名为

com.contpack.startL

因此，设置正确的侦听器类将有所帮助。您的web.xml应该如下所示

...
<listener>
    <listener-class>com.contpack.startL</listener-class>
</listener>
...

。。。
com.contpack.start
...

---

不过，遵循java命名约定始终是一个好主意

发布web.xml和侦听器类no imageplease@M.Sharma你能帮我吗…试着为你的侦听器遵循java命名约定吗class@Nik6019您好，对不起，我看不到您的信息。顺便说一句，jjd很好地回答了您的包裹名称

com.contpack

因此将

contpack.start

更改为com.contpack.start

com.contpack.startL

...
<listener>
    <listener-class>com.contpack.startL</listener-class>
</listener>
...