无法确定 servlet：java.lang.NullPointerException 在 org.jboss.as.web.deployment.JBossContextConfig.beforeLoadOnStartup
Failed to determine servlet: java.lang.NullPointerException at org.jboss.as.web.deployment.JBossContextConfig.beforeLoadOnStartup
我正在将 WebSphere 应用程序迁移到 JBoss EAP 6.4。在部署期间，我收到以下错误：
Failed to determine servlet: java.lang.NullPointerException
使用此堆栈跟踪：
12:48:06,194 DEBUG [org.jboss.as.security] (MSC service thread 1-2) Qualified url patterns: {/=PatternInfo[pattern=/,type=3,isOverridden=false,qualifiers=[]]}
12:48:06,194 FINE [javax.enterprise.resource.webcontainer.jsf.config] (ServerService Thread Pool -- 132) ConfigureListener.contextInitialized(/scWeb)
12:48:06,224 DEBUG [org.jboss.as.web.security] (ServerService Thread Pool -- 96) Failed to determine servlet: java.lang.NullPointerException
at org.jboss.as.web.deployment.JBossContextConfig.beforeLoadOnStartup(JBossContextConfig.java:666) [jboss-as-web-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:178) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
at org.jboss.as.web.deployment.JBossContextConfig.lifecycleEvent(JBossContextConfig.java:260) [jboss-as-web-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:115) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3592) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
at org.apache.catalina.core.StandardContext.start(StandardContext.java:3802) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
at org.jboss.as.web.deployment.WebDeploymentService.doStart(WebDeploymentService.java:163) [jboss-as-web-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at org.jboss.as.web.deployment.WebDeploymentService.access[=12=]0(WebDeploymentService.java:61) [jboss-as-web-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at org.jboss.as.web.deployment.WebDeploymentService.run(WebDeploymentService.java:96) [jboss-as-web-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [rt.jar:1.8.0_45]
at java.util.concurrent.FutureTask.run(Unknown Source) [rt.jar:1.8.0_45]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [rt.jar:1.8.0_45]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.8.0_45]
at java.lang.Thread.run(Unknown Source) [rt.jar:1.8.0_45]
at org.jboss.threads.JBossThread.run(JBossThread.java:122)
12:48:43,934 DEBUG [org.jboss.ejb.client.txn] (Periodic Recovery) Send recover request for transaction origin node identifier 1 to EJB receiver with node name inbaghpc00516
12:52:40,593 ERROR [org.jboss.as.controller.management-operation] (HttpManagementService-threads - 1) JBAS013412: Timeout after [300] seconds waiting for service container stability. Operation will roll back. Step that first updated the service container was 'deploy' at address '[("deployment" => "PCB-5.3.ear")]'
这是怎么引起的，我该如何解决？
这是我对 scweb 的配置...
web.xml.....
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_1234567890" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Shortcode Management Web</display-name>
<distributable />
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext-*.xml</param-value>
</context-param>
<filter>
<filter-name>authenticationFilter</filter-name>
<filter-class>
com.singtel.pcb.scweb.filter.AuthenticationFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>authenticationFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>
org.apache.struts.action.ActionServlet
</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>
/WEB-INF/struts-config.xml
</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>2</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>2</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<!-- Struts Action Servlet Mapping -->
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!--
<resource-ref id="ResourceRef_12345678909">
<res-ref-name>jdbc/pcbDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
-->
<error-page>
<error-code>404</error-code>
<location>/404.html</location>
</error-page>
</web-app>
struts-config.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">
<struts-config>
<!-- Form Beans -->
<form-beans>
<form-bean name="LoginForm" type="com.singtel.pcb.scweb.forms.LoginActionFormBean" />
<!--many like this-->
</form-beans>
<global-forwards>
<!-- Default forward to "Welcome" action -->
<!-- Demonstrates using index.jsp to forward -->
<forward name="failure" path="/Error.jsp" />
<forward name="response" path="/Response.jsp" />
<forward name="Error" path="/Error.jsp" />
</global-forwards>
<action-mappings>
<action
name="LoginForm"
attribute="LoginForm"
type="com.singtel.pcb.scweb.action.LoginAction"
path="/pages/login"
input="/pages/login.jsp"
scope="request"
validate="true">
<forward name="ShortcodeHome" path="/pages/lumlum.jsp" />
<forward name="NumberLevelHome" path="/pages/sumnum.jsp" />
<forward name="Failure" path="/pages/login.jsp" />
</action>
<!--many like this-->
</action-mappings>
<controller locale="false" maxFileSize="500K" nocache="true" processorClass="org.springframework.web.struts.DelegatingRequestProcessor" />
<message-resources parameter="com.singtel.pcb.scweb.resource.ApplicationResources"/>
<plug-in
className="org.springframework.web.struts.ContextLoaderPlugIn">
<set-property property="contextConfigLocation"
value="/WEB-INF/actions-*.xml" />
</plug-in>
<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
<set-property property="pathnames"
value="/WEB-INF/validator-rules.xml,/WEB-INF/validation.xml" />
</plug-in>
</struts-config>
applicationContext-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN"
"http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<beans>
<bean id="userRoleService" class="com.singtel.pcb.sam.dto.UserRoleService">
<property name="dataSource" ref="dataSource"></property>
</bean>
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>
classpath:com/singtel/pcb/scweb/resource/scweb.properties
</value>
</list>
</property>
</bean>
<bean id="dataSource"
class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName">
<value>${database.connection.datasource}</value>
</property>
</bean>
</beans>
Failed to determine servlet: 如果 web.xml.
的环境设置正确，问题就不会出现
在给定场景 datasource 中，未提供 Web 容器 (.war) 所需的 Web 存档。这意味着它由 unawareness 评论，因为 intialContext.lookup() 失败，它是从过滤器 类 调用的，过滤器 类 基本上配置为 Filter (AuthFilter.java) 在 web.xml
所以取消注释以下行解决了问题，可以启动网络生命周期，所以Failed to determine servlet问题解决了....
<resource-ref id="ResourceRef_12345678909">
<res-ref-name>jdbc/pcbDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
除了查找此错误之外，它还可能会引发我们在此处针对 web container
讨论的相同错误
Caused by: java.sql.SQLException: ORA-28001: the password has expired
说明您设置的数据库密码已过期。去重设密码。就我而言，它是甲骨文。我的 JBoss 服务器配置中明确提到了密码，- stanalone.xml。所以我已经登录并在 SQL Plus Command Line Utility 中重置它。
执行此操作时还要确保删除 JBoss tmp foler 缓存数据，因为 Web 容器已被缓存并且密码作为状态存储在容器中的某处。
我正在将 WebSphere 应用程序迁移到 JBoss EAP 6.4。在部署期间，我收到以下错误：
Failed to determine servlet: java.lang.NullPointerException
使用此堆栈跟踪：
12:48:06,194 DEBUG [org.jboss.as.security] (MSC service thread 1-2) Qualified url patterns: {/=PatternInfo[pattern=/,type=3,isOverridden=false,qualifiers=[]]}
12:48:06,194 FINE [javax.enterprise.resource.webcontainer.jsf.config] (ServerService Thread Pool -- 132) ConfigureListener.contextInitialized(/scWeb)
12:48:06,224 DEBUG [org.jboss.as.web.security] (ServerService Thread Pool -- 96) Failed to determine servlet: java.lang.NullPointerException
at org.jboss.as.web.deployment.JBossContextConfig.beforeLoadOnStartup(JBossContextConfig.java:666) [jboss-as-web-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:178) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
at org.jboss.as.web.deployment.JBossContextConfig.lifecycleEvent(JBossContextConfig.java:260) [jboss-as-web-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:115) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3592) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
at org.apache.catalina.core.StandardContext.start(StandardContext.java:3802) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
at org.jboss.as.web.deployment.WebDeploymentService.doStart(WebDeploymentService.java:163) [jboss-as-web-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at org.jboss.as.web.deployment.WebDeploymentService.access[=12=]0(WebDeploymentService.java:61) [jboss-as-web-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at org.jboss.as.web.deployment.WebDeploymentService.run(WebDeploymentService.java:96) [jboss-as-web-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [rt.jar:1.8.0_45]
at java.util.concurrent.FutureTask.run(Unknown Source) [rt.jar:1.8.0_45]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [rt.jar:1.8.0_45]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.8.0_45]
at java.lang.Thread.run(Unknown Source) [rt.jar:1.8.0_45]
at org.jboss.threads.JBossThread.run(JBossThread.java:122)
12:48:43,934 DEBUG [org.jboss.ejb.client.txn] (Periodic Recovery) Send recover request for transaction origin node identifier 1 to EJB receiver with node name inbaghpc00516
12:52:40,593 ERROR [org.jboss.as.controller.management-operation] (HttpManagementService-threads - 1) JBAS013412: Timeout after [300] seconds waiting for service container stability. Operation will roll back. Step that first updated the service container was 'deploy' at address '[("deployment" => "PCB-5.3.ear")]'
这是怎么引起的，我该如何解决？
这是我对 scweb 的配置...
web.xml.....
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_1234567890" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Shortcode Management Web</display-name>
<distributable />
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext-*.xml</param-value>
</context-param>
<filter>
<filter-name>authenticationFilter</filter-name>
<filter-class>
com.singtel.pcb.scweb.filter.AuthenticationFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>authenticationFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>
org.apache.struts.action.ActionServlet
</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>
/WEB-INF/struts-config.xml
</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>2</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>2</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<!-- Struts Action Servlet Mapping -->
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!--
<resource-ref id="ResourceRef_12345678909">
<res-ref-name>jdbc/pcbDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
-->
<error-page>
<error-code>404</error-code>
<location>/404.html</location>
</error-page>
</web-app>
struts-config.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">
<struts-config>
<!-- Form Beans -->
<form-beans>
<form-bean name="LoginForm" type="com.singtel.pcb.scweb.forms.LoginActionFormBean" />
<!--many like this-->
</form-beans>
<global-forwards>
<!-- Default forward to "Welcome" action -->
<!-- Demonstrates using index.jsp to forward -->
<forward name="failure" path="/Error.jsp" />
<forward name="response" path="/Response.jsp" />
<forward name="Error" path="/Error.jsp" />
</global-forwards>
<action-mappings>
<action
name="LoginForm"
attribute="LoginForm"
type="com.singtel.pcb.scweb.action.LoginAction"
path="/pages/login"
input="/pages/login.jsp"
scope="request"
validate="true">
<forward name="ShortcodeHome" path="/pages/lumlum.jsp" />
<forward name="NumberLevelHome" path="/pages/sumnum.jsp" />
<forward name="Failure" path="/pages/login.jsp" />
</action>
<!--many like this-->
</action-mappings>
<controller locale="false" maxFileSize="500K" nocache="true" processorClass="org.springframework.web.struts.DelegatingRequestProcessor" />
<message-resources parameter="com.singtel.pcb.scweb.resource.ApplicationResources"/>
<plug-in
className="org.springframework.web.struts.ContextLoaderPlugIn">
<set-property property="contextConfigLocation"
value="/WEB-INF/actions-*.xml" />
</plug-in>
<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
<set-property property="pathnames"
value="/WEB-INF/validator-rules.xml,/WEB-INF/validation.xml" />
</plug-in>
</struts-config>
applicationContext-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN"
"http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<beans>
<bean id="userRoleService" class="com.singtel.pcb.sam.dto.UserRoleService">
<property name="dataSource" ref="dataSource"></property>
</bean>
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>
classpath:com/singtel/pcb/scweb/resource/scweb.properties
</value>
</list>
</property>
</bean>
<bean id="dataSource"
class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName">
<value>${database.connection.datasource}</value>
</property>
</bean>
</beans>
Failed to determine servlet: 如果 web.xml.
在给定场景 datasource 中，未提供 Web 容器 (.war) 所需的 Web 存档。这意味着它由 unawareness 评论，因为 intialContext.lookup() 失败，它是从过滤器 类 调用的，过滤器 类 基本上配置为 Filter (AuthFilter.java) 在 web.xml
所以取消注释以下行解决了问题，可以启动网络生命周期，所以Failed to determine servlet问题解决了....
<resource-ref id="ResourceRef_12345678909">
<res-ref-name>jdbc/pcbDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
除了查找此错误之外，它还可能会引发我们在此处针对 web container
Caused by: java.sql.SQLException: ORA-28001: the password has expired
说明您设置的数据库密码已过期。去重设密码。就我而言，它是甲骨文。我的 JBoss 服务器配置中明确提到了密码，- stanalone.xml。所以我已经登录并在 SQL Plus Command Line Utility 中重置它。
执行此操作时还要确保删除 JBoss tmp foler 缓存数据，因为 Web 容器已被缓存并且密码作为状态存储在容器中的某处。