我正在尝试使用Spring-boot在嵌入式Tomcat服务器中运行应用程序。我已经在应用程序中的src/main/webapp/META-INF/context.xml文件中配置了我的JNDI资源和环境。当我将此应用程序部署到标准servlet容器中时，它可以正常工作。但是，当我使用嵌入式服务器启动时，它无法识别上下文文件中存在的JNDI资源。
我尝试通过以下代码将上下文文件以编程方式添加到embeddedTomcatContainer中。这段代码来自于该博客 -
@Bean
public TomcatEmbeddedServletContainerFactory tomcatFactory() {
return new TomcatEmbeddedServletContainerFactory() {
@Override
protected TomcatEmbeddedServletContainer getTomcatEmbeddedServletContainer(
Tomcat tomcat) {
tomcat.enableNaming();
Context context = new StandardContext();
File f = new File("D:\\Workspace\\SpringBoot\\src\\main\\webapp\\META-INF\\context.xml");
try {
context.setConfigFile(f.toURI().toURL());
tomcat.getHost().addChild(context);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return super.getTomcatEmbeddedServletContainer(tomcat);
}
但我遇到了以下异常。请问有人可以告诉我如何将context.xml文件添加到嵌入式Tomcat服务器中吗？
org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@100862e: startup date [Mon Nov 23 17:21:38 IST 2015]; root of context hierarchy
2015-11-23 17:21:39.811 INFO 69992 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2015-11-23 17:21:39.822 INFO 69992 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2015-11-23 17:21:39.822 INFO 69992 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.28
2015-11-23 17:21:39.842 ERROR 69992 --- [cat-startStop-1] org.apache.catalina.core.ContainerBase : A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to initialize component [StandardEngine[Tomcat].StandardHost[localhost].StandardContext[null]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122) [na:1.7.0_85]
at java.util.concurrent.FutureTask.get(FutureTask.java:188) [na:1.7.0_85]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398) [tomcat-embed-core-8.0.28.jar:8.0.28]
at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_85]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_85]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_85]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_85]
Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [StandardEngine[Tomcat].StandardHost[localhost].StandardContext[null]]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:106) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139) [tomcat-embed-core-8.0.28.jar:8.0.28]
... 6 common frames omitted
Caused by: java.lang.NullPointerException: null
at org.apache.catalina.core.StandardContext.getObjectKeyPropertiesNameOnly(StandardContext.java:6247) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.StandardContext.getObjectNameKeyProperties(StandardContext.java:6228) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleMBeanBase.initInternal(LifecycleMBeanBase.java:61) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.ContainerBase.initInternal(ContainerBase.java:882) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.StandardContext.initInternal(StandardContext.java:6257) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) [tomcat-embed-core-8.0.28.jar:8.0.28]
... 7 common frames omitted
2015-11-23 17:21:39.982 INFO 69992 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2015-11-23 17:21:39.982 INFO 69992 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1413 ms
2015-11-23 17:21:40.122 INFO 69992 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2015-11-23 17:21:40.122 INFO 69992 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2015-11-23 17:21:40.152 ERROR 69992 --- [ main] org.apache.catalina.core.ContainerBase : A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[na:1.7.0_85]
at java.util.concurrent.FutureTask.get(FutureTask.java:188) ~[na:1.7.0_85]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:439) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:769) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:337) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:89) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.(TomcatEmbeddedServletContainer.java:76) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getTomcatEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:452) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at com.ln.risk.boot.LnBootApplication$1.getTomcatEmbeddedServletContainer(LnBootApplication.java:74) [classes/:na]
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:167) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:158) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:130) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531) [spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.doRun(SpringApplication.java:347) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:295) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1112) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1101) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at com.ln.risk.boot.LnBootApplication.main(LnBootApplication.java:39) [classes/:na]
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at java.util.concurrent.FutureTask.run(FutureTask.java:262) ~[na:1.7.0_85]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) ~[na:1.7.0_85]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) ~[na:1.7.0_85]
at java.lang.Thread.run(Thread.java:745) ~[na:1.7.0_85]
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:924) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [tomcat-embed-core-8.0.28.jar:8.0.28]
... 6 common frames omitted
2015-11-23 17:21:40.152 WARN 69992 --- [ main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
2015-11-23 17:21:40.152 INFO 69992 --- [ main] .b.l.ClasspathLoggingApplicationListener : Application failed to start with classpath: [file:/D:/Workspaces/SpringBoot/ln-boot/target/classes/, file:/C:/Users/221008/.m2/repository/org/springframework/boot/spring-boot-starter-web/1.3.0.RELEASE/spring-boot-starter-web-1.3.0.RELEASE.jar, file:/C:/Users/221008/.m2/repository/org/springframework/boot/spring-boot-starter/1.3.0.RELEASE/spring-boot-starter-1.3.0.RELEASE.jar, file:/C:/Users/221008/.m2/repository/org/springframework/boot/spring-boot/1.3.0.RELEASE/spring-boot-1.3.0.RELEASE.jar, file:/C:/Users/221008/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/1.3.0.RELEASE/spring-boot-autoconfigure-1.3.0.RELEASE.jar, file:/C:/Users/221008/.m2/repository/org/springframework/boot/spring-boot-starter-logging/1.3.0.RELEASE/spring-boot-starter-logging-1.3.0.RELEASE.jar, file:/C:/Users/221008/.m2/repository/ch/qos/logback/logback-classic/1.1.3/logback-classic-1.1.3.jar, file:/C:/Users/221008/.m2/repository/ch/qos/logback/logback-core/1.1.3/logback-core-1.1.3.jar, file:/C:/Users/221008/.m2/repository/org/slf4j/slf4j-api/1.7.13/slf4j-api-1.7.13.jar, file:/C:/Users/221008/.m2/repository/org/slf4j/jcl-over-slf4j/1.7.13/jcl-over-slf4j-1.7.13.jar, file:/C:/Users/221008/.m2/repository/org/slf4j/jul-to-slf4j/1.7.13/jul-to-slf4j-1.7.13.jar, file:/C:/Users/221008/.m2/repository/org/slf4j/log4j-over-slf4j/1.7.13/log4j-over-slf4j-1.7.13.jar, file:/C:/Users/221008/.m2/repository/org/yaml/snakeyaml/1.16/snakeyaml-1.16.jar, file:/C:/Users/221008/.m2/repository/org/springframework/boot/spring-boot-starter-validation/1.3.0.RELEASE/spring-boot-starter-validation-1.3.0.RELEASE.jar, file:/C:/Users/221008/.m2/repository/org/hibernate/hibernate-validator/5.2.2.Final/hibernate-validator-5.2.2.Final.jar, file:/C:/Users/221008/.m2/repository/javax/validation/validation-api/1.1.0.Final/validation-api-1.1.0.Final.jar, file:/C:/Users/221008/.m2/repository/org/jboss/logging/jboss-logging/3.3.0.Final/jboss-logging-3.3.0.Final.jar, file:/C:/Users/221008/.m2/repository/com/fasterxml/classmate/1.1.0/classmate-1.1.0.jar, file:/C:/Users/221008/.m2/repository/com/fasterxml/jackson/core/jackson-databind/2.6.3/jackson-databind-2.6.3.jar, file:/C:/Users/221008/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.6.3/jackson-annotations-2.6.3.jar, file:/C:/Users/221008/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.6.3/jackson-core-2.6.3.jar, file:/C:/Users/221008/.m2/repository/org/springframework/spring-web/4.2.3.RELEASE/spring-web-4.2.3.RELEASE.jar, file:/C:/Users/221008/.m2/repository/org/springframework/spring-aop/4.2.3.RELEASE/spring-aop-4.2.3.RELEASE.jar, file:/C:/Users/221008/.m2/repository/aopalliance/aopalliance/1.0/aopalliance-1.0.jar, file:/C:/Users/221008/.m2/repository/org/springframework/spring-beans/4.2.3.RELEASE/spring-beans-4.2.3.RELEASE.jar, file:/C:/Users/221008/.m2/repository/org/springframework/spring-context/4.2.3.RELEASE/spring-context-4.2.3.RELEASE.jar, file:/C:/Users/221008/.m2/repository/org/springframework/spring-webmvc/4.2.3.RELEASE/spring-webmvc-4.2.3.RELEASE.jar, file:/C:/Users/221008/.m2/repository/org/springframework/spring-expression/4.2.3.RELEASE/spring-expression-4.2.3.RELEASE.jar, file:/C:/Users/221008/.m2/repository/org/springframework/boot/spring-boot-starter-tomcat/1.3.0.RELEASE/spring-boot-starter-tomcat-1.3.0.RELEASE.jar, file:/C:/Users/221008/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.0.28/tomcat-embed-core-8.0.28.jar, file:/C:/Users/221008/.m2/repository/org/apache/tomcat/embed/tomcat-embed-el/8.0.28/tomcat-embed-el-8.0.28.jar, file:/C:/Users/221008/.m2/repository/org/apache/tomcat/embed/tomcat-embed-logging-juli/8.0.28/tomcat-embed-logging-juli-8.0.28.jar, file:/C:/Users/221008/.m2/repository/org/apache/tomcat/embed/tomcat-embed-websocket/8.0.28/tomcat-embed-websocket-8.0.28.jar, file:/C:/Users/221008/.m2/repository/mysql/mysql-connector-java/5.1.37/mysql-connector-java-5.1.37.jar, file:/C:/Users/221008/.m2/repository/org/apache/tomcat/tomcat-dbcp/8.0.28/tomcat-dbcp-8.0.28.jar, file:/C:/Users/221008/.m2/repository/org/apache/tomcat/tomcat-juli/8.0.28/tomcat-juli-8.0.28.jar, file:/C:/Users/221008/.m2/repository/org/springframework/spring-core/4.2.3.RELEASE/spring-core-4.2.3.RELEASE.jar]
2015-11-23 17:21:40.152 ERROR 69992 --- [ main] o.s.boot.SpringApplication : Application startup failed
org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:133) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.doRun(SpringApplication.java:347) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:295) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1112) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1101) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at com.ln.risk.boot.LnBootApplication.main(LnBootApplication.java:39) [classes/:na]
Caused by: org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:99) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.(TomcatEmbeddedServletContainer.java:76) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getTomcatEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:452) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at com.ln.risk.boot.LnBootApplication$1.getTomcatEmbeddedServletContainer(LnBootApplication.java:74) ~[classes/:na]
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:167) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:158) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:130) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
... 8 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardServer[-1]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:337) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:89) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
... 14 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Tomcat]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:769) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
... 16 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:439) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
... 18 common frames omitted
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:924) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
... 20 common frames omitted
编辑：
我还尝试了一些更多的Tomcat API来加载context.xml文件（其中定义了几个JNDI资源和环境），以便将其加载到嵌入式服务器实例中，但我一直收到空指针异常。以下是我尝试使用的不同API。
1. tomcat.addContext("/my-boot", System.getProperty("user.dir")+ "/src/main/webapp/META-INF/context.xml");
2. StandardContext context = new StandardContext();
context.setDefaultContextXml(System.getProperty("user.dir") + "/src/main/webapp/META-INF/context.xml");
tomcat.getHost().addChild(context);
使用这两种方法时，我在Tomcat尝试获取资源名称时都会出现NullPointerException异常。根据API方法的名称，我感觉应该有一种方法可以解决这个问题。请协助处理。
2015-11-25 11:35:01.441 INFO 74428 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.28
2015-11-25 11:35:01.471 WARN 74428 --- [ost-startStop-1] o.a.catalina.deploy.NamingResourcesImpl : Failed to create MBean for naming resource [null]
java.lang.NullPointerException: null
at javax.management.ObjectName.quote(ObjectName.java:1833) ~[na:1.7.0_85]
at org.apache.catalina.mbeans.MBeanUtils.createObjectName(MBeanUtils.java:371) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.mbeans.MBeanUtils.createMBean(MBeanUtils.java:159) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.deploy.NamingResourcesImpl.initInternal(NamingResourcesImpl.java:939) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.StandardContext.initInternal(StandardContext.java:6261) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408) [tomcat-embed-core-8.0.28.jar:8.0.28]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398) [tomcat-embed-core-8.0.28.jar:8.0.28]
at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_85]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_85]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_85]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_85]