Tomcat 未能部署 .war

2022-09-02 04:43:10

我正在尝试按照本教程创建一个简单的REST Web服务,但是我将其部署到tomcat上,它引发了一个异常:

FAIL - Application at context path /restful could not be started
FAIL - Encountered exception org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/restful]]

我已经四处寻找解决方案,发现了这个问题和这个问题,他们让我认为这是一个servlet映射问题,但我不确定如何解决它!

这是我的日志文件:

18/12/2012 9:57:16 AM org.apache.catalina.startup.HostConfig deployWAR
SEVERE: Error deploying web application archive /opt/tomcat7/webapps/restful.war
java.lang.IllegalStateException: ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/restful]]
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:904)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
    at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:977)
    at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1655)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:619)

这是我的网络.xml文件:

<?xml version="1.0" encoding="UTF-8"?>
<web-app
    xmlns="http://java.sun.com/xml/ns/javaee" version="3.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
        http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

  <servlet>
    <servlet-name>RestfulContainer</servlet-name>
    <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
    <init-param>
        <param-name>com.sun.jersey.config.property.packages</param-name>
        <param-value>com.mcnz.ws</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>RestfulContainer</servlet-name>
    <url-pattern>/resources/*</url-pattern>
  </servlet-mapping>    

</web-app>

冒着给你们太多信息的风险,这是我的文件夹结构的ls:

.:
WEB-INF

./WEB-INF:
classes
lib
web.xml

./WEB-INF/classes:
com

./WEB-INF/classes/com:
mcnz

./WEB-INF/classes/com/mcnz:
ws

./WEB-INF/classes/com/mcnz/ws:
HelloWorldResource.class
HelloWorldResource.java

./WEB-INF/lib:
asm-3.1.jar
jackson-core-asl-1.9.2.jar
jackson-jaxrs-1.9.2.jar
jackson-mapper-asl-1.9.2.jar
jackson-xc-1.9.2.jar
jersey-client-1.16.jar
jersey-core-1.16.jar
jersey-json-1.16.jar
jersey-server-1.16.jar
jettison-1.1.jar
jsr311-api-1.1.1.jar

答案 1

正如上面的注释所示,问题在于应用程序web.xml在servlet定义中引用了java类。通过确保应用程序实际包含该类,已更正了该问题。找到丢失的 jar 文件并将其放在 WEB-INF/lib 目录中。


答案 2

我在让ncwms在Apache Tomcat / 8.5.38上运行时遇到了类似的问题,显然我现在需要添加一些在最新java版本中删除的额外java库。

(请参阅此处的详细信息:如何解析java.lang.NoClassDefFoundError:Java 9中的javax/xml/bind/JAXBException )

更改在此文件中:/opt/tomcat/bin/catalina.sh

JAVA_OPTS="$JAVA_OPTS $JSSE_OPTS --add-modules java.xml.bind"

但即使这样,对于ncwms来说也是不够的。它后来在导入数据集时遇到了问题,所以我恢复到不同版本的java:

java -version
openjdk version "1.8.0_191"
OpenJDK Runtime Environment (build 1.8.0_191-8u191-b12-2ubuntu0.18.04.1-b12)
OpenJDK 64-Bit Server VM (build 25.191-b12, mixed mode)