问题
Softwares used :
Java Version : "1.7.0_21"
Eclipse Version : Kepler
Application Server : wildfly-8.1.0.Final(with RESTeasy bundle)
My try :
I want to implement REST web service. My resources is university.
package com.nagarro.university;
import javax.ws.rs.ApplicationPath;
import javax.ws.rs.GET;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Application;
import javax.ws.rs.core.MediaType;
@ApplicationPath("/university") //??? OR @Path("/university")???
public class University extends Application{
@GET
@Produces(MediaType.TEXT_HTML)
public String getHTMLUniversityInfo(){
return "<html> "
+ "<title>"
+ "University Information"
+ "</title>"
+ "<body>"
+ "<h1>"
+ "NAME- IIIT"
+ "</h1>"
+ "</body>"
+ "</html>";
}
@GET
@Produces(MediaType.TEXT_PLAIN)
public String getXMLUniversityInfo() {
return "NAME-IIITA";
}
@PUT
@Path("{studentRollNo}")
@Produces(MediaType.TEXT_PLAIN)
public String updateUniversityInfo(@PathParam("studentRollNo") String studentRollNo) {
// CODE TO UPDATE STUDENT
return "Done SUccessfully!!!";
}
}
web.xml which I created after reading from sources: [1] [2] [3]
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
id="WebApp_ID" version="3.1">
<display-name>UniversityRESTful-WS</display-name>
<listener>
<listener-class>
org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap
</listener-class>
</listener>
<servlet>
<servlet-name>Resteasy</servlet-name>
<servlet-class>org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher</servlet-class>
<init-param>
<param-name>javax.ws.rs.Application</param-name>
<param-value>com.nagarro.university.University</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Resteasy</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
Now, I right click on my Project to "Run on Server" but following error comes as
19:12:23,467 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-10) MSC000001: Failed to start service jboss.undertow.deployment.default-server.default-host./UniversityRESTful-WS: org.jboss.msc.service.StartException in service jboss.undertow.deployment.default-server.default-host./UniversityRESTful-WS: Failed to start service
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1904) [jboss-msc-1.2.2.Final.jar:1.2.2.Final]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_21]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_21]
at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_21]
Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: com.nagarro.university.University from [Module "deployment.UniversityRESTful-WSEAR.ear.UniversityRESTful-WS.war:main" from Service Module Loader]
at org.jboss.resteasy.spi.ResteasyDeployment.createApplication(ResteasyDeployment.java:292)
at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.init(ServletContainerDispatcher.java:95)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.init(HttpServletDispatcher.java:36)
at io.undertow.servlet.core.ManagedServlet$DefaultInstanceStrategy.start(ManagedServlet.java:214)
at io.undertow.servlet.core.ManagedServlet.createServlet(ManagedServlet.java:119)
at io.undertow.servlet.core.DeploymentManagerImpl.start(DeploymentManagerImpl.java:505)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:88)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.start(UndertowDeploymentService.java:72)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1948) [jboss-msc-1.2.2.Final.jar:1.2.2.Final]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1881) [jboss-msc-1.2.2.Final.jar:1.2.2.Final]
... 3 more
Caused by: java.lang.ClassNotFoundException: com.nagarro.university.University from [Module "deployment.UniversityRESTful-WSEAR.ear.UniversityRESTful-WS.war:main" from Service Module Loader]
at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:213) [jboss-modules.jar:1.3.3.Final]
at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:459) [jboss-modules.jar:1.3.3.Final]
at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:408) [jboss-modules.jar:1.3.3.Final]
at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:389) [jboss-modules.jar:1.3.3.Final]
at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:134) [jboss-modules.jar:1.3.3.Final]
at org.jboss.resteasy.spi.ResteasyDeployment.createApplication(ResteasyDeployment.java:288)
... 12 more
19:12:23,473 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) JBAS014613: Operation ("deploy") failed - address: ([("deployment" => "UniversityRESTful-WSEAR.ear")]) - failure description: {"JBAS014671: Failed services" => {"jboss.undertow.deployment.default-server.default-host./UniversityRESTful-WS" => "org.jboss.msc.service.StartException in service jboss.undertow.deployment.default-server.default-host./UniversityRESTful-WS: Failed to start service
Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: com.nagarro.university.University from [Module \"deployment.UniversityRESTful-WSEAR.ear.UniversityRESTful-WS.war:main\" from Service Module Loader]
Caused by: java.lang.ClassNotFoundException: com.nagarro.university.University from [Module \"deployment.UniversityRESTful-WSEAR.ear.UniversityRESTful-WS.war:main\" from Service Module Loader]"}}
19:12:23,839 INFO [org.jboss.as.server] (ServerService Thread Pool -- 28) JBAS018559: Deployed "UniversityRESTful-WSEAR.ear" (runtime-name : "UniversityRESTful-WSEAR.ear")
19:12:23,840 INFO [org.jboss.as.controller] (Controller Boot Thread) JBAS014774: Service status report
JBAS014777: Services which failed to start: service jboss.undertow.deployment.default-server.default-host./UniversityRESTful-WS: org.jboss.msc.service.StartException in service jboss.undertow.deployment.default-server.default-host./UniversityRESTful-WS: Failed to start service
19:12:23,906 INFO [org.jboss.as] (Controller Boot Thread) JBAS015961: Http management interface listening on http://127.0.0.1:9990/management
19:12:23,907 INFO [org.jboss.as] (Controller Boot Thread) JBAS015951: Admin console listening on http://127.0.0.1:9990
19:12:23,907 ERROR [org.jboss.as] (Controller Boot Thread) JBAS015875: WildFly 8.1.0.Final "Kenny" started (with errors) in 3239ms - Started 286 of 350 services (3 services failed or missing dependencies, 99 services are lazy, passive or on-demand)
19:12:24,100 INFO [org.hibernate.validator.internal.util.Version] (MSC service thread 1-5) HV000001: Hibernate Validator 5.1.0.Final
19:12:24,143 INFO [org.jboss.as.server.deployment] (MSC service thread 1-9) JBAS015974: Stopped subdeployment (runtime-name: UniversityRESTful-WS.war) in 63ms
19:12:24,144 INFO [org.jboss.as.server.deployment] (MSC service thread 1-9) JBAS015877: Stopped deployment UniversityRESTful-WSEAR.ear (runtime-name: UniversityRESTful-WSEAR.ear) in 65ms
19:12:24,221 INFO [org.jboss.as.server] (DeploymentScanner-threads - 2) JBAS018558: Undeployed "UniversityRESTful-WSEAR.ear" (runtime-name: "UniversityRESTful-WSEAR.ear")
19:12:24,224 INFO [org.jboss.as.controller] (DeploymentScanner-threads - 2) JBAS014774: Service status report
JBAS014775: New missing/unsatisfied dependencies:
service jboss.deployment.subunit."UniversityRESTful-WSEAR.ear"."UniversityRESTful-WS.war".component."javax.faces.webapp.FacetTag".START (missing) dependents: [service jboss.deployment.subunit."UniversityRESTful-WSEAR.ear"."UniversityRESTful-WS.war".deploymentCompleteService]
service jboss.deployment.subunit."UniversityRESTful-WSEAR.ear"."UniversityRESTful-WS.war".component."javax.servlet.jsp.jstl.tlv.PermittedTaglibsTLV".START (missing) dependents: [service jboss.deployment.subunit."UniversityRESTful-WSEAR.ear"."UniversityRESTful-WS.war".deploymentCompleteService]
service jboss.deployment.subunit."UniversityRESTful-WSEAR.ear"."UniversityRESTful-WS.war".component."org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher".START (missing) dependents: [service jboss.deployment.subunit."UniversityRESTful-WSEAR.ear"."UniversityRESTful-WS.war".deploymentCompleteService]
service jboss.deployment.subunit."UniversityRESTful-WSEAR.ear"."UniversityRESTful-WS.war".deploymentCompleteService (missing) dependents: [service jboss.deployment.unit."UniversityRESTful-WSEAR.ear".deploymentCompleteService]
service jboss.undertow.deployment.default-server.default-host./UniversityRESTful-WS (missing) dependents: [service jboss.deployment.subunit."UniversityRESTful-WSEAR.ear"."UniversityRESTful-WS.war".deploymentCompleteService]
JBAS014777: Services which failed to start: service jboss.undertow.deployment.default-server.default-host./UniversityRESTful-WS
19:12:28,856 INFO [org.jboss.as.server.deployment.scanner] (DeploymentScanner-threads - 2) JBAS015003: Found UniversityRESTful-WSEAR.ear in deployment directory. To trigger deployment create a file called UniversityRESTful-WSEAR.ear.dodeploy
Why am I getting ClassNotFoundException error? Do I need to add any extra dependencies in my pom.xml(so far none added because RESTeasy states no extra dependencies requires to be added)?
回答1:
I downloaded JBoss quick-start guide and observed given hellowrld-rs example. It's web.xml which was very minimally configured as given below:
<servlet-mapping>
<servlet-name>javax.ws.rs.core.Application</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
I then noted the sources I referenced earlier were guide for older JBoss(6/7) and not WildFly.
来源：https://stackoverflow.com/questions/24308617/error-in-simple-resttful-web-service-implementation