Question

我正在尝试使用REST Web服务构建WebApplication并成功解决了一些问题。但到目前为止我无法解决这个问题。

我正在使用TomCat v7.0 localhost并尝试访问一个简单的@GET资源。但是当我点击资源时，会出现以下错误：

A MultiException has 2 exceptions.  They are:
1. java.lang.NoSuchFieldError: WADL
2. java.lang.IllegalStateException: Unable to perform operation: create on org.glassfish.jersey.server.wadl.processor.WadlModelProcessor

我正在搜索stackoverflow并发现一个问题可能存在相同问题，但没有解决方案（2016年4月询问）

我开始将这个项目作为eclipse neon的Maven项目。

以下是一些文件：

的web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<!-- This web.xml file is not required when using Servlet 3.0 container,
     see implementation details http://jersey.java.net/nonav/documentation/latest/jax-rs.html -->
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" 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_2_5.xsd">
    <servlet>
        <servlet-name>Jersey Web Application</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>org.project.projecttest</param-value>
        </init-param>
        <init-param>
            <param-name>com.sun.jersey.config.property.packages</param-name>
            <param-value>data.controller</param-value>
        </init-param>
        <init-param>
            <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
              <param-value>true</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Jersey Web Application</servlet-name>
        <url-pattern>/resource/*</url-pattern>
    </servlet-mapping>
</web-app>

的pom.xml：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>org.project</groupId>
    <artifactId>projecttest</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>projecttest</name>

    <build>
        <finalName>projecttest</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>
                <inherited>true</inherited>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <repositories>
    <repository>
      <id>central</id>
      <name>Central Repository</name>
      <url>http://repo2.maven.org/maven2/</url>
      <layout>default</layout>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
    </repository>
  </repositories>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.glassfish.jersey</groupId>
                <artifactId>jersey-bom</artifactId>
                <version>${jersey.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-servlet-core</artifactId>
            <!-- use the following artifactId if you don't need servlet 2.x compatibility -->
            <!-- artifactId>jersey-container-servlet</artifactId -->
        </dependency>
        <!-- uncomment this to get JSON support-->
        <dependency>
            <groupId>org.glassfish.jersey.media</groupId>
            <artifactId>jersey-media-moxy</artifactId>
        </dependency>
        <!--  -->
    </dependencies>
    <properties>
        <jersey.version>2.16</jersey.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
</project>

简单的REST测试类：

package data.controller;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Response;

@Path("/test")
public class RESTTest {

    @GET
    public Response getString() {
        return Response.status(200).entity("getString is called").build();
    }
}

最后是堆栈跟踪：

HTTP Status 500 - Servlet.init() for servlet Jersey Web Application threw exception


type Exception report

message Servlet.init() for servlet Jersey Web Application threw exception

description The server encountered an internal error that prevented it from fulfilling this request.

exception  
javax.servlet.ServletException: Servlet.init() for servlet Jersey Web Application threw exception

org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:442)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1083)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:640)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Unknown Source)


root cause  A MultiException has 2 exceptions.  They are: 
1. java.lang.NoSuchFieldError: WADL
2. java.lang.IllegalStateException: Unable to perform operation: create on org.glassfish.jersey.server.wadl.processor.WadlModelProcessor

org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:394)
org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:456)
org.jvnet.hk2.internal.SingletonContext$1.compute(SingletonContext.java:114)
org.jvnet.hk2.internal.SingletonContext$1.compute(SingletonContext.java:102)
org.glassfish.hk2.utilities.cache.Cache$OriginThreadAwareFuture$1.call(Cache.java:97)
java.util.concurrent.FutureTask.run(Unknown Source)
org.glassfish.hk2.utilities.cache.Cache$OriginThreadAwareFuture.run(Cache.java:154)
org.glassfish.hk2.utilities.cache.Cache.compute(Cache.java:199)
org.jvnet.hk2.internal.SingletonContext.findOrCreate(SingletonContext.java:153)
org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2151)
org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:98)
org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:87)
org.glassfish.jersey.internal.inject.Providers.getAllRankedProviders(Providers.java:245)
org.glassfish.jersey.server.ApplicationHandler.processResourceModel(ApplicationHandler.java:704)
org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:457)
org.glassfish.jersey.server.ApplicationHandler.access$500(ApplicationHandler.java:163)
org.glassfish.jersey.server.ApplicationHandler$3.run(ApplicationHandler.java:323)
org.glassfish.jersey.internal.Errors$2.call(Errors.java:289)
org.glassfish.jersey.internal.Errors$2.call(Errors.java:286)
org.glassfish.jersey.internal.Errors.process(Errors.java:315)
org.glassfish.jersey.internal.Errors.process(Errors.java:297)
org.glassfish.jersey.internal.Errors.processWithException(Errors.java:286)
org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:320)
org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:285)
org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:310)
org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:170)
org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:358)
javax.servlet.GenericServlet.init(GenericServlet.java:158)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:442)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1083)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:640)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Unknown Source)


root cause  java.lang.NoSuchFieldError: WADL    org.glassfish.jersey.server.wadl.processor.WadlModelProcessor.<init>(WadlModelProcessor.java:96)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
java.lang.reflect.Constructor.newInstance(Unknown Source)
org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1104)
org.jvnet.hk2.internal.ClazzCreator.createMe(ClazzCreator.java:274)
org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:368)
org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:456)
org.jvnet.hk2.internal.SingletonContext$1.compute(SingletonContext.java:114)
org.jvnet.hk2.internal.SingletonContext$1.compute(SingletonContext.java:102)
org.glassfish.hk2.utilities.cache.Cache$OriginThreadAwareFuture$1.call(Cache.java:97)
java.util.concurrent.FutureTask.run(Unknown Source)
org.glassfish.hk2.utilities.cache.Cache$OriginThreadAwareFuture.run(Cache.java:154)
org.glassfish.hk2.utilities.cache.Cache.compute(Cache.java:199)
org.jvnet.hk2.internal.SingletonContext.findOrCreate(SingletonContext.java:153)
org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2151)
org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:98)
org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:87)
org.glassfish.jersey.internal.inject.Providers.getAllRankedProviders(Providers.java:245)
org.glassfish.jersey.server.ApplicationHandler.processResourceModel(ApplicationHandler.java:704)
org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:457)
org.glassfish.jersey.server.ApplicationHandler.access$500(ApplicationHandler.java:163)
org.glassfish.jersey.server.ApplicationHandler$3.run(ApplicationHandler.java:323)
org.glassfish.jersey.internal.Errors$2.call(Errors.java:289)
org.glassfish.jersey.internal.Errors$2.call(Errors.java:286)
org.glassfish.jersey.internal.Errors.process(Errors.java:315)
org.glassfish.jersey.internal.Errors.process(Errors.java:297)
org.glassfish.jersey.internal.Errors.processWithException(Errors.java:286)
org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:320)
org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:285)
org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:310)
org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:170)
org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:358)
javax.servlet.GenericServlet.init(GenericServlet.java:158)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:442)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1083)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:640)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Unknown Source)

我的Libs： referenced libraries WEB-INF lib-folder

我认为这个问题可能是由某些库引起的，但我不确定，有些修改并没有解决这个问题。

我很感谢每个答案。如果我忘记了什么，请随意问。谢谢

Answer 1

如果使用的是IntelliJ IDE，则搜索WadlModelProcessor类，您将看到哪个库具有此类。在这种情况下，它将是多个库。

您需要从pom中排除罪魁祸首之一。

在我的情况下，它是jaxrs-ri-2.11 jar-我排除了此

Answer 2

我认为你错过了@RequestMapping注释

e.g。

@RequestMapping(value="/methodName", method=RequestMethod.GET)
    public Response getString() {
        return Response.status(200).entity("getString is called").build();
    }

REST jersey json NoSuchFieldError：WADL和IllegalStateException

2 个答案: