Tomcat Jersey NoSuchMethodError

Question

我的计算机上运行的是Tomcat 9.0.20服务器，使用JDK 12和Jersey 2作为REST API帮助程序。这很好。 但是，当我将文件部署到运行相同的tomcat和Java版本的Ubuntu服务器时，出现错误500：

javax.servlet.ServletException: Servlet.init() for servlet [jersey-serlvet] threw exception
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:836)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1839)
    org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.base/java.lang.Thread.run(Thread.java:835)

Root Cause

java.lang.NoSuchMethodError: javax.ws.rs.core.Application.getProperties()Ljava/util/Map;
    org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:306)
    org.glassfish.jersey.server.ApplicationHandler.lambda$initialize$1(ApplicationHandler.java:292)
    org.glassfish.jersey.internal.Errors.process(Errors.java:292)
    org.glassfish.jersey.internal.Errors.process(Errors.java:274)
    org.glassfish.jersey.internal.Errors.processWithException(Errors.java:232)
    org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:291)
    org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:258)
    org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:311)
    org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:154)
    org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:346)
    javax.servlet.GenericServlet.init(GenericServlet.java:158)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:836)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1839)
    org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    org.apache.tomcat.util.threads.TaskThread$WrappingR

我使用了这些库：

我使用Jhades来检测重叠的库，但这对我没有帮助。

>> jHades - scanning classpath for overlapping jars: 

WARNING: this classloader is not supported: jdk.internal.loader.ClassLoaders$AppClassLoader
WARNING: this classloader is not supported: jdk.internal.loader.ClassLoaders$PlatformClassLoader

我的web.xml：

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

    <servlet>
        <servlet-name>jersey-serlvet</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>de.kai.iae</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>jersey-serlvet</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>

</web-app>

我的Hello.Java：

package de.kai.iae;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

@Path("/hello")
public class Hello {
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String sayHello() {
        return "Hello Jersey";
    }
}

Answer 1

有几个问题：

• 不得将应用程序jar放入tomcat的./lib文件夹中。相反，您应该将这些jar添加为<WAR>/WEB-INF/lib中每个应用程序的依赖项，这样，您的应用程序将是独立的，并且能够使用这些库的不同版本。

• 确保您没有打包相同依赖项的多个版本，这很可能会导致各种类加载问题，例如ClassNotFoundException，NoClasDefFoundError和NoSuchMethodError

例如，您拥有jakarta.ws.rs-api是Jax-Rs版本2，但是您还有jsr311-api是Jax-Rs版本1。

因此，在您的情况下，一些球衣代码尝试调用JaxRs-2中引入的getProperties()，但是JVM已从Application（即JaxRs-1）加载了jsr311-api类该方法不存在的地方。因此，删除jsr311-api jar将解决此问题。