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java Jersey Web服务返回HTTP 500

2 周，2 日 Questions & Answers

我正在尝试使用Tomcat部署一个基本的REST web服务。当我在Eclipse中运行代码时，它可以工作，但当我尝试在浏览器中访问服务时，我得到：

Exception

javax.servlet.ServletException: Servlet.init() for servlet [JerseyDemo] threw exception
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:528)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
    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:609)
    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:810)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1506)
    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:830)

Root Cause

java.lang.IllegalArgumentException
    jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:170)
    jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:153)
    jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:424)
    org.glassfish.jersey.server.internal.scanning.AnnotationAcceptingListener.process(AnnotationAcceptingListener.java:170)
    org.glassfish.jersey.server.ResourceConfig.scanClasses(ResourceConfig.java:908)
    org.glassfish.jersey.server.ResourceConfig._getClasses(ResourceConfig.java:862)
    org.glassfish.jersey.server.ResourceConfig.getClasses(ResourceConfig.java:768)
    org.glassfish.jersey.server.ResourceConfig$RuntimeConfig.<init>(ResourceConfig.java:1199)
    org.glassfish.jersey.server.ResourceConfig$RuntimeConfig.<init>(ResourceConfig.java:1171)
    org.glassfish.jersey.server.ResourceConfig.createRuntimeConfig(ResourceConfig.java:1167)
    org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:344)
    org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:339)
    org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:170)
    org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:362)
    javax.servlet.GenericServlet.init(GenericServlet.java:158)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:528)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
    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:609)
    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:810)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1506)
    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:830)

以下是我的^{：

<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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.tp9.demo</groupId>
  <artifactId>JerseyDemo</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <build>
    <sourceDirectory>src</sourceDirectory>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.8.0</version>
        <configuration>
          <release>12</release>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>3.2.1</version>
        <configuration>
          <warSourceDirectory>WebContent</warSourceDirectory>
        </configuration>
      </plugin>
    </plugins>
  </build>

  <properties>
    <jersey2.version>2.19</jersey2.version>
    <jaxrs.version>2.0.1</jaxrs.version>
  </properties>

  <dependencies>

    <!--JAX-RS -->
    <dependency>
        <groupId>javax.ws.rs</groupId>
        <artifactId>javax.ws.rs-api</artifactId>
        <version>${jaxrs.version}</version>
    </dependency>

    <!--Jersey 2.19 -->
    <dependency>
        <groupId>org.glassfish.jersey.containers</groupId>
        <artifactId>jersey-container-servlet</artifactId>
        <version>${jersey2.version}</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.core</groupId>
        <artifactId>jersey-server</artifactId>
        <version>${jersey2.version}</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.core</groupId>
        <artifactId>jersey-client</artifactId>
        <version>${jersey2.version}</version>
    </dependency>
  </dependencies>

</project>

我的web.xml

<?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" version="3.1">

<display-name>Jersey Demo</display-name>
    <servlet>
        <servlet-name>JerseyDemo</servlet-name>

        <!--Define ServletContainer of Jersey -->

        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>

        <!--Define the package to search for classes -->

        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>com.tp9.demo.services</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>

    </servlet>



    <!--Map all the URLs to the Jersey ServletContainer -->
    <servlet-mapping>
        <servlet-name>JerseyDemo</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>
</web-app>

这个问题是否可能是由某些不兼容（Java、Tomcat、Jersey等）引起的或者是这辆车有问题吗。xml文件


共 (1) 个答案

  1. # 1 楼答案

    当开发人员编写的代码出现问题时，Web服务总是返回500内部服务器错误。 请检查所需的代码&；正在处理响应。因为这个问题是特定于争论的