javax.xml.bind.JAXBException在模块路径或类路径上找不到JAXB-API的实现

Question

javax.xml.bind.JAXBException在模块路径或类路径上找不到JAXB-API的实现

S34*_*34N 36 xml bind exception jaxb java-9

我正在尝试在Java 9上运行我的Spring Boot应用程序,并且我遇到了JAXB问题,该问题在指南中有所描述,但对我来说并不适用.我添加了对JAXB api的依赖,应用程序开始工作.如果您收到以下异常,则由于缺少使用Java版本> = 9的JAXB缺失实现:

javax.xml.bind.JAXBException: Implementation of JAXB-API has not been found on module path or classpath.
    at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:177) ~[jaxb-api-2.3.0.jar:2.3.0]
    at javax.xml.bind.ContextFinder.find(ContextFinder.java:364) ~[jaxb-api-2.3.0.jar:2.3.0]
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:508) ~[jaxb-api-2.3.0.jar:2.3.0]
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:465) ~[jaxb-api-2.3.0.jar:2.3.0]
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:366) ~[jaxb-api-2.3.0.jar:2.3.0]
    at com.sun.jersey.server.impl.wadl.WadlApplicationContextImpl.<init>(WadlApplicationContextImpl.java:107) ~[jersey-server-1.19.1.jar:1.19.1]
    at com.sun.jersey.server.impl.wadl.WadlFactory.init(WadlFactory.java:100) [jersey-server-1.19.1.jar:1.19.1]
    at com.sun.jersey.server.impl.application.RootResourceUriRules.initWadl(RootResourceUriRules.java:169) [jersey-server-1.19.1.jar:1.19.1]
    at com.sun.jersey.server.impl.application.RootResourceUriRules.<init>(RootResourceUriRules.java:106) [jersey-server-1.19.1.jar:1.19.1]
    at com.sun.jersey.server.impl.application.WebApplicationImpl._initiate(WebApplicationImpl.java:1359) [jersey-server-1.19.1.jar:1.19.1]
    at com.sun.jersey.server.impl.application.WebApplicationImpl.access$700(WebApplicationImpl.java:180) [jersey-server-1.19.1.jar:1.19.1]
    at com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:799) [jersey-server-1.19.1.jar:1.19.1]
    at com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:795) [jersey-server-1.19.1.jar:1.19.1]
    at com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:193) [jersey-core-1.19.1.jar:1.19.1]
    at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:795) [jersey-server-1.19.1.jar:1.19.1]
    at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:790) [jersey-server-1.19.1.jar:1.19.1]
    at com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:509) [jersey-servlet-1.19.1.jar:1.19.1]
    at com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:339) [jersey-servlet-1.19.1.jar:1.19.1]
    at com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:605) [jersey-servlet-1.19.1.jar:1.19.1]
    at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:207) [jersey-servlet-1.19.1.jar:1.19.1]
    at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:394) [jersey-servlet-1.19.1.jar:1.19.1]
    at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:744) [jersey-servlet-1.19.1.jar:1.19.1]
    at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:270) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:106) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4491) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5135) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) [na:na]
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) [na:na]
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) [na:na]
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) [na:na]
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.apache.catalina.startup.Tomcat.start(Tomcat.java:371) [tomcat-embed-core-9.0.10.jar:9.0.10]
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:107) [spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:86) [spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:413) [spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:174) [spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:179) [spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:152) [spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) [spring-context-5.1.0.RC1.jar:5.1.0.RC1]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) [spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:769) [spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405) [spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:334) [spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1252) [spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1240) [spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at io.eureka.server.EurekaServerApp.main(EurekaServerApp.java:21) [classes/:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.1.0.M1.jar:2.1.0.M1]
Caused by: java.lang.ClassNotFoundException: com.sun.xml.internal.bind.v2.ContextFactory
    at org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader.loadClass(TomcatEmbeddedWebappClassLoader.java:70) ~[spring-boot-2.1.0.M1.jar:2.1.0.M1]
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1138) ~[tomcat-embed-core-9.0.10.jar:9.0.10]
    at javax.xml.bind.ServiceLoaderUtil.nullSafeLoadClass(ServiceLoaderUtil.java:122) ~[jaxb-api-2.3.0.jar:2.3.0]
    at javax.xml.bind.ServiceLoaderUtil.safeLoadClass(ServiceLoaderUtil.java:155) ~[jaxb-api-2.3.0.jar:2.3.0]
    at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:174) ~[jaxb-api-2.3.0.jar:2.3.0]
    ... 66 common frames omitted

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Answer 1

S34*_*34N 73

将这些依赖项添加到您的pom/gradle中:

Gradle:

compile('javax.xml.bind:jaxb-api:2.3.0')
compile('javax.activation:activation:1.1')
compile('org.glassfish.jaxb:jaxb-runtime:2.3.0')

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Pom:

<!-- https://mvnrepository.com/artifact/javax.xml.bind/jaxb-api -->
<dependency>
    <groupId>javax.xml.bind</groupId>
    <artifactId>jaxb-api</artifactId>
    <version>2.3.0-b170201.1204</version>
</dependency>

<!-- https://mvnrepository.com/artifact/javax.activation/activation -->
<dependency>
    <groupId>javax.activation</groupId>
    <artifactId>activation</artifactId>
    <version>1.1</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.glassfish.jaxb/jaxb-runtime -->
<dependency>
    <groupId>org.glassfish.jaxb</groupId>
    <artifactId>jaxb-runtime</artifactId>
    <version>2.3.0-b170127.1453</version>
</dependency>

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仍然适用于Java 11 (9认同)
仍然适用于Java 10 :) (8认同)
仍适用于Java 12 :) (6认同)
Jaxb 包含在 spring-boot-data-jpa 2.1.0 https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-jpa/2.1.0.RELEASE (4认同)
奇怪...当我从终端运行应用程序 jar 时，不会发生错误。仅当我从 Intellij IDEA 运行应用程序时才会发生这种情况。 (4认同)
这对我有用，但我看到这个警告：“通过 com.sun.xml.bind.v2.runtime.reflect.opt.Injector ... 到方法 java.lang.ClassLoader.defineClass(java.lang.String 进行非法反射访问” ,字节[],int,int)` (2认同)
注意：这是一个已弃用的修复程序，也意味着“非法反射访问”错误。在这里查看 Jakarta EE 9 解决方案：/sf/answers/3675154591/。 (2认同)

Answer 2

小智 36

添加以下依赖项解决了我的问题：

    <!-- JAXB API -->
    <dependency>
        <groupId>javax.xml.bind</groupId>
        <artifactId>jaxb-api</artifactId>
        <version>2.3.1</version>
    </dependency>

    <!-- JAXB RI -->
    <dependency>
        <groupId>com.sun.xml.bind</groupId>
        <artifactId>jaxb-impl</artifactId>
        <version>2.3.4</version>
    </dependency>

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谢谢！最流行的答案在 Java 11 上对我不起作用，但这个答案却有效。 (6认同)

Answer 3

小智 25

对于那些最近在 IntelliJ 和 Java 17 中遇到此问题的人

<dependency>
    <groupId>jakarta.xml.bind</groupId>
    <artifactId>jakarta.xml.bind-api</artifactId>
    <version>4.0.0</version>
</dependency>
<dependency>
    <groupId>com.sun.xml.bind</groupId>
    <artifactId>jaxb-impl</artifactId>
    <version>4.0.0</version>
    <scope>runtime</scope>
</dependency>

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Answer 4

Dan*_*iel 7

由于我遇到了这个确切的问题，并且这是 Google 上出现的第一个 SO 问题，因此我将添加我的解决方案，因为我花了 8 个小时尝试解决该问题，但在这里找不到答案。

一些上下文：我们正在使用 Java 17、Spring boot 3.0.2。在我们的 pom 中我们有

        <dependency>
            <groupId>jakarta.xml.bind</groupId>
            <artifactId>jakarta.xml.bind-api</artifactId>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jaxb</groupId>
            <artifactId>jaxb-runtime</artifactId>
        </dependency>

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由于我们让 Spring 管理我们获得的版本

org.glassfish.jaxb:jaxb-runtime:jar:4.0.1
jakarta.xml.bind:jakarta.xml.bind-api:jar:4.0.0

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我们使用 glassfish 实现，所以我们的 ClassCastException 略有不同 java.lang.classnotfoundexception: "org.glassfish.jaxb.runtime.v2.contextfactory"

在我们的例子中，问题在于我们将 unmarshal 调用包装在 CompletableFuture 中，这导致了与 ForkJoinPool 工作方式相关的类加载器问题。一旦我们理解了这一点，我们就发现了很多相关的问题，比如这个。

我们的解决方案是在创建 JAXBContext 时传递类加载器作为第二个参数，如下所示：

JAXBContext jaxbContext =
                  JAXBContext.newInstance(MyClass.class.getPackageName(), MyClass.class.getClassLoader());

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这终于解决了这个问题

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