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问类型'com/fasterxml/jackson/datatype/jdk8/Jdk8Module‘(当前帧，stack[2])不能分配给’com//jackson/databind/Module‘
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Stack Overflow用户

提问于 2019-11-25 13:08:24

回答 1查看 5.7K关注 0票数 1

我将jackson库从2.5.4升级到2.10.1，如下所示，我收到以下错误：

"WFLYCTL0080: Failed services" => {
        "jboss.deployment.subunit.\"m2m-rt.ear\".\"app.jar\".POST_MODULE" => "org.jboss.msc.service.StartException in service jboss.deployment.subunit.\"app.ear\".\"app.jar\".POST_MODULE: WFLYSRV0153: Failed to process phase POST_MODULE of subdeployment \"app.jar\" of deployment \"app.ear\"
    Caused by: java.lang.RuntimeException: WFLYSRV0177: Error getting reflective information for class Class with ClassLoader ModuleClassLoader for Module \"deployment.app.jar:main\" from Service Module Loader
    Caused by: java.lang.VerifyError: Bad type on operand stack
Exception Details:
  Location:
    Class.<init>()V @19: invokevirtual
  Reason:
    Type 'com/fasterxml/jackson/datatype/jdk8/Jdk8Module' (current frame, stack[2]) is not assignable to 'com/fasterxml/jackson/databind/Module'

通过我自己的研究，我发现将JBos-Deployment-structure.xml中的jackson库排除在外应该相当简单：

<?xml version="1.0"?>
<jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.2">
    <deployment>
        <exclusions>
            <module name="com.fasterxml.jackson.core.jackson-core" />
            <module name="com.fasterxml.jackson.core.jackson-annotations" />
            <module name="com.fasterxml.jackson.core.jackson-databind" />
            <module name="com.fasterxml.jackson.datatype.jackson-datatype-jdk8" />
            <module name="com.fasterxml.jackson.datatype.jackson-datatype-jsr310" />
            <module name="com.fasterxml.jackson.jaxrs.jackson-jaxrs-json-provider" />
            <module name="org.jboss.resteasy.resteasy-jackson2-provider" />
            <module name="org.jboss.resteasy.resteasy-jackson-provider" />
        </exclusions>
        <dependencies>
            <module name="org.picketbox"/>
            <module name="org.wildfly.clustering.singleton"/>
            <module name="org.jboss.ws.cxf.jbossws-cxf-client" services="import"/>
            <module name="org.apache.cxf.impl" export="true">
                <imports>
                    <include path="META-INF" />
                    <include path="META-INF/cxf" />
                    <include path="META-INF/services" />
                </imports>
            </module>
        </dependencies>
    </deployment>
    <sub-deployment name="other.jar">
        <dependencies>
            <module name="org.infinispan" slot="5.2"/>
        </dependencies>
    </sub-deployment>
</jboss-deployment-structure>

我还尝试将其包含在jboss部署结构中，而不是在根级执行排除操作：

<sub-deployment name="firstJar.jar">
        <exclusions>
            <module name="com.fasterxml.jackson.core.jackson-core" />
            <module name="com.fasterxml.jackson.core.jackson-annotations" />
            <module name="com.fasterxml.jackson.core.jackson-databind" />
            <module name="com.fasterxml.jackson.datatype.jackson-datatype-jdk8" />
            <module name="com.fasterxml.jackson.datatype.jackson-datatype-jsr310" />
            <module name="com.fasterxml.jackson.jaxrs.jackson-jaxrs-json-provider" />
            <module name="org.jboss.resteasy.resteasy-jackson2-provider" />
            <module name="org.jboss.resteasy.resteasy-jackson-provider" />
        </exclusions>
    </sub-deployment>

下面是我如何在我的gradle构建脚本中定义我的jackson库。这些库是jar的一部分，jar与其他几个jar一起部署，并将war部署到ear中。其他四个jar模块依赖于包含jackson库的jar。

我的firstJar的一部分：

compile 'com.fasterxml.jackson.core:jackson-core:2.10.1'
compile 'com.fasterxml.jackson.datatype:jackson-datatype-jdk8:2.10.1'
compile 'com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.10.1'
compile 'com.fasterxml.jackson.module:jackson-module-parameter-names:2.10.1'

另一个jar的gradle构建脚本，它依赖于上面的一个：

dependencies {
   compile project(':components:firstJar')
}

使用JBoss EAP 7.0.5

我在运行gradle依赖项扫描时注意到的一件事是，在2.5.4版本的jackson库中，我的扫描如下所示：

    +--- com.fasterxml.jackson.core:jackson-core:2.5.4
|    +--- com.fasterxml.jackson.datatype:jackson-datatype-jdk8:2.5.4
|    |    +--- com.fasterxml.jackson.core:jackson-core:2.5.4
|    |    \--- com.fasterxml.jackson.core:jackson-databind:2.5.4
|    |         +--- com.fasterxml.jackson.core:jackson-annotations:2.5.0
|    |         \--- com.fasterxml.jackson.core:jackson-core:2.5.4
|    +--- com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.5.4
|    |    +--- com.fasterxml.jackson.core:jackson-core:2.5.4
|    |    \--- com.fasterxml.jackson.core:jackson-databind:2.5.4 (*)
|    \--- com.fasterxml.jackson.module:jackson-module-parameter-names:2.5.4
|         +--- com.fasterxml.jackson.core:jackson-core:2.5.4
|         \--- com.fasterxml.jackson.core:jackson-databind:2.5.4 (*)

当我运行2.10.1时，如下所示：

|    +--- com.fasterxml.jackson.core:jackson-core:2.5.4 -> 2.10.1
|    +--- com.fasterxml.jackson.datatype:jackson-datatype-jdk8:2.10.1
|    |    +--- com.fasterxml.jackson.core:jackson-core:2.10.1
|    |    \--- com.fasterxml.jackson.core:jackson-databind:2.10.1
|    |         +--- com.fasterxml.jackson.core:jackson-annotations:2.10.1
|    |         \--- com.fasterxml.jackson.core:jackson-core:2.10.1
|    +--- com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.10.1
|    |    +--- com.fasterxml.jackson.core:jackson-annotations:2.10.1
|    |    +--- com.fasterxml.jackson.core:jackson-core:2.10.1
|    |    \--- com.fasterxml.jackson.core:jackson-databind:2.10.1 (*)
|    \--- com.fasterxml.jackson.module:jackson-module-parameter-names:2.10.1
|         +--- com.fasterxml.jackson.core:jackson-core:2.10.1
|         \--- com.fasterxml.jackson.core:jackson-databind:2.10.1 (*)

我注意到2.10.1有一个额外的jackson-annotations依赖项。因此，我尝试在我的gradle脚本中为jackson-datatype-jsr310库添加jackson-datatype-jsr310，这确实从依赖项扫描中删除了它。但我仍然有同样的错误。我也想知道为什么在第一行的依赖扫描为2.10.1，它说的2.5.4 -> 2.10.1。

java

gradle

jackson

jboss7.x

回答 1

Stack Overflow用户

回答已采纳

发布于 2020-02-06 12:32:41

最后，我需要将jackson和resteasy库排除在多个模块(jars)中，以及在resteasy中的根级。我为排除库而指定的模块使用导入库的模块(即在我的问题中我声明了A gradle build script of another jar that depends on the one above:)。

<?xml version="1.0"?>
<jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.2">
    <deployment>
        <exclusions>
            <module name="com.fasterxml.jackson.core.jackson-core" />
            <module name="com.fasterxml.jackson.core.jackson-annotations" />
            <module name="com.fasterxml.jackson.core.jackson-databind" />
            <module name="com.fasterxml.jackson.datatype.jackson-datatype-jdk8" />
            <module name="com.fasterxml.jackson.datatype.jackson-datatype-jsr310" />
            <module name="com.fasterxml.jackson.jaxrs.jackson-jaxrs-json-provider" />
            <module name="org.jboss.resteasy.resteasy-jackson2-provider" />
            <module name="org.jboss.resteasy.resteasy-jackson-provider" />
        </exclusions>
        <dependencies>
            <module name="org.picketbox"/>
            <module name="org.wildfly.clustering.singleton"/>
            <module name="org.jboss.ws.cxf.jbossws-cxf-client" services="import"/>
            <module name="org.apache.cxf.impl" export="true">
                <imports>
                    <include path="META-INF" />
                    <include path="META-INF/cxf" />
                    <include path="META-INF/services" />
                </imports>
            </module>
        </dependencies>
    </deployment>
    <sub-deployment name="moduleThatDependsOnFirst.jar">
        <exclusions>
            <module name="com.fasterxml.jackson.core.jackson-core" />
            <module name="com.fasterxml.jackson.core.jackson-annotations" />
            <module name="com.fasterxml.jackson.core.jackson-databind" />
            <module name="com.fasterxml.jackson.datatype.jackson-datatype-jdk8" />
            <module name="com.fasterxml.jackson.datatype.jackson-datatype-jsr310" />
            <module name="com.fasterxml.jackson.jaxrs.jackson-jaxrs-json-provider" />
            <module name="org.jboss.resteasy.resteasy-jackson2-provider" />
            <module name="org.jboss.resteasy.resteasy-jackson-provider" />
        </exclusions>
    </sub-deployment>
    <sub-deployment name="anotherModuleThatDependsOnFirst.jar">
        <exclusions>
            <module name="com.fasterxml.jackson.core.jackson-core" />
            <module name="com.fasterxml.jackson.core.jackson-annotations" />
            <module name="com.fasterxml.jackson.core.jackson-databind" />
            <module name="com.fasterxml.jackson.datatype.jackson-datatype-jdk8" />
            <module name="com.fasterxml.jackson.datatype.jackson-datatype-jsr310" />
            <module name="com.fasterxml.jackson.jaxrs.jackson-jaxrs-json-provider" />
            <module name="org.jboss.resteasy.resteasy-jackson2-provider" />
            <module name="org.jboss.resteasy.resteasy-jackson-provider" />
        </exclusions>
    </sub-deployment>
</jboss-deployment-structure>

我不明白的一件事是，为什么我不需要为其他使用导入库的模块的jars排除库。因此，对于其他有问题的人，我会有一个建议，那就是，为了让这件事发挥作用，你可以把库排除在哪一个罐子里。

票数 4

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/59032599

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