在野生苍蝇下加载Jackson JSR310的依赖冲突

Question

当我使用Wildfly下的Jackson JSR310模块解析一个JSR310字段时，除了以下例外情况外，它会失败：

 java.lang.NoSuchMethodError: com.fasterxml.jackson.core.JsonParser.hasToken(Lcom/fasterxml/jackson/core/JsonToken;)Z

我正在使用wildfly-javaee7-with-tools进行依赖关系管理。我的pom.xml的有趣部分

<properties>
    <version.wildfly>10.0.0.Final</version.wildfly>
    <version.jackson>2.6.3</version.jackson>
</properties>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.wildfly.bom</groupId>
            <artifactId>wildfly-javaee7-with-tools</artifactId>
            <version>${version.wildfly}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>org.jboss.resteasy</groupId>
        <artifactId>resteasy-jackson2-provider</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.datatype</groupId>
        <artifactId>jackson-datatype-hibernate5</artifactId>
        <version>${version.jackson}</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.datatype</groupId>
        <artifactId>jackson-datatype-jdk8</artifactId>
        <version>${version.jackson}</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.datatype</groupId>
        <artifactId>jackson-datatype-jsr310</artifactId>
        <version>${version.jackson}</version>
    </dependency>
</dependencies>

我的提供者：

@Provider
public class ObjectMapperProvider implements ContextResolver<ObjectMapper> {

    private final ObjectMapper objectMapper;

    public ObjectMapperProvider() {
        this.objectMapper = new ObjectMapper();
        objectMapper.registerModule(new Jdk8Module());
        objectMapper.registerModule(new JavaTimeModule());
        objectMapper.registerModule(new Hibernate5Module());
    }

    @Override
    public ObjectMapper getContext(Class<?> aClass) {
        return objectMapper;
    }

}

这显然是一种依赖冲突。然而，这是mvn dependency:tree的输出，与杰克逊有关的一切似乎都在2.6.3上。

[INFO] +- javax:javaee-web-api:jar:7.0:provided
[INFO] +- org.jboss.resteasy:resteasy-jackson2-provider:jar:3.0.14.Final:provided
[INFO] |  +- com.fasterxml.jackson.core:jackson-core:jar:2.6.3:compile
[INFO] |  +- com.fasterxml.jackson.core:jackson-databind:jar:2.6.3:compile
[INFO] |  +- com.fasterxml.jackson.core:jackson-annotations:jar:2.6.3:compile
[INFO] |  \- com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-prov ider:jar:2.6.3:provided
[INFO] |     +- com.fasterxml.jackson.jaxrs:jackson-jaxrs-base:jar:2.6.3:provided
[INFO] |     \- com.fasterxml.jackson.module:jackson-module-jaxb-annotations:jar:2.6.3:provided
[INFO] +- com.fasterxml.jackson.datatype:jackson-datatype-hibernate5:jar:2.6.3:compile
[INFO] +- com.fasterxml.jackson.datatype:jackson-datatype-jdk8:jar:2.6.3:compile
[INFO] +- com.fasterxml.jackson.datatype:jackson-datatype-jsr310:jar:2.6.3:compile

我还运行在Wildfly 10.0.0.Final服务器上，因此我不希望10.0.0.Final pom.xml与服务器上提供的实际依赖项之间的版本不匹配。

Answer 1

检查此文件夹并检查版本。wildfly-10.0.0.Final\modules\system\layers\base\com\fasterxml\jackson\core\jacks‌​on-core\main. -我很确定您需要自己指定jackson 2.6.3依赖项，因为org.jboss.resteasy:resteasy-jackson2-provider:jar:3.0.14.Final是提供范围的，而2.6.3不存在于通配符10中。