java - Jersey 2.9 和 Jackson 提供商

Question

我正在使用 Jersey 2.9 和 Jackson，在这里您可以找到依赖项:

 <dependency>
        <groupId>org.glassfish.jersey.media</groupId>
        <artifactId>jersey-client</artifactId>
  </dependency>

  <dependency>
        <groupId>org.glassfish.jersey.media</groupId>
        <artifactId>jersey-media-json-jackson</artifactId>
  </dependency>

当我执行此客户端代码时，我有一些 POJO 类，例如 Student.class，其中包含一些属性:

Student studentRequest = new Student(); 

Response response = target()
                .path("/students/register")
                .request(MediaType.APPLICATION_JSON_TYPE)
                .post(Entity.json(studentRequest), Response.class);

代码不起作用，我得到了这个异常:

javax.ws.rs.ProcessingException: com.fasterxml.jackson.jaxrs.base.ProviderBase._configForWriting(Lcom/fasterxml/jackson/databind/ObjectWriter;[Ljava/lang/annotation/Annotation;)Lcom/fasterxml/jackson/jaxrs/cfg/EndpointConfigBase;
    at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:233)
    at org.glassfish.jersey.client.JerseyInvocation$1.call(JerseyInvocation.java:655)
    ...
    at 
Caused by: java.lang.AbstractMethodError: com.fasterxml.jackson.jaxrs.base.ProviderBase._configForWriting(Lcom/fasterxml/jackson/databind/ObjectWriter;[Ljava/lang/annotation/Annotation;)Lcom/fasterxml/jackson/jaxrs/cfg/EndpointConfigBase;
    at com.fasterxml.jackson.jaxrs.base.ProviderBase._configForWriting(ProviderBase.java:469)
...

有人知道我为什么得到这个堆栈跟踪吗？

谢谢!

Answer 1

遇到同样的问题，在我的例子中，它通过将 maven 依赖管理系统的实现作为依赖项添加到 pom.xml 中的客户端来帮助修复 java.lang.AbstractMethodError:

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.2.2</version>
    </dependency>

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.2.2</version>
    </dependency>

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>2.2.2</version>
    </dependency>