Question

我正在使用Jersey Client 2.8并尝试注册我自己的Jackson配置程序，该配置程序将设置自定义ObjectMapper属性。

public class ConnectionFactory {
   private final Client client;
   public ConnectionFactory() {
   ClientConfig clientConfig = new ClientConfig();
   clientConfig.property(ClientProperties.FOLLOW_REDIRECTS, true);
   clientConfig.property(ClientProperties.CONNECT_TIMEOUT, connTimeoutSec * 1000);
   clientConfig.property(ClientProperties.READ_TIMEOUT, readTimeoutSec * 1000);
   this.client = ClientBuilder.newBuilder().register(JacksonConfigurator.class).register(JacksonFeature.class).withConfig(clientConfig).build();
   // Some more code here ...
   }
}

根据Jackson Registration文档中的示例8.15，这应该向客户注册以下JacksonConfigurator类。

import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;

import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * Provides custom configuration for jackson.
 */
@Provider
public class JacksonConfigurator implements ContextResolver<ObjectMapper> {

    private final ObjectMapper mapper;

    public JacksonConfigurator() {
        mapper = new ObjectMapper();
        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    }

    @Override
    public ObjectMapper getContext(Class<?> type) {
        return mapper;
    }

}

如果我反馈来自客户端的响应，客户端应该忽略响应中无法识别的字段。但我得到了以下错误 -

Caused by: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "xyz" (class LookupData), not marked as ignorable (3 known properties: "abc", "pqr", "def"])
 at [Source: org.glassfish.jersey.message.internal.EntityInputStream@55958273; line: 1, column: 11] (through reference chain: LookupData["xyz"])
    at com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:51)
    at com.fasterxml.jackson.databind.DeserializationContext.reportUnknownProperty(DeserializationContext.java:731)
    at com.fasterxml.jackson.databind.deser.std.StdDeserializer.handleUnknownProperty(StdDeserializer.java:915)
    at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownProperty(BeanDeserializerBase.java:1292)
    at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownVanilla(BeanDeserializerBase.java:1270)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:247)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:118)
    at com.fasterxml.jackson.databind.ObjectReader._bind(ObjectReader.java:1232)
    at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:676)
    at com.fasterxml.jackson.jaxrs.base.ProviderBase.readFrom(ProviderBase.java:800)
    at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.invokeReadFrom(ReaderInterceptorExecutor.java:257)
    at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.aroundReadFrom(ReaderInterceptorExecutor.java:229)
    at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:149)
    at org.glassfish.jersey.message.internal.MessageBodyFactory.readFrom(MessageBodyFactory.java:1124)
    at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:851)
    ... 39 more

如果我在注册JacksonConfigurator课程时遗失了某些内容，有人可以告诉我吗？

Answer 1

尝试使用已正确配置的JacksonJsonProvider初始化Jersey客户端：

final JacksonJsonProvider jacksonJsonProvider = new JacksonJaxbJsonProvider().configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
final Client client = ClientBuilder.newClient(new ClientConfig(jacksonJsonProvider));

使用Jackson 2.5.1和Jersey 2.17进行测试

Answer 2

我有同样的问题，并寻找解决方案......找到你的命题，它对我有用：）

我的测试非常基础/见下文：

    Client client = ClientBuilder.newClient()
            .register(JacksonFeature.class).register(JacksonConfigurator.class);


    WebTarget wt = client.target(REST_SERVICE_URL).path(
            "amount");
    wt = wt.queryParam("from", "USD");

    ConverterResponse cr=wt.request().get(ConverterResponse.class);

如果我没有注册您的JacksonConfigurator，我会得到与您相同的例外：

UnrecognizedPropertyException: Unrecognized field

因为converterResponse定义了REST响应对象方法的子集。

非常感谢！

Answer 3

Jersey版本2.30：

例外：引起原因：com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException：无法识别的字段“ failedLoginCount” 在[资料来源：org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$UnCloseableInputStream@77fbf8c9;行：1，列：100]（通过参考链：com.xx.XXX [“ failedLoginCount”]）在com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException.from（UnrecognizedPropertyException.java:62）

它适用于以下代码：

<dependency>
    <groupId>org.glassfish.jersey.media</groupId>
    <artifactId>jersey-media-json-jackson</artifactId>
    <version>${jersey.version}</version>
</dependency>


import com.fasterxml.jackson.databind.DeserializationFeature;
import org.glassfish.jersey.client.ClientConfig;
import org.glassfish.jersey.jackson.internal.jackson.jaxrs.json.JacksonJaxbJsonProvider;
import org.glassfish.jersey.jackson.internal.jackson.jaxrs.json.JacksonJsonProvider;


public class ServiceClient {

    private Client client;

    public ServiceClient() {
        ClientConfig config = new ClientConfig();
        JacksonJsonProvider
            jacksonJsonProvider = new JacksonJaxbJsonProvider().configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        config.register(jacksonJsonProvider);

        client = ClientBuilder.newClient(config);
    }
}

Jersey 2.8客户端在反序列化期间不会忽略未知属性

3 个答案: