java - JAXRS 客户端找不到消息正文编写器

Question

我有一个这样配置的 jaxrs 客户端:

<jaxrs:client id="opaRestProxy" name="opaRestProxy"
        address="${endpoint}" serviceClass="com.test.RestProxy"
        inheritHeaders="true" threadSafe="true">
        <jaxrs:headers>
            <entry key="Accept" value="application/json" />
            <entry key="Content-Type" value="application/json" />
        </jaxrs:headers>
    </jaxrs:client>

但是当我发送请求时，出现以下异常:

Caused by: org.apache.cxf.interceptor.Fault: .No message body writer has been found for class : class com.test.RequestObject, ContentType : application/json.
    at org.apache.cxf.jaxrs.client.ClientProxyImpl$BodyWriter.handleMessage(ClientProxyImpl.java:646)
    at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
    at org.apache.cxf.jaxrs.client.ClientProxyImpl.doChainedInvocation(ClientProxyImpl.java:527)
    ... 47 more

我的 RestProxy 类如下所示:

@Component
public interface RestProxy {

  @POST
  @Path("/getSomething")
  String getSomething(RequestObject RequestObject);
}

Answer 1

如果您使用的是 Jackson JSON 库，则需要将这些 xml 标记添加到您的应用程序上下文中。

<jaxrs:providers>
<bean id="jacksonProvider" class="org.codehaus.jackson.jaxrs.JacksonJsonProvider" />
</jaxrs:providers>

如果您正在使用任何其他库，请将该 bean 添加到 providers 标签中。希望对您有所帮助!