使用 Apache Camel 处理 JSON 请求

Question

I want to handle an HTTPs request that a 3rd party is doing towards my system. The requests contains a JSON object

I have tried using the Jetty component of Camel but when the 3rd party performs the requests Camel throws the following exception:

org.apache.camel.RuntimeCamelException: Cannot read request parameters due Invalid parameter, expected to be a pair but was {"id":"321","rec":"533","status":"ok"}

The Jetty endpoint is defined in blueprint as:

<camel:endpoint id="getRequestEndpoint" uri="jetty:{{webServiceProtocol}}://{{jettyIp}}:{{jettyPort}}/getRequest?sslContextParametersRef=sslContextParameters"/>

Am I missing something or are in a totally wrong path?

Answer 1

Make sure that your client is sending the appropriate Content-Type HTTP request header for JSON, which is:

Content-Type: application/json

It looks like it wasn't sent and the Jetty component falls back to form data interpretation.

Answer 2

Make sure you also add expected bean type to your endpoint definition, like this:

.post()
    .type(User.class)
    .to("direct:your-queue")

This is strictly speaking not an answer, because in this case you get a different exception shown below. But I hope it helps someone.

org.apache.camel.InvalidPayloadException: No body available of type: 
com.example.User but has value: {id=69, name=Hello world} of type: 
java.util.LinkedHashMap