Camel don't want to print POJO in java DSL route

Question

I'm trying to use Apache Camel to parse XML to POJO and have problem with printing out the actual POJO. Instead I get regular XML as if no convertation not happening. When I pass for example Customer insted of Customers its working okay. Also printing Customers class to sout in bean warks perfectly.

MyRoute
   @Autowired
    private MyBean mb;
    @Override
    public void configure() throws Exception {
        from("file:{{customer.path}}?noop=true")
                .bean(mb)
                .to("stream:out");
    }


MyBean

    @Handler
    public Customers whatIsInBody(Customers body) {
        return body;
    }

POJO classes:

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
    "customer"
})
@XmlRootElement(name = "customers")
public @Data
class Customers {

    @XmlElement(required = true, nillable = true)
    protected List<Customer> customer;

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "customer", propOrder = {
    "id",
    "name",
    "adress",
    "countryCode",
    "products"
})
public @Data
class Customer {

    protected long id;
    @XmlElement(required = true)
    protected String name;
    @XmlElement(required = true)
    protected String adress;
    @XmlElement(required = true)
    protected String countryCode;
    @XmlElement(required = true, nillable = true)
    protected List<Product> products;
}

Output example:

<customers>
    <customer>
        <id>12345</id>
        <name>str1234</name>
        <adress>str1234</adress>
        <countryCode>str1234</countryCode>
        <products>
            <id>12345</id>
            <name>str1234</name>
        </products>
    </customer>

Desired output:

Customers(customer=[Customer(id=12345, name=str1234, adress=str1234, countryCode=str1234, products=[Product(id=12345, name=str1234)]),

Have you looked at Camel data formats? There are built in data formats for Jackson XML and others which can do the automatic unmarshalling for you. http://camel.apache.org/jackson-xml.html — Souciance Eqdam Rashti, Sep 21 '17 at 10:26
@SoucianceEqdamRashti I've tried with jaxb at a seperate main - it works okay, when I try to add .unmarshal(jaxb) where jaxb is JAXBContext jc = JAXBContext.newInstance(Customers.class); DataFormat jaxb = new JaxbDataFormat(jc); but when i add it to route - nothing happens... — Eugene, Sep 21 '17 at 10:40
Did you do like described here? https://stackoverflow.com/questions/26800182/jaxb-marshalling-in-apache-camel — Souciance Eqdam Rashti, Sep 21 '17 at 10:47
@SoucianceEqdamRashti yes, I have ObjectFactory since I generated POJO with intellij out of xsd, and tried both ways bounded and unbounded — Eugene, Sep 21 '17 at 12:22

score 0 · Accepted Answer · answered Sep 22 '17 at 06:28

0

When you have camel-jaxb on the classpath, then a POJO class with JAXB annotations is type converted to XML when you convert it to a String type, which is what the stream:out would do.

You can enable the tracer to see what the message contains during routing http://camel.apache.org/tracer

So if you really want to stream:out the toString of the message body, you would need to transform it manually first, by calling its toString method

.transform(simple("${body.toString()}"))

answered Sep 22 '17 at 06:28

Claus Ibsen

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So it's identical if I change signature of bean to return String and call return body.toString() ? And if the component in "to" can work with java objects there will be no conversation? – Eugene Sep 22 '17 at 07:48
Yes if your bean return a String and you call `return body.toString()` then the `stream:out` will use that as-is – Claus Ibsen Sep 22 '17 at 08:34
Can you please help with understending why this heppens? https://stackoverflow.com/questions/46447191/cant-add-application-prop-to-camel-test – Eugene Sep 29 '17 at 10:15

Camel don't want to print POJO in java DSL route

1 Answers1