XML elements send to Spring Boot REST API is not mapped to POJO if xml element naming convention is different to POJO attribute naming convention

Question

When I'm sending XML payload to REST controller is not mapped as expected. My implementation has been done by using Spring Boot. I have generated the POJOs based on the XSD file using JaxB. XML elements are mapped only if they follow the same naming convention followed in POJO.

<Declaration xmlns:p="My_Common_Types" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="MY_Schema.xsd">
    <ID>ID</ID>
    <Regime>REG</Regime>
</Declaration>

Generated Code Using JAXB is as follows,

    @XmlAccessorType(XmlAccessType.FIELD)
    @XmlType(name = "", propOrder = {
        "id",
        "regime"
    })
    @XmlRootElement(name = "Declaration")
    public class Declaration {

        @XmlElement(name = "ID")
        protected String id;

        @XmlElement(name = "Regime")
        protected String regime;

        public String getID() {
            return id;
        }

        public void setID(String value) {
            this.id = value;
        }

        public String getRegime() {
            return regime;
        }

        public void setRegime(String value) {
            this.regime = value;
        }
    }

Rest Controller is as follows,

    @RestController
    public class XMLConsumerController {

        @PostMapping("/xmlPayload")
        public void decodeXML(@RequestBody Declaration xmlPayLoad) {

        }
    }

pom.xml dependencies are as follows,

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>com.fasterxml.jackson.dataformat</groupId>
        <artifactId>jackson-dataformat-xml</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>

</dependencies>

Really appreciate if someone can help me to solve this.

martidis · Accepted Answer · 2018-03-05 05:52:35Z

1

Remove the jackson-dataformat-xml dependency and will work.

Update:

Used your pasted xml, via Postman. The body is sent as text/xml. My dependencies as below:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.4.3.RELEASE</version>
</parent>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>

And it works fine

Update 2:

From the message in the error response, it looks that it expects namespace for the Declaration, even I do not see it in the class you posted. Probably there is a namespace specified in package-info.java.

Ok try with this body for the request:

<p:Declaration xmlns:p="My_Common_Types" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="MY_Schema.xsd">
    <ID>ID</ID>
    <Regime>REG</Regime>
</p:Declaration>

It may still fail, but definitely will not complain about Declaration. If it does about the ID or Regime then add the 'p' prefix in the payload and repeat.

edited Mar 5, 2018 at 5:52

answered Mar 4, 2018 at 15:47

martidis

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15 Comments

Indunil Moremada Over a year ago

after removing the dependency, it gives a bad request (status code 400)

martidis Over a year ago

hm bad request? that is strange. I have used what you posted and sent the xml described. Only difference might be in the pom. I ll update in the response. Please try it and let me know

Indunil Moremada Over a year ago

i have tried with your dependencies as well. But it didn't work. same thing happened. And I am using the same mechanism (Postman) to send the payload.

martidis Over a year ago

And what happens if your xml follows the naming conventions? it is strange that it sees it as a bad request.

martidis Over a year ago

Does it give you extra info? why is it a bad request? did you double check the xml sent?

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