POJO object for this XML response in kotlin

Question

I'm working with an API which returns XML something like this:

I'm using Jackson's XML mapper.

I tried writing a POJO object for this but that doesn't work.

How do I handle attributes of elements like type and name? Can you exemplify?

user_253468 · Answer

Based on the investigation I did in https://github.com/FasterXML/jackson-module-kotlin/issues/138 here's a workaround that's a bit more typed that the JsonNode workaround by madhead

data class Field(
    @JacksonXmlProperty(isAttribute = true)
    val type: String,

    @JacksonXmlProperty(isAttribute = true)
    val name: String,
) {
    @JacksonXmlText
    lateinit var value: String private set
}

user_750510 · Answer

As you didn't provide the schema, it's hard to guess some parts of your model. Especially, it's hard to guess field model. So I will deserialize it into a JsonNode, dynamic object that can handle literally everything. JsonIgnoreProperties just in case you have some extra fields, not mentioned here.

First, create some data classes:

@XmlRootElement(name = "xyz-objects")
@JsonIgnoreProperties(ignoreUnknown = true)
data class XyzObjects(
        @JacksonXmlProperty(isAttribute = true)
        val version: String,

        @JsonProperty(value = "object")
        @JacksonXmlElementWrapper(useWrapping = false)
        val objects: List

POJO object for this XML response in kotlin

2 Answers