Jackson：从 JSON 数组中获取没有 id 的单个值

Question

I try to access a single value that doesn't have an id in a JsonNode with the help of Jackson. The JSON looks like this:

[
    {
        "annotatedClass": {
            "semanticType": ["T033"],
            "prefLabel": "Oesophageal reflux",
            ...
        }
     }
]

I want to get the value of semanticType. I tried it with String semanticType = currentNode.get("annotatedClass").get("semanticType).at("/").asText() but this gave me an empty string.

Does anyone have an idea on how to achieve this?

Answer 1

I solved it with this:

String semanticType = currentNode.get("annotatedClass").get("semanticType").get(0).asText();

The key to success was get(0) .