Jackson throws JsonMappingException on deserialize; demands single-String constructor?

Question

Another question, but it relates to this one: Deserializing JSON with Jackson - Why JsonMappingException "No suitable constructor"?

This time I am getting

Answer 1

I had the same problem. For me, the solution was to switch from passing a String to the convertValue method, to an InputStream to the readValue method:

// Instead of this:
String jsonString = "..."
ProtocolContainer pc = mapper.convertValue(jsonString, ProtocolContainer.class);

// ... do this:
String jsonString = "..."
InputStream is = new StringInputStream(jsonString);
ProtocolContainer pc = mapper.readValue(is, ProtocolContainer.class);