I need to receive some message with SOAP so I’ve generated a few classes by xsd-scheme and maven-jaxb2-plugin like this:
JavaScript
x
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "Claim", propOrder = {
"field",
})
public class ClaimType {
@XmlElement(required = true, type = Integer.class, nillable = false)
protected Integer field;
public Integer getField() {
return bpType;
}
public void setField(Integer value) {
this.field= value;
}
}
After receiving message I need to send these to the next one microservice in wrap of HashMap. I supposed to use ObjectMapper to convert:
JavaScript
//JAXB DTO --> JSON
ObjectMapper objectMapper = new ObjectMapper();
String jsonContent = objectMapper.writeValueAsString(claimType);
map.put("json", jsonContent);
//JSON --> JAXB DTO
ObjectMapper objectMapper = new ObjectMapper();
String json = map.get("json");
ClaimType claimType = objectMapper.readValue(json, ClaimType.class);
But the generated classes are haven’t any constructors so I got the exception like “
No creator like default constructor are exists”.
What is the best preactice to work with Jaxb Dto? Can I do smth to successful convert these json to object? Thanks in advance!
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Answer
I’ve solved my problem by using ObjectMapper MixIn:
JavaScript
import javax.xml.bind.JAXBElement;
import javax.xml.namespace.QName;
@JsonIgnoreProperties(value = {"globalScope", "typeSubstituted", "nil"})
public abstract class JAXBElementMixIn<T> {
@JsonCreator
public JAXBElementMixIn(@JsonProperty("name") QName name,
@JsonProperty("declaredType") Class<T> declaredType,
@JsonProperty("scope") Class scope,
@JsonProperty("value") T value) {
}
}
And the convertation:
JavaScript
import com.fasterxml.jackson.databind.ObjectMapper;
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.addMixIn(JAXBElement.class, JAXBElementMixIn.class);