jackson exception in unirest: Serialization Impossible. Can't find an ObjectMapper implementation

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ObjectMapper mapper = new ObjectMapper();
ObjectNode object = mapper.readValue("{\"myjson\":\"string\"}", ObjectNode.class);
HttpResponse<JsonNode> postResponse = Unirest.post("")
    .header("accept", "application/json")
    .body(object)
    .asJson();

Causes the runtime exception in the title on the call to body. I'm not sure what to do here, I'm attempting to wrap a json string in a JsonNode object which I'd assume is normal procedure when sending via unirest interface (in the data body).

I don't think you can do it like that. You can't pass ObjectNode into body method. You might implement custom ObjectMapper for that type. But I don't think that it's what you want.

Perhaps you can do something like this:

.header("Content-Type", "application/json")
.body(mapper.writeValueAsString(object))

com.mashape.unirest.http.ObjectMapper java code examples, jackson exception in unirest: Serialization Impossible. Can't find an ObjectMapper implementation - json. First – let's take a look at Jsonmappingexception: Can Not Construct Instance Of. This exception is thrown if Jackson can't create an instance of the class – this happens if the class is abstract or it is just an interface.

Looking at the body implementation of HttpRequestWithBody:

public RequestBodyEntity body(Object body) {
    ObjectMapper objectMapper = (ObjectMapper) Options.getOption(Option.OBJECT_MAPPER);

    if (objectMapper == null) {
        throw new RuntimeException("Serialization Impossible. Can't find an ObjectMapper implementation.");
    }

    return body(objectMapper.writeValue(body));
}

It seems that passing an objet is ok if an ObjectMapper is available

jackson exception in unirest: Serialization Impossible. Can't, OBJECT_MAPPER); if (objectMapper == null) { throw new RuntimeException("​Serialization Impossible. Can't find an ObjectMapper implementation."); } return  The Map values are serialized using the defaults unless you override them. You can also set Maps as values if you want nested JSON objects, or you can use Java objects that are serialized with the per-field strategy as usual. Jackson - Serialize a String Wrapper class

According to the docs you need to set up ObjectMapper, e.g.

Unirest.config().setObjectMapper(new JacksonObjectMapper());

If you already have object mapper configured for your needs, pass it to constructor:

new JacksonObjectMapper(yourObjectMapper);

There is a separate dependency for object mappers for Jackson or Gson implementation

Java Examples for com.mashape.unirest.http.ObjectMapper, ObjectMapper mapper = new ObjectMapper(); ObjectNode object = mapper.​readValue("{\"myjson\":\"string\"}", ObjectNode.class); HttpResponse postResponse  For example, serializing Json from \t o Object using the popular Jackson ObjectMapper takes only few lines of code. ```java // Only one time: Unirest. setObjectMapper(new ObjectMapper {private com.fasterxml.jackson.databind. ObjectMapper objectMapper = new com.fasterxml.jackson.databind. ObjectMapper (); public Object readValue (String value)

Updating Jira Cloud using the Unirest API, private void setObjectMapper() { final Gson gson = new Gson(); Unirest.​setObjectMapper(new ObjectMapper jacksonObjectMapper = new com.​fasterxml.jackson.databind. OBJECT_MAPPER); if (objectMapper == null) { throw new RuntimeException("Serialization Impossible. Can't find an ObjectMapper implementation. We will use Unirest Java API to communicate with above REST API. The dependencies we need directly in the pom file is: The dependencies we need directly in the pom file is: <dependency> <groupId>com.mashape.unirest</groupId> <artifactId>unirest-java</artifactId> <version>1.4.9</version> </dependency>

Added support for asObject response type (serializing). · Issue #83 , RuntimeException: Serialization Impossible. Can't find Impossible. Can't find an ObjectMapper implementation. com.mashape.unirest.request. And you need to have additional Maven dependencies on the Jackson-bind: <​dependency>  The following are top voted examples for showing how to use com.mashape.unirest.http.Unirest.These examples are extracted from open source projects. You can vote up the examples you like and your votes will be used in our system to generate more good examples.

Jackson Exceptions, If the request supports and it is of type `HttpRequestWithBody`, a body it can be For example, serializing Json from\to Object using the popular Jackson ObjectMapper takes only few lines of code. src/main/java/com/mashape/unirest​/http/HttpResponse.java throw new RuntimeException("Serialization Impossible. Can't  If you already have a map of parameters or do not wish to use seperate field methods for each one there is a `.fields(Map<String, Object> fields)` method that will serialize each key - value to form parameters on your request.