retrofit.converter.JacksonConverter Maven / Gradle / Ivy
package retrofit.converter;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Type;
import retrofit.mime.TypedByteArray;
import retrofit.mime.TypedInput;
import retrofit.mime.TypedOutput;
/**
* A {@link Converter} which uses Jackson for reading and writing entities.
*
* @author Kai Waldron ([email protected])
*/
public class JacksonConverter implements Converter {
private static final String MIME_TYPE = "application/json; charset=UTF-8";
private final ObjectMapper objectMapper;
public JacksonConverter() {
this(new ObjectMapper());
}
public JacksonConverter(ObjectMapper objectMapper) {
this.objectMapper = objectMapper;
}
@Override public Object fromBody(TypedInput body, Type type) throws ConversionException {
try {
JavaType javaType = objectMapper.getTypeFactory().constructType(type);
return objectMapper.readValue(body.in(), javaType);
} catch (JsonParseException e) {
throw new ConversionException(e);
} catch (JsonMappingException e) {
throw new ConversionException(e);
} catch (IOException e) {
throw new ConversionException(e);
}
}
@Override public TypedOutput toBody(Object object) {
try {
String json = objectMapper.writeValueAsString(object);
return new TypedByteArray(MIME_TYPE, json.getBytes("UTF-8"));
} catch (JsonProcessingException e) {
throw new AssertionError(e);
} catch (UnsupportedEncodingException e) {
throw new AssertionError(e);
}
}
}