Examples of com.fasterxml.jackson.databind.ObjectMapper

com.fasterxml.jackson.databind.ObjectMapper
This mapper (or, data binder, or codec) provides functionality for converting between Java objects (instances of JDK provided core classes, beans), and matching JSON constructs. It will use instances of {@link JsonParser} and {@link JsonGenerator}for implementing actual reading/writing of JSON.
The main conversion API is defined in {@link ObjectCodec}, so that implementation details of this class need not be exposed to streaming parser and generator classes.
Note on caching: root-level deserializers are always cached, and accessed using full (generics-aware) type information. This is different from caching of referenced types, which is more limited and is done only for a subset of all deserializer types. The main reason for difference is that at root-level there is no incoming reference (and hence no referencing property, no referral information or annotations to produce differing deserializers), and that the performance impact greatest at root level (since it'll essentially cache the full graph of deserializers involved).

    waitPort();


    assertNotNull(socketSupport);


    SimpleTestRequest req = new SimpleTestRequest();
    ObjectMapper objectMapper = new ObjectMapper();


    String content = objectMapper.writeValueAsString(req);


    Map<String, String> headers = new HashMap<String, String>();
    headers.put("type", "SimpleTestRequest");
    MindRpcMessageHolder holder = new MindRpcMessageHolder(headers, content);
    clientRequestChannel.send(MessageBuilder.withPayload(holder).build());

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    }
    else
    {
      // deserialize request body to Label
      try {
        ObjectMapper mapper = new ObjectMapper();
        label = mapper.readValue(requestJSONContent, Label.class);
      } catch (Exception e) {
        logger.info("Malformed JSON request: {}", e.getMessage());
        throw new BadRequestException("Malformed JSON request");
      }

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    }
    else
    {
      // deserialize request body to Label
      try {
        ObjectMapper mapper = new ObjectMapper();
        label = mapper.readValue(requestJSONContent, Label.class);
      } catch (Exception e) {
        logger.info("Malformed JSON request: {}", e.getMessage());
        throw new BadRequestException("Malformed JSON request");
      }
    }

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      throws ExecutionException {
    try {
      final Manifest manifest = Manifest.fromConfigFile(configFile);
      final File metaInf = new File(temp, "META-INF");
      metaInf.mkdirs();
      new ObjectMapper()
          .writeValue(new File(metaInf, "smaller.json"), manifest);


      return manifest;
    } catch (final IOException e) {
      throw new ExecutionException("Failed to write manifest", e);

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    Properties properties = new Properties();
    try (InputStream in = HelloWebServer.class.getResourceAsStream(
        "server.properties")) {
      properties.load(in);
    }
    final ObjectMapper objectMapper = new ObjectMapper();
    final MustacheFactory mustacheFactory = new DefaultMustacheFactory();
    final DataSource mysql = Helper.newDataSource(
        properties.getProperty("mysql.uri"),
        properties.getProperty("mysql.user"),
        properties.getProperty("mysql.password"));

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import java.io.IOException;
import java.util.Date;


public class JsonController extends AppController {
    public void index() throws IOException {
        String json = new ObjectMapper().writeValueAsString(new Message("Hello, World!"));
        respond(json)
                .contentType("application/json")
                .header("Content-Length", String.valueOf(json.length()))
                .header("Date", new Date().toString());
    }

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import java.util.Map;


public class JsonHelper {


    public static Map toMap(String json) {
        ObjectMapper mapper = new ObjectMapper();
        try {
            return mapper.readValue(json, Map.class);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

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            throw new RuntimeException(e);
        }
    }


    public static Map[] toMaps(String json) {
        ObjectMapper mapper = new ObjectMapper();
        try {
            return mapper.readValue(json, Map[].class);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

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    Properties properties = new Properties();
    try (InputStream in = HelloWebServer.class.getResourceAsStream(
        "server.properties")) {
      properties.load(in);
    }
    final ObjectMapper objectMapper = new ObjectMapper();
    final MustacheFactory mustacheFactory = new DefaultMustacheFactory();
    final DataSource mysql = Helper.newDataSource(
        properties.getProperty("mysql.uri"),
        properties.getProperty("mysql.user"),
        properties.getProperty("mysql.password"));

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    {
        ObjectMapper objectMapper;


        public JSONSerializer()
        {
            objectMapper = new ObjectMapper();
            objectMapper.enableDefaultTyping();
            objectMapper.configure(SerializationFeature.WRITE_EMPTY_JSON_ARRAYS, true);
            objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
            objectMapper.configure(SerializationFeature.WRITE_NULL_MAP_VALUES, true);
        }

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