传递一个手动的内容创建的JSONObject杰克逊

如果我要得到我的一个实体的I databaseentry得到正确的结果，但这个结果有换行符，这我不想有。我想是这样的（一个jsonfile）：

    {
  "id" : 20706,
  "name" : "Ecole des Ponts ParisTech",
  "institution_type" : {
    "id" : 2,
    "name" : "Research facility"
  },

但我得到的是：

{"institution":["{\r\n  \"id\" : 20706,\r\n  \"name\" : \"Ecole des Ponts ParisTech\",\r\n  \"institution_type\" : {\r\n    \"id\" : 2,\r\n    \"name\" : \"Research facility\"\r\n  },

我的代码来获得这样的：

ObjectMapper objectMapper = ObjectMapperFactory.getObjectMapper();
EditorialDAO dao = EditorialManager.dao();
    String valueValue = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(dao.get(Institution.class,20706));

是的，我希望有一个字符串，但不能与换行符和\我的“。

如跟着我ObjectMapper声明：

ObjectMapper objectMapper = new ObjectMapper();
    objectMapper.setSerializationInclusion(Include.NON_NULL);
    objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
    objectMapper.disable(SerializationFeature.WRITE_DATE_KEYS_AS_TIMESTAMPS);
    objectMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
    objectMapper.configure(SerializationFeature.EAGER_SERIALIZER_FETCH, true);
    objectMapper.configure(SerializationFeature.INDENT_OUTPUT, true);

编辑：让valueValue后，下面的代码：

String response = objectMapper.writeValueAsString(dao.get(Basic.class, 323));
                JSONObject jsonObject = new JSONObject(response);       
                jsonObject.put(institution, valueValue);
                response = jsonObject.toString();
                dao.merge(objectMapper.readValue(response, Basic.class));

如果我尝试合并我得到这个错误：

com.fasterxml.jackson.databind.JsonMappingException: Can not construct instance of Institution: no String-argument constructor/factory method to deserialize from String value();

我不明白：我只是把那inpout从数据库正好到我的JSON和我Basic.class实体的机构类型。

@Entity
@JsonInclude(Include.NON_EMPTY)
public class Basis implements{

    @Id
    @SortableField
    @SequenceGenerator(name = "basis_generator", sequenceName = "basis_id_basis_seq", allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "basis_generator")
    @Column(name="id_basis")
    @JsonView(View.Minimal.class)
    private int id;

    @ManyToOne
    @NotFound(action=NotFoundAction.IGNORE)
    @JsonView(View.Minimal.class)
    @JoinColumn(name="id_institution")
    private Institution institution;