jackson

问题 Jackson has ability to skip unknow properties globally using DeserializationFeature , but I can't find any global config to ignore whole class from being parsed. I have class with two methods with the same name but with different arguments, so I want to set this class as ignorable globally(using objectMapper object) not just by adding any annotations to model class. May be someone faced with such problem. Sorry for bad English. 回答1: One option is to mark the type you wish to ignore with

问题 I have a JSON file(it contains an array of JSON objects.) I am trying to read it object by object. Each object I need to convert it to a LinkedHashMap<String,String> where both the key and value are strings. Note that even if the JSON objects contain a non-string value( Integer/Boolean ), I want my LinkedHashMap to contain a string. This is my JSON file ( films.json ): [ { "name": "Fight Club", "year": 1999, } ] Now, this has 1 object. I want to convert it to a LinkedHashMap<String,String> .

问题 I am trying to create a class with a java.lang.Exception stored as a field. Also I am trying to exclude stack trace from serialization/deserialization using @JsonIgnoreProperties annotation. import com.fasterxml.jackson.annotation.JsonIgnoreProperties; import com.fasterxml.jackson.databind.ObjectMapper; import java.io.IOException; class ExWrapper { @JsonIgnoreProperties({"stackTrace"}) public Exception ex; @Override public String toString() { return "ExWrapper{" + "ex=" + ex + '}'; } } public

问题 I have created my request POJO as follows @JsonInclude(JsonInclude.Include.NON_NULL) public class Notification { @NotNull private String clientId; private String userId; @NotNull private String requestingService; @NotNull private String message; @NotNull private String messageType; when I send request body as follow, it is working fine. { "clientId":"9563", "userId":"5855541", "requestingService":"cm-dm-service", "message":"Document Created", "messageType":"user-msg" } But when I sent like

问题 I want to deserialize classes of the form: public class TestFieldEncryptedMessage implements ITextMessage { @JsonProperty("text") @Encrypted(cipherAlias = "testAlias") private String text; public TestFieldEncryptedMessage() { } @JsonCreator public TestFieldEncryptedMessage(@JsonProperty("text") String text) { this.text = text; } public String getText() { return text; } public void setText(String text) { this.text = text; } } Where the text is encrypted and deserialization should unencrypt the

问题 I have a pojo that has a field of type CurrencyUnit from the javamoney library. When I marshall this pojo Jackson throws an exception. I remember this exception when I did not define any default constructor. But in this case I can not maintain the CurrencyUnit class since it's coming from a dependency. How can I still make this work? Exception: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `javax.money.CurrencyUnit` (no Creators, like default

问题 I have the below Json { "user": { "name": "Ram", "age": 27 } } which I want to de-serialize into an instance of the class public class User { private String name; private int age; // getters & setters } For this, I have used @JsonRootName on class name and something like below @Configuration public class JacksonConfig { @Bean public Jackson2ObjectMapperBuilder jacksonBuilder() { Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder(); builder.featuresToEnable

问题 I am trying to implement a custom JSON serializer class to display object BigInteger values as string in the JSON response. I have implememented a custom serializer class public class CustomCounterSerializer extends StdSerializer<BigInteger> { private static final long serialVersionUID = 5440920327083673598L; public CustomCounterSerializer() { this(BigInteger.class); } public CustomCounterSerializer(Class<BigInteger> vc) { super(vc); } @Override public void serialize(BigInteger value,

问题 I am trying to implement a custom JSON serializer class to display object BigInteger values as string in the JSON response. I have implememented a custom serializer class public class CustomCounterSerializer extends StdSerializer<BigInteger> { private static final long serialVersionUID = 5440920327083673598L; public CustomCounterSerializer() { this(BigInteger.class); } public CustomCounterSerializer(Class<BigInteger> vc) { super(vc); } @Override public void serialize(BigInteger value,

问题 If there a way to disable @JsonProperty(access = JsonProperty.Access.WRITE_ONLY) or @JsonIgnore on testing? I am trying to test my createUser() but I need user.getPassword() method be enabled when I parse my User object. If I comment the @JsonProperty line it works but if that I do so, the password field will be returned on GET /users or GET /users/{id} method. Here is my test @Test public void createUser() throws Exception { User user = UserFactory.newUser(); String userJson = objectMapper