There’s no need to use custom serializers/deserializers here. Use jackson-modules-java8’s datetime module: Datatype module to make Jackson recognize Java 8 Date & Time API data types (JSR-310). This module adds support for quite a few classes: Duration Instant LocalDateTime LocalDate LocalTime MonthDay OffsetDateTime OffsetTime Period Year YearMonth ZonedDateTime ZoneId ZoneOffset
I did this research the last week and I ended up with the same 2 libraries. As I’m using Spring 3 (that adopts Jackson in its default Json view ‘JacksonJsonView’) it was more natural for me to do the same. The 2 lib are pretty much the same… at the end they simply map to … Read more
Exactly how to do this depends on the version of Jackson that you’re using. This changed around version 1.9, before that, you could do this by adding @JsonIgnore to the getter. Which you’ve tried: Add @JsonIgnore on the getter method only Do this, and also add a specific @JsonProperty annotation for your JSON “password” field … Read more
Yes, that is safe and recommended. The only caveat from the page you referred is that you can’t be modifying configuration of the mapper once it is shared; but you are not changing configuration so that is fine. If you did need to change configuration, you would do that from the static block and it … Read more
So, finally I realized what the problem is. It is not a Jackson configuration issue as I doubted. Actually the problem was in ApplesDO Class: public class ApplesDO { private String apple; public String getApple() { return apple; } public void setApple(String apple) { this.apple = apple; } public ApplesDO(CustomType custom) { //constructor Code } … Read more
JsonIgnoreProperties [2017 Update]: You can now use JsonIgnoreProperties to suppress serialization of properties (during serialization), or ignore processing of JSON properties read (during deserialization). If this is not what you’re looking for, please keep reading below. (Thanks to As Zammel AlaaEddine for pointing this out). JsonManagedReference and JsonBackReference Since Jackson 1.6 you can use two … Read more
Let’s evaluate the parsing of each: http://jsfiddle.net/brandonscript/Y2dGv/ var json1 = ‘{}’; var json2 = ‘{“myCount”: null}’; var json3 = ‘{“myCount”: 0}’; var json4 = ‘{“myString”: “”}’; var json5 = ‘{“myString”: “null”}’; var json6 = ‘{“myArray”: []}’; console.log(JSON.parse(json1)); // {} console.log(JSON.parse(json2)); // {myCount: null} console.log(JSON.parse(json3)); // {myCount: 0} console.log(JSON.parse(json4)); // {myString: “”} console.log(JSON.parse(json5)); // {myString: “null”} … Read more
Jackson provides an annotation that can be used on class level (JsonIgnoreProperties). Add the following to the top of your class (not to individual methods): @JsonIgnoreProperties(ignoreUnknown = true) public class Foo { … } Depending on the jackson version you are using you would have to use a different import in the current version it … Read more
To suppress serializing properties with null values using Jackson >2.0, you can configure the ObjectMapper directly, or make use of the @JsonInclude annotation: mapper.setSerializationInclusion(Include.NON_NULL); or: @JsonInclude(Include.NON_NULL) class Foo { String bar; } Alternatively, you could use @JsonInclude in a getter so that the attribute would be shown if the value is not null. A more … Read more
You can use Jackson’s class-level annotation: import com.fasterxml.jackson.annotation.JsonIgnoreProperties @JsonIgnoreProperties class { … } It will ignore every property you haven’t defined in your POJO. Very useful when you are just looking for a couple of properties in the JSON and don’t want to write the whole mapping. More info at Jackson’s website. If you want to … Read more