iSharkFly-Docs
/
java-tutorials
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

BAEL-6749 improve examples for handling null fields with Jackson

This commit is contained in:
Sam Gardner 2023-07-17 15:41:07 +01:00
parent a4d39d14dd
commit 2fec1f1f7e
2 changed files with 3 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
jackson-modules/jackson-core/src/main/java/com/baeldung/jackson/defaultvalues/JsonSetterDefaultValue.java → jackson-modules/jackson-core/src/main/java/com/baeldung/jackson/defaultvalues/SetterDefaultValue.java
View File

@ -1,13 +1,10 @@
package com.baeldung.jackson.defaultvalues;
import com.fasterxml.jackson.annotation.JsonSetter;
public class JsonSetterDefaultValue {
public class SetterDefaultValue {
private String required;
private String optional = "valueIfMissingEntirely";
@JsonSetter("optional")
public void setOptional(String optional){
if(optional == null){
this.optional = "valueIfNull";

4
jackson-modules/jackson-core/src/test/java/com/baeldung/jackson/defaultvalues/DefaultValuesUnitTest.java
View File

@ -17,10 +17,10 @@ public class DefaultValuesUnitTest {
}
@Test
public void givenAClassWithAJsonSetter_whenReadingJsonWithNullOptionalValue_thenExpectDefaultValueInResult() throws JsonProcessingException {
public void givenAClassWithASetter_whenReadingJsonWithNullOptionalValue_thenExpectDefaultValueInResult() throws JsonProcessingException {
String nullOptionalField = "{\"required\": \"value\", \"optional\": null}";
ObjectMapper objectMapper = new ObjectMapper();
JsonSetterDefaultValue createdObject = objectMapper.readValue(nullOptionalField, JsonSetterDefaultValue.class);
SetterDefaultValue createdObject = objectMapper.readValue(nullOptionalField, SetterDefaultValue.class);
assert(createdObject.getRequired()).equals("value");
assert(createdObject.getOptional()).equals("valueIfNull");
}