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Use JSONParserConfiguration to decide on serializing null fields into JSONObject #982

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hboggavarapu 2025-05-23 17:57:08 +05:30
parent 24fafcffeb
commit dadc3e59dc
2 changed files with 29 additions and 6 deletions
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17
src/main/java/org/json/JSONObject.java
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@ -401,12 +401,17 @@ public class JSONObject {
*/
public JSONObject(Object bean) {
this();
this.populateMap(bean);
this.populateMap(bean, new JSONParserConfiguration());
}
public JSONObject(Object bean, JSONParserConfiguration jsonParserConfiguration) {
this();
this.populateMap(bean, jsonParserConfiguration);
}
private JSONObject(Object bean, Set<Object> objectsRecord) {
this();
this.populateMap(bean, objectsRecord);
this.populateMap(bean, objectsRecord, new JSONParserConfiguration());
}
/**
@ -1764,11 +1769,11 @@ public class JSONObject {
* @throws JSONException
* If a getter returned a non-finite number.
*/
private void populateMap(Object bean) {
populateMap(bean, Collections.newSetFromMap(new IdentityHashMap<Object, Boolean>()));
private void populateMap(Object bean, JSONParserConfiguration jsonParserConfiguration) {
populateMap(bean, Collections.newSetFromMap(new IdentityHashMap<Object, Boolean>()), jsonParserConfiguration);
}
private void populateMap(Object bean, Set<Object> objectsRecord) {
private void populateMap(Object bean, Set<Object> objectsRecord, JSONParserConfiguration jsonParserConfiguration) {
Class<?> klass = bean.getClass();
// If klass is a System class then set includeSuperClass to false.
@ -1788,7 +1793,7 @@ public class JSONObject {
if (key != null && !key.isEmpty()) {
try {
final Object result = method.invoke(bean);
if (result != null) {
if (result != null || jsonParserConfiguration.isUseNativeNulls()) {
// check cyclic dependency and throw error if needed
// the wrap and populateMap combination method is
// itself DFS recursive

18
src/test/java/org/json/junit/JSONObjectTest.java
View File

@ -4012,4 +4012,22 @@ public class JSONObjectTest {
return nestedMap;
}
/**
* Tests the behavior of the {@link JSONObject} when parsing a bean with null fields
* using a custom {@link JSONParserConfiguration} that enables the use of native nulls.
*
* <p>This test ensures that uninitialized fields in the bean are serialized correctly
* into the resulting JSON object, and their keys are present in the JSON string output.</p>
*/
@Test
public void jsonObjectParseNullFieldsWithParserConfiguration() {
JSONParserConfiguration jsonParserConfiguration = new JSONParserConfiguration();
RecursiveBean bean = new RecursiveBean(null);
JSONObject jsonObject = new JSONObject(bean, jsonParserConfiguration.withUseNativeNulls(true));
String textStr = jsonObject.toString();
assertTrue("name(uninitialized field) should be serialized", textStr.contains("\"name\""));
assertTrue("ref(uninitialized field) should be serialized", textStr.contains("\"ref\""));
assertTrue("ref2(uninitialized field) should be serialized", textStr.contains("\"ref2\""));
}
}