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Allow to configure Java null handling.

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This commit is contained in:
Robert Lichtenberger
2025-03-19 07:59:57 +01:00
parent 6452a6f38d
commit d1327c2da3
3 changed files with 72 additions and 1 deletions
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2
src/main/java/org/json/JSONObject.java
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@@ -332,7 +332,7 @@ public class JSONObject {
throw new NullPointerException("Null key.");
}
final Object value = e.getValue();
if (value != null) {
if (value != null || jsonParserConfiguration.isJavaNullAsJsonNull()) {
testValidity(value);
this.map.put(String.valueOf(e.getKey()), wrap(value, recursionDepth + 1, jsonParserConfiguration));
}

31
src/main/java/org/json/JSONParserConfiguration.java
View File

@@ -8,6 +8,11 @@ public class JSONParserConfiguration extends ParserConfiguration {
* Used to indicate whether to overwrite duplicate key or not.
*/
private boolean overwriteDuplicateKey;
/**
* Used to indicate whether ignore null values when converting java maps to JSONObject or not.
*/
private boolean javaNullAsJsonNull;
/**
* Configuration with the default values.
@@ -67,6 +72,21 @@ public class JSONParserConfiguration extends ParserConfiguration {
return clone;
}
/**
* Controls the parser's behavior when meeting duplicate keys.
* If set to false, the parser will throw a JSONException when meeting a duplicate key.
* Or the duplicate key's value will be overwritten.
*
* @param javaNullAsJsonNull define, if the parser should ignore null values in Java maps
* @return The existing configuration will not be modified. A new configuration is returned.
*/
public JSONParserConfiguration withJavaNullAsJsonNull(final boolean javaNullAsJsonNull) {
JSONParserConfiguration clone = this.clone();
clone.javaNullAsJsonNull = javaNullAsJsonNull;
return clone;
}
/**
* Sets the strict mode configuration for the JSON parser with default true value
@@ -106,6 +126,17 @@ public class JSONParserConfiguration extends ParserConfiguration {
public boolean isOverwriteDuplicateKey() {
return this.overwriteDuplicateKey;
}
/**
* The parser's behavior when meeting a null value in a java map, controls whether the parser should ignore
* that map entry or write a JSON entry with a null value.
*
* @return The <code>javaNullAsJsonNull</code> configuration value.
*/
public boolean isJavaNullAsJsonNull() {
return this.javaNullAsJsonNull;
}
/**
* The parser throws an Exception when strict mode is true and tries to parse invalid JSON characters.