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to #3759 fix WriteNullBooleanAsFalse

This commit is contained in:
wenshao 2025-09-16 11:44:02 +08:00
parent b9bb68ccf6
commit cb8c721e6a
3 changed files with 70 additions and 2 deletions
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6
core/src/main/java/com/alibaba/fastjson2/writer/FieldWriterBoolean.java
View File

@ -146,7 +146,11 @@ abstract class FieldWriterBoolean
return false;
}
writeFieldName(jsonWriter);
jsonWriter.writeBooleanNull();
if ((features & JSONWriter.Feature.WriteNullBooleanAsFalse.mask) != 0) {
jsonWriter.writeBool(false);
} else {
jsonWriter.writeBooleanNull();
}
return true;
}

8
core/src/main/java/com/alibaba/fastjson2/writer/ObjectWriterCreatorASM.java
View File

@ -2875,7 +2875,13 @@ public class ObjectWriterCreatorASM
mw.visitLdcInsn(fieldWriter.features);
mw.lor();
} else if (fieldClass == Boolean.class) {
WRITE_NULL_METHOD = "writeBooleanNull";
if ((fieldWriter.features & WriteNullBooleanAsFalse.mask) != 0) {
WRITE_NULL_METHOD = "writeBool";
WRITE_NULL_DESC = "(Z)V";
mw.iconst_0();
} else {
WRITE_NULL_METHOD = "writeBooleanNull";
}
} else if (fieldClass == String.class
|| fieldClass == Appendable.class
|| fieldClass == StringBuffer.class

58
core/src/test/java/com/alibaba/fastjson2/issues/Issue3759Test.java Normal file
View File

@ -0,0 +1,58 @@
package com.alibaba.fastjson2.issues;
import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONWriter;
import com.alibaba.fastjson2.annotation.JSONField;
import com.alibaba.fastjson2.writer.ObjectWriterCreator;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertTrue;
public class Issue3759Test {
@Test
public void testWriteNullBooleanAsFalse() {
TestDTO dto = new TestDTO();
String json = JSON.toJSONString(dto);
assertTrue(json.contains("\"booleanField\":false"), "Expected booleanField to be false, but got: " + json);
}
@Test
public void testWriteNullBooleanAsFalseReflect() {
TestDTO dto = new TestDTO();
String json = ObjectWriterCreator.INSTANCE.createObjectWriter(TestDTO.class).toJSONString(dto);
assertTrue(json.contains("\"booleanField\":false"), "Expected booleanField to be false, but got: " + json);
}
@Test
public void testWriteNullBooleanAsFalseWithContext() {
TestDTO dto = new TestDTO();
String json = JSON.toJSONString(dto, JSONWriter.Feature.WriteNullBooleanAsFalse);
System.out.println("Serialized JSON with context feature: " + json);
// 检查是否包含booleanField字段且值为false
assertTrue(json.contains("\"booleanField\":false"), "Expected booleanField to be false with context feature, but got: " + json);
}
public static class TestDTO {
@JSONField(serializeFeatures = JSONWriter.Feature.WriteNullBooleanAsFalse)
private Boolean booleanField;
private String otherField = "";
public Boolean getBooleanField() {
return booleanField;
}
public void setBooleanField(Boolean booleanField) {
this.booleanField = booleanField;
}
public String getOtherField() {
return otherField;
}
public void setOtherField(String otherField) {
this.otherField = otherField;
}
}
}