bug fix for kotlin JSONB support, fix issue #440

alibaba · Jun 9, 2022 · 95407d2 · 95407d2
1 parent 2c3ff82
commit 95407d2
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diff --git a/core/src/main/java/com/alibaba/fastjson2/writer/ObjectWriterImplMap.java b/core/src/main/java/com/alibaba/fastjson2/writer/ObjectWriterImplMap.java
@@ -212,7 +212,12 @@ public void writeJSONB(JSONWriter jsonWriter, Object object, Object fieldName, T
             }
 
             if (entryKey instanceof String || (contextFeatures & JSONWriter.Feature.WriteClassName.mask) == 0) {
-                String key = (String) entryKey;
+                String key;
+                if (entryKey instanceof String) {
+                    key = (String) entryKey;
+                } else {
+                    key = entryKey.toString();
+                }
 
                 if (symbolTable != null) {
                     jsonWriter.writeSymbol(key);

diff --git a/core/src/test/java/com/alibaba/fastjson2/issues/Issue440.kt b/core/src/test/java/com/alibaba/fastjson2/issues/Issue440.kt
@@ -0,0 +1,14 @@
+package com.alibaba.fastjson2.issues
+
+import com.alibaba.fastjson2.JSONB
+import org.junit.jupiter.api.Test
+
+class Issue440 {
+    class User { val map = mapOf(1 to 2, "a" to "a", 3f to 3f) }
+
+    @Test
+    fun test() {
+        val user = User()
+        val bytes = JSONB.toBytes(user)
+    }
+}