fix JSONReaderUTF8 nameValue1 for issue 2049 (#2410)

* fix(JSONReaderUTF8): 修复name的length=14位时，nameValue1计算 * test: add Issue2409 test 添加issue 2409的testcase
alibaba · Apr 8, 2024 · e7de4d7 · e7de4d7
1 parent 1fa051e
commit e7de4d7
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diff --git a/core/src/main/java/com/alibaba/fastjson2/JSONReaderUTF8.java b/core/src/main/java/com/alibaba/fastjson2/JSONReaderUTF8.java
@@ -3355,7 +3355,7 @@ public String readFieldName() {
                                 + (((long) bytes[nameBegin + 10]) << 32)
                                 + (((long) bytes[nameBegin + 9]) << 24)
                                 + (((long) bytes[nameBegin + 8]) << 16)
-                                + (((long) bytes[nameBegin + 8]) << 8)
+                                + (((long) bytes[nameBegin + 7]) << 8)
                                 + ((long) bytes[nameBegin + 6]);
                         break;
                     case 15:

diff --git a/core/src/test/java/com/alibaba/fastjson2/issues_2400/Issue2409.java b/core/src/test/java/com/alibaba/fastjson2/issues_2400/Issue2409.java
@@ -0,0 +1,22 @@
+package com.alibaba.fastjson2.issues_2400;
+
+import com.alibaba.fastjson2.JSON;
+import com.alibaba.fastjson2.JSONObject;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.nio.charset.StandardCharsets;
+
+/**
+ * @author milabi
+ * @since 2024-04-08
+ */
+public class Issue2409 {
+    @Test
+    void test() {
+        String s = "{\"CABCB9281415LR\":{\"key\":\"CABCB9281415LR\",\"type\":\"分类1\"},\"CABCB9261415LR\":{\"key\":\"CABCB9261415LR\",\"type\":\"分类2\"}}";
+        byte[] bytes = s.getBytes(StandardCharsets.UTF_8);
+        JSONObject jsonObject = JSON.parseObject(bytes);
+        Assertions.assertEquals(s, JSON.toJSONString(jsonObject));
+    }
+}