Merge pull request #3289 from ZivYan/issue#3264

add test case #3264

src/test/java/com/alibaba/json/bvt/issue_3200/Issue3264.java

@@ -0,0 +1,29 @@
+package com.alibaba.json.bvt.issue_3200;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.annotation.JSONField;
+import junit.framework.TestCase;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import org.junit.Assert;
+
+/**
+ * @Author ：Nanqi
+ * @Date ：Created in 21:25 2020/6/22
+ */
+public class Issue3264 extends TestCase {
+    public void test_for_issue() throws Exception {
+        MyData data = MyData.builder().isTest(true).build();
+        String string = JSON.toJSONString(data);
+        Assert.assertTrue(string.contains("is_test"));
+    }
+
+    @Data
+    @Builder
+    @AllArgsConstructor
+    public static class MyData {
+        @JSONField(name = "is_test")
+        private Boolean isTest;
+    }
+}