bug fixed for LinkedList serialize performance. #1375

src/main/java/com/alibaba/fastjson/serializer/SerializeConfig.java

@@ -22,16 +22,7 @@ import java.net.URI;
 import java.net.URL;
 import java.nio.charset.Charset;
 import java.text.SimpleDateFormat;
-import java.util.Calendar;
-import java.util.Collection;
-import java.util.Currency;
-import java.util.Date;
-import java.util.Enumeration;
-import java.util.List;
-import java.util.Locale;
-import java.util.Map;
-import java.util.TimeZone;
-import java.util.UUID;
+import java.util.*;
 import java.util.regex.Pattern;
 
 import com.alibaba.fastjson.JSON;
@@ -121,6 +112,8 @@ public class SerializeConfig {
             Class<?> superClass;
             if (Map.class.isAssignableFrom(clazz)) {
                 serializers.put(clazz, new MapSerializer());
+            } else if (AbstractSequentialList.class.isAssignableFrom(clazz)) {
+                serializers.put(clazz, CollectionCodec.instance);
             } else if (List.class.isAssignableFrom(clazz)) {
                 serializers.put(clazz, new ListSerializer());
             } else if (Collection.class.isAssignableFrom(clazz)) {

src/test/java/com/alibaba/json/bvt/issue_1300/Issue1375.java

@@ -0,0 +1,22 @@
+package com.alibaba.json.bvt.issue_1300;
+
+import com.alibaba.fastjson.serializer.CollectionCodec;
+import com.alibaba.fastjson.serializer.ListSerializer;
+import com.alibaba.fastjson.serializer.SerializeConfig;
+import junit.framework.TestCase;
+
+import java.util.ArrayList;
+import java.util.LinkedList;
+
+/**
+ * Created by wenshao on 06/08/2017.
+ */
+public class Issue1375 extends TestCase {
+    public void test_issue() throws Exception {
+        assertSame(CollectionCodec.instance
+                , SerializeConfig.getGlobalInstance()
+                        .get(LinkedList.class));
+        assertTrue(SerializeConfig.getGlobalInstance()
+                        .get(ArrayList.class) instanceof ListSerializer);
+    }
+}