improved for guava multimap support, for issue #2132

alibaba · Nov 18, 2018 · 38f46a3 · 38f46a3
1 parent a444e7f
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diff --git a/src/main/java/com/alibaba/fastjson/serializer/SerializeConfig.java b/src/main/java/com/alibaba/fastjson/serializer/SerializeConfig.java
@@ -645,6 +645,7 @@ private ObjectSerializer getObjectWriter(Class<?> clazz, boolean create) {
                         String[] names = new String[] {
                                 "com.google.common.collect.HashMultimap",
                                 "com.google.common.collect.LinkedListMultimap",
+                                "com.google.common.collect.LinkedHashMultimap",
                                 "com.google.common.collect.ArrayListMultimap",
                                 "com.google.common.collect.TreeMultimap"
                         };

diff --git a/src/test/java/com/alibaba/json/bvt/issue_2100/Issue2129.java b/src/test/java/com/alibaba/json/bvt/issue_2100/Issue2129.java
@@ -0,0 +1,16 @@
+package com.alibaba.json.bvt.issue_2100;
+
+import com.alibaba.fastjson.JSON;
+import com.google.common.collect.LinkedHashMultimap;
+import junit.framework.TestCase;
+
+public class Issue2129 extends TestCase {
+    public void test_for_issue() throws Exception {
+        LinkedHashMultimap<String, String> map = LinkedHashMultimap.create();
+        map.put("a", "1");
+        map.put("a", "b");
+        map.put("b", "1");
+        String json = JSON.toJSONString(map);
+        assertEquals("{\"a\":[\"1\",\"b\"],\"b\":[\"1\"]}", json);
+    }
+}