more error info.

alibaba · May 9, 2017 · 69df5e9 · 69df5e9
1 parent 9f8585e
commit 69df5e9
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/src/main/java/com/alibaba/fastjson/parser/deserializer/MapDeserializer.java b/src/main/java/com/alibaba/fastjson/parser/deserializer/MapDeserializer.java
@@ -64,7 +64,15 @@ public static Map parseMap(DefaultJSONParser parser, Map<String, Object> map, Ty
         JSONLexer lexer = parser.lexer;
 
         if (lexer.token() != JSONToken.LBRACE) {
-            throw new JSONException("syntax error, expect {, actual " + lexer.token());
+            String msg = "syntax error, expect {, actual " + lexer.tokenName();
+            if (fieldName instanceof String) {
+                msg += ", fieldName ";
+                msg += fieldName;
+            }
+            msg += ", ";
+            msg += lexer.info();
+
+            throw new JSONException(msg);
         }
 
         ParseContext context = parser.getContext();