javascript - ReactJS returns parsererror SyntaxError: Unexpected token a after AJAX call to JAVA servlet -

i'm trying finish reactjs tutorial have error "parsererror syntaxerror: unexpected token a".

i have java servlet , post methods, send response next json:

"[{"author": "pete hunt", "text": "this 1 comment"}, {"author": "jordan walke", "text": "this comment"}]" 

also tried 1 {"author": "pete hunt", "text": "this 1 comment"}, {"author": "jordan walke", "text": "this comment"}

i don't see problem. me looks missed in reactjs

upd code servlet response. i'm using gson library.

response.setcontenttype("application/json"); response.setcharacterencoding("utf-8");  modelobject obj = new modelobject(); obj.setauthor("pete hunt"); obj.settext("this 1 comment");  modelobject obj2 = new modelobject(); obj2.setauthor("jordan walke"); obj2.settext("this *another* comment");  list<modelobject> objlist = new arraylist<modelobject>();  objlist.add(obj); objlist.add(obj2);  gson gson = new gson();  printwriter out = response.getwriter(); out.write(gson.tojson(objlist)); out.close(); out.flush() 

when try parse string enclosed in redundant double quotes, this:

json.parse('"[{"author": "pete hunt", "text": "this 1 comment"}]"'); 

instead of:

json.parse(' [{"author": "pete hunt", "text": "this 1 comment"}] '); 

then syntaxerror: unexpected token a because tries parse "[{" string , doesn't expect character a next.

you have show exact command prints json string double quotes somewhere , unexpected token a become unexpected token x if change "author" "x".

what doing (though speculation because haven't shown actual code) building json string manually never idea. should use library google gson or json-io you.

see also: java json serialization - best practice question.