Re: [Cppcms-users] Cppcms-users Digest, Vol 26, Issue 11

[刘怀宇 <mys...@gm...>]

Hello Artyom ,  I  try JSON_RPC over JSONP by the sample you proposed!

cppcms::http::request& r = request();
string name = "method";
r.get(name);

But I met a serious error.




2011/9/9 <cpp...@li...>

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>   1. Re: Cppcms-users Digest, Vol 26, Issue 8 (Artyom Beilis)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 8 Sep 2011 10:56:20 -0700 (PDT)
> From: Artyom Beilis <art...@ya...>
> Subject: Re: [Cppcms-users] Cppcms-users Digest, Vol 26, Issue 8
> To: cpp...@li...
> Message-ID:
>        <131...@we...>
> Content-Type: text/plain; charset=iso-8859-1
>
> > Hello,Artyom:? ? My Java developers told me they solved the
> > cross-domain problem using JSONP. Does CppCMS support it?
> > I mean JSON_RPC over JSONP.?Or do you have any better
> > idea for this problem?
>
> CppCMS Supports JSON-RPC over HTTP via POST requests.
>
> So basically that means if you want to implement JSONP
> you will just to need to handle it on your own.
>
> It should be quite trivial to implement with existing
> JSON support. (See sample below)
>
> Now you should remember that:
>
> 1. JSONP may expose the application to many security problems.
> 2. GET requests have limited size this you'll have problems
>   passing big parameters.
>
> So it should not be a problem to use but it has no real connection
> to JSON-RPC.
>
> Artyom
> --------------------------
>
>  void main(std::string url)
>  {
>     wrapper_function = request().get("jsonp");
>     std::string method = request().get("method");
>     cppcms::json::value params;
>     {
>       std::istringstream params(request().get("params"));
>       if(!v.load(params,true)) {
>          response().make_error_response(503);
>          return;
>       }
>     }
>
>     response.out() << wrapper_function <<'(';
>     if(method=="sum")
>         sum(v);
>     else if
>        ...
>     response.out() << ');
>
>  }
>  void sum(json::value const &v) {
>     int x = v[0].number();
>     int y = v[0].number();
>     json::value res = x+y;
>     response.out() << res;
>  }
>
>
> -------------
>
>
> <script src="
> http://someurl.com/rpc?method=sum&wrapper=parseRequest&parms=[10,20]
> "></script>
>
>
>
>
>
>
>
>
> ------------------------------
>
>
> ------------------------------------------------------------------------------
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> End of Cppcms-users Digest, Vol 26, Issue 11
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