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

[陈抒 <csf...@gm...>]

I modified the example project hello_world,also couldn't use
request().get(string const&) method correctly.

void my_hello_world::main(std::string /*url*/)
{
cppcms::http::request & r = request();
 std::string str = r.get("ok");
    response().out()<<
        "<html>\n"
        "<body>\n"
        "  <h1>Hello World</h1>\n"
        "</body>\n"
        "</html>\n";
}

Got some error messages:
/usr/local/src/cppcms-0.99.10/examples/hello_world $ make
g++ -O2 -Wall -g hello.cpp -o hello -lcppcms -lbooster
hello.cpp: In member function ‘virtual void
my_hello_world::main(std::string)’:
hello.cpp:19:21: error: invalid use of incomplete type ‘struct
cppcms::http::request’
/usr/local/include/cppcms/application.h:52:9: error: forward declaration of
‘struct cppcms::http::request’
hello.cpp:19:14: warning: unused variable ‘str’ [-Wunused-variable]
make: *** [hello] Error 1




陈抒
Best regards
http://blog.csdn.net/sheismylife


On Sat, Sep 10, 2011 at 2:02 PM, 刘怀宇 <mys...@gm...> wrote:

> 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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>> Osterman Research conducted this study that outlines how and why cloud
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>>
>> ------------------------------
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>> End of Cppcms-users Digest, Vol 26, Issue 11
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