Re: [Cppcms-users] Cppcms-users Digest, Vol 26, Issue 8
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Re: [Cppcms-users] Cppcms-users Digest, Vol 26, Issue 8
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From: 刘怀宇 <mys...@gm...> - 2011-09-08 09:24:37
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Thanks for your reply!
I found out that maybe it is just the Same Origin Policy related errors.
I used your HTML example ,and deploy it with json_rpc service in one cppcms
application.
have a see at my config.js
{
"service" : {
"api" : "http",
"port" : 8080
},
"http" : {
"script_names" : ["/jsonrpc","/html"]
}
}
We add two applications into cppcms application pool as following:
1. cppcms::service srv(argc,argv);
2.
srv.applications_pool().mount(cppcms::applications_factory<my_hello_world>()
, cppcms::mount_point(std::string(
"/html")) );
3.
srv.applications_pool().mount(cppcms::applications_factory<json_service>()
, cppcms::mount_point(std::string(
"/jsonrpc")) );
So there are two applications in the same service but different URI.
I got the response from jsonrpc successfully by this method.
But if I request the jsonrpc service from another computer by javascript ,it
doesn't work.
Is it related to the Same Origin Policy ?
Is there any method to solve this problem?
2011/9/7 <cpp...@li...>
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> Today's Topics:
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> 1. Can't get correct response from json rpc server when using
> javascript (???)
> 2. Re: Can't get correct response from json rpc server when
> using javascript (Artyom Beilis)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 7 Sep 2011 16:44:52 +0800
> From: ??? <mys...@gm...>
> Subject: [Cppcms-users] Can't get correct response from json rpc
> server when using javascript
> To: cpp...@li...
> Message-ID:
> <CAM...@ma...
> >
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hello
> There is a json rpc example in cppcms project. Now I want to send json_rpc
> request using javascript , but it doesn't work.
> I found that the Content-Type field of the HttpRequest message must be
> "application/json" for cppcms application ,otherwise I got error messages
> as follows " invalid content type "
> And I tested successfully by python(in tests dir) and curl command
>
> 1.python:
>
> def test(name,A,B):
> if A != B:
> print "Error :" + name
> print "-----Actual--"
> print A,"---Expected--"
> print B,"-------------"
> sys.exit(1)
> else:
> print "Ok:"+name
>
> def test_status(h,stat):
> if h.status != stat:
> print "Status mistmatch:",h.status,"!=",stat
> sys.exit(1)
>
> def test_valid(name,params,ans,method='POST'):
> h=httplib.HTTPConnection('192.168.30.17:8080');
> headers = {"Content-type": "application/json"}
> h.request(method,'/rpc',params,headers)
> r=h.getresponse()
> test(name,r.read(),ans)
>
> test_valid('sum','{"method" : "sum" , "params" : [ 1, 2 ], "id" :
> 1}','{"id":1,"error":null,"result":3}')
>
> 2.curl command:
> curl -i -X POST --header "Content-Type:application/json" -d
> '{"method":"sum","params":[1,2],"id":1}' http://192.168.30.17:8080/rpc
>
> They both succeeded.
>
> But I can't get correct response by using javascript.The following code
> has
> been tested in IE8 , Chrome13 and firefox6.It only success in IE8.
>
> var xhr = new XMLHttpRequest();
> var rpcUrl = 'http://192.168.30.17:8080/rpc';
> var postData = '{"method":"sum","params":[1,2],"id":1}';
>
> xhr.open("post", rpcUrl, true);
>
> xhr.setRequestHeader("Content-Type","application/json");
>
> xhr.onreadystatechange = function() {
> if (xhr.readyState === 4) {
> if (xhr.status >= 200 && xhr.status < 300 || xhr.status === 304) {
> alert(xhr.responseText)
> }
> }
> }
> xhr.send(postData);
>
> Maybe the problem is that I can't set the "Content-Type" as
> "application/json" successfully in Chrome and Firefox.
>
> Do you have any experience about ajax?
> Or just give me an idea!
> -------------- next part --------------
> An HTML attachment was scrubbed...
>
> ------------------------------
>
> Message: 2
> Date: Wed, 7 Sep 2011 03:02:34 -0700 (PDT)
> From: Artyom Beilis <art...@ya...>
> Subject: Re: [Cppcms-users] Can't get correct response from json rpc
> server when using javascript
> To: "cpp...@li..."
> <cpp...@li...>
> Message-ID:
> <131...@we...>
> Content-Type: text/plain; charset="utf-8"
>
> Actually I don't see any specific reason why wouldn't it work.
> Are you sure you don't have Same Origin Policy related errors?
>
> I've added an HTML example of JSON RPC service in the json_rpc examples
> directory:
>
> ??
> http://cppcms.svn.sourceforge.net/viewvc/cppcms/framework/trunk/examples/json_rpc/index.html?view=markup
>
> ?
> Artyom Beilis
>
>
>
> >________________________________
> >From: ??? <mys...@gm...>
> >To: cpp...@li...
> >Sent: Wednesday, September 7, 2011 11:44 AM
> >Subject: [Cppcms-users] Can't get correct response from json rpc server
> when using javascript
> >
> >
> >Hello?There is a json rpc example in cppcms project. Now I want to send
> json_rpc request ?using javascript , but it doesn't work.
> >?I found that the Content-Type field of the HttpRequest message must be
> "application/json" for ?cppcms application ,otherwise I got error messages
> as follows ?" invalid content type "?
> >And I tested ?successfully by python(in tests dir) and curl command
> >
> >
> >1.python:
> >
> >
> >def test(name,A,B):
> >? ? if A != B:
> >? ? ? ? print "Error :" + name?
> >? ? ? ? print "-----Actual--"
> >? ? ? ? print A,"---Expected--"
> >? ? ? ? print B,"-------------"
> >? ? ? ? sys.exit(1)
> >? ? else:
> >? ? ? ? print "Ok:"+name
> >
> >
> >def test_status(h,stat):
> >? ? if h.status != stat:
> >? ? ? ? print "Status mistmatch:",h.status,"!=",stat
> >? ? ? ? sys.exit(1)
> >
> >
> >def test_valid(name,params,ans,method='POST'):
> >? ? h=httplib.HTTPConnection(' 192.168.30.17:8080');
> >? ? headers = {"Content-type": "application/json"}
> >? ? h.request(method,'/rpc',params,headers)
> >? ? r=h.getresponse()
> >? ? test(name,r.read(),ans)
> >
> >
> >test_valid('sum','{"method" : "sum" , "params" : [ 1, 2 ], "id" :
> 1}','{"id":1,"error":null,"result":3}')
> >
> >
> >2.curl command:
> >?curl -i -X POST --header "Content-Type:application/json" -d
> '{"method":"sum","params":[1,2],"id":1}' http://192.168.30.17:8080/rpc
> >
> >
> >They both succeeded.
> >
> >
> >But I can't get correct response by using ?javascript.The following code
> has been tested in IE8 , Chrome13 and firefox6.It only success in IE8.
> >
> >
> >var xhr = new XMLHttpRequest();
> >var rpcUrl = 'http://192.168.30.17:8080/rpc';
> >var postData = '{"method":"sum","params":[1,2],"id":1}';
> >
> >xhr.open("post", rpcUrl, true);
> >
> >xhr.setRequestHeader("Content-Type","application/json");
> >
> >xhr.onreadystatechange = function() {
> >if (xhr.readyState === 4) {
> >if (xhr.status >= 200 && xhr.status < 300 || xhr.status === 304) {
> >alert(xhr.responseText)
> >}
> >}
> >}
> >xhr.send(postData);?
> >
> >
> >Maybe the problem is that I can't set the "Content-Type" as
> "application/json" successfully in Chrome and Firefox.
> >
> >
> >Do you have any experience about ajax?
> >Or just give me an idea!
> >
> >
> >
> >
>
> >------------------------------------------------------------------------------
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> >Virtualization increases hardware utilization and delivers a new level of
> >agility. Learn what those decisions are and how to modernize your storage
> >and backup environments for virtualization.
> >http://www.accelacomm.com/jaw/sfnl/114/51434361/
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> >
> >
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> Using storage to extend the benefits of virtualization and iSCSI
> Virtualization increases hardware utilization and delivers a new level of
> agility. Learn what those decisions are and how to modernize your storage
> and backup environments for virtualization.
> http://www.accelacomm.com/jaw/sfnl/114/51434361/
>
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