I've been doing some work with Struts and JSON, but I don't know
anything about using JSON RPC with Swing.
For Struts, you don't really need to use full-blown JSON RPC. You can
use an ordinary XHR submit, and then use the JSON plugin for the
result. The tricky part is handling exceptions. Without RPC, it's
helpful to setup a base Action support class that exposes the
Exception messages as properties.
In the Action support class, we add properties like this:
public String getExceptionMessage() {
ActionContext context = ActionContext.getContext();
Object value = context.getValueStack().
findValue("exception.message");
if (value==null) return null;
return value.toString();
}
public String getExceptionStack() {
ActionContext context = ActionContext.getContext();
Object value = context.getValueStack().
findValue("exceptionStack");
if (value==null) return null;
return value.toString();
}
and add an exception handler to struts.xml
<global-results>
<result name="error"/>
</global-results>
<global-exception-mappings>
<exception-mapping
exception="java.lang.Exception" result="error"/>
</global-exception-mappings>
Then, on the client-side, we check for the exception. Here's the code
we use for YUI:
my.asyncRequest = function (sAction, fnCallback) {
return YAHOO.util.Connect.asyncRequest("POST", sAction, {
success : function(o) {
var oPayload = eval("(" + o.responseText + ")") ;
if (oPayload.exceptionMessage) {
my.asyncRequestException(o.responseText);
}
fnCallback(oPayload);
},
failure : function(o) {
my.asyncRequestError(o.responseText);
}
});
};
This is working for now, but we'd like to refine the approach so that
it looks more like JSON RPC.
I'll be speaking more about this approach at the Ajax Experience in
Boston next week.
-- HTH, Ted
<http://www.husted.com/ted/blog/>
On 10/19/07, Frans Thamura <[EMAIL PROTECTED]> wrote:
> hi
>
> anyone have successdevelop JSON on Struts but the apps is not read but
> submit data
>
> i know this is JSON RPC
>
> but anyone success create it?
>
> i want the client is not javacsript buat swing
>
> any glue for me all?
>
> Frans
> Indonesia
>
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