DataGrid
format. In that blog i covered how to submit data entered by user in Flex application, using HTTP POST method.I changed the Sample code so that now i am converting the data submitted by user in Flex application into XML first then submitting it using HTTP POST method. I am using As3xml library for converting Action Script object into XML.
In order to get this sample working first i had to define Flex Contact class then change the addContact() method like this
public function addContact():void{
trace("Entering useHttpService");
service = new HTTPService();
service.url = nextActionURL;
service.resultFormat = HTTPService.RESULT_FORMAT_TEXT;
service.method = "POST";
var myContact:Contact = getContact();
var myContactXML:XML= Asx3mer.instance.toXML(myContact);
var params:Object = { myContactStr: myContactXML };
service.send(params);
getContactList();
trace("Entering useHttpService");
}
public function getContact():Contact{
var myContact:Contact =new Contact();
myContact.firstName = txtFirstName.text;
myContact.lastName = txtLastName.text;
myContact.email = txtEmail.text;
return myContact;
}
First i did create a
getContact()
method which reads values entered by user in Flex application and returns a Contact
object based on it. Then converting Contact Flex object into XML object is pretty simple all i had to do was call Asx3mer.instance.toXML()
. What i liked most is about working with XML in Flex is how easy it is pretty print XML, all i had to do was print the XML object and it prints a XML like this
<com.webspherenotes.flex.Contact>
<firstName>Sachin</firstName>
<lastName>Tendulkar</lastName>
<email>sachin@mi.com</email>
</com.webspherenotes.flex.Contact>
I am submitting a form to the actionURL with this XML as value of
myContactStr
Then on the server side i had to create a method which can parse the XML string into Java Object, i am using Xstream for that
public static Contact convertXMLToJava(String xmlStr){
XStream xstream = new XStream(new DomDriver());
xstream.setMode(XStream.NO_REFERENCES);
xstream.alias("com.webspherenotes.flex.Contact", Contact.class);
System.out.println("setting values of contact object");
Contact contact= (Contact)xstream.fromXML(xmlStr);
return contact;
}
2 comments:
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