In -depth analysis of the implementation principles of the "Blazeds Core Library" framework in the Java class library
In -depth analysis of the implementation principles of the "Blazeds Core Library" framework in the Java class library
Overview:
Blazeds is an open source data service framework for building Flex and Java Enterprise applications.It provides a mechanism that transmits data between the client and the server to achieve real -time and interactive applications.This article will in -depth analysis of the implementation principles of the core library of Blazeds in the Java class library, and provide the corresponding Java code example in order to better understand.
Blazeds data transmission principle:
Blazeds uses a binary data format called AMF (Action Message Format) to transmit data.AMF is a lightweight and efficient data exchange format. Its advantage is that data serialization and high -performance high -performance and data saving are saved.In Blazeds, the AMF format is used to serialize the Java object to byte flow and transmit between the client and the server.
Blazeds core library implementation principle:
The implementation principle of the core library of Blazeds can be divided into the following aspects:
1. Data serialization and retrograde serialization:
Blazeds uses AMF for data serialization and derivatives.During the data transmission process, the Java object will be serialized into the byte flow in the AMF format, and the derivativeization is restored to the Java object on the receiver.Here is a simple example that demonstrates how serialized and desertified a Java object:
// java object serialization
ObjectOutputStream out = new ObjectOutputStream(outputStream);
out.writeObject(obj);
// java objects to serialize
ObjectInputStream in = new ObjectInputStream(inputStream);
Object obj = in.readObject();
2. Communication protocol and network transmission:
Blazeds uses HTTP -based communication protocols to process communication between clients and server.When the client sends a request, after the Blazeds server receives the request, the network transmission module in the Java class library is used to process the request and response.Here is a simple example that demonstrates how to use the network transmission module in the Java class library to send the HTTP request:
URL url = new URL("http://example.com/api");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
int responseCode = connection.getResponseCode();
if (responseCode == HttpURLConnection.HTTP_OK) {
InputStream inputStream = connection.getInputStream();
// Processing response data
} else {
// Processing request failure
}
connection.disconnect();
3. Client and server -side communication interaction:
Blazeds uses a technology called Remotion to handle communication interaction between clients and server.Remotion provides a remote call mechanism based on agent objects that allows clients to transparently call the server's method and get the return result.The following is a simple example that demonstrates how to use Blazeds for remote methods to call on the client:
// Create a remote service agent
RemoteObject remoteObject = new RemoteObject("myService");
remoteObject.setDestination("myDestination");
// Call the remote method
remoteObject.addEventListener(ResultEvent.RESULT, new EventListener() {
public void handleEvent(Event event) {
ResultEvent resultEvent = (ResultEvent) event;
Object result = resultEvent.getResult();
// Process the return result of the remote method call
}
});
remoteObject.addEventListener(FaultEvent.FAULT, new EventListener() {
public void handleEvent(Event event) {
FaultEvent faultEvent = (FaultEvent) event;
Fault fault = faultEvent.getFault();
// Process the error of the remote method call
}
});
remoteObject.call("myMethod", myParam);
in conclusion:
Blazeds is a powerful data service framework. Its implementation in the Java class library involves data serialization and derivativeization, communication protocols and network transmission, clients and server -side communication interactions.By analyzing the Blazeds core library and combined with the corresponding Java code example, we can better understand and apply the framework.
