How Java implements message communication using JSMPP
JSMPP is a pure Java implemented SMPP protocol library used to build SMS sending and receiving applications. The SMPP (Short Message Peer to Peer) protocol is a standard protocol that interconnects SMS centers and external SMS entities, allowing applications to send and receive SMS messages through the SMS center.
The advantages of the JSP framework include:
1. Pure Java implementation: JSMPP is a pure Java library that can run on any platform that supports Java.
2. Easy to use: JSMPP provides a simple API for sending and receiving text messages. Developers can implement SMS communication functionality with a small amount of code.
3. Support for amplification: JSMPP can handle a large number of SMS exchanges under high load conditions.
4. Complete protocol support: JSMPP supports all core functions of the SMPP protocol, including session management, message exchange, and error handling.
The drawbacks of the JSMPP framework include:
1. Learning curve: If you are not familiar with the SMPP protocol, you may need some learning and understanding to use the JSMPP framework.
2. Powerful features: JSMPP provides many functions and options, which may be somewhat complex for simple SMS communication needs.
The following is a sample code for a Java implementation that uses the JSP framework to send and receive text messages:
1. Add Maven dependency:
<dependency>
<groupId>com.cloudhopper.smpp</groupId>
<artifactId>jsmpp</artifactId>
<version>2.3.8</version>
</dependency>
2. Example code for sending text messages:
import com.cloudhopper.smpp.*;
import com.cloudhopper.smpp.pdu.*;
import com.cloudhopper.smpp.type.*;
public class SMSClient {
private SmppSession session;
public void bind() throws SmppException {
DefaultSmppClient client = new DefaultSmppClient();
SmppSessionConfiguration config = new SmppSessionConfiguration();
config.setWindowSize(5);
config.setName("SMSClient");
config.setType(SmppBindType.TRANSCEIVER);
config.setHost("localhost");
config.setPort(2775);
config.setSystemId("smppclient1");
config.setPassword("password");
session = client.bind(config, new SmppSessionHandlerAdapter());
}
public void sendSMS(String message, String phoneNumber) throws SmppException {
SubmitSm sm = new SubmitSm();
sm.setSourceAddress(new Address((byte)0x01, (byte)0x01, "SMSC"));
sm.setDestAddress(new Address((byte)0x01, (byte)0x01, phoneNumber));
sm.setShortMessage(message.getBytes());
session.submit(sm, 10000);
}
public void unbind() throws SmppException {
if (session != null && session.isBound()) {
session.unbind(5000);
}
}
public static void main(String[] args) {
SMSClient client = new SMSClient();
try {
client.bind();
client.sendSMS("Hello, World!", "1234567890");
} catch (Exception e) {
e.printStackTrace();
} finally {
try { client.unbind(); } catch (SmppException e) { }
}
}
}
3. Example code for receiving text messages:
import com.cloudhopper.smpp.*;
import com.cloudhopper.smpp.pdu.*;
import com.cloudhopper.smpp.type.*;
public class SMSReceiver {
private SMPPServerSessionHandler sessionHandler;
public void startServer() throws SmppException {
SMPPServerSessionHandler sessionHandler = new SMPPServerSessionHandler();
SMPPServerConfiguration config = new DefaultSmppServerConfiguration();
config.setPort(2775);
SmppServer smppServer = new DefaultSmppServer(config, sessionHandler);
smppServer.start();
}
public class SMPPServerSessionHandler extends DefaultSmppServerSessionHandler {
@Override
public PduResponse firePduRequestReceived(PduRequest pduRequest) {
if (pduRequest instanceof DeliverSm) {
DeliverSm deliverSm = (DeliverSm) pduRequest;
System.out.println("Received message: " + new String(deliverSm.getShortMessage()));
}
return super.firePduRequestReceived(pduRequest);
}
}
public static void main(String[] args) {
SMSReceiver receiver = new SMSReceiver();
try {
receiver.startServer();
} catch (Exception e) {
e.printStackTrace();
}
}
}
Please note that the above code is only an example and may require appropriate changes based on your actual environment and requirements.
Official website link for the JSP framework: http://jsmpp.org/
