/**
* this is the main method of the servlet that will service all get requests.
*
* @param request HttpServletRequest
* @param responce HttpServletResponce
*/
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
try {
res.setContentType("text/html");
// The following 2 lines are the difference between PingServlet and PingServletWriter
// the latter uses a PrintWriter for output versus a binary output stream.
ServletOutputStream out = res.getOutputStream();
// java.io.PrintWriter out = res.getWriter();
hitCount++;
out.println(
"<html><head><title>Ping Servlet</title></head>"
+ "<body><HR><BR><FONT size=\"+2\" color=\"#000066\">Ping Servlet<BR></FONT><FONT size=\"+1\" color=\"#000066\">Init time : "
+ initTime
+ "<BR><BR></FONT> <B>Hit Count: "
+ hitCount
+ "</B></body></html>");
} catch (Exception e) {
Log.error(e, "PingServlet.doGet(...): general exception caught");
res.sendError(500, e.toString());
}
}
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws IOException, ServletException {
res.setContentType("text/html");
java.io.PrintWriter out = res.getWriter();
// use a stringbuffer to avoid concatenation of Strings
StringBuffer output = new StringBuffer(100);
output.append(
"<html><head><title>PingServlet2MDBQueue</title></head>"
+ "<body><HR><FONT size=\"+2\" color=\"#000066\">PingServlet2MDBQueue<BR></FONT>"
+ "<FONT size=\"-1\" color=\"#000066\">"
+ "Tests the basic operation of a servlet posting a message to an EJB MDB through a JMS Queue.<BR>"
+ "<FONT color=\"red\"><B>Note:</B> Not intended for performance testing.</FONT>");
try {
if (queueConnectionFactory == null) {
queueConnectionFactory =
(ConnectionFactory) new InitialContext().lookup("ConnectionFactory");
}
Connection conn = queueConnectionFactory.createConnection();
if (tradeBrokerQueue == null) {
tradeBrokerQueue =
(Queue) new InitialContext().lookup("java:comp/env/jms/TradeBrokerQueue");
}
try {
TextMessage message = null;
int iter = TradeConfig.getPrimIterations();
for (int ii = 0; ii < iter; ii++) {
Session sess = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
try {
MessageProducer producer = sess.createProducer(tradeBrokerQueue);
message = sess.createTextMessage();
String command = "ping";
message.setStringProperty("command", command);
message.setLongProperty("publishTime", System.currentTimeMillis());
message.setText(
"Ping message for queue java:comp/env/jms/TradeBrokerQueue sent from PingServlet2MDBQueue at "
+ new java.util.Date());
producer.send(message);
} finally {
sess.close();
}
}
// write out the output
output.append("<HR>initTime: ").append(initTime);
output.append("<BR>Hit Count: ").append(hitCount++);
output.append("<HR>Posted Text message to java:comp/env/jms/TradeBrokerQueue destination");
output.append("<BR>Message: ").append(message);
output.append("<BR><BR>Message text: ").append(message.getText());
output.append("<BR><HR></FONT></BODY></HTML>");
out.println(output.toString());
} catch (Exception e) {
Log.error(
"PingServlet2MDBQueue.doGet(...):exception posting message to TradeBrokerQueue destination ");
throw e;
} finally {
conn.close();
}
} // this is where I actually handle the exceptions
catch (Exception e) {
Log.error(e, "PingServlet2MDBQueue.doGet(...): error");
res.sendError(500, "PingServlet2MDBQueue.doGet(...): error, " + e.toString());
}
}