Ôn thực hành EJB

On Thuc Thanh EJBCMB Create Enterprise Application chọn J2EE 1.4 Chú ý: - Cấu hình CMB: trước tiên delete tất cả kết nối đến database - URL: jdbc:sqlserver://localhost:1433;databaseName

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On Thuc Thanh EJB

CMB

Create Enterprise Application (chọn J2EE 1.4)

Chú ý:

- Cấu hình CMB: trước tiên delete tất cả kết nối đến database

- URL: jdbc:sqlserver://localhost:1433;databaseName=DEAE

- File: JDBCSQL.RAR phải bỏ vào sun=>lib

- Start sun server

- Vào source packages add databaseName và đăng kí microsoft_sqlPool && .sun-resource lên sun server

- Khóa ngoại trong table thì cũng phải có khóa

- New Timestamp(2011-1900,5,6,0,0,0,0) nếu search theo ngày thì tháng -1

Cách sử dụng StringTokenizer để cắt chuổi

String myCd = req.getParameter("CD");

StringTokenizer t = new StringTokenizer(myCd, "|");

String album = t.nextToken();

String artist = t.nextToken();

String country = t.nextToken();

Cách select dữ liệu từ 3 bảng

SalesLocalHome slh = this.lookupSalesBean();

Collection clSales;

Iterator it;

SalesLocal sl;

ProductsLocal pl;

CustomersLocal cl;

try {

clSales = slh.findByAllSales();

it = clSales.iterator();

while (it.hasNext()) {

sl = (SalesLocal)it.next();

pl = (ProductsLocal)sl.getProductsBean();

cl = (CustomersLocal)sl.getCustomersBean();

}

} catch (FinderException ex) {

ex.printStackTrace();

}

Code Count Customer

CustDetailsLocalHome cus=this.lookupCustDetailsBean2();

try

{

CustDetailsLocal cuslocal;

Collection c=cus.findByAll();

Iterator iter=c.iterator();

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int i=0;

while(iter.hasNext())

{

cuslocal=(CustDetailsLocal)iter.next();

i++;

}

out.println("Total customer: "+i);

}catch (Exception ex){}

out.close();

Code Login

CustDetailsLocalHome cus =this.lookupCustDetailsBean1(); String id=request.getParameter("id");

String name=request.getParameter("name");

try

{

CustDetailsLocal cuslocal;

Collection c=cus.findByLogin(id,name);

Iterator iter=c.iterator();

out.println(c.size());

if(c.size()>0)

{

cuslocal=(CustDetailsLocal)iter.next();

String cusid= cuslocal.getCustID();

String cusname=cuslocal.getName();

if(cusid.equals(id)&&cusname.equals(name))

{

response.sendRedirect("loginsuccess.jsp");

}

else

{

response.sendRedirect("error.jsp");

}

else

{

response.sendRedirect("error.jsp");

}

}catch(Exception ex){}

out.close();

Cách Bất JavaScript form nút button onClick=”ruturn Dn_()”

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Create class khai báo thuộc tính

public class CD {

private String CUS;

private String IDCD;

private Double price;

public String getCUS() {

return CUS;

}

public void setCUS(String CUS) { this.CUS = CUS;

}

public String getIDCD() {

return IDCD;

}

public void setIDCD(String IDCD) { this.IDCD = IDCD;

}

public Double getPrice() {

return price;

}

public void setPrice(Double price) { this.price = price;

}

Page Order

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<form action="EventOrder" method="get">

<%

String id=request.getParameter("ID");

if(id!=null)

{

%>

<input type="hidden" name="action" value="ADD"> Code CD: <label><%=id%></label><br>

<input type="hidden" value="<%=id%>" name="idDV" /> <%

}

%>

Price: <input type="text" name="price"/><br>

<input type="submit" value="Order" />

</form>

Code add sản phẩm vào cart

protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {

HttpSession session = req.getSession(false);

if (session == null) {

res.sendRedirect("error.html");

}

Vector buylist = (Vector) session.getAttribute("shoppingcart"); String action = req.getParameter("action");

if (action.equals("ADD")) {

boolean match = false;

CD aCD = getCD(req);

if (buylist == null) {

buylist = new Vector();

buylist.addElement(aCD);

} else {

buylist.addElement(aCD);

}

session.setAttribute("shoppingcart", buylist);

String url=res.encodeRedirectURL("Cart.jsp");

res.sendRedirect(url);

}

private CD getCD(HttpServletRequest req) {

String iddv = req.getParameter("idDV");

String price = req.getParameter("price");

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CD cd = new CD();

cd.setIDCD(iddv);

cd.setPrice((new Double(price)));

return cd;

}

Display cart

<%@ page session="true" import="java.util.*, mypackage.*" %>

<%

Vector buylist = (Vector) session.getAttribute("shoppingcart");

if (buylist != null && (buylist.size() >0)) {

%>

</form>

<tr>

<td><b>Identity</b></td>

<td><b>PRICE</b></td>

<td><b>Remove</b></td>

</tr>

<%

for (int index=0; index< buylist.size();index++) {

CD anOrder = (CD) buylist.elementAt(index);

%>

<tr>

<td>

</form>

</td>

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<% }%>

</table>

</form>

</center>

<% }else

{

%>

<h2 align="center">No items in cart</h2>

<%

}

%>

Page Payment

<%@ page session="true" import="java.util.*, mypackage.*" %>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>JSP Page</title>

</head>

<body>

<%

String erro=request.getParameter("erro");

if(erro!=null)

{

out.println("<h4>"+erro+"</h4>");

}

%>

<h1>Bill</h1>

<%

Vector buylist = (Vector) session.getAttribute("shoppingcart");

if (buylist != null && (buylist.size() >0)) {

%>

<%

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double total=0;

for (int index=0; index< buylist.size();index++) {

CD anOrder = (CD) buylist.elementAt(index);

total=total+anOrder.getPrice();

%>

Code CD : <label><%=anOrder.getIDCD()%></label>

Price : <label><%=anOrder.getPrice()%></label><br>

<% }%>

Total Money: <label><%=total %></label>

<% }%>

<form action="CreatebillDB" method="post" >

Input Code Customer:<input type="text" name="makh" />

<input type="submit" value="Confirm" />

</form>

</body>

</html>

Add sản phẩm vào bảng booking in database(code sử lý)

BookingDetailsLocalHome bill=this.lookupBookingDetailsBean();

try{

HttpSession session = request.getSession(false);

if (session == null) {

response.sendRedirect("error.html");

}

Vector buylist = (Vector) session.getAttribute("shoppingcart");

if (buylist != null && (buylist.size() >0))

{

String kh=request.getParameter("makh");

for (int index=0; index< buylist.size();index++)

{

// Random rand=new Random();

CD anOrder = (CD) buylist.elementAt(index);

String iddv=anOrder.getIDCD();

Double price=anOrder.getPrice();

bill.create((i+1),kh,price,new Timestamp(2011-1900,5-1,6,0,0,0,0)); }

}

System.out.println("ok!");

}catch (Exception ex){}

out.close();

BMP

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Create driver =>chuột phải vào database chọn new connection =>tạo kết nôi đến database giống CMP

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JMS Resources => Connection Factories=>new

Destination resources= new

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QUEUE >add gói thư viện imqjmx.jar

SendQueueMessage

import javax.jms.*;

public class SendQueueMessage {

public static void main(String args[]) {

try {

//declare all the local variables QueueConnectionFactory queueConnectionFactory = null;

Queue queue = null;

QueueConnection queueConnection = null;

QueueSession queueSession = null;

QueueSender queueSender = null;

TextMessage message = null;

//lookup for connectionfactory queueConnectionFactory = new com.sun.messaging.QueueConnectionFactory();

//lookup for the destination queue queue = new com.sun.messaging.Queue("sampleQueue");

//create a connection queueConnection = queueConnectionFactory.createQueueConnection();

//create a session queueSession = queueConnection.createQueueSession(false,

Session.AUTO_ACKNOWLEDGE);

//create a sender queueSender = queueSession.createSender(queue);

//create a message message = queueSession.createTextMessage();

message.setText("This is a test message!");

//send the message queueSender.send(message);

//close the connection queueConnection.close();

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System.out.println("Message has been sent to the MQ");

} catch(JMSException e) {

System.out.println(e);

} }

}

ReceiveQueueMessage

import javax.jms.*;

public class ReceiveQueueMessage {

try {

//declare all the local variables QueueConnectionFactory queueConnectionFactory = null;

Queue queue = null;

QueueReceiver queueReceiver = null;

//create a receiver queueReceiver = queueSession.createReceiver(queue);

//start the connection queueConnection.start();

//wait for a message message = (TextMessage) queueReceiver.receive();

System.out.println("Received message : "+ message.getText());

//close the connection queueConnection.close();

} }

}

ReceiveQueueMessage2

import java.io.*;

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import javax.jms.*;

public class ReceiveQueueMessage2 {

try {

//declare all the local variables

QueueConnectionFactory queueConnectionFactory = null;

Queue queue = null;

QueueReceiver queueReceiver = null;

TextListener listener = null;

//create a receiver queueReceiver = queueSession.createReceiver(queue);

//register the listener

listener = new TextListener();

queueReceiver.setMessageListener(listener);

queueConnection.start();

//wait for user input to terminate

InputStreamReader console = new InputStreamReader(System.in);

char ans = (char)console.read();

if(ans == 'q' || ans == 'Q')

queueConnection.close();

}

catch(JMSException e) {

}

catch(IOException e) {

}

class TextListener implements MessageListener {

public void onMessage(Message msg) {

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TextMessage message = (TextMessage) msg;

System.out.println("Message Received : "+ message.getText());

} catch(JMSException j){

System.out.println("Exception:"+j.toString());

} }

}

Topic

PublishTopicMessage

import javax.jms.*;

public class PublishTopicMessage {

public static void main(String[] args) {

try {

//declare all local variables TopicConnectionFactory topicConnectionFactory = null;

Topic topic = null;

TopicConnection topicConnection = null;

TopicSession topicSession = null;

TopicPublisher topicPublisher = null;

//lookup for connectionfactory topicConnectionFactory = new com.sun.messaging.TopicConnectionFactory();

//lookup for the destination queue topic = new com.sun.messaging.Topic("sampleTopic");

//create a connection topicConnection = topicConnectionFactory.createTopicConnection();

//create a session topicSession = topicConnection.createTopicSession(false,

//create a publisher topicPublisher = topicSession.createPublisher(topic);

//create a message message = topicSession.createTextMessage();

message.setText("This is a test message!");

//publish the message topicPublisher.publish(message);

//close the connection topicConnection.close();

} catch (JMSException e) {

} }

}

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import javax.jms.*;

public class SubscribeTopicMessage {

public static void main(String[] args) {

try {

//declare all local variables TopicConnectionFactory topicConnectionFactory = null;

Topic topic = null;

TopicConnection topicConnection = null;

TopicSession topicSession = null;

TopicSubscriber topicSubscriber = null;

TextListener listener = null;

//lookup for connectionfactory topicConnectionFactory = new com.sun.messaging.TopicConnectionFactory();

//lookup for the destination queue topic = new com.sun.messaging.Topic("sampleTopic");

//create a connection topicConnection = topicConnectionFactory.createTopicConnection(); //create a session

topicSession = topicConnection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);

//create a subscriber topicSubscriber = topicSession.createSubscriber(topic);

//create a listener listener = new TextListener();

//register the listener topicSubscriber.setMessageListener(listener);

topicConnection.start();

//wait for user input to terminate InputStreamReader console = new InputStreamReader(System.in); char ans = (char)console.read();

if(ans == 'q' || ans == 'Q')

topicConnection.close();

} catch(IOException e) {

} }

}

class TextListener implements MessageListener {

public void onMessage(Message msg) {

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