How to call data from javabean to JSP
Hi all
This is my core java program.
import com.alien.enterpriseRFID.reader.*;
import com.alien.enterpriseRFID.tags.*;
import java.util.*;
publicclass AlienClass1ReaderTest{
/**
* Constructor
*/
public AlienClass1ReaderTest()throws AlienReaderException{
AlienClass1Reader reader =new AlienClass1Reader();
//reader.setConnection("COM1");
// To connect to a networked reader instead, use the following:
reader.setConnection("192.168.0.4", 23);
reader.setUsername("alien");
reader.setPassword("password");
// Open a connection to the reader
reader.open();
// Ask the reader to read tags and print them
Tag tagList[] = reader.getTagList();
if (tagList ==null){
System.out.println("No Tags Found");
}else{
System.out.println("Tag(s) found:");
for (int i=0; i<tagList.length; i++){
Tag tag = tagList[i];
System.out.println("Tag ID:" + tag.getTagID() +
", Antenna:" + tag.getAntenna() +
", Read Counts:" + tag.getRenewCount()
);
}
}
// Close the connection
reader.close();
}
/**
* Main
*/
publicstaticfinalvoid main(String args[]){
try{
AlienClass1ReaderTest test =new AlienClass1ReaderTest();
}catch(AlienReaderException e){
System.out.println("Error: " + e.toString());
}
}
}// End of class AlienClass1ReaderTest
If I run above prpgram we can see following output.
Tag(s) found:
Tag ID:8000 8005 3999 8421, Antenna:0, Read Counts:1
Tag ID:8000 8005 3999 8251, Antenna:0, Read Counts:1
Tag ID:8000 8004 3072 5236, Antenna:0, Read Counts:10
Tag ID:8000 8004 3072 5266, Antenna:0, Read Counts:10
Now I just converted above program in Java Bean so that I can call from JSP.
Following is javabean
package RFIDReaders.ALR9800;
import com.alien.enterpriseRFID.reader.*;
import com.alien.enterpriseRFID.tags.*;
import java.util.*;
publicclass ALR9800Reader{
//Connection Parameters.
private String IP;
private String portStr;
private String log;
private String pass;
//Getter and Setter mthod for TAG
private String tagID;
privateint antenna;
privateint renewCount;
privateint no_of_tag;
AlienClass1Reader reader =new AlienClass1Reader();
/**
* Constructor
*/
public ALR9800Reader(){
}
// Set IP Address of the Reader
publicvoid setIP(String IP){
this.IP = IP;
}
// Set Port # of the Reader
publicvoid setPortStr(String portStr){
this.portStr = portStr;
}
// Set Login of the Reader
publicvoid setLog(String log){
this.log = log;
}
// Set Password of the Reader
publicvoid setPass(String pass){
this.pass = pass;
}
// Connect Alien Reader
publicvoid ConnectALR9800(String IP, String portStr, String log, String pass)throws AlienReaderException{
int port = Integer.parseInt(portStr);
reader.setConnection(IP, port);
reader.setUsername(log);
reader.setPassword(pass);
// Open a connection to the reader
reader.open();
}
// Getter and Setter Method for TagID
publicvoid setTagID(String tagID){
this.tagID = tagID;
}
public String getTagID(){
return tagID;
}
// Getter and Setter Method for Antenna
publicvoid setAntenna(int antenna){
this.antenna = antenna;
}
publicint getAntenna(){
return antenna;
}
//// Getter and Setter Method for Read Count
publicvoid setRenewCount(int renewCount){
this.renewCount = renewCount;
}
publicint getRenewCount(){
return renewCount;
}
publicint getNo_of_tag(){
return no_of_tag;
}
// Getting Tag ID
publicvoid ReaderData()throws AlienReaderException{
// Ask the reader to read tags and print them
Tag tagList[] = reader.getTagList();
for (no_of_tag =0; no_of_tag ><tagList.length; no_of_tag++){
Tag tag = tagList[no_of_tag];
tagID = tag.getTagID();
antenna = tag.getAntenna();
renewCount = tag.getRenewCount();
}
}
// Closing Alien Reader connection
publicvoid CloseALR9800()throws AlienReaderException{
reader.close();
}
}
Now I am using following JSP to call
><%@ page language="java" %>
<%@ page import="java.util.*"%>
<jsp:useBean id="readerALR9800" class="RFIDReaders.ALR9800.ALR9800Reader" scope="session"/>
<jsp:setProperty name="readerALR9800" property="*"/>
<jsp:include page="sendALR9800.jsp" />
<% readerALR9800.ReaderData(); %>
<html>
<head>
</head>
<body>
<hr><table border=1 cellspacing=2 cellpadding=1>
<tr>
<th>S No</th>
<th>TAG ID</th>
<th>Antenna #</th>
<th>READ COUNT</th>
</tr>
<%
// Getting tag data from reader
int n = readerALR9800.getNo_of_tag();
for(int i = 0; i < n; i++){
out.println("<tr><td>"+ (i+1) +"</td>");
out.println("<td>" + readerALR9800.getTagID()+"</td>");
out.println("<td>" + readerALR9800.getAntenna()+"</td>");
out.println("<td>" + readerALR9800.getRenewCount()+"</td>");
out.println("</tr>");
}
%>
</table>
</body>
</html>
when I call from JSP we can see the following output which is only one data repeating four times but it should print four values as I got when I run my core java program.
S No TAG ID Antenna # READ COUNT
1 8000 8004 3072 5266 0 10
2 8000 8004 3072 5266 0 10
3 8000 8004 3072 5266 0 10
4 8000 8004 3072 5266 0 10
Could anybody help me where I am making mistakes?
Thanx
kvijai
