Using beans, please help me clarify
Please, anyone know how beans work in JSP? i mean i m trying to use a bean but its properties are not initialized within the jsp page that calls it, what i have is some method inside the bean that when i call it it initializes all of the properties... for example lets say i have bean called TestBean.java, and inside of it i have 2 properties private String test1, test2; Then i have the method called
public class TestBean {
private String test1, test2
public TestBean (){
test1 = "";
test2 = "";
}
public void init(String s) {
test1 = s; test2 = s;
}
...
now in my jsp application i got <jsp:useBean id="testing" class="TestBean" scope="session"> </jsp:useBean>
<% testing.init("some string"); %>
... <%= testing.getTest1() /*returns blank value instead of a string "some string" */ %>
///now when i try and access the bean properties all i get is blank string that was initialized by constructor... why doesnt the 'init(String)' method initialize all my properties? Thanks in advance
Ok so here is my code and I haven抰 got a slightest idea how come I cant initialize these guys, database and other aspects all work fine since I did other apps with this?br>
PersonalInfoBean.java
-
import java.util.*;
import java.sql.*;
public class PersonalInfoBean {
//private String ssn
private String fname;
private String lname;
private String street;
private String aptNumber;
private String city;
private String state;
private String zipcode;
private String dayPhone;
private String nightPhone;
private Hashtable errors;
public PersonalInfoBean(){
//ssn = "";
fname = "test1";
lname = "test2";
street = "test3";
aptNumber = "";
city = "";
state = "";
zipcode = "";
dayPhone = "";
nightPhone = "";
}
//public void setSsn(String s){
//ssn = s;
//}
public void setFname(String name1) {
fname = name1;
}
public void setLname(String name2) {
lname = name2;
}
public void setStreet(String st){
street = st;
}
public void setAptNumber(String apt){
aptNumber = apt;
}
public void setCity(String c){
city = c;
}
public void setState(String s){
state = s;
}
public void setZipcode(String z){
zipcode = z;
}
public void setDayPhone(String day){
dayPhone = day;
}
public void setNightPhone(String night){
nightPhone = night;
}
//public String getSsn(){
//return ssn;
//}
public String getFname(){
return fname;
}
public String getLname(){
return lname;
}
public String getStreet(){
return street;
}
public String getAptNumber(){
return aptNumber;
}
public String getCity(){
return city;
}
public String getState(){
return state;
}
public String getZipcode(){
return zipcode;
}
public String getDayPhone(){
return dayPhone;
}
public String getNightPhone(){
return nightPhone;
}
public void existingUser(String ssn) {
try{
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/library",
"access", "granted");
Statement stmt = conn.createStatement();
ResultSet rs;
rs = stmt.executeQuery("SELECT * FROM client WHERE ssn LIKE " + ssn + 搾?;
fname = rs.getString("Fname");
lname = rs.getString("Lname");
rs = stmt.executeQuery("SELECT * FROM address WHERE ssn LIKE '" + ssn + "'");
setStreet(rs.getString("street"));
setAptNumber(rs.getString("aptNumber"));
setCity(rs.getString("City"));
setState(rs.getString("State"));
setZipcode(rs.getInt("Zipcode") + "");
rs = stmt.executeQuery("SELECT * FROM phonenumber WHERE ssn LIKE '" + ssn + "'");
setDayPhone(rs.getString("DayPhone"));
setNightPhone(rs.getString("EveningPhone"));
}
catch (Exception e){
e.getMessage();
}
}
}
info.jsp
<%@ page import="java.util.*" %>
<html>
<head></head>
<jsp:useBean id="privateInfo" class="PersonalInfoBean" scope="session">
</jsp:useBean>
<% String SSN = (String)session.getAttribute("SSN"); %>
<% privateInfo.existingUser(SSN); %>
<body> Your personal Information:
<table cellpadding=2 cellspacing=2 border=1>
<tr>
<td><b>First Name</b> <jsp:getProperty name="privateInfo" property="fname"/> </td>
<td><b>Last Name</b> <jsp:getProperty name="privateInfo" property="lname"/> </td>
</tr>
<tr>
<td><b>Street</b> <jsp:getProperty name="privateInfo" property="street"/> </td>
<td><b>Apartment</b> <jsp:getProperty name="privateInfo" property="aptNumber"/> </td>
</tr>
<tr>
<td><b>City</b> <jsp:getProperty name="privateInfo" property="city"/> </td>
<td><b>State</b> <jsp:getProperty name="privateInfo" property="state"/> </td>
<td><b>Zipcode</b> <jsp:getProperty name="privateInfo" property="zipcode"/> </td>
</tr>
<tr>
<td><b>Day Phone</b> <jsp:getProperty name="privateInfo" property="dayPhone"/> </td>
<td><b>Evening Phone</b> <jsp:getProperty name="privateInfo" property="nightPhone"/> </td>
</tr>
</table>
</body>
</html>
