In this example you will learn how to set and get the value of Java object properties that you define in a JSP pages. For this example, let’s first start by creating a variable that we named customer, that will have a type of Customer class. To create this variable we use the <jsp:useBean> action.
After we create the customer variable we can set the property value of the customer bean using the <jsp:setProperty> action. And to get the property value of the customer bean we use the <jsp:getProperty> action.
The name attribute in the setProperty and getProperty action refer to our customer bean. The property attribute tells which property we are going to set or get. To set the value of a property we use the value attribute.
<%@ page contentType="text/html;charset=UTF-8" %>
<!DOCTYPE html>
<html lang="en">
<head>
<title>JSP - Bean Property Demo</title>
</head>
<body>
<jsp:useBean id="customer" class="org.kodejava.servlet.support.Customer"/>
<jsp:setProperty name="customer" property="id" value="1"/>
<jsp:setProperty name="customer" property="firstName" value="John"/>
<jsp:setProperty name="customer" property="lastName" value="Doe"/>
<jsp:setProperty name="customer" property="address" value="Sunset Road"/>
Customer Information: <%= customer %><br/>
Customer Name: <jsp:getProperty name="customer" property="firstName"/>
<jsp:getProperty name="customer" property="lastName"/>
</body>
</html>
And here is the code for our Customer bean. This bean contains property such as the id, firstName, lastName and address.
package org.kodejava.servlet.support;
public class Customer {
private int id;
private String firstName;
private String lastName;
private String address;
public Customer() {
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
@Override
public String toString() {
return "Customer{" +
"id=" + id +
", firstName='" + firstName + '\'' +
", lastName='" + lastName + '\'' +
", address='" + address + '\'' +
'}';
}
}
We access the JSP page we will see the following output:
Customer Information: Customer{id=1, firstName='John', lastName='Doe', address='Sunset Road'}
Customer Name: John Doe
JSP Bean Property Demo
