Access properties of bean from request object using OGNL.
Posted on: January 27, 2011 at 12:00 AM

In this section, you will see how to access properties of bean from request object in struts.

Access properties of bean from request object using OGNL.

In this section, we will introduce you how to access beans properties from request object using OGNL expression language.

1-index.jsp

<%@page language="java" session="true" pageEncoding="ISO-8859-1"%>ADS_TO_REPLACE_1

<%@taglib uri="/struts-tags" prefix="s"%>

<html>

<head><title>Example_OGNL_Struts2</title></head>ADS_TO_REPLACE_2

<br>Select Student Name and Age....ADS_TO_REPLACE_3

<s:actionerror/>

<s:form action="ognlAction">

<s:select list="{'Bharat','Gyan','Ankit','Vinay'}"ADS_TO_REPLACE_4

label="Name" headerKey="none" headerValue="None"

name="studentname"/>

<s:textfield label="Age" name="age"></s:textfield>ADS_TO_REPLACE_5

<s:submit></s:submit>

</s:form>

</td>ADS_TO_REPLACE_6

|Accessing Bean Properties |

<table cellpadding="2" cellspacing="0" width="200">ADS_TO_REPLACE_7

<tr bgcolor="#CC66FF"> <td>Student name</td> <td>Age</td></tr><tr>

<td><s:property value="age"/></td></tr></table>ADS_TO_REPLACE_8

</td>

|Accessing Request |ADS_TO_REPLACE_9

<td>Student Name</td> <td>Age</td></tr><tr>ADS_TO_REPLACE_10

</td></tr></table></td>ADS_TO_REPLACE_11

</tr>

</table>

</body>ADS_TO_REPLACE_12

</html>

3_ OGNLOnsession.java (Action class)

package roseindia.action;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts2.interceptor.ServletRequestAware;ADS_TO_REPLACE_13

import roseindia.model.StudentDetails;

import com.opensymphony.xwork2.ActionSupport;

public class OGNLAction extends ActionSupport ADS_TO_REPLACE_14

implements ServletRequestAware {

private HttpServletRequest request;

private String studentname;ADS_TO_REPLACE_15

private int age;

public String getStudentname() {

return studentname;ADS_TO_REPLACE_16

}

public void setStudentname(String studentname) {

this.studentname = studentname;ADS_TO_REPLACE_17

}

public int getAge() {

return age;ADS_TO_REPLACE_18

}

public void setAge(int age) {

this.age = age;ADS_TO_REPLACE_19

}

public void setServletRequest(HttpServletRequest request) {

this.request = request;ADS_TO_REPLACE_20

}

public HttpServletRequest getServletRequest() {

return request;ADS_TO_REPLACE_21

}

public String execute() throws Exception {

if (studentname.equals("none")) {ADS_TO_REPLACE_22

this.addActionError("Please Select name...");

return ERROR;

}ADS_TO_REPLACE_23

StudentDetails bean = new StudentDetails();

bean.setStudentname(studentname);

bean.setAge(age);ADS_TO_REPLACE_24

request.setAttribute("bean", bean);

return SUCCESS; }

}

4_ EmployeeBean.java (Bean class)

package roseindia.model;ADS_TO_REPLACE_25

public class StudentDetails {

private String studentname;

private int age;ADS_TO_REPLACE_26

public String getStudentname() {

return studentname;

}ADS_TO_REPLACE_27

public void setStudentname(String studentname) {

this.studentname = studentname;

}ADS_TO_REPLACE_28

public int getAge() {

return age;

}ADS_TO_REPLACE_29

public void setAge(int age) {

this.age = age;

}　ADS_TO_REPLACE_30

}

5_ struts.xml

<package name="roseindia" extends="struts-default">ADS_TO_REPLACE_31

<result name="error">index.jsp</result>

<result name="success">index.jsp</result>ADS_TO_REPLACE_32

<result name="input">index.jsp</result>

</action>

</package>ADS_TO_REPLACE_33

</struts>

Output

ADS_TO_REPLACE_34

Download Source CodeADS_TO_REPLACE_35

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