How to populate options of h:selectOneMenu from database? JAVA JSF
- The Project Structure in netbeans is shown
- Mysql Table Structure
CREATE TABLE `categories` ( `sl_no` INT(11) NOT NULL AUTO_INCREMENT, `category_name` VARCHAR(50) NOT NULL DEFAULT '0', PRIMARY KEY (`sl_no`) )
MySql Table Data
- index.xhtml
<?xml version='1.0' encoding='UTF-8' ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://xmlns.jcp.org/jsf/html" xmlns:f="http://xmlns.jcp.org/jsf/core"> <h:head> <title>Facelet Title</title> </h:head> <h:body> <h:form> Name of Student<h:inputText value="#{form_data.student_name}"></h:inputText><br></br> Category <h:selectOneMenu value="#{form_data.category}"> <f:selectItems value="#{form_data.get_category_name()}"></f:selectItems> </h:selectOneMenu><br></br> <h:commandButton value="Submit" action="success"></h:commandButton> </h:form> </h:body> </html> - success.xhtml
<?xml version='1.0' encoding='UTF-8' ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://xmlns.jcp.org/jsf/html"> <h:head> <title>Facelet Title</title> </h:head> <h:body> #{form_data.student_name}<br></br> #{form_data.category} </h:body> </html> - Form_Data.java
package com; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.util.ArrayList; import java.util.List; import javax.faces.bean.ManagedBean; import javax.faces.bean.RequestScoped; @ManagedBean(name = "form_data") @RequestScoped public class Form_Data { private String student_name; private String category; private List<String> category_list=new ArrayList<>(); public List<String> get_category_name(){ try { Connection connection=null; Class.forName("com.mysql.jdbc.Driver"); connection=DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root"); PreparedStatement ps=null; ps=connection.prepareStatement("select * from categories"); ResultSet rs=ps.executeQuery(); while(rs.next()){ category_list.add(rs.getString("category_name")); } } catch (Exception e) { System.out.println(e); } return category_list; } public Form_Data() { } public String getStudent_name() { return student_name; } public String getCategory() { return category; } public List<String> getCategory_list() { return category_list; } public void setStudent_name(String student_name) { this.student_name = student_name; } public void setCategory(String category) { this.category = category; } public void setCategory_list(List<String> category_list) { this.category_list = category_list; } } - index.xhtml
- After Submit success.xhtml
Download the project here JSF_Hibernate_loginProject_1
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