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In this PART 2, we will implement the end-to-end "List Employee Feature" in our Employee Management System project.
← Previous Next → Use the below links to navigate different parts of this tutorial:
1. Spring Boot Thymeleaf CRUD Database Real-Time Project - PART 1- Create and Setup Spring Boot Project in Eclipse STS
- Database Setup
1. Back-end changes
First, we will complete the back-end changes.
EmployeeRepository.java
Create a EmployeeRepository interface under "net.javaguides.springboot.repository" package and add the following content to it:
package net.javaguides.springboot.repository; import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.stereotype.Repository; import net.javaguides.springboot.model.Employee; @Repository public interface EmployeeRepository extends JpaRepository<Employee, Long>{ } This will provide CRUD database operations for the Employee entity.
EmployeeService.java
Create an EmployeeService interface under "net.javaguides.springboot.service" and add the following content to it:
package net.javaguides.springboot.service; import java.util.List; import net.javaguides.springboot.model.Employee; public interface EmployeeService { List<Employee> getAllEmployees(); } EmployeeServiceImpl.java
Create an EmployeeServiceImpl class under "net.javaguides.springboot.service" and add the following content to it:
package net.javaguides.springboot.service; import java.util.List; import java.util.Optional; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import net.javaguides.springboot.model.Employee; import net.javaguides.springboot.repository.EmployeeRepository; @Service public class EmployeeServiceImpl implements EmployeeService { @Autowired private EmployeeRepository employeeRepository; @Override public List < Employee > getAllEmployees() { return employeeRepository.findAll(); } } EmployeeController.java
Create an EmployeeServiceImpl class under "net.javaguides.springboot.controller" and add the following content to it:
package net.javaguides.springboot.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.GetMapping; import net.javaguides.springboot.service.EmployeeService; @Controller public class EmployeeController { @Autowired private EmployeeService employeeService; // display list of employees @GetMapping("/") public String viewHomePage(Model model) { model.addAttribute("listEmployees", employeeService.getAllEmployees()); return "index"; } } 2. Front-end changes
index.html
Create an index.html Thymeleaf template under the "resources/templates" folder and add the following content to it:
<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="ISO-8859-1"> <title>Employee Management System</title> <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous"> </head> <body> <div class="container my-2"> <h1>Employees List</h1> <table border="1" class = "table table-striped table-responsive-md"> <thead> <tr> <th>Employee First Name</th> <th>Employee Last Name</th> <th>Employee Email</th> </tr> </thead> <tbody> <tr th:each="employee : ${listEmployees}"> <td th:text="${employee.firstName}"></td> <td th:text="${employee.lastName}"></td> <td th:text="${employee.email}"></td> </tr> </tbody> </table> </div> </body> </html> 3. Run Spring application and demo
This tutorial is explained very well with the demo in below video tutorial:
Hello sir,
ReplyDeleteI have a question. In the following code,
public String viewHomePage(Model model) {
model.addAttribute("listEmployees", employeeService.getAllEmployees());
return "index";
How does spring know the file type of index if it is index.html or index.jsp?
We have added "Spring Boot Starter Thymeleaf" dependency to the pom.xml.
DeleteSpring boot auto-configures default ViewResolver for Thymeleaf so we no need to explicitly configure view resolver. If you use JSP then you should to have to configure view resolver for JSP in application.properties file.
In videos, i have explained this in-detail so watch the videos to understand more.
where is the file .It is not shared at all
DeleteWhich file you are talking about?. Can you provide a more details?
Delete