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Spring/Spring Basic

Spring : Web MVC + Hibernate with XML Config - Add

Korean Eagle 2020. 5. 11. 14:43
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1. 지난 Spring Web + Hibernate의 연속 포스팅이다.

 

2. 고객을 추가하는 모듈이다.

  2-1 우선 고객을 추가하는 form을 제공하는 jsp를 생성한다.

  2-2 form을 보여주는 Controller mapping 메소드를 작성한다.

  2-3 CustomerDAO에 데이터베이스 Customer 저장 메소드를 만든다.

  2-4 ServiceDAO에 Customer를 저장하는 서비스 메소드를 만든다.

  2-5 입력된 form을 처리하는 Controller 메소드를 만든다.

 

3. 고객 추가를 위한 form을 제공하는 jsp 소스

  3-1 bootstrap 때문에 쓸대 없이 복잡해 보이지만 중요한 부분은 form:form 같은 form validation처리이다.

  3-2 일반적인 form 입력 jsp이다.

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link rel="stylesheet"
  href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
  integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh"
  crossorigin="anonymous">
<link rel="stylesheet" href="${pageContext.request.contextPath}/resources/css/sytle.css"/>
<title>Add Customer</title>
</head>
<body>
  <div class="container">
    <h2 class="mb-3 mt-5">CRM - Customer Relationship Manager</h2>
    <h3>Save Customer</h3>
    <form:form modelAttribute="customer" method="POST" action="saveCustomer">
      <div class="form-group">
        <label for="firstname">First Name:</label>
        <form:input class="form-control" path="firstName" id="firstname"/>
      </div>
      <div class="form-group">
        <label for="lastname">Last Name:</label>
        <form:input class="form-control" path="lastName" id="lastname"/>
      </div>
      <div class="form-group">
        <label for="email">Email:</label>
        <form:input class="form-control" path="email" id="email"/>
      </div>
      <button type="submit" class="btn btn-secondary">Save</button>
    </form:form>
    <p class="lead mt-4">
      <a href="${ pageContext.request.contextPath }/customer/list">Back To List</a>
    </p>
  </div>
  <script src="https://code.jquery.com/jquery-3.4.1.slim.min.js"
    integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n"
    crossorigin="anonymous"></script>
  <script
    src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"
    integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo"
    crossorigin="anonymous"></script>
  <script
    src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"
    integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6"
    crossorigin="anonymous"></script>
</body>
</html>

4. Controller에서 form을 보여주는 메소드와 form을 처리하는 메소드 소스

  4-0 form을 보여주는 메소드 showAddCutomerForm과 결과를 처리하는 saveCustomer 메소드이다.

  4-1 입력을 처리한 후 /customer/list로 redirect하여 결과를 보여준다.

@Controller
@RequestMapping("/customer")
public class CustomerController {
  
  @Autowired
  private CustomerService customerService;
  
  @GetMapping("/list")
  public String listCustomers(Model model) {
    
    model.addAttribute("customers", this.customerService.getCustomers());
    
    return "list-customers";
  }
  
  @GetMapping("/showAddCustomerForm")
  public String showAddCustomerForm(Model model) {
    model.addAttribute("customer", new Customer());
    
    return "customer-form";
  }
  
  @PostMapping("/saveCustomer")
  public String saveCustomer(@ModelAttribute Customer customer) {
    
    this.customerService.saveCustomer(customer);
    return "redirect:/customer/list";
  }
}

5. 저장 기능을 추가한 CustomerDAO 인터페이스와 구현 클래스

public interface CustomerDAO {
  List<Customer> getCustomers();
  void saveCustomer(Customer customer);
}


@Repository
public class CustomerDAOImpl implements CustomerDAO {

  @Autowired
  private SessionFactory sessionFactory;

  @Override
  public List<Customer> getCustomers() {
    Session session = this.sessionFactory.getCurrentSession();

    return session.createQuery("from Customer order by firstName", Customer.class).getResultList();
  }

  @Override
  public void saveCustomer(Customer customer) {
    Session session = this.sessionFactory.getCurrentSession();
    
    session.save(customer);
  }
}

6. 저장 기능을 추가한 CustomerService 인터페이스와 구현 클래스

package pe.pilseong.hibernateweb.service;

import java.util.List;

import pe.pilseong.hibernateweb.entity.Customer;

public interface CustomerService {
  List<Customer> getCustomers();
  void saveCustomer(Customer customer);
}


package pe.pilseong.hibernateweb.service;

import java.util.List;

import javax.transaction.Transactional;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import pe.pilseong.hibernateweb.dao.CustomerDAO;
import pe.pilseong.hibernateweb.entity.Customer;

@Service
public class CustomerServiceImpl implements CustomerService {

  @Autowired
  private CustomerDAO customerDAO;
  
  @Override
  @Transactional
  public List<Customer> getCustomers() {
    return this.customerDAO.getCustomers();
  }

  @Override
  @Transactional
  public void saveCustomer(Customer customer) {
    this.customerDAO.saveCustomer(customer);
  }
}

 

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