build.gradle

@@ -29,6 +29,8 @@ dependencies {
     compile("org.springframework.boot:spring-boot-starter-web")
     compile("org.springframework.boot:spring-boot-starter-thymeleaf")
     compile("org.springframework.boot:spring-boot-devtools")
+    compile("org.springframework.boot:spring-boot-starter-data-jpa")
+    compile("com.h2database:h2")
     testCompile("junit:junit")
 }
 

src/main/java/email/EmailController.java

@@ -1,6 +1,8 @@
 package email;
 
+import email.model.Email;
 import email.model.EmailForm;
+import email.service.EmailService;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -9,6 +11,11 @@ import org.springframework.web.bind.annotation.PostMapping;
 
 @Controller
 public class EmailController {
+    private final EmailService emailService;
+
+    public EmailController(EmailService emailService) {
+        this.emailService = emailService;
+    }
 
     @GetMapping("/")
     public String indexForm(Model model) {
@@ -22,7 +29,14 @@ public class EmailController {
             model.addAttribute("error", "'Кому' не должно быть пустым");
             return "index";
         }
-        return "result";
+        emailService.save(new Email(emailForm.getTo(), emailForm.getSubject(), emailForm.getMessage()));
+        model.addAttribute("emails", emailService.getAllEmails());
+        return "list";
     }
 
+    @GetMapping("/list")
+    public String list(Model model) {
+        model.addAttribute("emails", emailService.getAllEmails());
+        return "list";
+    }
 }

src/main/java/email/core/BaseEntity.java

@@ -0,0 +1,83 @@
+package email.core;
+
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.MappedSuperclass;
+import javax.persistence.Version;
+import javax.validation.constraints.NotNull;
+import java.io.Serializable;
+
+@MappedSuperclass
+public abstract class BaseEntity implements Serializable, Comparable<BaseEntity> {
+    @Id
+    @GeneratedValue(strategy = GenerationType.TABLE)
+    private Integer id;
+
+    @Version
+    private Integer version;
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public Integer getVersion() {
+        return version;
+    }
+
+    public void setVersion(Integer version) {
+        this.version = version;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (!getClass().isAssignableFrom(obj.getClass())) {
+            return false;
+        }
+        BaseEntity other = (BaseEntity) obj;
+        if (id == null) {
+            if (other.id != null) {
+                return false;
+            }
+        } else if (!id.equals(other.id)) {
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + (id == null ? 0 : id.hashCode());
+        return result;
+    }
+
+    @Override
+    public String toString() {
+        return getClass().getSimpleName() + "{" +
+                "id=" + id +
+                ", version=" + version +
+                '}';
+    }
+
+    @Override
+    public int compareTo(@NotNull BaseEntity o) {
+        return id != null ? id.compareTo(o.getId()) : -1;
+    }
+
+    public void reset() {
+        this.id = null;
+        this.version = null;
+    }
+}

src/main/java/email/model/Email.java

@@ -0,0 +1,46 @@
+package email.model;
+
+import email.core.BaseEntity;
+
+import javax.persistence.Entity;
+
+@Entity
+public class Email extends BaseEntity {
+    private String to;
+    private String subject;
+    private String message;
+
+    public Email() {
+
+    }
+
+    public Email(String to, String subject, String message) {
+        this.to = to;
+        this.subject = subject;
+        this.message = message;
+    }
+
+    public String getTo() {
+        return to;
+    }
+
+    public void setTo(String to) {
+        this.to = to;
+    }
+
+    public String getSubject() {
+        return subject;
+    }
+
+    public void setSubject(String subject) {
+        this.subject = subject;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+}

src/main/java/email/repository/EmailRepository.java

@@ -0,0 +1,10 @@
+package email.repository;
+
+import email.model.Email;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface EmailRepository extends JpaRepository<Email, Integer> {
+}
+

src/main/java/email/service/EmailService.java

@@ -0,0 +1,33 @@
+package email.service;
+
+import email.model.Email;
+import email.repository.EmailRepository;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class EmailService {
+    private final EmailRepository emailRepository;
+
+    public EmailService(EmailRepository emailRepository) {
+        this.emailRepository = emailRepository;
+    }
+
+    public List<Email> getAllEmails() {
+        return emailRepository.findAll();
+    }
+
+    public Email save(Email email) {
+        return emailRepository.save(email);
+    }
+
+    public Email getEmailById(Integer id) {
+        return emailRepository.getOne(id);
+    }
+
+    public void delete(Integer setId) {
+        emailRepository.deleteById(setId);
+    }
+
+}

src/main/resources/application.properties

@@ -0,0 +1,14 @@
+# Server Settings
+spring.main.banner-mode=off
+server.port=8080
+# Log settings (TRACE, DEBUG, INFO, WARN, ERROR, FATAL, OFF)
+logging.level.ru.ulstu=DEBUG
+#JPA
+# go to  http://localhost:8080/h2-console
+spring.datasource.url=jdbc:h2:file:./data/emails
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+spring.h2.console.enabled=true
+spring.jpa.hibernate.ddl-auto=update

src/main/resources/templates/list.html

@@ -0,0 +1,42 @@
+<!DOCTYPE HTML>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <title>Список записей в БД</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
+    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"
+          integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" crossorigin="anonymous">
+
+    <!-- Optional theme -->
+    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap-theme.min.css"
+          integrity="sha384-6pzBo3FDv/PJ8r2KRkGHifhEocL+1X2rVCTTkUfGk7/0pbek5mMa1upzvWbrUbOZ" crossorigin="anonymous">
+
+    <!-- Latest compiled and minified JavaScript -->
+    <script src="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"
+            integrity="sha384-aJ21OjlMXNL5UyIl/XNwTMqvzeRMZH2w8c5cRVpzpU8Y5bApTppSuUkhZXN0VxHd"
+            crossorigin="anonymous"></script>
+</head>
+<body>
+<h1>Список записей в БД:</h1>
+<table class="table table-striped">
+    <thead class="thead-dark">
+    <tr>
+        <th scope="col">Кому</th>
+        <th scope="col">Тема</th>
+        <th scope="col">Сообщение</th>
+    </tr>
+    </thead>
+    <tbody>
+    <tr th:each="email: ${emails}">
+        <td th:text="${email.to}">
+        </td>
+        <td th:text="${email.subject}">
+        </td>
+        <td th:text="${email.message}">
+        </td>
+    </tr>
+    </tbody>
+</table>
+
+<a href="/">Отправить другое сообщение</a>
+</body>
+</html>