5

.idea/dataSources.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DataSourceManagerImpl" format="xml" multifile-model="true">
+    <data-source source="LOCAL" name="java@192.168.0.10" uuid="e1b7329a-5d4a-4e4d-b764-a1cee101f03b">
+      <driver-ref>postgresql</driver-ref>
+      <synchronize>true</synchronize>
+      <jdbc-driver>org.postgresql.Driver</jdbc-driver>
+      <jdbc-url>jdbc:postgresql://192.168.0.10:5432/java</jdbc-url>
+      <jdbc-additional-properties>
+        <property name="com.intellij.clouds.kubernetes.db.enabled" value="false" />
+      </jdbc-additional-properties>
+      <working-dir>$ProjectFileDir$</working-dir>
+    </data-source>
+  </component>
+</project>

.idea/misc.xml

@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
   <component name="MavenProjectsManager">

.idea/sqldialects.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="SqlDialectMappings">
+    <file url="file://$PROJECT_DIR$/src/main/java/org/example/dao/PersonDAO.java" dialect="PostgreSQL" />
+  </component>
+</project>

pom.xml

@@ -64,6 +64,27 @@
       <scope>compile</scope>
     </dependency>
 
+    <dependency>
+      <groupId>org.hibernate.validator</groupId>
+      <artifactId>hibernate-validator</artifactId>
+      <version>6.1.6.Final</version>
+    </dependency>
+
+    <!-- https://mvnrepository.com/artifact/org.postgresql/postgresql -->
+    <dependency>
+      <groupId>org.postgresql</groupId>
+      <artifactId>postgresql</artifactId>
+      <version>42.7.1</version>
+    </dependency>
+
+
+    <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
+    <dependency>
+      <groupId>org.springframework</groupId>
+      <artifactId>spring-jdbc</artifactId>
+      <version>5.3.31</version>
+    </dependency>
+
   </dependencies>
   <build>
     <finalName>MyMVC</finalName>

src/main/java/org/example/config/MySpringMvcDispatcherSerlvetIntitializer.java

@@ -0,0 +1,36 @@
+package org.example.config;
+
+import org.springframework.web.filter.HiddenHttpMethodFilter;
+import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+
+
+public class MySpringMvcDispatcherSerlvetIntitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
+    @Override
+    protected Class<?>[] getRootConfigClasses() {
+        return null;
+    }
+
+    @Override
+    protected Class<?>[] getServletConfigClasses() {
+        return new Class[]{SpringConfig.class};
+    }
+
+    @Override
+    protected String[] getServletMappings() {
+        return new String[]{"/"};
+    }
+
+    @Override
+    public void onStartup(ServletContext aServletContext) throws ServletException {
+        super.onStartup(aServletContext);
+        registerHiddenFieldFilter(aServletContext);
+    }
+
+    private void registerHiddenFieldFilter(ServletContext aContext) {
+        aContext.addFilter("hiddenHttpMethodFilter",
+                new HiddenHttpMethodFilter()).addMappingForUrlPatterns(null ,true, "/*");
+    }
+}

src/main/java/org/example/config/MySpringServletInit.java

@@ -1,21 +0,0 @@
-package org.example.config;
-
-import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
-
-public class MySpringServletInit extends AbstractAnnotationConfigDispatcherServletInitializer {
-
-    @Override
-    protected Class<?>[] getRootConfigClasses() {
-        return null;
-    }
-
-    @Override
-    protected Class<?>[] getServletConfigClasses() {
-        return new Class[] {SpringConfig.class};
-    }
-
-    @Override
-    protected String[] getServletMappings() {
-        return new String[] {"/"};
-    }
-}

src/main/java/org/example/config/SpringConfig.java

@@ -5,13 +5,20 @@ import org.springframework.context.ApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.datasource.DriverManagerDataSource;
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
 import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 import org.thymeleaf.spring5.SpringTemplateEngine;
 import org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver;
 import org.thymeleaf.spring5.view.ThymeleafViewResolver;
+import javax.sql.DataSource;
+import java.sql.DriverManager;
 
+/**
+ * @author Neil Alishev
+ */
 @Configuration
 @ComponentScan("org.example")
 @EnableWebMvc
@@ -47,4 +54,19 @@ public class SpringConfig implements WebMvcConfigurer {
         resolver.setTemplateEngine(templateEngine());
         registry.viewResolver(resolver);
     }
+
+    @Bean
+    public DataSource dataSource(){
+        DriverManagerDataSource dataSource = new DriverManagerDataSource();
+        dataSource.setDriverClassName("org.postgresql.Driver");
+        dataSource.setUrl("jdbc:postgresql://192.168.0.10:5432/java");
+        dataSource.setUsername("sanders");
+        dataSource.setPassword("sanders");
+        return dataSource;
+    }
+
+    @Bean
+    public JdbcTemplate jdbcTemplate() {
+        return new JdbcTemplate(dataSource());
+    }
 }

src/main/java/org/example/controllers/FirstController.java

@@ -1,23 +0,0 @@
-package org.example.controllers;
-
-import org.springframework.stereotype.Controller;
-import org.springframework.ui.Model;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestParam;
-
-import javax.servlet.http.HttpServletRequest;
-
-@Controller
-public class FirstController {
-    @GetMapping("/Hello")
-    public String helloPage(@RequestParam(value = "name") String name, Model model){
-
-        model.addAttribute("message",name);
-        System.out.println(name);
-        return "first/hello";
-    }
-    @GetMapping("/goodbye")
-    public String goobyePage(){
-        return "first/goodbye";
-    }
-}

src/main/java/org/example/controllers/PeopleController.java

@@ -5,8 +5,11 @@ import org.example.models.Person;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
+import org.springframework.validation.BindingResult;
 import org.springframework.web.bind.annotation.*;
 
+import javax.validation.Valid;
+
 @Controller
 @RequestMapping("/people")
 public class PeopleController {
@@ -35,8 +38,28 @@ public class PeopleController {
     }
 
     @PostMapping()
-    public String create(@ModelAttribute("person") Person person){
+    public String create(@ModelAttribute("person") @Valid Person person
+            , BindingResult bindingResult) {
+        if (bindingResult.hasErrors())
+            return "people/new";
+
         personDAO.save(person);
         return "redirect:people";
     }
+
+    @GetMapping("/{id}/edit")
+    public String edit(@PathVariable("id") int id, Model model) {
+        model.addAttribute("person",personDAO.show(id));
+        return "people/edit";
+    }
+
+    @PatchMapping("/{id}")
+    public String update(@ModelAttribute("person") @Valid Person person, BindingResult bindingResult, @PathVariable("id") int id) {
+
+        if (bindingResult.hasErrors())
+            return "people/edit";
+
+        personDAO.update( id,person);
+        return "redirect:/people";
+    }
 }

src/main/java/org/example/dao/PersonDAO.java

@@ -1,30 +1,56 @@
 package org.example.dao;
 
 import org.example.models.Person;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.jdbc.core.BeanPropertyRowMapper;
+import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.stereotype.Component;
 
+import java.sql.*;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.stream.Collectors;
 
+/**
+ * @author Neil Alishev
+ */
 @Component
 public class PersonDAO {
-    private final List<Person> people = new ArrayList<Person>();
-    {
-        people.add(new Person("MAO",1));
-        people.add(new Person("Sanders", people.size()+1));
+
+    private final JdbcTemplate jdbcTemplate;
+
+    @Autowired
+    public PersonDAO(JdbcTemplate jdbcTemplate) {
+        this.jdbcTemplate = jdbcTemplate;
     }
 
     public List<Person> index() {
-        return people;
+        return jdbcTemplate.query("SELECT * FROM Person" , new BeanPropertyRowMapper<>(Person.class));
     }
 
     public Person show(int id) {
-        return people.stream().filter(person -> person.getId() == id).findAny().orElse(null);
+//        return people.stream().filter(person -> person.getId() == id).findAny().orElse(null);
+        return jdbcTemplate.query("SELECT * FROM Person where id = ?" , new Object[]{id}, new BeanPropertyRowMapper<>(Person.class))
+                .stream()
+                .findAny()
+                .orElse(null);
+
     }
 
     public void save(Person person) {
-        person.setId(people.size()+1);
-        people.add(person);
+        jdbcTemplate.update("Insert into person VALUES (1,?,?,?)"
+                            , person.getName(),person.getAge(),person.getEmail()
+        );
+
+
+    }
+
+    public void update(int id, Person person) {
+        jdbcTemplate.update("update person set name = ?, age = ?, email = ? where id = ?"
+                ,person.getName(),person.getAge(),person.getEmail(),person.getId()
+        );
+    }
+
+    public void delete(int id) {
+//        people.removeIf(p -> p.getId() == id);
     }
 }

src/main/java/org/example/models/Person.java

@@ -5,11 +5,27 @@ import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
 
+import javax.validation.constraints.Email;
+import javax.validation.constraints.Min;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.Size;
+
+
 @Getter@Setter
 @AllArgsConstructor
 @NoArgsConstructor
 public class Person
 {
+    @NotEmpty(message = "Name should not be empty")
+    @Size(min = 2, max = 30, message = "Name should be between 2 and 30 characters")
     private String name;
+
     private int id;
+    @Min(value = 0, message = "Age should be greater than 0")
+    private int age;
+
+    @NotEmpty(message = "Email should not be empty")
+    @Email(message = "Email should be valid")
+    private String email;
+
 }

src/main/webapp/WEB-INF/views/first/goodbye.html

@@ -1,15 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-
-<head>
-    <meta charset="ISO-8859-1">
-    <title>My app</title>
-</head>
-
-<body>
-
-<p>Hello world!</p>
-
-</body>
-
-</html>

src/main/webapp/WEB-INF/views/first/hello.html

@@ -1,17 +0,0 @@
-<!DOCTYPE html>
-<html xmlns:th="http://www.thymeleaf.org" lang="en">
-
-<head>
-    <meta charset="ISO-8859-1">
-    <title>My app</title>
-</head>
-
-<body>
-
-<p>Hello world!</p>
-
-<p th:text="${message}"></p>
-
-</body>
-
-</html>

src/main/webapp/WEB-INF/views/people/edit.html

@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org" lang="en">
+<head>
+    <meta charset="ISO-8859-1">
+    <title>Edit</title>
+</head>
+<body>
+
+<form th:method="PATCH" th:action="@{/people/{id}(id=${person.getId()})}" th:object="${person}">
+    <label for="name">Enter name: </label>
+    <input type="text" th:field="*{name}" id="name"/>
+    <div style="color:red" th:if="${#fields.hasErrors('name')}" th:errors="*{name}">Name Error</div>
+    <br/>
+    <label for="age">Enter age: </label>
+    <input type="text" th:field="*{age}" id="age"/>
+    <div style="color:red" th:if="${#fields.hasErrors('age')}" th:errors="*{age}">Age Error</div>
+    <br/>
+    <label for="email">Enter email: </label>
+    <input type="text" th:field="*{email}" id="email"/>
+    <div style="color:red" th:if="${#fields.hasErrors('email')}" th:errors="*{email}">Email Error</div>
+    <br/>
+    <input type="submit" value="Update!"/>
+</form>
+
+</body>
+</html>

src/main/webapp/WEB-INF/views/people/index.html

@@ -10,12 +10,15 @@
 
 <p>Hello world!</p>
 
-
 <div th:each="person : ${people}">
-    <a th:href="@{/people/{id}(id=${person.getId()})}" th:text="${person.getName()}">user</a>
+    <a th:href="@{/people/{id}(id=${person.getId()})}"
+       th:text="${person.getName() + ', ' + person.getAge()}">user</a>
 </div>
 
 
+
+<a href="/people/new">Create new person</a>
+
 </body>
 
 </html>

src/main/webapp/WEB-INF/views/people/new.html

@@ -9,6 +9,15 @@
 <form th:method="POST" th:action="@{/people}" th:object="${person}">
     <label for="name">Enter name: </label>
     <input type="text" th:field="*{name}" id="name"/>
+    <div style="color:red" th:if="${#fields.hasErrors('name')}" th:errors="*{name}">Name Error</div>
+    <br/>
+    <label for="age">Enter age: </label>
+    <input type="text" th:field="*{age}" id="age"/>
+    <div style="color:red" th:if="${#fields.hasErrors('age')}" th:errors="*{age}">Age Error</div>
+    <br/>
+    <label for="email">Enter email: </label>
+    <input type="text" th:field="*{email}" id="email"/>
+    <div style="color:red" th:if="${#fields.hasErrors('email')}" th:errors="*{email}">Email Error</div>
     <br/>
     <input type="submit" value="Create!"/>
 </form>

src/main/webapp/WEB-INF/views/people/show.html

@@ -6,7 +6,11 @@
     <title>Person</title>
 </head>
 <body>
-<p th:text="${person.getId()}"> </p>
-<p th:text="${person.getName()}"> </p>
+<p th:text="${person.getName() + ', ' + person.getAge()}">VALUE</p>
+<p th:text="${'Email: ' + person.getEmail()}">VALUE</p>
+<p th:text="${person.getId()}">VALUE</p>
+
+<a th:href="@{/people/{id}/edit(id=${person.getId()})}">Edit</a>
+
 </body>
 </html>