changed to use crudrepo. removed unused files

src/main/java/com/example/demo/DemoDataSource.java

@@ -1,14 +0,0 @@
-package com.example.demo;
-
-import org.springframework.jdbc.datasource.DriverManagerDataSource;
-import org.springframework.stereotype.Component;
-import org.springframework.stereotype.Service;
-
-@Service
-public class DemoDataSource extends DriverManagerDataSource {
-
-    public DemoDataSource(){
-        super("jdbc:mysql://localhost:3306/demo1", "root", "root");
-        this.setDriverClassName("com.mysql.jdbc.Driver");
-    }
-}

src/main/java/com/example/demo/user/UserController.java

@@ -1,53 +0,0 @@
-package com.example.demo.user;
-
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.stereotype.Controller;
-import org.springframework.ui.Model;
-import org.springframework.web.bind.annotation.*;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.stream.Collector;
-import java.util.stream.Collectors;
-
-//change this to RestController
-@RestController
-@RequestMapping(path="/users")
-public class UserController {
-
-    @Autowired
-    private UserRepository repository;
-
-    //Don't need this anymore
-//    @GetMapping(path="/new")
-//    public String newUser(Model model){
-//        model.addAttribute("user", new User());
-//        return "users/new";
-//    }
-
-    // change @ModelAttribute to @RequestBody
-    @PostMapping
-    public String create(@RequestBody User user){
-        repository.save(user);
-        return "Created";
-    }
-
-    //change this to return user instead of template name
-    @RequestMapping(value="/{id}")
-    public User get(@PathVariable long id){
-        return repository.findById(id);
-    }
-
-//    change this to return list instead of template name
-    @GetMapping
-    public List<User> index(){
-        return repository.findAll();
-    }
-
-
-
-
-}

src/main/java/com/example/demo/user/UserRepository.java

@@ -1,106 +1,9 @@
 package com.example.demo.user;
 
 
-import com.example.demo.DemoDataSource;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.stereotype.Repository;
 
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.List;
-
-@Service
-public class UserRepository {
-    @Autowired
-    private DemoDataSource dataSource;
-
-    public void save(User user){
-        String sql = "INSERT INTO user (name, active) VALUES (?, ?)";
-        Connection conn = null;
-
-        try {
-            conn = dataSource.getConnection();
-            PreparedStatement ps = conn.prepareStatement(sql);
-            ps.setString(1, user.getName());
-            ps.setBoolean(2, user.isActive());
-            ps.execute();
-            ps.close();
-        } catch (SQLException e) {
-            throw new RuntimeException(e);
-        } finally {
-            if (conn != null) {
-                try {
-                    conn.close();
-                } catch (SQLException e) {}
-            }
-        }
-    }
-
-    public User findById(Long id) {
-
-        String sql = "SELECT * FROM user WHERE id = ?";
-
-        Connection conn = null;
-
-        try {
-            conn = dataSource.getConnection();
-            PreparedStatement ps = conn.prepareStatement(sql);
-            ps.setLong(1, id);
-            User user = null;
-            ResultSet resultSet = ps.executeQuery();
-            if (resultSet.next()) {
-                user = new User();
-                user.setId(resultSet.getLong("id"));
-                user.setActive(resultSet.getBoolean("active"));
-                user.setName(resultSet.getString("name"));
-
-            }
-            resultSet.close();
-            ps.close();
-            return user;
-        } catch (SQLException e) {
-            throw new RuntimeException(e);
-        } finally {
-            if (conn != null) {
-                try {
-                    conn.close();
-                } catch (SQLException e) {}
-            }
-        }
-    }
-
-    public List<User> findAll() {
-        String sql = "SELECT * FROM user";
-        List<User> users = new ArrayList<>();
-
-        Connection conn = null;
-
-        try {
-            conn = dataSource.getConnection();
-            PreparedStatement ps = conn.prepareStatement(sql);
-            ResultSet resultSet = ps.executeQuery();
-            while (resultSet.next()) {
-                User user = new User();
-                user.setId(resultSet.getLong(1));
-                user.setActive(resultSet.getBoolean(2));
-                user.setName(resultSet.getString(3));
-
-                users.add(user);
-            }
-            resultSet.close();
-            ps.close();
-        } catch (SQLException e) {
-            throw new RuntimeException(e);
-        } finally {
-            if (conn != null) {
-                try {
-                    conn.close();
-                } catch (SQLException e) {}
-            }
-        }
-        return users;
-    }
+@Repository
+public interface UserRepository extends CrudRepository<User, Long> {
 }

src/main/resources/templates/users/index.html

@@ -1,13 +0,0 @@
-<h2>Users</h2>
-
-<ul>
-<li th:each="user: ${allUsers}">
-    <a th:href="@{'/users/' + ${user.id}}">
-
-        <span th:text="${user.id}"></span>
-        <span th:text="${user.name}"></span>
-    </a>
-</li>
-</ul>
-
-<a href="/users/new">New User</a>

src/main/resources/templates/users/new.html

@@ -1,6 +0,0 @@
-<h2>New User</h2>
-
-<form action="#" th:action="@{/users}" th:object="${user}" method="post">
-    <p>Name: <input type="text" th:field="*{name}" /></p>
-    <p><input type="submit" value="Submit" /> <input type="reset" value="Reset" /></p>
-</form>

src/main/resources/templates/users/show.html

@@ -1,9 +0,0 @@
-<h2>User details</h2>
-<div>
-    <label>ID:</label><span th:text="${user.id}"></span>
-</div>
-<div>
-    <label>ID:</label><span th:text="${user.name}"></span>
-</div>
-
-<a href="/users">All Users</a>