XML

1<?xml version="1.0" encoding="UTF-8"?>
2<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
4	<modelVersion>4.0.0</modelVersion>
5	<parent>
6		<groupId>org.springframework.boot</groupId>
7		<artifactId>spring-boot-starter-parent</artifactId>
8		<version>3.1.5</version>
9		<relativePath/> <!-- lookup parent from repository -->
10	</parent>
11	<groupId>com.haddley</groupId>
12	<artifactId>springdatajpa</artifactId>
13	<version>0.0.1-SNAPSHOT</version>
14	<name>springdatajpa</name>
15	<description>Demo project for Spring Boot</description>
16	<properties>
17		<java.version>17</java.version>
18	</properties>
19	<dependencies>
20		<dependency>
21			<groupId>org.springframework.boot</groupId>
22			<artifactId>spring-boot-starter-data-jpa</artifactId>
23		</dependency>
24		<dependency>
25			<groupId>org.springframework.boot</groupId>
26			<artifactId>spring-boot-starter-validation</artifactId>
27		</dependency>
28		<dependency>
29			<groupId>org.springframework.boot</groupId>
30			<artifactId>spring-boot-starter-web</artifactId>
31		</dependency>
32
33		<dependency>
34			<groupId>org.springframework.boot</groupId>
35			<artifactId>spring-boot-devtools</artifactId>
36			<scope>runtime</scope>
37			<optional>true</optional>
38		</dependency>
39		<dependency>
40			<groupId>com.h2database</groupId>
41			<artifactId>h2</artifactId>
42			<scope>runtime</scope>
43		</dependency>
44		<dependency>
45			<groupId>org.projectlombok</groupId>
46			<artifactId>lombok</artifactId>
47			<optional>true</optional>
48		</dependency>
49		<dependency>
50			<groupId>org.springframework.boot</groupId>
51			<artifactId>spring-boot-starter-test</artifactId>
52			<scope>test</scope>
53		</dependency>
54
55		<dependency>
56			<groupId>org.springframework.boot</groupId>
57			<artifactId>spring-boot-starter-thymeleaf</artifactId>
58		</dependency>
59
60		<!-- https://mvnrepository.com/artifact/org.webjars/bootstrap -->
61		<dependency>
62			<groupId>org.webjars</groupId>
63			<artifactId>bootstrap</artifactId>
64			<version>3.4.1</version>
65		</dependency>
66		<!-- https://mvnrepository.com/artifact/org.webjars/jquery -->
67		<dependency>
68			<groupId>org.webjars</groupId>
69			<artifactId>jquery</artifactId>
70			<version>3.6.0</version>
71		</dependency>
72
73	</dependencies>
74
75	<build>
76		<plugins>
77			<plugin>
78				<groupId>org.springframework.boot</groupId>
79				<artifactId>spring-boot-maven-plugin</artifactId>
80				<configuration>
81					<excludes>
82						<exclude>
83							<groupId>org.projectlombok</groupId>
84							<artifactId>lombok</artifactId>
85						</exclude>
86					</excludes>
87				</configuration>
88			</plugin>
89		</plugins>
90	</build>
91
92</project>

JAVA

1package com.haddley.springdatajpa;
2
3import org.springframework.boot.SpringApplication;
4import org.springframework.boot.autoconfigure.SpringBootApplication;
5
6import org.springframework.web.bind.annotation.GetMapping;
7import org.springframework.web.bind.annotation.RequestParam;
8import org.springframework.web.bind.annotation.RestController;
9import org.springframework.stereotype.Controller;
10
11import com.haddley.springdatajpa.models.TodoItem;
12import com.haddley.springdatajpa.repositories.TodoItemRepository;
13import org.springframework.beans.factory.annotation.Autowired;
14
15import java.util.stream.StreamSupport;
16import java.util.stream.Collectors;
17
18import org.springframework.web.servlet.ModelAndView;
19import org.springframework.ui.Model;
20import java.time.ZoneId;
21import java.time.Instant;
22
23import org.slf4j.Logger;
24import org.slf4j.LoggerFactory;
25
26import org.springframework.web.bind.annotation.PathVariable;
27
28@SpringBootApplication
29@Controller
30public class SpringdatajpaApplication {
31
32    private final Logger logger = LoggerFactory.getLogger(SpringdatajpaApplication.class);
33
34    public static void main(String[] args) {
35      SpringApplication.run(SpringdatajpaApplication.class, args);
36    }
37
38    @Autowired
39    private TodoItemRepository todoItemRepository;
40    
41    @GetMapping("/")
42    public ModelAndView index() {
43        logger.info("request to GET index");
44        ModelAndView modelAndView = new ModelAndView("index");
45        modelAndView.addObject("todoItems", todoItemRepository.findAll());
46        modelAndView.addObject("today", Instant.now().atZone(ZoneId.systemDefault()).toLocalDate().getDayOfWeek());
47        return modelAndView;
48    }
49
50    @GetMapping("/delete/{id}")
51    public String deleteTodoItem(@PathVariable("id") long id, Model model) {
52        TodoItem todoItem = todoItemRepository
53        .findById(id)
54        .orElseThrow(() -> new IllegalArgumentException("TodoItem id: " + id + " not found"));
55    
56        todoItemRepository.delete(todoItem);
57        return "redirect:/";
58    }
59
60
61}