[EDIT]:図書貸出機能実装

src/main/java/com/example/demo/controller/BookLendController.java

@@ -1,30 +1,52 @@
 package com.example.demo.controller;
 
+import java.time.LocalDate;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 
-import com.example.demo.entity.Employee;
+import com.example.demo.service.BookLendService;
-import com.example.demo.repository.EmployeeRepository;
+import com.example.demo.service.BookServiceImpl;
+
+import lombok.RequiredArgsConstructor;
 
 @Controller
+@RequiredArgsConstructor
 public class BookLendController {
 
 	@Autowired
-	private EmployeeRepository employeeRepository;
+	private final BookServiceImpl bookServiceImpl;
+	
+	@Autowired
+	private final BookLendService bookLendService;
 
 	@PostMapping("/bookLend")
 	public String bookLend(Model model) {
 		return "bookLend";
 	}
 
-	// 社員IDを取得してプルダウンに表示させる
+	@PostMapping("/bookLend/{id}")
-	@PostMapping("/bookLend/employeeId")
+	public String bookLend(@PathVariable int id, Model model) {
-	public String selectEmployeeId(Employee employee, Model model) {
+		model.addAttribute("book", bookServiceImpl.findById(id));
-		model.addAttribute("employeeList", employeeRepository.findByEmployeeId(employee.getEmployeeId()));
-		model.addAttribute("bookLend", employee);
 		return "bookLend";
 	}
 
+	// 貸出処理
+	@PostMapping("/bookLend/confirm")
+	public String bookLendConfirm(
+			@RequestParam(name = "bookId") int bookId,
+			@RequestParam(name = "bookManageId") String bookManageId,
+			@RequestParam(name = "employeeId") int employeeId,
+			@RequestParam(name = "returnDate") LocalDate bookReturnDate,
+			Model model) {
+
+		bookLendService.save(bookId,bookManageId,employeeId,bookReturnDate);
+		
+		return "redirect:/book";
+	}
+
 }

src/main/java/com/example/demo/entity/BookLend.java

@@ -1,6 +1,6 @@
 package com.example.demo.entity;
 
-import java.sql.Date;
+import java.time.LocalDate;
 
 import jakarta.persistence.Column;
 import jakarta.persistence.Entity;
@@ -35,11 +35,11 @@ public class BookLend {
 
 	// 貸出日
 	@Column(name = "book_lend_date", nullable = false)
-	private Date bookLendDate;
+	private LocalDate bookLendDate;
 
 	// 返却日
 	@Column(name = "book_return_date", nullable = false)
-	private Date bookReturnDate;
+	private LocalDate bookReturnDate;
 
 	// 貸出状態
 	@Column(name = "book_status", nullable = false)

src/main/java/com/example/demo/form/BookLendForm.java

@@ -1,7 +1,27 @@
 package com.example.demo.form;
 
+import java.sql.Date;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+
+import com.example.demo.entity.Book;
+import com.example.demo.entity.Employee;
+
 // 図書の貸出処理に使用予定
 
 public class BookLendForm {
 	
+	private Book book;
+
+	@NotBlank(message = "社員IDの入力は必須です")
+	private Employee employeeBooklend;
+	
+	private Date bookLendDate;
+
+	@NotNull(message = "返却日の入力は必須です")
+	private Date bookReturnDate;
+	
+	private Integer bookStatus;
+
 }

src/main/java/com/example/demo/repository/BookLendRepository.java

@@ -1,5 +1,7 @@
 package com.example.demo.repository;
 
+import java.util.List;
+
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
@@ -8,4 +10,6 @@ import com.example.demo.entity.BookLend;
 @Repository
 public interface BookLendRepository extends JpaRepository<BookLend, Integer> {
 
+	List<BookLend> findBybookStatus(Integer bookStatus);
+	
 }

src/main/java/com/example/demo/service/BookLendService.java

@@ -1,12 +1,17 @@
 package com.example.demo.service;
 
+import java.time.LocalDate;
 import java.util.List;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import com.example.demo.entity.Book;
 import com.example.demo.entity.BookLend;
+import com.example.demo.entity.Employee;
 import com.example.demo.repository.BookLendRepository;
+import com.example.demo.repository.BookRepository;
+import com.example.demo.repository.EmployeeRepository;
 
 @Service
 public class BookLendService {
@@ -14,8 +19,37 @@ public class BookLendService {
 	@Autowired
 	private BookLendRepository bookLendRepository;
 	
+	@Autowired
+	private BookRepository bookRepository;
+	
+	@Autowired
+	private EmployeeRepository employeeRepository;
+
 	public List<BookLend> findAll() {
 		return bookLendRepository.findAll();
 	}
 
+	public void save(int bookId, String bookManageId, int employeeId,
+			LocalDate bookReturnDate) {
+
+		BookLend bookLend = new BookLend();
+		
+		
+		Book book = bookRepository.findById(bookId)
+		        .orElseThrow(
+		                () -> new IllegalArgumentException("対象の本が見つかりません"));
+		
+		Employee employee = employeeRepository.findById(employeeId)
+		        .orElseThrow(
+		                () -> new IllegalArgumentException("対象のが見つかりません"));
+
+		bookLend.setBook(book);
+		bookLend.setEmployeeBooklend(employee);
+		bookLend.setBookLendDate(LocalDate.now());
+		bookLend.setBookReturnDate(bookReturnDate);
+		bookLend.setBookStatus(1);
+
+		bookLendRepository.save(bookLend);
+	}
+
 }

src/main/java/com/example/demo/service/BookServiceImpl.java

@@ -1,14 +1,20 @@
 package com.example.demo.service;
 
 import java.util.List;
+import java.util.Optional;
 
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Service;
+import org.springframework.web.server.ResponseStatusException;
 
 import com.example.demo.entity.Book;
 import com.example.demo.repository.BookRepository;
 
+import lombok.RequiredArgsConstructor;
+
 @Service
+@RequiredArgsConstructor
 public class BookServiceImpl {
 
 	@Autowired
@@ -18,8 +24,18 @@ public class BookServiceImpl {
 		return bookRepository.findAll();
 	}
 
-	public List<Book> findBooks(String keyword){ 
+	public List<Book> findBooks(String keyword) {
 		return bookRepository.searchBooks(keyword);
 	}
 
+	public Book findById(int bookId) {
+		Optional<Book> book = bookRepository.findById(bookId);
+		if (book.isEmpty()) {
+			throw new ResponseStatusException(
+					HttpStatus.NOT_FOUND, "図書情報が見つかりません");
+		}
+
+		return book.get();
+	}
+
 }

src/main/java/com/example/demo/service/EmployeeService.java

@@ -0,0 +1,24 @@
+package com.example.demo.service;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import com.example.demo.entity.Employee;
+import com.example.demo.repository.EmployeeRepository;
+
+import lombok.RequiredArgsConstructor;
+
+@Service
+@RequiredArgsConstructor
+public class EmployeeService {
+
+	@Autowired
+	private EmployeeRepository employeeRepository;
+	
+	public List<Employee> findAll() {
+		return employeeRepository.findAll();
+	}
+	
+}

src/main/resources/templates/book.html

@@ -80,6 +80,7 @@
 				<tbody>
 					<tr th:each="book : ${book}" th:if="${book.bookManageId != null}">
 
+						<td th:hidden="*{book.bookId}"></td>
 						<td th:text="*{book.bookManageId}"></td>
 						<td th:text="*{book.isbn}"></td>
 						<td th:text="*{book.title}"></td>
@@ -106,8 +107,8 @@
 						
 						<td th:if="${session.loginEmployee.adminFlag == 1}">
 							
-							<form method="post" action="/bookLend">
+							<form method="post" th:action="@{/bookLend/{id}(id=${book.bookId})}">
-								<input type="hidden" name="bookManageId" th:value="*{book.bookManageId}">
+								<input type="hidden" name="id" th:value="*{book.bookId}">
 								<button type="submit"
 									th:disabled="*{book.bookLends != null && book.bookLends.bookStatus == 1}">
 									貸出

src/main/resources/templates/bookLend.html

@@ -13,181 +13,112 @@
 	</h1>
 
 	<p>
-		以下の図書を貸出します。貸出先と貸出日・返却予定日を入力してください。
+		以下の図書を貸出します。貸出先の社員IDと返却予定日を入力してください。
 	</p>
 
 	<h2>
 		図書情報
 	</h2>
 
-	<div class="card-body">
+	<form th:action="@{/bookLend/confirm}" method="POST"
-		<table class="info-table">
+			id="lendForm">
-			<tr>
-				<th>
-					図書管理ID
-				</th>
 
-				<td>
+		<div class="card-body">
-					（図書管理IDをここに表示させる）
+			<table class="info-table">
-				</td>
+				<thead>
-			</tr>
+					<tr>
+						<th>図書管理ID</th>
+						<th>図書タイトル</th>
+						<th>著者名</th>
+						<th>ISBN</th>
+					</tr>
+				</thead>
 
-			<tr>
+				<tbody>
-				<th>
+					<tr>
-					図書タイトル
+<!--						<td th:hidden="*{book.bookId}"></td>-->
-				</th>
+						<td th:text="*{book.bookManageId}"></td>
+						<td th:text="*{book.title}"></td>
+						<td th:text="*{book.author}"></td>
+						<td th:text="*{book.isbn}"></td>
+					</tr>
 
-				<td>
+				</tbody>
-					（タイトルをここに表示させる）
-				</td>
-			</tr>
 
-			<tr>
+			</table>
-				<th>
-					著者名
-				</th>
-
-				<td>
-					（著者名をここに表示させる）
-				</td>
-			</tr>
-
-			<tr>
-				<th>
-					ISBN
-				</th>
-
-				<td>
-					（ISBNをここに表示させる）
-				</td>
-			</tr>
-		</table>
-	</div>
-
-	<h2>
-		社員情報
-	</h2>
-
-	<div class="card">
-
-		<div class="form-row">
-
-			<label for="employeeSelect">
-				社員ID
-			</label>
-
-<!--			<select th:field="*{employeeId}" onchange="this.form.action='/bookLend/employeeId';this.form.submit();">-->
-
-			<select name="employeeId" id="employeeSelect">
-				
-				<option value="">
-					社員IDを選択してください
-				</option>
-
-<!--				<option th:each="employee : ${employeeList}" th:value="${employee.employeeId}">-->
-<!--				</option>-->
-
-				<option value="1">1</option>
-				<option value="2">2</option>
-				<option value="3">3</option>
-				<option value="4">4</option>
-				
-			</select>
 		</div>
 
-		<div class="form-row">
+		<h2>
-			<label for="employeeName">
+			社員情報
-				社員名
+		</h2>
-			</label>
 
-			<input type="text" id="employeeName" value="" placeholder="社員名が表示されます" readonly>
+		<div class="card">
 
-		</div>
+			<div class="form-row">
 
-	</div>
+				<label for="employeeSelect">
+					社員ID
+				</label>
 
-	<h2>
+				<input type="text" name="employeeId" placeholder="社員IDを入力してください">
-		貸出・返却日入力
-	</h2>
 
-	<div class="date-section">
+				</select>
-
-		<div class="date-box">
-
-			<label>
-				貸出日(自動取得)
-			</label>
-
-			<input type="date" id="loanDate" name="loanDate" value="">
-
-			<div class="note">
-				※ 現在の日付が自動で設定されます。
 			</div>
 
 		</div>
 
-		<div class="date-box">
+		<h2>
+			貸出・返却日入力
+		</h2>
 
-			<label>
+		<div class="date-section">
-				貸出期間日数
-			</label>
 
-			<input type="text" id="loanDays" placeholder="日数を入力してください">
+			<div class="date-box">
+
+				<label>
+					貸出日（現在の日付が自動で設定されます。)
+				</label>
+
+				<p th:text="${#calendars.format(#calendars.createNowForTimeZone('Asia/Tokyo'), 
+							'yyyy年MM月dd日')}">
+				</p>
+
+			</div>
+
+			<div class="date-box">
+
+				<label>
+					返却予定日（必ず指定してください。）
+				</label>
+
+				<input type="date" id="returnDate" name="returnDate">
+
+				<div class="note">
+					※ カレンダーから日付を選択してください。
+				</div>
+
+				<div class="error">
+					※ 現在の日付より前は選択できません。
+				</div>
 
-			<div class="note">
-				※ 数値（1以上）で入力してください。
 			</div>
 
 		</div>
 
-		<div class="date-box">
+		<h3>
-
-			<label>
-				返却予定日（必須）
-			</label>
-
-			<input type="date" id="returnDate" name="returnDate">
-
-			<div class="note">
-				※ カレンダーから日付を選択してください。
-			</div>
-
-			<div class="error">
-				※ 現在の日付より前は選択できません。
-			</div>
-
-		</div>
-
-	</div>
-
-	<div class="warning-area">
-
-		<strong>
 			注意事項
-		</strong>
+		</h3>
 
-		<ul>
+		<p>
-			<li>
+			貸出処理を行うと、対象の図書のステータスが「貸出中」に変更されます。
-				貸出処理を行うと、対象の図書のステータスが「貸出中」に変更されます。
+		</p>
-			</li>
 		
-			<li>
+		<input type="hidden" name="bookManageId" th:value="${book.bookManageId}">
-				返却予定日を必ず指定してください。
+		<input type="hidden" name="bookId" th:value="${book.bookId}">
-			</li>
-		</ul>
 
-	</div>
+		<input type="submit" name="submit" onclick="submitLend()" value="貸出する">
 
-	<form id="lendForm" action="bookLendConfirmation" method="post">
+		<input type="reset" name="reset" value="入力内容をクリア">
-		<div class="button-area">
-
-			<div class="right-buttons">
-				<button type="button" class="btn btn-primary" onclick="submitLend()">
-					貸出する
-				</button>
-			</div>
-
-		</div>
 
 	</form>
 
@@ -201,6 +132,19 @@
 			}
 		}
 
+		// カレンダーを当日以前の日付を入力できないようにする
+		const today = new Date();
+		function dateFormat(today, format) {
+			format = format.replace("YYYY", today.getFullYear());
+			format = format.replace("MM", ("0" + (today.getMonth() + 1)).slice(-2));
+			format = format.replace("DD", ("0" + today.getDate()).slice(-2));
+			return format;
+		}
+
+		const data = dateFormat(today, 'YYYY-MM-DD');
+		const field = document.getElementById('returnDate');
+		field.setAttribute("min", data);
+
 	</script>
 
 </body>