「ADD]図書一覧から更新入力への遷移と、図書更新確認から図書一覧への遷移を追加しました。

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

@@ -0,0 +1,13 @@
+package com.example.demo.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PostMapping;
+
+@Controller
+public class BookUpdateConfirmController {
+	
+	@PostMapping("/updateconfirm")
+	public String updateConfirm() {
+		return "updateconfirm";
+	}
+}

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

@@ -0,0 +1,19 @@
+package com.example.demo.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PostMapping;
+
+@Controller
+public class BookUpdateController {
+
+	@PostMapping("/update")
+	public String update() {
+		return "update";
+	}
+	
+	@PostMapping("/bookUpdate")
+	public String bookUpdate() {
+		return "book";
+	}
+	
+}

src/main/resources/templates/book.html

@@ -14,5 +14,12 @@
 	                    </button>
 	                </form>
 					
+					<form method="post" action="update">
+						<button type="submit" class="btn-login">
+						  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M15 3h4a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2h-4"/><polyline points="10 17 15 12 10 7"/><line x1="15" y1="12" x2="3" y2="12"/></svg>
+								  更新
+						   </button>
+					</form>
+
 </body>
 </html>

src/main/resources/templates/update.html

@@ -5,6 +5,13 @@
 <title>図書情報更新入力</title>
 </head>
 <body>
+	更新入力画面
 	
+	<form method="post" action="updateconfirm">
+		<button type="submit" class="btn-login">
+			 <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M15 3h4a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2h-4"/><polyline points="10 17 15 12 10 7"/><line x1="15" y1="12" x2="3" y2="12"/></svg>
+				  更新内容確認
+		 </button>
+	</form>
 </body>
 </html>

src/main/resources/templates/updateConfirm.html

@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="UTF-8">
+<title>更新内容確認</title>
+</head>
+<body>
+更新内容確認画面
+
+      <form method="post" action="update">
+		   <button type="submit" class="btn-login">
+               <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M15 3h4a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2h-4"/><polyline points="10 17 15 12 10 7"/><line x1="15" y1="12" x2="3" y2="12"/></svg>
+				    戻る
+		   </button>
+	  </form>
+	  
+	  <form method="post" action="bookUpdate">
+	  	   <button type="submit" class="btn-login">
+	                <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M15 3h4a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2h-4"/><polyline points="10 17 15 12 10 7"/><line x1="15" y1="12" x2="3" y2="12"/></svg>
+	  			    更新完了
+	  	   </button>
+	    </form>
+</body>
+</html>