[ADD] セッションチェックAOPを追加しました。

src/main/java/com/example/demo/aop/aspect/SessionCheck.java

@@ -0,0 +1,11 @@
+package com.example.demo.aop.aspect;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.METHOD)
+public @interface SessionCheck {
+}

src/main/java/com/example/demo/aop/aspect/SessionCheckAspect.java

@@ -0,0 +1,41 @@
+package com.example.demo.aop.aspect;
+
+
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpSession;
+
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.annotation.Before;
+import org.aspectj.lang.annotation.Pointcut;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import com.example.demo.exception.NoSessionException;
+
+
+@Aspect
+@Component
+public class SessionCheckAspect {
+
+	HttpServletRequest request;
+
+	@Autowired
+	public SessionCheckAspect(HttpServletRequest request) {
+		this.request = request;
+	}
+
+	@Pointcut("@annotation(com.example.demo.aop.aspect.SessionCheck)")
+	public void sessionCheckMethod() {
+	}
+
+	@Before("sessionCheckMethod()")
+	public void checkSession() {
+		HttpSession session = request.getSession(false);
+
+		if (session == null || session.getAttribute("loginUser") == null) {
+			throw new NoSessionException("不正なログインです");
+		}
+
+	}
+
+}