Update MyPrepServlet.java

ticketing-master/src/com/cn/servlet/MyPrepServlet.java

@@ -19,41 +19,52 @@ import com.cn.service.impl.PrepServiceImpl;
 /**
  * 
  * @ClassName: MyPrepServlet 
- * @Description: 用户 我的订单
+ * @Description: 用户我的订单的Servlet
  * @author: ljy
  * @date: 2019年9月29日 下午3:30:45
  */
 public class MyPrepServlet extends HttpServlet {
-	private static final long serialVersionUID = 1L;
+    private static final long serialVersionUID = 1L;
        
     /**
-     * @see HttpServlet#HttpServlet()
+     * HttpServlet的构造函数。
      */
     public MyPrepServlet() {
         super();
-        // TODO Auto-generated constructor stub
+        // 构造函数中的代码，通常不需要自定义操作，因为父类已经处理
     }
 
-	/**
-	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
-	 */
-	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
-
-		Member member = (Member) request.getSession().getAttribute("member");
-		PmemberService pmemberService = new PmemberServiceImpl();
-		Pmember pmember = pmemberService.getPmemberByMemberId(member.getMemberId());
-		PrepService prepService = new PrepServiceImpl();
-		List<Prep> prepList = prepService.getPrepByPmemberId(pmember.getPmemberId());
-		if(prepList!=null && prepList.size()>0) {
-			request.setAttribute("prepList", prepList);
-		} else {
-			request.setAttribute("msg", "您没有任何订单！");
-		}
-		
-		request.getRequestDispatcher("pages/user/myCenter/right/myPrep.jsp").forward(request, response);
-		
-	}
+    /**
+     * 处理GET请求的方法。
+     * 当客户端发送GET请求时，这个方法会被调用。
+     * @param request HttpServletRequest对象，包含客户端请求信息。
+     * @param response HttpServletResponse对象，用于发送响应到客户端。
+     * @throws ServletException 可能抛出的Servlet异常。
+     * @throws IOException 可能抛出的IO异常。
+     */
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 
+        // 从Session中获取当前登录的会员对象
+        Member member = (Member) request.getSession().getAttribute("member");
+        // 创建PmemberService的实现类对象，用于访问会员相关的业务逻辑
+        PmemberService pmemberService = new PmemberServiceImpl();
+        // 根据会员ID获取Pmember对象
+        Pmember pmember = pmemberService.getPmemberByMemberId(member.getMemberId());
+        // 创建PrepService的实现类对象，用于访问订单相关的业务逻辑
+        PrepService prepService = new PrepServiceImpl();
+        // 根据PmemberID获取订单列表
+        List<Prep> prepList = prepService.getPrepByPmemberId(pmember.getPmemberId());
+        // 判断订单列表是否不为空且有订单
+        if(prepList != null && prepList.size() > 0) {
+            // 如果有订单，则将订单列表设置为request的属性，以便在JSP页面中可以访问
+            request.setAttribute("prepList", prepList);
+        } else {
+            // 如果没有订单，则设置一个消息属性，提示用户没有任何订单
+            request.setAttribute("msg", "您没有任何订单！");
+        }
         
+        // 使用RequestDispatcher将请求转发到“我的订单”的JSP页面
+        request.getRequestDispatcher("pages/user/myCenter/right/myPrep.jsp").forward(request, response);
         
+    }
 }