fix issues for order component.

Author: manyuanbin

code/backend/src/main/java/edu/bu/cs673/secondhand/controller/FavoriteController.java

@@ -36,7 +36,7 @@ public ResultVo addFavorite(@CookieValue("shUserId")
         return ResultVo.fail(ErrorMsg.FAVORITE_EXIT);
     }
 
-    @GetMapping("/delete")
+    @DeleteMapping("/delete")
     public ResultVo deleteFavorite(@CookieValue("shUserId")
                                    @NotNull(message = "Login Fail, try again")
                                    @NotEmpty(message = "Login Fail, try again") String shUserId,

code/backend/src/main/java/edu/bu/cs673/secondhand/controller/ItemController.java

@@ -145,10 +145,11 @@ public ResultVo removeItem(@CookieValue("shUserId")
     public ResultVo updateItem(@CookieValue("shUserId") 
                                 @NotNull(message = "Login fail, try again!")
                                 @NotEmpty(message = "Login fail, try again!")
-                                String userId,
+                                String shUserId,
                                 @RequestBody(required = true) IdleItem item) {
         // TODO: allow admin to update item
-        if (item.getUserId().toString().equals(userId)) {
+        item.setUserId(Long.valueOf(shUserId));
+        if (item.getUserId().toString().equals(shUserId)) {
             if(itemService.updateItem(item)) {
                 return ResultVo.success(item);
             }

code/backend/src/main/java/edu/bu/cs673/secondhand/domain/Order.java

@@ -12,6 +12,8 @@ public class Order {
 
     private Long idleId;
 
+    private IdleItem idleItem;
+
     private BigDecimal orderPrice;
 
     private Byte paymentStatus;
@@ -62,6 +64,14 @@ public BigDecimal getOrderPrice() {
         return orderPrice;
     }
 
+    public IdleItem getIdleItem() {
+        return idleItem;
+    }
+
+    public void setIdleItem(IdleItem idleItem) {
+        this.idleItem = idleItem;
+    }
+
     public void setOrderPrice(BigDecimal orderPrice) {
         this.orderPrice = orderPrice;
     }
@@ -113,10 +123,4 @@ public Byte getIsDeleted() {
     public void setIsDeleted(Byte isDeleted) {
         this.isDeleted = isDeleted;
     }
-
-    public Order getIdleItem() {
-        return null;
-    }
-
-    public void setIdleItem(IdleItem idleItem) {}
 }