库存信息修改功能

src/view/GoodsManagementView.java

@@ -11,6 +11,7 @@ import model.Goods;
 
 import java.sql.Connection;
 import java.sql.DriverManager;
+import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.Statement;
 import java.time.LocalDateTime;
@@ -145,19 +146,16 @@ public class GoodsManagementView extends BorderPane {
         String url = "jdbc:sqlite:db/dbuml.db3";
         List<Goods> goodsList = new ArrayList<>();
         try (Connection conn = DriverManager.getConnection(url)) {
-            String sql = "SELECT id, goods_id as name, quantity, " +
-                        "supplier, inbound_time, operator, remark " +
-                        "FROM warehouse " +
-                        "ORDER BY id";  // 不再使用GROUP BY，直接显示所有记录
+            String sql = "SELECT * FROM warehouse ORDER BY inbound_time DESC";
             try (Statement stmt = conn.createStatement();
                  ResultSet rs = stmt.executeQuery(sql)) {
 
                 while (rs.next()) {
                     Goods goods = new Goods(
-                            rs.getString("id"),
-                            rs.getString("name"),
-                            rs.getInt("quantity"),
-                            rs.getString("remark")
+                        rs.getString("id"),
+                        rs.getString("goods_id"),
+                        rs.getInt("quantity"),
+                        rs.getString("remark")
                     );
                     goods.setInboundTime(LocalDateTime.parse(rs.getString("inbound_time")));
                     goods.setOperator(rs.getString("operator"));
@@ -198,33 +196,41 @@ public class GoodsManagementView extends BorderPane {
                 return;
             }
 
-            // 查找货物对象
-            Goods existingGoods = DataManager.getInstance().getGoods(id);
-            if (existingGoods == null) {
-                // 插入新货物
-                Goods newGoods = new Goods(String.format("NO%014d", System.currentTimeMillis()), 
-                        name, quantity, remark);
-                newGoods.setInboundTime(LocalDateTime.now());
-                newGoods.setOperator("当前用户");
-                newGoods.setSupplier(supplier);
-                DataManager.getInstance().addGoodsToDatabase(newGoods);
-            } else {
-                // 更新现有货物
-                existingGoods.setName(name);
-                existingGoods.setQuantity(quantity);
-                existingGoods.setSupplier(supplier);
-                existingGoods.setRemark(remark);
-                DataManager.getInstance().updateGoodsInDatabase(existingGoods);
+            // 检查是否存在该记录
+            String url = "jdbc:sqlite:db/dbuml.db3";
+            try (Connection conn = DriverManager.getConnection(url)) {
+                String checkSql = "SELECT * FROM warehouse WHERE id = ?";
+                try (PreparedStatement pstmt = conn.prepareStatement(checkSql)) {
+                    pstmt.setString(1, id);
+                    ResultSet rs = pstmt.executeQuery();
+                    
+                    if (rs.next()) {
+                        // 记录存在，执行更新操作
+                        String updateSql = "UPDATE warehouse SET goods_id = ?, quantity = ?, " +
+                                         "supplier = ?, remark = ? WHERE id = ?";
+                        try (PreparedStatement updateStmt = conn.prepareStatement(updateSql)) {
+                            updateStmt.setString(1, name);
+                            updateStmt.setInt(2, quantity);
+                            updateStmt.setString(3, supplier);
+                            updateStmt.setString(4, remark);
+                            updateStmt.setString(5, id);
+                            
+                            updateStmt.executeUpdate();
+                            showAlert("成功", "货物信息已更新！");
+                        }
+                    } else {
+                        showAlert("错误", "未找到指定ID的货物记录！");
+                        return;
+                    }
+                }
             }
 
-            // 更新表格
+            // 更新表格显示
             loadGoodsData();
 
             // 清空输入
             handleClear();
 
-            showAlert("成功", "货物信息已更新！");
-
         } catch (Exception e) {
             showAlert("错误", "保存失败：" + e.getMessage());
             e.printStackTrace();