uml/src/model/Goods.java

package model;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

public class Goods {
    private String id;
    private String name;
    private String specification;
    private String unit;
    private double price;
    private String category;
    private int quantity;
    private String remark;
    private LocalDateTime inboundTime;
    private String operator;
    private String supplier;

    public Goods(String id, String name, String specification, String unit, double price, String category) {
        this.id = id;
        this.name = name;
        this.specification = specification;
        this.unit = unit;
        this.price = price;
        this.category = category;
        this.quantity = 0;
        this.remark = "";
        this.inboundTime = null;
        this.operator = "";
        this.supplier = "";
    }

    public Goods(String id, String name, String specification, String unit, double price, String category, int quantity, String remark) {
        this.id = id;
        this.name = name;
        this.specification = specification;
        this.unit = unit;
        this.price = price;
        this.category = category;
        this.quantity = quantity;
        this.remark = remark;
        this.inboundTime = null;
        this.operator = "";
        this.supplier = "";
    }

    public Goods(String id, String goodsName, int quantity, String remark) {
        this.id = id;
        this.name = goodsName;
        this.quantity = quantity;
        this.remark = remark;
        this.inboundTime = null;
        this.operator = "";
        this.supplier = "";
    }

    public static void insertIntoDatabase(Connection conn, Goods goods) throws SQLException {
        String sql = "INSERT INTO goods (id, name, specification, unit, price, category, quantity, remark, inbound_time, operator, supplier) " +
                "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
            try {
                pstmt.setString(1, goods.getId());
            } catch (SQLException e) {
                throw new RuntimeException(e);
            }
            pstmt.setString(2, goods.getName());
            pstmt.setString(3, goods.getSpecification());
            pstmt.setString(4, goods.getUnit());
            pstmt.setDouble(5, goods.getPrice());
            pstmt.setString(6, goods.getCategory());
            pstmt.setInt(7, goods.getQuantity());
            pstmt.setString(8, goods.getRemark());
            pstmt.setString(9, goods.getInboundTime() != null ? goods.getInboundTime().format(DateTimeFormatter.ISO_LOCAL_DATE_TIME) : null);
            pstmt.setString(10, goods.getOperator());
            pstmt.setString(11, goods.getSupplier());
            pstmt.executeUpdate();
        }
    }

    public static void updateInDatabase(Connection conn, Goods goods) throws SQLException {
        String sql = "UPDATE goods SET name = ?, specification = ?, unit = ?, price = ?, category = ?, " +
                "quantity = ?, remark = ?, inbound_time = ?, operator = ?, supplier = ? WHERE id = ?";
        try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
            pstmt.setString(1, goods.getName());
            pstmt.setString(2, goods.getSpecification());
            pstmt.setString(3, goods.getUnit());
            pstmt.setDouble(4, goods.getPrice());
            pstmt.setString(5, goods.getCategory());
            pstmt.setInt(6, goods.getQuantity());
            pstmt.setString(7, goods.getRemark());
            pstmt.setString(8, goods.getInboundTime() != null ? goods.getInboundTime().format(DateTimeFormatter.ISO_LOCAL_DATE_TIME) : null);
            pstmt.setString(9, goods.getOperator());
            pstmt.setString(10, goods.getSupplier());
            pstmt.setString(11, goods.getId());
            pstmt.executeUpdate();
        }
    }

    // Getters and Setters
    public String getId() { return id; }
    public void setId(String id) { this.id = id; }
    public String getName() { return name; }
    public void setName(String name) { this.name = name; }
    public String getSpecification() { return specification; }
    public void setSpecification(String specification) { this.specification = specification; }
    public String getUnit() { return unit; }
    public void setUnit(String unit) { this.unit = unit; }
    public double getPrice() { return price; }
    public void setPrice(double price) { this.price = price; }
    public String getCategory() { return category; }
    public void setCategory(String category) { this.category = category; }
    public int getQuantity() { return quantity; }
    public void setQuantity(int quantity) { this.quantity = quantity; }
    public String getRemark() { return remark; }
    public void setRemark(String remark) { this.remark = remark; }
    public LocalDateTime getInboundTime() { return inboundTime; }
    public void setInboundTime(LocalDateTime inboundTime) { this.inboundTime = inboundTime; }
    public String getOperator() { return operator; }
    public void setOperator(String operator) { this.operator = operator; }
    public String getSupplier() { return supplier; }
    public void setSupplier(String supplier) { this.supplier = supplier; }
}