帮我写一个javaee 收货地址

好的，以下是一个简单的JavaEE收货地址示例：

首先，我们需要一个实体类来表示收货地址：

public class Address {
    private String recipientName; // 收件人姓名
    private String addressLine1; // 地址第一行
    private String addressLine2; // 地址第二行
    private String city; // 城市
    private String state; // 州/省份/地区
    private String zipCode; // 邮政编码
    private String country; // 国家

    // 省略 getter 和 setter 方法
}

接下来，我们需要一个DAO类来处理数据库中的地址数据：

public class AddressDAO {
    private Connection conn;

    public AddressDAO() throws SQLException {
        // 创建数据库连接
        conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb", "username", "password");
    }

    public void addAddress(Address address) throws SQLException {
        // 向数据库中添加收货地址
        PreparedStatement ps = conn.prepareStatement("INSERT INTO addresses (recipient_name, address_line1, address_line2, city, state, zip_code, country) VALUES (?, ?, ?, ?, ?, ?, ?)");
        ps.setString(1, address.getRecipientName());
        ps.setString(2, address.getAddressLine1());
        ps.setString(3, address.getAddressLine2());
        ps.setString(4, address.getCity());
        ps.setString(5, address.getState());
        ps.setString(6, address.getZipCode());
        ps.setString(7, address.getCountry());
        ps.executeUpdate();
    }

    public List<Address> getAllAddresses() throws SQLException {
        // 从数据库中获取所有收货地址
        List<Address> addresses = new ArrayList<>();
        Statement stmt = conn.createStatement();
        ResultSet rs = stmt.executeQuery("SELECT * FROM addresses");
        while (rs.next()) {
            Address address = new Address();
            address.setRecipientName(rs.getString("recipient_name"));
            address.setAddressLine1(rs.getString("address_line1"));
            address.setAddressLine2(rs.getString("address_line2"));
            address.setCity(rs.getString("city"));
            address.setState(rs.getString("state"));
            address.setZipCode(rs.getString("zip_code"));
            address.setCountry(rs.getString("country"));
            addresses.add(address);
        }
        return addresses;
    }

    // 省略其他常见的 DAO 方法，例如更新地址、删除地址等
}

最后，我们需要一个Servlet来处理HTTP请求，并将数据传递给DAO类：

@WebServlet("/addresses")
public class AddressServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        try {
            AddressDAO dao = new AddressDAO();
            List<Address> addresses = dao.getAllAddresses();
            request.setAttribute("addresses", addresses); // 将地址列表传递给JSP页面
            request.getRequestDispatcher("addresses.jsp").forward(request, response); // 转发到JSP页面
        } catch (SQLException e) {
            throw new ServletException("Error getting addresses from database", e);
        }
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String recipientName = request.getParameter("recipientName");
        String addressLine1 = request.getParameter("addressLine1");
        String addressLine2 = request.getParameter("addressLine2");
        String city = request.getParameter("city");
        String state = request.getParameter("state");
        String zipCode = request.getParameter("zipCode");
        String country = request.getParameter("country");

        Address address = new Address();
        address.setRecipientName(recipientName);
        address.setAddressLine1(addressLine1);
        address.setAddressLine2(addressLine2);
        address.setCity(city);
        address.setState(state);
        address.setZipCode(zipCode);
        address.setCountry(country);

        try {
            AddressDAO dao = new AddressDAO();
            dao.addAddress(address);
            response.sendRedirect("addresses"); // 重定向到地址列表页面
        } catch (SQLException e) {
            throw new ServletException("Error adding address to database", e);
        }
    }
}

最后，我们需要一个JSP页面来显示地址列表和收集新地址：

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Addresses</title>
</head>
<body>
    <h1>Addresses</h1>
    <table>
        <tr>
            <th>Recipient Name</th>
            <th>Address Line 1</th>
            <th>Address Line 2</th>
            <th>City</th>
            <th>State</th>
            <th>Zip Code</th>
            <th>Country</th>
        </tr>
        <c:forEach items="${addresses}" var="address">
            <tr>
                <td>${address.recipientName}</td>
                <td>${address.addressLine1}</td>
                <td>${address.addressLine2}</td>
                <td>${address.city}</td>
                <td>${address.state}</td>
                <td>${address.zipCode}</td>
                <td>${address.country}</td>
            </tr>
        </c:forEach>
    </table>
    <h2>Add an Address</h2>
    <form method="post" action="addresses">
        <label>Recipient Name:</label>
        <input type="text" name="recipientName"><br>
        <label>Address Line 1:</label>
        <input type="text" name="addressLine1"><br>
        <label>Address Line 2:</label>
        <input type="text" name="addressLine2"><br>
        <label>City:</label>
        <input type="text" name="city"><br>
        <label>State:</label>
        <input type="text" name="state"><br>
        <label>Zip Code:</label>
        <input type="text" name="zipCode"><br>
        <label>Country:</label>
        <input type="text" name="country"><br>
        <input type="submit" value="Add Address">
    </form>
</body>
</html>

这个例子中，我们使用了JDBC连接到MySQL数据库，并使用Servlet和JSP处理HTTP请求和响应。当用户访问地址列表页面时，我们从数据库中获取所有地址并将它们传递给JSP页面进行显示。当用户提交新地址时，我们将其添加到数据库中并重定向到地址列表页面。