jsp实现登陆注册的购物车程序下载实例，jsp实现登陆注册的购物车程序下载实例
以下是一个简单的jsp实现登陆注册和购物车程序的下载实例：
1. 项目结构
```
/src
├── /WEB-INF
│ ├── web.xml
│ └── views
│ ├── login.jsp
│ ├── register.jsp
│ ├── cart.jsp
│ └── index.jsp
├── /lib
└── /webapp
└── images
└── logo.png
```
2. web.xml配置
```xml
```
3. LoginServlet.java
```java
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.IOException;
public class LoginServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String username = request.getParameter("
