用户请求servlet绘制一个椭圆,请求时将宽和高通过参数width和height传递给servlet
时间: 2024-02-13 16:00:21 浏览: 19
好的,您可以通过以下代码实现:
```java
import java.awt.Color;
import java.awt.Graphics;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class DrawEllipseServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public void doGet(HttpServletRequest request, HttpServletResponse response) {
// 获取宽度和高度参数
int width = Integer.parseInt(request.getParameter("width"));
int height = Integer.parseInt(request.getParameter("height"));
// 设置响应类型
response.setContentType("image/jpeg");
// 绘制椭圆
Graphics g = response.getWriter().getGraphics();
g.setColor(Color.RED);
g.drawOval(0, 0, width, height);
g.dispose();
}
}
```
在浏览器中通过以下 URL 访问该 Servlet:`http://localhost:8080/DrawEllipseServlet?width=200&height=100`,即可绘制一个宽度为 200,高度为 100 的椭圆。