编写一个servlet,发送请求参数是username,如果username是zhangsan那么转发到a.html;是lisi重定向到b.html;是wangwu弹框展示很好,到达c.html;是zhaoliu展示按钮到浏览器,按钮上展示zhaoliu;否则展示字符串你好到网页浏览器
时间: 2024-03-01 20:49:18 浏览: 12
好的,以下是根据您的要求编写的servlet代码:
```java
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class MyServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String username = request.getParameter("username");
if (username != null) {
if (username.equals("zhangsan")) {
request.getRequestDispatcher("a.html").forward(request, response);
} else if (username.equals("lisi")) {
response.sendRedirect("b.html");
} else if (username.equals("wangwu")) {
response.getWriter().println("<script>alert('很好')</script>");
response.sendRedirect("c.html");
} else if (username.equals("zhaoliu")) {
response.getWriter().println("<button>Zhaoliu</button>");
} else {
response.getWriter().println("你好");
}
} else {
response.getWriter().println("请输入username参数");
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}
```
这是一个简单的servlet,它根据请求参数的值来进行不同的操作。您可以将其部署到Tomcat等Java Web服务器中,并通过发送GET请求来测试它。例如,如果您将其部署到localhost:8080/myapp/MyServlet路径下,您可以通过访问以下URL来测试:
```
http://localhost:8080/myapp/MyServlet?username=zhangsan
http://localhost:8080/myapp/MyServlet?username=lisi
http://localhost:8080/myapp/MyServlet?username=wangwu
http://localhost:8080/myapp/MyServlet?username=zhaoliu
http://localhost:8080/myapp/MyServlet?username=other
http://localhost:8080/myapp/MyServlet
```
根据不同的请求参数,您将看到不同的结果。
相关推荐
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)