import javax.servlet.*;
import javax.servlet.http.*;
import java.io.IOException;
public class MyServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String name = request.getParameter("name");
response.getWriter().write("Hello, " + name + "!");
}
}
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<servlet>
<servlet-name>MyServlet</servlet-name>
<servlet-class>com.example.MyServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>MyServlet</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
</web-app>
html
<html>
<body>
<% String name = request.getParameter("name"); %>
<h2>Hello, <%= name %>!</h2>
</body>
</html>
import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;
@Path("/hello")
public class HelloResource {
@GET
@Path("/{name}")
@Produces(MediaType.TEXT_PLAIN)
public String sayHello(@PathParam("name") String name) {
return "Hello, " + name + "!";
}
}
