- Servlet3.0新增了一些注解,用来简化的javaweb代码开发,可以省略web.xml配置文件 支持异步处理(多线程技术) 支持可插性特性(书写的代码编译后生成的class文件可以直接部署到其他项目的,自动加载执行)
- @WebServlet:
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet(name = "HelloServlet",urlPatterns = "/hello")
public class HelloServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) {
System.out.println("get 请求执行");
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) {
System.out.println("post 请求执行");
}
}