重回JavaWeb-Servlet
作者:互联网
Servlet简介
- Servlet就是sun公司开发动态web的一门技术
- Sun在这些API中提供一个接口叫做Servlet,如果你想开发一个Servlet程序,只需要完成两个小步骤:
- 编写一个类,实现Servlet接口
- 把开发好的Java类部署到web服务器中
把实现了Servlet接口的Java程序就叫做,Servlet
HelloServlet
- 构建一个Maven项目
- 编写HelloServlet继承HttpServlet
public class HelloServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { this.doPost(req, resp); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { PrintWriter writer = resp.getWriter(); writer.print("Hello"); writer.write("World"); } }
- 编写Servlet映射
<!-- 注册Servlet--> <servlet> <servlet-name>hello</servlet-name> <servlet-class>com.circle.servlet.HelloServlet</servlet-class> </servlet> <!-- Servlet的请求路径--> <servlet-mapping> <servlet-name>hello</servlet-name> <url-pattern>/hello</url-pattern> </servlet-mapping>
- 配置Tomcat
- 启动测试
标签:writer,JavaWeb,resp,req,重回,Servlet,hello,HelloServlet 来源: https://www.cnblogs.com/circle-wl/p/14495942.html