week5-练习1

最新推荐文章于 2025-12-28 16:49:38 发布

原创最新推荐文章于 2025-12-28 16:49:38 发布 · 73 阅读

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#servlet #java #前端

文章介绍了Servlet的基本结构，特别是如何处理HTTP请求。示例代码展示了如何重写doGet方法来响应GET请求，设置响应类型为text/html，并向客户端发送简单的HTML内容。

servlet代码结构

 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 testServlet extends HttpServlet{
        public void init() throws ServletException{
        }
        public void doGet(HttpServletRequest request,HttpServletResponse response)
                throws ServletException,IOException{
        }
        public void doPost(HttpServletRequest request,HttpServletResponse response)
                throws ServletException,IOException{
        }
        public void doPut(HttpServletRequest request,HttpServletResponse response)
                throws ServletException,IOException{
        }
        public void Delete(HttpServletRequest request,HttpServletResponse response)
                throws ServletException,IOException{
        }
        public void destroy(){
            super.destroy();
        }
    }

一个简单的servlet程序

在编写servlet时不必重写所有方法，只需要重写所需代码即可。

例如：处理HTTP Get请求，只需重写doGet方法

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 SimpleServlet extends HttpServlet{
    	   public void doGet(HttpServletRequest request,HttpServletResponse response)
    		       throws ServletException, IOException{
    		       response.setContentTpe("text/html");
    		       PrintWriter out = response.getWriter();
    		       out.println("this is a servlet.");
    		       }
    		}