日期:2014-05-17  浏览次数:20458 次

Jsp中的Serverlet和Asp.net里的ashx文件有木有一点像啊? 有木有!

  以前接触.net比较多,这几天学习Ajax,和身边的学Jsp的同学交流了一下。
  了解一下Jsp的运行原理,发现其中的serverlet可以直接向浏览器输出,输出内容包括可以包括Html,其实就是可以动态构建页面。(当然Serverlet的功能不止这些)。这让我想到了asp.net中的*.ashx文件,他也是可以直接输出到浏览器动态构建页面。这就有点像了。
  asp.net中的ProcessRequest 函数的参数HttpContext 是“封装有关个别 HTTP 请求的所有 HTTP 特定的信息”。而serlverlet中的doget,dopost函数中的参数:HttpServletRequest , HttpServletResponse 则分别和asp.net 中HttpContext 类中的request和reponse对应。

  还是有点像的哈,大家说下自己的看法!
   
ashx文件:
C# code

<%@ WebHandler Language="C#" Class="Handler" %>

using System;
using System.Web;

public class Handler : IHttpHandler {
    
    public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "text/plain";
        context.Response.Write("Hello World");
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }

}




serverlet
Java code

package dbdao.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class Sample extends HttpServlet {
    public Sample () {
        super();
    }


    public void destroy() {
        super.destroy(); 
        
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
        out.println("<HTML>");
        out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
        out.println("  <BODY>");
        out.print("    This is ");
        out.print(this.getClass());
        out.println(", using the GET method");
        out.println("  </BODY>");
        out.println("</HTML>");
        out.flush();
        out.close();    
    }


    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.getParameter("name");
        
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
        out.println("<HTML>");
        out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
        out.println("  <BODY>");
        out.print("    This is ");
        out.print(this.getClass());
        out.println(", using the POST method");
        out.println("  </BODY>");
        out.println("</HTML>");
        out.flush();
        out.close();
    }


    public void init() throws ServletException {
        // Put your code here
    }

}






------解决方案--------------------
原理都一样的。。。
------解决方案--------------------
记得Serverlet也是用来处理的 。
form action到serverlet

------解决方案--------------------
语法都差不多

你那头像是怎么事啊。