ASP.NET中使用一般处理程序ashx作为后台处理实现响应get和post请求

柔情只为你懂 2023-10-06 01:44 42阅读 0赞

## 场景 ##

ASP.NET中新建Web网站并部署到IIS上(详细图文教程)：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/107199747][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_107199747]

在上面博客中已经将网站部署到了IIS上。

怎样对前端的请求进行响应普通文本和JSON数据以及怎样获取get和post请求参数。

注：

博客：  
[https://blog.csdn.net/badao\_liumang\_qizhi ][https_blog.csdn.net_badao_liumang_qizhi]  
关注公众号  
霸道的程序猿  
获取编程相关电子书、教程推送与免费下载。

## 实现 ##

一般处理程序ashx

如果在一个html页面向服务器端请求数据，可用ashx作为后台页面处理数据。ashx适合用作数据后台处理，相当于WebForm中的aspx.cs文件或aspx.vb文件。

首先在项目下新建Handler目录并在此目录下添加新建项-一般处理程序。这里叫Badao.ashx

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

新建成功后

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

这样能返回最简单的文本数据，修改其代码为

context.Response.ContentType = "text/plain";
    context.Response.Write("公众号：霸道的程序猿");

然后运行项目，访问

[http://localhost:3526/Handler/BaDao.ashx][http_localhost_3526_Handler_BaDao.ashx]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2][]

怎样获取get请求的参数

string param = context.Request.QueryString["gongzhonghao"];

那么就可以通过以下方式传递参数

[http://localhost:3526/Handler/BaDao.ashx?gongzhonghao][http_localhost_3526_Handler_BaDao.ashx_gongzhonghao] = 霸道的程序猿

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 3][]

怎样返回Json数据

context.Response.ContentType = "application/json";
    string result = "[{\"Result\":\""+msg+"\"}]";
    context.Response.Write(result);

设置响应类型并构建JSON数据然后返回

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 4][]

怎样接受POST请求的数据

为了构建前端POST请求，在项目下新建Views目录，在目录下新建User.html

<!DOCTYPE html>
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>My Test ashx</title>
        <script type="text/javascript" src="../js/jquery-1.6.4.min.js"></script>
        <script type="text/javascript">
            $(function () {
                $("#btn_Test").click(function () {
                    debugger
                    $.ajax({
                        type: "post",
                        url: "../Handler/BaDao.ashx",
                        datatype: "text",
                        data: { "gongzhonghao": "霸道的程序猿" },
                        success: function (data) {
                            debugger
                            $("#label1").html(data[0].Result);
                        }
                    });
                });
            });
        </script>
    </head>
    <body>
        <button type="button" id="btn_Test">Test</button>
        <label id="label1"></label>
    </body>
    </html>

在页面中引入了Jquery所以还需要添加并引入Jquery

然后修改后台ashx为

context.Response.ContentType = "application/json";
    //获取post请求数据
    string param = context.Request.Form["gongzhonghao"];
    string msg = "公众号:霸道的程序猿";
    msg = param;
    //构建json数据
    string result = "[{\"Result\":\""+msg+"\"}]";
    context.Response.Write(result);

然后运行项目，点击按钮

![20200709082837653.gif][]

### 示例代码下载 ###

[https://download.csdn.net/download/BADAO\_LIUMANG\_QIZHI/12589864][https_download.csdn.net_download_BADAO_LIUMANG_QIZHI_12589864]

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_107199747]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/107199747
[https_blog.csdn.net_badao_liumang_qizhi]: https://blog.csdn.net/badao_liumang_qizhi
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/2020070908262814.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200709082635754.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[http_localhost_3526_Handler_BaDao.ashx]: http://localhost:3526/Handler/BaDao.ashx
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20200709082744388.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[http_localhost_3526_Handler_BaDao.ashx_gongzhonghao]: http://localhost:3526/Handler/BaDao.ashx?gongzhonghao
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20200709082757675.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/2020070908282691.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[20200709082837653.gif]: https://img-blog.csdnimg.cn/20200709082837653.gif
[https_download.csdn.net_download_BADAO_LIUMANG_QIZHI_12589864]: https://download.csdn.net/download/BADAO_LIUMANG_QIZHI/12589864