从json格式的aspx页面获取响应，而不是普通的html
[英]get response from aspx page in json format instead of plain html
问题描述
I want to make an ajax call to server. 
我想对服务器进行ajax调用。 I need to fetch the html of page say foo.aspx: Foo.aspx html: 我需要获取页面的html说foo.aspx：Foo.aspx html：
<form>
<div>foo</div>
</form>
I am calling this page from remote page like: 我从远程页面调用此页面，如：
$.ajax({
url: '/foo.aspx',
data: {},
contentType: 'application/json; charset=utf-8',
dataType: 'json',
success: function (response) {
}
});
I need the html of this page BUT my requirement is that the response from this page should be JSON format. 我需要这个页面的html但我的要求是这个页面的响应应该是JSON格式。 ie. 即。
{"myresponse": {
"id": "123",
"html":<HTML of foo.aspx>,
}}
I need the html as a json property because I need to set other properties too from foo.aspx code behind? 我需要将html作为json属性，因为我需要从foo.aspx代码后面设置其他属性吗？ How can I get response from aspx page in json format instead of plain html? 如何以json格式而不是普通的html从aspx页面获得响应？ What is the other approach to get HTML of remote page + other properties too in json format from server? 从服务器获取json格式的远程页面+其他属性的HTML的另一种方法是什么？ Should I go for HTTPHandlers? 我应该去HTTPHandlers吗？ If yes, how can I get the html of foo.aspx in that HTTPHandler? 如果是，我如何在HTTPHandler中获取foo.aspx的html？
4 个解决方案
解决方案1
2 已采纳 2012-04-03 13:32:19
You may want to try overriding the render method of your page : 您可能想尝试覆盖页面的render方法：
protected override void Render(HtmlTextWriter writer)
{
var sw = new System.IO.StringWriter();
var tw = new HtmlTextWriter(sw);
base.Render(tw);
Response.Write(String.Format("{{\"myresponse\": {{ \"id": \"123",\"html\":\"{0}\"}}}}"
, Server.HtmlEncode(sw.ToString()).Replace("\n"," "));
Response.Flush();
Response.End();
}
Sorry for any syntax error, and for the basic handling of carriage returns. 很抱歉任何语法错误，以及回车的基本处理。 I guess it will be better to buffer the output during page_load (Response.BufferOutput = true) 我想在page_load期间缓冲输出会更好（Response.BufferOutput = true）
解决方案2
0 2015-09-29 08:44:53
I changed jbl's example of overriding the Render method a little bit, this worked perfectly for me. 我改变了jbl的一个重写Render方法的例子，这对我来说非常合适。 I didn't need the HTML-encoding, just needed to apply some formatting and include the content-type 我不需要HTML编码，只需要应用一些格式并包含内容类型
protected override void Render(HtmlTextWriter writer)
{
var sw = new System.IO.StringWriter();
var tw = new HtmlTextWriter(sw);
base.Render(tw);
var html = sw.ToString();
html = html.Replace("\n", " ");
html = html.Replace("\r", " ");
html = html.Replace("\t", " ");
var data = html.Replace("\"", "\\\"");
data = data.Replace("/", "\\/");
var json = String.Format("{{\"html\":\"{0}\"}}", data);
Response.ContentType = "application/json";
Response.Write(json);
Response.Flush();
Response.End();
}
解决方案3
0 2012-04-03 13:06:53
If you need HTML then change the datatype to html. 如果需要HTML，请将数据类型更改为html。 The success event will then return html as the response. 然后，成功事件将返回html作为响应。
Something like: 就像是：
$.ajax({
url: '/foo.aspx',
dataType: 'html',
success: function (data, textStatus, jqXHR) {
alert(data); //data is html.
}
});
解决方案4
0 2012-04-03 13:08:53
Basically You have to create an HTTPHandler that wraps Foo.aspx output into your JSON evenlope. 基本上你必须创建一个HTTPHandler，它将Foo.aspx输出包装到你的JSON evenlope中。 HAving that said, JS call would be to url '/MyWebHandler?page=foo.aspx' instead of just /foo.aspx. 如上所述，JS调用将是url'/ MyWebHandler?page=foo.aspx'，而不仅仅是/foo.aspx。 Within the handler all you need is just to query your page and dump its output. 在处理程序中，您只需查询页面并转储其输出即可。
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