从ASMX返回JSON，用正确方式处理它在Javascript它在、正确、方式、ASMX

2023-09-11 00:33:55 作者：拿稳的你心

我知道有吨的类似的问题已经在这里，但我不明白这一个。

I realize there are tonnes of similar questions already up here but I cannot figure this one out.

我有一个Web服务（C＃，.NET 3.5）。你需要知道的基本code是如下：

I have a Web Service (C#, .net 3.5). The essential Code you need to know of is as follows:

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.Web.Script.Services.ScriptService]
public class WSMember : System.Web.Services.WebService {

    public WSMember () {   
    }


    [WebMethod]
    [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
    public string GetMember(string IdMember)
    {
        //Ignore the parameter for now... I will be looking up a database with it... 
        //For now just return a minimal object:
        Member m = new Member();
        m.Surname = "Smith";
        m.FirstName = "John";
        return new JavaScriptSerializer().Serialize(m);
    }

此外，在web.config中，我做了如下补充（我只是看到了一些其他的职位...这是正常的/安全吗？）

Also, in web.config, I made the following addition (which I just saw on some other post... is this normal/safe?)

  <webServices>
      <protocols>
        <add name="HttpGet" />
        <add name="HttpPost" />
      </protocols>
    </webServices>

然后Default.aspx中，我的两个重要参考...

Then in Default.aspx, I the two key references...

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script> 
<script type="text/javascript" src="jquery.json-2.2.min.js"  ></script>

jquery.json-2.2.min.js从谷歌code下载

jquery.json-2.2.min.js was downloaded from google code

这里是JavaScript：

And Here is the Javascript:

<script type="text/javascript">
         $(document).ready(function() {
             $("#button1").click(function(event) {
                 var myData = { IdMember: "2" };
                 var encoded = $.toJSON(myData);

                 alert(encoded);

                 $.ajax({
                     type: "POST",
                     url: "WSMember.asmx/GetMember",
                     data: encoded,
                     contentType: "application/json; charset=utf-8",
                     dataType: "json",
                     success: function(msg) {
                         alert("worked" + msg.d);
                         //$("#sidebar").append(msg);
                     },
                     error: function(msg) {
                         alert(msg.d);
                         //$("#sidebar").append(msg);
                     }
                 });
             });
         });

    </script>

当我执行它时，EN codeD JSON作为预期会出现在消息框中...即用双引号：

When I execute it, the encoded json appears in the message box as expected... i.e. with double quotes:

{IdMember：2}

{ "IdMember":"2" }

然而，它总是失败。即使是最基本的Hello World与正在传递中没有数据，它失败。我不断收到未定义的消息数据。

However, it always fails. Even for the most basic Hello World with no data being passed in, it fails. I keep getting "undefined" for the message data.

如果我只是用警报（味精），显示[对象XMLHtt prequest]

If I just use alert(msg), it displays [object XMLHttpRequest]

有谁知道我的数据迷路？

Does anyone know where my data is getting lost??

和另外一个问题...有什么根本性错误我在做什么？

And another question... is there anything fundamentally wrong with what I'm doing?

多谢了。

编辑：

感谢您的答复家伙。我曾尝试以下这样...

thanks for the reply guys. I have tried the following so...

UseHttpGet =真现更改为false。（再次 - 我看到了它的地方，所以我尝试过......但我知道这不可能是正确的： - /）

UseHttpGet = true is now changed to false. (Again - I saw it somewhere so I tried it... but I knew it couldn't be right :-/ )

比方说，Web服务现在返回一个字符串。我建立了串如下（好像有点疯狂......其序列做了同样的事情...）

Let's say the web service now returns a string. I build the string as follows (seems a bit crazy... serializing it did the exact same thing... )

    StringBuilder sb = new StringBuilder();
    sb.Append("{");
    sb.Append("\"Surname\":");
    sb.Append("\"");
    sb.Append(m.Surname);
    sb.Append("\"");

    sb.Append(",\"FirstName\":");
    sb.Append("\"");
    sb.Append(m.FirstName);
    sb.Append("\"");

    sb.Append("}");

    return sb.ToString();

这code返回是这样的：

This code returns something like:

{"Surname":"Smith","FirstName":"John"}

我仍然会得到完全相同的错误...

I still get the exact same error...

我也试着像返回对象会员，因此code就变成了：

I have also tried something like returning the object "Member",so the code becomes:

[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public Member GetMember(string IdMember)
{
    Member m = new Member();
    m.Surname = "Smith";
    m.FirstName = "John";

    return m;
}

这也引发了同样的错误。

This too throws the same error.

对不起，是一个痛苦......我读过这两个环节，和其他人。只是不明白为什么这有什么不同。

Sorry to be a pain... I've read both of those links, and others. Just can't see why this any different.

有没有我需要知道的可能是任何额外的配置设置??

Is there any extra config setting I need to be aware of possibly??

非常感谢你的答复。

更新：问题是固定的。在上述code关键的错误是：

UPDATE: Problem is fixed. The key mistakes in the above code are:

[ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]

应

[ScriptMethod(ResponseFormat = ResponseFormat.Json)]

此外，在窗体上，用一个按钮来调用JavaScript的时候，我被错误地设置输入型...

Also, on the form, when using a button to call the javascript, I was incorrectly setting the input type...

<input id="button1" type="submit" value="Just a test" />

在它的应该说：

<input id="button1" type="button" value="Just a test" />

感谢所有谁帮助。

Many thanks to all who helped.

从ASMX返回JSON，用正确方式处理它在Javascript它在、正确、方式、ASMX

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