WebClient.OpenReadAsync() 损坏 JSON 数据。为什么？

发布于 2024-11-25 11:16:53 字数 1546 浏览 6 评论 0原文

我的 Silverlight 应用程序中有一个类，用于将 JSON 字符串与对象类进行序列化（反序列化）。我使用 WebClient.OpenReadAsync 来获取包含此 JSON 字符串的文件：

{"FirstName":"Bob","LastName":"Underwood"}

但是，在调用 OpenReadAsync 后，检索到的字符串有很多额外的字符：

"PK\n\0\0\0\0\0�u�>h��5\0\0\05\0\0\0\t\0\0\0test.json\"{\\\"FirstName\\\":\\\"Gary\\\",\\\"LastName\\\":\\\"MacDonald\\\"}\"PK\0\n\0\0\0\0\0�u�>h��5\0\0\05\0\0\0\t\0\0\0\0\0\0\0\0\0 \0\0\0\0\0\0\0test.jsonPK\0\0\0\0\0\07\0\0\0\\\0\0\0\0\0"

这是我的代码我使用下载 JSON:

WebClient client = new WebClient();
client.OpenReadCompleted += client_OpenReadCompleted;
client.OpenReadAsync(new Uri("/someJsonFile.zip", UriKind.Relative));

void client_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e) {
    if (e.Error == null) {
        StreamReader reader = new StreamReader(e.Result);
        string jsonString =  reader.ReadToEnd().ToString();
    }
    else {
        addMessage("Error " + e.Error.ToString());
    }
}

jsonString 最终得到所有额外的数据，所以我无法按原样反序列化它。

另一件需要注意的事情是：URI 指向 someJsonFile.zip，但它实际上没有压缩，当我给文件提供像 .json 这样的扩展名或没有扩展名时，我得到一个错误，它找不到该文件，但是当我给它一个像 .zip 这样的扩展名时，它发现它很好。有什么办法可以使用普通扩展或无扩展吗？我想知道这是否是配置问题。

问题：

我在提取此文件并使用 StreamReader 获取导致我获取所有垃圾数据的字符串时是否做错了什么？
我是否需要做一些特定的事情才能使用 WebClient 获取具有不同扩展名的文件，例如 .json，甚至根本没有扩展名？< /p>

原文

I have a class in my Silverlight app that (de-)serializes JSON strings to/from an object class.
I use WebClient.OpenReadAsync to get a file that contains this JSON string:

{"FirstName":"Bob","LastName":"Underwood"}

After calling OpenReadAsync however, the retrieved string has a lot of extra characters:

"PK\n\0\0\0\0\0�u�>h��5\0\0\05\0\0\0\t\0\0\0test.json\"{\\\"FirstName\\\":\\\"Gary\\\",\\\"LastName\\\":\\\"MacDonald\\\"}\"PK\0\n\0\0\0\0\0�u�>h��5\0\0\05\0\0\0\t\0\0\0\0\0\0\0\0\0 \0\0\0\0\0\0\0test.jsonPK\0\0\0\0\0\07\0\0\0\\\0\0\0\0\0"

This is the code I'm using to download the JSON:

WebClient client = new WebClient();
client.OpenReadCompleted += client_OpenReadCompleted;
client.OpenReadAsync(new Uri("/someJsonFile.zip", UriKind.Relative));

void client_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e) {
    if (e.Error == null) {
        StreamReader reader = new StreamReader(e.Result);
        string jsonString =  reader.ReadToEnd().ToString();
    }
    else {
        addMessage("Error " + e.Error.ToString());
    }
}

jsonString ends up with all that extra data, so I can't deserialize it as is.

Another thing to note: the URI points to someJsonFile.zip, but it's really not zipped, when I give the file a extension like .json, or no extension, I get a error that it cannot find the file, but when I give it a extension like .zip, it finds it fine. Is there a way I can use a normal or no extension? I was wondering if this was a configuration issue.

Questions:

Am I doing something wrong in pulling this file and using StreamReader to get the string that's causing me to get all that trash data?
Do I need to do something specific to be able to use WebClient to grab a file with different extensions, like .json, or even no extension at all?

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