如何在 WebAPI 中获取 POST 数据? [英] How to get POST data in WebAPI?

问题描述

我以以下形式向服务器发送请求:

I'm sending a request to server in the following form:

http://localhost:12345/api/controller/par1/par2

请求被正确解析为如下方法:

The request is correctly resolved to a method like:

[HttpPost]
public void object Post(string par1, string par2)

但是，我通过请求内容传递了额外的数据.如何检索这些数据?

However, I pass additional data through the request content. How can I retrieve these data?

举个例子，假设请求是从表单发送的:

For the sake of example, let's say, that the request is sent from the form:

<form action="http://localhost:12345/api/controller/par1/par2" method="post">
    <input type="hidden" name="data" value="value" />
    <input type="submit" name="submit" value="Submit" />
</form>

推荐答案

来自这个问题的答案:如何使用 asp.net webapi 获取 Json Post 值

1. 使用参数绑定自动解析；请注意，dynamic 由 JToken 组成，因此是 .Value 访问器.

1. Autoparse using parameter binding; note that the dynamic is made up of JToken, hence the .Value accessor.

public void Post([FromBody]dynamic value) {
    var x = value.var1.Value; // JToken
}

读起来就像Request.RequestUri.ParseQueryString()[key]

public async Task Post() {        
   dynamic obj = await Request.Content.ReadAsAsync<JObject>();
   var y = obj.var1;
}

与#2 相同，只是不是异步的 (?) 所以你可以在辅助方法中使用它

Same as #2, just not asynchronously (?) so you can use it in a helper method

private T GetPostParam<T>(string key) {
    var p = Request.Content.ReadAsAsync<JObject>();
    return (T)Convert.ChangeType(p.Result[key], typeof(T)); // example conversion, could be null...
}

Caveat -- 需要媒体类型 application/json 以触发 JsonMediaTypeFormatter 处理.

Caveat -- expects media-type application/json in order to trigger JsonMediaTypeFormatter handling.

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