我使用 Get Async()编写了一个函数,该函数运行良好,但现在我想使用 Send Async()代替[用于POST和第四]但是我的SendAsync()版本无法按预期运行,它返回422无法处理的实体。 (没有IDE自动取款机;对于小错别字表示抱歉)
init
var Client = new HttpClient{
BaseAddress = "https://example.com"
}
Client.DefaultRequestHeaders.UserAgent.ParseAdd("Project/1.0 (blah blah)");
...
工作获取异步()
public async Task<string> GetResponse(string user, string pass){
var uri = $"/user/login.json?name={user}&password={pass}";
var req = await Client.GetAsync(uri);
return req.Content.Request.Content.ReasStringAsync();
}
无效的发送异步()
public async Task<string> GetResponse(string page, Dictionary<string, string> args){
//assume page = "/user/login.json" and args == {"username", "user"},{"password", "pass"}
try{
var req = new HttpRequestMessage
{
Method = HttpMethod.Get,
RequestUri = new Uri(page),
Content = new FormUrlEncodedContent(args),
}
var response = await Client.SendAsync(req);
if(response.IsSuccessStatusCode){
return await response.Content.ReasStringAsync();
return null;
}
catch{ return null }
}
注意:与422一起,响应仍然包含json,其中指出“无效的Auth令牌!”
GetAsync()在执行SendAsync()不是吗?
答案 0 :(得分:1)
您的发送在HTTP GET请求的正文中包含内容。
HTTP GET请求不应具有BODY,并且某些服务器将无法处理此类请求。
将字典转换为QueryString并将其包含在URI中。
public async Task<string> GetResponse(string page, Dictionary<string, string> args) {
//assume page = "/user/login.json" and args == {"username", "user"},{"password", "pass"}
try {
QueryString queryString = QueryString.Create(args);
var uri = new Uri(page + queryString.ToString());
var request = new HttpRequestMessage(HttpMethod.Get, uri);
var response = await Client.SendAsync(request);
if(response.IsSuccessStatusCode){
return await response.Content.ReadAsStringAsync();
return string.Empty;
} catch { return string.Empty; }
}
答案 1 :(得分:0)
您的代码段没有显示它,但是您确定第二个查询的URL已显示
$"/user/login.json?name={user}&password={pass}"
不是
$"/user/login.json"
?