我尝试编写简单的代码:
public async Task GetData(String labelName)
{
using (var client = new HttpClient())
{
var uri = new Uri(@"https://example.com/over/search_field?=search_label=" + labelName);
var response = await client.GetAsync(uri).ConfigureAwait(false);
var textResult = await response.Content.ReadAsStringAsync();
return textResult;
}
}
在project.json:
{
"webroot": "wwwroot",
"version": "1.0.0-*",
"dependencies": {
"Microsoft.AspNet.IISPlatformHandler": "1.0.0-beta8",
"Microsoft.AspNet.Mvc": "6.0.0-beta8",
"Microsoft.AspNet.Server.Kestrel": "1.0.0-beta8",
"Microsoft.AspNet.StaticFiles": "1.0.0-beta8",
"Microsoft.Framework.Logging": "1.0.0-beta8",
"Microsoft.Framework.Logging.Console": "1.0.0-beta8",
"Microsoft.Framework.Logging.Debug": "1.0.0-beta8",
"Microsoft.Net.Http": "2.2.22"
},
"frameworks": {
"dnx451": {
"dependencies": {
"Microsoft.AspNet.WebApi.Client": "5.2.3",
"Microsoft.AspNet.WebApi.Owin": "5.2.3",
"System.Net.Http": "4.0.1-beta-23409"
},
"frameworkAssemblies": {
"System.Net": "4.0.0.0",
"System.Net.Http": "4.0.0.0"
}
},
"dnxcore50": { }
},
但是,当我尝试构建代码时,我得到错误:
错误CS0246找不到类型或命名空间名称'HttpClient'(您是否缺少using指令或程序集引用？)
你能帮助我吗？如何解决这个错误？我使用VS 2015和ASP MVC 6 Web API.谢谢!
这对我有用.我添加System.Net.Http的dependencies部分,建成项目(因此恢复了这两个新的依赖DNX 4.5.1和DNX Core 5.0)
"dependencies": {
"Microsoft.AspNet.Diagnostics": "1.0.0-rc1-final",
"Microsoft.AspNet.IISPlatformHandler": "1.0.0-rc1-final",
"Microsoft.AspNet.Mvc": "6.0.0-rc1-final",
"Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-rc1-final",
"Microsoft.AspNet.Server.Kestrel": "1.0.0-rc1-final",
// Removed some dependencies for saving space:)
"Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0-rc1-final",
"System.Net.Http": "4.0.1-beta-23409"
},
"frameworks": {
"dnx451": { },
"dnxcore50": {}
},
在下面的运行时验证,它工作正常.
coreclr - X86 - 1.0.0-rc1-update1
coreclr - X64 - 1.0.0-rc1-update1
clr - X86 - 1.0.0-rc1-update1
clr - X64 - 1.0.0-rc1-update1
此外,您需要确保拥有using在您拥有GetData方法的类文件中导入System.Net.Http命名空间的指令.
using System.Net.Http;
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