Question

我很遗憾再次提出类似令人沮丧的问题，但我无法从Angular2配置对Web API 2的http POST请求

fetchBattingAverage() {
    let str = JSON.stringify({"foo": "bar"});
    let headers = new Headers({ 'Content-Type': 'application/json' });
    let options = new RequestOptions({ headers: headers });


    // JSON.stringify({ "abc": "def" })
    return this._http.post(
      this.baseURL + 'getBatting',
      str,
      options
    )
      .map(res => res.json());
  }

Web API 2：web config

<httpProtocol>
  <customHeaders>
    <add name="Access-Control-Allow-Origin" value="*" />
    <add name="Access-Control-Allow-Headers" value="*" />
    <add name="Access-Control-Allow-Methods" value="*" />
  </customHeaders>
</httpProtocol>

Web APi 2.2控制器：

[RoutePrefix("api")]
public class SachinController : ApiController
{
        [HttpPost]
        [Route("getBatting")]
        [EnableCors(origins: "*", headers: "*", methods: "*")]
        public IHttpActionResult Post([FromBody] string countries)
        {
            // Do something
            return Ok()
        }

错误讯息：

OPTIONS http://localhost:54094/api/getBatting 405 (Method Not Allowed)
Response for preflight has invalid HTTP status code 405

请求标题：

OPTIONS /api/getBatting HTTP/1.1
Host: localhost:54094
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
Access-Control-Request-Method: POST
Origin: http://localhost:4200
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36
Access-Control-Request-Headers: content-type
Accept: */*
DNT: 1
Referer: http://localhost:4200/
Accept-Encoding: gzip, deflate, sdch, br
Accept-Language: en-US,en;q=0.8

Answer 1

显然，Web.Config中还有另一个属性需要删除。

<system.webServer>
    <modules>
      <remove name="FormsAuthentication" />
    </modules>
    <handlers>
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
      <remove name="OPTIONSVerbHandler" />   <!-- Remove this -->
      <remove name="TRACEVerbHandler" />
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
    </handlers>
    <httpProtocol>
    </httpProtocol>
  </system.webServer>

从post请求中获取值不允许使用Method

1 个答案: