预检响应具有无效的 HTTP 状态代码 405 角度 4

Question

我收到此错误：XMLHttpRequest 无法加载 http://api.azharcouncil.com/api/Employees/DeleteEmployee?id=11。尝试从表中删除员工时，预检响应具有无效的 HTTP 状态代码 405。

data-storage.service.ts：

deleteEmployee(employeeId: any){
    let url = 'http://api.azharcouncil.com/api/Employees/DeleteEmployee?id='+employeeId;
let headers = new Headers();
headers.append('Content-Type', 'applications/json')
let options = new RequestOptions({ headers: headers }); 
return this.http.delete(url, options)
.map(resp => resp.json());

    }

employees.component.ts：

onDelete(employeeId: any){

  this.dataStorageService.deleteEmployee(employeeId).subscribe(
    data => {
      console.log(data);
      return true;
        },
        error => {
          console.log(error.json().error);
          console.error("Error delete employes!");
          return false;
        }
       );
    console.log(employeeId);
   }

** 当我在邮递员中尝试此网址时，我可以删除员工 **

Answer 1

我认为请求内容类型应该是 application/json 并且更改标题应该是用于添加标题选项的附加键

deleteEmployee(employeeId: any){
 let url = 'http://api.azharcouncil.com/api/Employees/DeleteEmployee?id='+employeeId;
 let headers = new Headers();
 headers.append('Content-Type', 'application/json') 
 return this.http.delete(url,{ headers: headers })
                .map(resp => resp.json())
                .catch(this.handleError);


}