Angular2 / 4发布方法不起作用 [英] Angular2/4 post method not working
问题描述
我是angular2 / 4 Web API的新手。我想使用angular 4 Web API http将一些数据保存到数据库。当我从角度调用GET方法时,它工作正常,但无法在POST方法上工作。我一直在获取415不支持的媒体类型,但是当我使用邮递员时,post方法可以正常工作,因为我将内容类型更改为application / json。当我使用警报按钮时,我得到了[object,Object],但是在angular2 / 4中,它不起作用...我看到很多问题,但都对我不起作用。
这是我的service.ts文件
CatchStockDetail(stock: any)
: Observable<IStockdetails[]> {
alert(stock);
let stockdetail = JSON.stringify([{ stock }]);
let headers = new Headers({ 'Content-Type': 'application/json' });
let options = new RequestOptions({ headers: headers });
return this._http.post('http://localhost:1234/api/NewStockCount/' + 'Stock', stockdetail,
{ params: [{ stock }] })
// .map(res => res.json());
// .map(res => res.json().stock)
.map((response: Response) => <IStockdetails[]>response.json())
.catch(this.handleError);
}
这是我的component.ts文件
this._enqService.CatchStockDetail(this.stock)
.subscribe(value => {
value.forEach(stock => {
this.stockdetail.push(this.stock)
});
},
error => {
console.error(error);
this.statusMessage = "Problem with the service.Please try again after sometime";
});
这是我的api代码
[HttpPost]
public void Stock([FromBody] List<spGetNewStockCountDetails_Result> jsonvalues)
{
foreach (spGetNewStockCountDetails_Result Datastock in jsonvalues)
{
spGetNewStockCountDetails_Result Stockobject = new spGetNewStockCountDetails_Result();
Stockobject.schid = Datastock.schid;
Stockobject.itemid = Datastock.itemid;
Stockobject.itemcode = Datastock.itemcode;
Stockobject.itemdescription = Datastock.itemdescription;
Stockobject.packingtypeid = Datastock.packingtypeid;
Stockobject.count = Datastock.count;
enqentities.spGetNewStockCountDetails(Datastock.schid, Datastock.itemid, Datastock.itemcode, Datastock.itemdescription, Datastock.packingtypeid, Datastock.count);
}
}
public class spGetNewStockCountDetails
{
public int schid { get; set; }
// public int id { get; set; }
public int itemid { get; set; }
public string itemcode { get; set; }
public string itemdescription { get; set; }
public int packingtypeid { get; set; }
public int count { get; set; }
}
这是我的错误
{ Message:此资源不支持请求实体的媒体类型'text / plain'。, ExceptionMessage:没有MediaTypeFormatter可用于读取类型为
"{"Message":"The request entity's media type 'text/plain' is not supported for this resource.","ExceptionMessage":"No MediaTypeFormatter is available to read an object of type
推荐答案
您的api需要一个数组,但是您发送的是字符串 ,这就是为什么您得到状态代码415
Your api is expecting an array but you send a string instead, that is why you get a status code of 415
并删除该参数的原因,甚至在您的api中也不需要。
And remove the param, it is not even required in your api.
CatchStockDetail(stock: any)
: Observable<IStockdetails[]> {
alert(stock);
let stockdetail = stock;
let headers = new Headers({ 'Content-Type': 'application/json' });
let options = new RequestOptions({ headers: headers });
return this._http.post('http://localhost:1234/api/NewStockCount/' + 'Stock', stockdetail, options)
.map((response: Response) => <IStockdetails[]>response.json())
.catch(this.handleError);
}
关于您遇到的错误,请查看您的api,甚至不返回数据,这为什么在 map
上会出现错误,删除 map
会立即解决您的问题。
About the error you're encountering, look at your api, you're not even returning a data, which why on map
you get an error, remove the map
will solve your issue for now.
您必须更新组件
this._enqService.CatchStockDetail(this.stock)
.subscribe(value => {
if(typeof value !== 'undefined' && value != null){
value.forEach(stock => {
this.stockdetail.push(this.stock)
});
}
},
error => {
console.error(error);
this.statusMessage = "Problem with the service.Please try again after sometime";
});
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