我學習角,我試圖與服務的角度2.無法從節點JS業務數據的角度JS 2
的幫助,以便讓一個節點js的服務數據,當我執行節點的js來自瀏覽器的服務我能夠看到結果,但是當我試圖以角度獲取數據時會引發錯誤。
這裏我已經創建了服務節點js和從角度我想獲取數據,但它會引發錯誤。
節點JS:
var http = require("http");
var express = require('express');
var app = express();
var sql = require('mssql');
var data;
var config = {
server: 'INBGMW-C037',
database: 'InvoiceReminders',
user: 'sa',
password: 'psi'
};
app.get('/serviceline_dtl', function (req, res) {
// connect to your database
sql.close();
sql.connect(config, function (err) {
if (err) console.log(err);
// create Request object
var request = new sql.Request();
request.input('p_Flag', sql.VarChar, "ALL_SERVICE_LINE")
request.output('po_Retval',sql.Int)
request.output('po_UpdatedBy',sql.VarChar)
request.output('po_UpdatedTime',sql.DateTime)
request.output('po_Message',sql.VarChar)
// query to the database and get the records
request.execute("[dbo].[ARA_SP_DS_GetAllSLDetails]").then(function(recordSet) {
if (recordSet == null || recordSet.length === 0)
return;
// res.send(recordset);
data=recordSet.recordsets;
res.send(JSON.stringify(data));
console.log(data);
sql.close();
}).catch(function (err) {
console.log(err);
sql.close();
});
});
});
var server = app.listen(5000, function() {
console.log('Server is running..');
});
角
import { Injectable } from '@angular/core';
import { Http, Response, Headers, RequestOptions } from '@angular/http';
import { serviceLine } from './models/serviceLine';
import {Observable} from 'rxjs/Rx';
// Import RxJs required methods
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';
@Injectable()
export class HttpService {
private BASE_URL:string = 'http://localhost:5000/serviceline_dtl';
constructor(
private http: Http
) { }
public getServiceLinedtl(){
return this.http.get(`${this.BASE_URL}`)
.map((res:Response) => res.json());
//.catch((error:any) => Observable.throw(error.json().error || 'Server error'));
}
}
組分:
import {Component,OnInit ,OnChanges} from '@angular/core';
import {IMyDpOptions} from 'mydatepicker';
import {HttpService} from './http.service';
@Component({
selector: 'my-app',
styleUrls:['/css/home.css'],
templateUrl:'./SpotCheckStatus.html',
providers:[HttpService]
})
export class SpotCheckStatusComponent implements OnInit
{
constructor(
private httpService: HttpService
) {}
ngOnInit(){
this.httpService.getServiceLinedtl().subscribe(
response=> {
console.log("VALUE RECEIVED: ",response);
},
error=> {
console.log("ERROR: ",error);
},
() => {
console.log("Completed");
}
);
}
}
錯誤
響應頭:頭{_headers:地圖(0),_normalizedNames: 地圖(0)}確定:假狀態:0狀態文本: 「」 型:3網址:空 _body:ProgressEvent {isTrusted:真,lengthComputable :false,loaded:0,total:0,type:「error」,...} proto:Body
什麼錯誤提示的拋出 –
響應 頭 : 頭{_headers:地圖(0),_normalizedNames:地圖(0)} OK : 假 狀態 :狀態文本 : 「」 類型 :網址 : 空 _body : ProgressEvent {isTrusted:真,lengthComputable :false,loaded:0,total:0,type:「error」,...} __proto__ : Body – user3301440
以上是我得到的迴應 – user3301440