_submitForm() { const headers: HttpHeaders = new HttpHeaders() .set('Content-Type', 'application/x-www-form-urlencoded'); const params: HttpParams = new HttpParams() .set('access_token', '24.6f28cb33f8ce81c21bd33dc38be63ae2.2592000.1516887129.282335-10544144') .set('image', encodeURIComponent(this.imageBase64.slice(23).replace('[\\s*\t\n\r]', ''))); this.http.post( '/webimage', params, {headers: headers} ).subscribe( (val) => { console.log('相似度为', val['words'], this.imageBase64, this.imageBas...