[英]ERROR Error: “[object Object]” in Angular 7
我試圖通過angular 7將數據發布到API,但是單擊注冊單擊時出現以下錯誤。
這是我的app.module.ts文件
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppRoutingModule } from './app-routing.module';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { AppComponent } from './app.component';
// Component
import { LoginComponent} from './Login/login.component';
import { RegComponent } from './Reg/reg.component';
import { HeaderComponent } from './header/header.component';
// Material Component
import { HttpModule } from '@angular/http'; //NEW
import {BrowserAnimationsModule} from '@angular/platform-
browser/animations';
import {MatInputModule, MatOptionModule, MatSelectModule,
MatIconModule} from '@angular/material';
import {MatToolbarModule} from '@angular/material/toolbar';
import {MatTabsModule} from '@angular/material/tabs';
import {MatDividerModule} from '@angular/material/divider';
import {MatButtonModule} from '@angular/material/button';
// services
import { UserService } from './services/reg.service';
@NgModule({
declarations: [
AppComponent,
LoginComponent,
RegComponent,
HeaderComponent
],
imports: [
HttpModule,
BrowserModule,
FormsModule,
AppRoutingModule,
BrowserAnimationsModule,
ReactiveFormsModule,
MatInputModule, MatOptionModule, MatSelectModule, MatIconModule,
MatTabsModule, MatToolbarModule, MatDividerModule,
MatButtonModule, MatSelectModule
],
providers: [UserService],
bootstrap: [AppComponent]
})
export class AppModule { }
這是我的注冊服務文件reg.service.ts
import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';
@Injectable()
export class UserService {
constructor(private http: HttpClient) { }
create(userdata: any): Observable<Object> {
return this.http.post('/api/users', userdata);
}
}
以下是我的reg.component.ts組件文件
import { Component } from '@angular/core';
import { UserService } from '../services/reg.service';
import { VERSION } from '@angular/core';
@Component({
// selector: '<app-reg>',
templateUrl: 'reg.component.html'
})
export class RegComponent {
constructor(
private userService: UserService,
) { }
register(event: any) {
this.userService.create(event.target.username.value)
.subscribe(
data => {
console.log('success');
},
error => {
console.log('Error');
});
}
}
請提供一些解決方案。
https://github.com/akshay-champavat/angular
這是我的存儲庫鏈接,您可以在此處檢查整個代碼。
在您的app.module中更改以下內容:
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppRoutingModule } from './app-routing.module';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { AppComponent } from './app.component';
// Component
import { LoginComponent} from './Login/login.component';
import { RegComponent } from './Reg/reg.component';
import { HeaderComponent } from './header/header.component';
// Material Component
import { HttpModule } from '@angular/http'; //NEW
import {BrowserAnimationsModule} from '@angular/platform-browser/animations';
import {MatInputModule, MatOptionModule, MatSelectModule, MatIconModule} from '@angular/material';
import {MatToolbarModule} from '@angular/material/toolbar';
import {MatTabsModule} from '@angular/material/tabs';
import {MatDividerModule} from '@angular/material/divider';
import {MatButtonModule} from '@angular/material/button';
// services
import { UserService } from './services/reg.service';
import { HttpClientModule } from '@angular/common/http';
@NgModule({
declarations: [
AppComponent,
LoginComponent,
RegComponent,
HeaderComponent
],
imports: [
HttpClientModule,
BrowserModule,
FormsModule,
AppRoutingModule,
BrowserAnimationsModule,
ReactiveFormsModule,
MatInputModule, MatOptionModule, MatSelectModule, MatIconModule, MatTabsModule, MatToolbarModule, MatDividerModule,
MatButtonModule, MatSelectModule
],
providers: [UserService],
bootstrap: [AppComponent]
})
export class AppModule { }
通過HttpClientModule 更改HttpModule
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