我想要实现的是我想将我的整个表单值发布到我的 RESTfull 服务中,但是我对在 angular2 中使用表单以及提交表单时如何传递和检查对象值感到困惑?
它不会触发我的 Restful 服务,也不会给我错误,我想我遗漏了一些东西,下面是我的做法
这是我的 app.component.html :
Create a new Retur:
<form (ngSubmit)="submitForm()">
<div class="form-group">
<label for="nomor_transaksi">Nomor Transaksi</label>
<input type="text" placeholder="nomor transaksi" [(ngModel)]="data.nomor_transaksi" [ngModelOptions]="{standalone: true}"/>
</div>
<button type="submit">Save Contact</button>
</form>
下面是我的 app.component.ts :
import { Component, OnInit } from '@angular/core';
import { NavbarComponent } from './navbar';
import { RestfullService } from './restfull.service';
import { Observable } from 'rxjs/Rx';
import { HTTP_PROVIDERS, HTTP_BINDINGS, Http, Response, HttpModule} from '@angular/http';
import 'rxjs/add/operator/map';
@Component({
selector: 'app-root',
templateUrl: 'app.component.html',
styleUrls: ['app.component.css'],
directives: [NavbarComponent],
providers: [RestfullService, HTTP_PROVIDERS]
})
export class AppComponent {
title = 'app works!';
public data;
public active;
ngOnInit(){
this.getRest();
}
constructor(private _restfull: RestfullService) {
this.data = { nomor_transaksi: '12345678' }
}
getRest(){
this._restfull.getDashboard().subscribe(
data => {this.active = data[0]}
);
}
submitForm(data:Object){
this._restfull.saveRetur(data);
console.log("exec" + data);
}
}
在这种情况下,我的 POST 函数是 submitForm(),它是访问 restfull.service.ts 类,下面是 restfull.service.ts 类:
import { Injectable } from '@angular/core';
import { HTTP_PROVIDERS, HTTP_BINDINGS, Http, Response, HttpModule} from '@angular/http';
import { Observable } from 'rxjs/Rx';
@Injectable()
export class RestfullService {
constructor(private http:Http) { }
getDashboard(){
return Observable.forkJoin(
this.http.get('http://localhost:8080/springserviceweb/').map((res:Response) => res.json())
);
}
saveRetur(data){
this.http.post('http://localhost:8080/springserviceweb/service/save', JSON.stringify(data))
}
}
下面是我的 RESTfull 服务如何检索数据:
// save
@RequestMapping(value = "/save", method = RequestMethod.POST, consumes ="application/json")
public ReturHeader save(@RequestBody ReturHeader Retur, UriComponentsBuilder ucBuilder) throws Exception {
try {
Retur.setNomor_Transaksi(retur.generateAutoNomorRetur());
retur.saveRetur(Retur);
} catch (Exception e) {
Retur.setERROR_STAT(e.getMessage().trim());
// return new ResponseEntity<ReturHeader>(Retur,HttpStatus.NOT_FOUND);
}
return Retur;
}
我的服务应该检索一个对象,我如何正确使用 angular2 将 JSON 对象从 HTML 传递到我的服务?当我尝试我的代码时,它只是显示我的数据属性未定义
更新了我的代码: 这是我的 app.component.ts
import { Component, OnInit } from '@angular/core';
import { NavbarComponent } from './navbar';
import { RestfullService } from './restfull.service';
import { Observable } from 'rxjs/Rx';
import { HTTP_PROVIDERS, HTTP_BINDINGS, Http, Response, HttpModule} from '@angular/http';
import { FormGroup, FormBuilder, Validators } from '@angular/forms';
import 'rxjs/add/operator/map';
@Component({
selector: 'app-root',
templateUrl: 'app.component.html',
styleUrls: ['app.component.css'],
directives: [NavbarComponent],
providers: [RestfullService, HTTP_PROVIDERS]
})
export class AppComponent {
title = 'app works!';
public data;
public active;
datareturForm: FormGroup;
constructor(private _restfull: RestfullService, private formBuilder: FormBuilder) {
this.data = { nomor_transaksi: '12345678' }
}
ngOnInit(){
this.getRest();
this.datareturForm = this.formBuilder.group({
"nomor_transaksi": ['', Validators.maxLength(10)]
//nomor_transaksi: ['', Validators.maxLength(10)]
})
}
getRest(){
this._restfull.getDashboard().subscribe(
data => {this.active = data[0]}
);
}
submitForm(data:Object){
this._restfull.saveRetur(data).subscribe((dataResponse) => {
console.log("exec " + data);
});
}
}
在我的 resful.service.ts 下面:
import { Injectable } from '@angular/core';
import { HTTP_PROVIDERS, HTTP_BINDINGS, Http, Response, HttpModule, Headers, RequestOptions} from '@angular/http';
import { Observable } from 'rxjs/Rx';
@Injectable()
export class RestfullService {
constructor(private http:Http) { }
getDashboard(){
return Observable.forkJoin(
this.http.get('http://localhost:8080/springserviceweb/service/retur/getwil/OTLB001/JKT').map((res:Response) => res.json())
);
}
saveRetur(data){
console.log('masuk ke service');
let headers = new Headers({'Content-Type': 'application/json'});
let options = new RequestOptions({headers: headers});
let body = JSON.stringify(data);
return this.http.post('http://localhost:8080/springserviceweb/service/retur/save', data, headers).map((res:Response) => res.json());
}
}
“数据”变量仍然是未定义的,当发送到我的 RESTfull 服务时,我在这里错过了什么?
最佳答案
Create a new Retur:
<form (ngSubmit)="submitForm()">
将此更改为:
<form (ngSubmit)="submitForm(form)" #form="ngForm">
关于java - 如何在FORM中进行POST提交到angular2并将对象值传递给REST服务?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39135762/