Angualr6表单提交验证并跳转

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在Angular6中，使用NG-ZRROR作为前端开发框架，在进行表单开发时遇到了一些问题，最后解决了，在此记录。

1.表单构造:

引入forms:

import { FormGroup, FormBuilder, Validators, FormControl, ValidationErrors } from '@angular/forms';

在form标签下初始化表单:

其中 [nzLayout]是初始化布局，(ngSubmit)="getData()" 是事件绑定。

初始化Input组件:

<nz-form-item>
<nz-form-label [nzSpan]="7" nzRequired>库位代码</nz-form-label>
<nz-form-control [nzSpan]="12" nzHasFeedback>
<input nz-input formControlName="locationCode" placeholder="库位代码">
<nz-form-explain
*ngIf="locationForm.get('locationCode').dirty && locationForm.get('locationCode').errors || locationForm.get('locationCode').pending ">
<ng-container *ngIf="locationForm.get('locationCode').hasError('required')">
请输入库位代码!
</ng-container>
<ng-container *ngIf="locationForm.get('locationCode').hasError('duplicated')">
库位代码不存在!
</ng-container>
<ng-container *ngIf="locationForm.get('locationCode').pending">
正在查询...
</ng-container>
</nz-form-explain>
</nz-form-control>
</nz-form-item>

是这个吊样子的，一个JB输入框要劳资写这么多东西。

nzRequired表示必填项，会在input左边出现红色的*，nzHasFeedback是错误的小红叉。

nz-form-explain:

nz-form-explaincomponent#
用于显示提示信息，会自动根据当前的 nzValidateStatus 显示不同的颜色
注意：每个 nz-form-item 下最多只能有一个 nz-form-explain 。
nz-form-extracomponent#
用于显示表单额外提示信息
nz-form-splitcomponent#
用于显示分隔符 -
nz-form-textcomponent#
在 nz-form-control 中直接显示文本

2.后端初始化

每一个item里面都会包含一个控制器，formControlName 对应后端构造器中的:

//构造器中注入LocationService和Location类
constructor(private fb: FormBuilder, private msg: NzMessageService, private locationService: LocationService, location: Location) {
this.locationForm = this.fb.group({
locationCode: ['', [Validators.required], [this.userNameAsyncValidator]],
locationDesc: ['', [Validators.required]],
Mrp: ['', [Validators.required]],
block: ['', [Validators.required]],
locationType: ['', [Validators.required]],
effective: true,
negativeStock: false,
freeze: false,
});
this.requestBody = location;
}

[Validators.required]表示必填验证，第三个参数是自定义验证器。

提交表单需要验证数据，循环获取每一个控件的控制器，在进行判断:

//提交表单
submit(): void {
let isError = false;
for (const i in this.locationForm.controls) {
this.locationForm.controls[i].markAsDirty();
this.locationForm.controls[i].updateValueAndValidity();
if(this.locationForm.controls[i].invalid){
isError = true;
for (const i in this.locationForm.controls) {
this.locationForm.controls[i].markAsDirty();
this.locationForm.controls[i].updateValueAndValidity();
}
break;
}else{
isError = false;
}
}
if(!isError){
this.requestBody.locationCode = this.locationForm.controls['locationCode'].value;
this.requestBody.locationDesc = this.locationForm.controls['locationDesc'].value;
this.requestBody.mrp = this.locationForm.controls['Mrp'].value;
this.requestBody.locationType = this.locationForm.controls['locationType'].value;
this.requestBody.block = this.locationForm.controls['block'].value;
this.requestBody.effective = this.locationForm.controls['effective'].value;
this.requestBody.negativeStock = this.locationForm.controls['negativeStock'].value;
this.requestBody.freeze = this.locationForm.controls['negativeStock'].value;
this.locationService.insertLocation(this.apiUrl, this.requestBody);
}else{
//表单有错误
}
}

在LocationService里面进行请求数据:

httpOptions = {
headers: new HttpHeaders(
{
'Content-Type': 'application/json'},
),
};

public insertLocation(url,requestBody): any{
this.http.post(url, requestBody,this.httpOptions).subscribe(
data=>{
console.log(JSON.stringify(data));
this.router.navigateByUrl("location")
},
error1 => {
console.log(JSON.stringify(error1));
}
)
}

将对象传入，加入请求头，就ok了。

SpringBoot后端接收。

@RestController
@RequestMapping("/location")
@Api(tags = "库位", value = "TEST")
public class LocationController { private Gson gson = new Gson(); @Resource
private LocationDao locationDao; @ApiOperation(value = "添加库位信息", notes = "添加一个库位")
@PostMapping("/insertLocation")
public @ResponseBody
String insertLocation(@RequestBody Location location) { System.out.println("[LOCATION]:"+location);
location.setId(0);
location.setFactory("PO1");
location.setMrpFactory("P01A");
locationDao.insert(location);
return gson.toJson(new RestMessage("success","400",null));
}

为Demo版，比较随意。