Angualr6表单提交验证并跳转

　　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:

　　

 <form nz-form [nzLayout]="'inline'" (ngSubmit)="getData()" class="search__form">

　　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。