Question

this.Showdata = false;
this.showSpinner = true;
this.subscription = this.assessmentlistService.getAll().subscribe(response => {
        if (response != null) {
            if (response.StatusCode >= 200 && response.StatusCode < 300) {
                this.AssessmentList = response.Data;
                this.Showdata = true;
            }
            else {
                //this.AssessmentList = [];
            }
            this.updateAssessmentList.next();
        }
        this.showSpinner = false;
    },
    error => {
        this.messageData = new MessageData();
        this.messageData.Message = "Server Error, please try again later";
        this.messageData.ShowErrorMessage = true;
        this.showSpinner = false;
    }
);

这是我的api调用方法。我尝试了取消订阅方法。它不起作用。我用以下代码每1分钟刷新数据表。

Refresh() {
    setInterval(() => {
        this.subscription.unsubscribe();
        this.Showdata = false;
        this.showSpinner = true;
        this.subscription = this.assessmentlistService.getAll().subscribe(response => {
                if (response != null) {
                    if (response.StatusCode >= 200 && response.StatusCode < 300) {
                        this.AssessmentList = response.Data;
                        this.Showdata = true;
                    }
                    else {
                        //this.AssessmentList = [];
                    }
                    this.updateAssessmentList.next();
                }
                this.showSpinner = false;
            },
            error => {
                this.messageData = new MessageData();
                this.messageData.Message = "Server Error, please try again later";
                this.messageData.ShowErrorMessage = true;
                this.showSpinner = false;
            }
        );
    }, 60000);
}

Iam尝试重新加载数据表时出现此错误。

ObjectUnsubscribed Error“{name：”ObjectUnsubscribedError“，stack：”ObjectUnsubscribedError：objectunsubscribed↵“... ... ModuleList = ScorebinComponent.ngfactory.js：549：5）”，message：“object unsubscribed”，ngDebugContext：DebugContext_，ngErrorLogger：ƒ} 信息： “对象取消订阅” 名称： “ObjectUnsubscribedError” ngDebugContext ： DebugContext_ {view：{...}，nodeIndex：74，nodeDef：{...}，elDef：{...}，elView：{...}} ngErrorLogger ： ƒ（）堆： “ObjectUnsubscribed：错误的对象unsubscribed”（webpack-internal：///./node_modules/rxjs/_esm5/util/ObjectUnsubscribedError.js：22：26）↵在Subject._trySubscribe（webpack-internal：/// ./ node_modules / rxjs / _esm5 / Subject.js：105：19）↵在Subject.Observable.subscribe（webpack-internal：///。/ node_modules / rxjs / _esm5 / Observable.js：166：93）↵在DataTableDirective.ngOnInit （webpack-internal：///./node_modules/angular-datatables/src/angular-datatables.directive.js：23：28）↵在checkAndUpdateDirectiveInline（webpack-internal：///./node_modules/@angular/core/ esm5 / core.js：12627：19）↵在checkAndUpdateNodeInline（webpack-internal：///./node_modules/@angular/core/esm5/core.js：14151：20）↵at checkAndUpdateNode（webpack-internal：// /./node_modules/@angular/core/esm5/core.js:14094:16)↵在debugCheckAndUpdateNode（webpack-internal：///./node_modules/@angular/core/esm5/core.js：14987：76） ↵在debugCheckDirectivesFn（webpack-internal：///./node_module s /@angular/core/esm5/core.js：14928：13）↵在Object.eval [as updateDirectives]（ng：///AssessmentModule/AssessmentListComponent.ngfactory.js：549：5）“ 的原：错误

Answer 1

如果您想每1分钟重复一次代码，请使用Observable的{{1}}运算符更方便，更清晰：

interval

Observable .interval(60*1000) //one minute .flatMap(() => this.assessmentlistService.getAll()) .subscribe(response => { if (response != null) { //.... your other code } });允许您在每次解决后重复调用.flatMap() API（想想重复订阅）。

“ObjectUnsubscribedError” - 使用get call

1 个答案: