未找到组件工厂。你把它添加到@NgModule.entryComponents了吗?

No component factory found. Did you add it to @NgModule.entryComponents?

在将 ag-grid 与 angular4 一起使用时,我遇到了以下错误消息。

我试图在通过 HTTP json 获取后显示行数据。

this.gridOptions.api.setRowData(this.gridOptions.rowData);

但是我的代码出现了以下错误信息。

ERROR Error: No component factory found for RedComponentComponent. Did you add it to @NgModule.entryComponents?

这是我的应用模块代码。我已经设置为 entryComponents.

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';
import { AgGridModule} from "ag-grid-angular/main";

import { AppComponent } from './app.component';
import { MyGridApplicationComponent } from './my-grid-application/my-grid-application.component';
import { RedComponentComponent } from './red-component/red-component.component';

@NgModule({
  imports: [
    BrowserModule,
    AgGridModule.withComponents(
      [RedComponentComponent]
    ),
    FormsModule,
    HttpModule
  ],
  declarations: [
    AppComponent,
    MyGridApplicationComponent,
    RedComponentComponent
  ],
  entryComponents: [
    RedComponentComponent
  ],  
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

error position of my code

我的问题。为什么此代码无法解析此组件。

从服务器加载数据时,您正在将 string 传递给 `ComponentFactoryResolver,但它应该是组件类型。

header.json

{
  "headerName": "DetailCode",
  "field": "detailCode",
  "cellRendererFramework": "RedComponentComponent", // string
  "width":100
},

为了解决这个问题,我会创建入口组件映射,例如:

条目-components.ts

import { RedComponentComponent } from './red-component/red-component.component';

export const entryComponentsMap = {
  'RedComponentComponent': RedComponentComponent
};

然后从 json 字符串映射加载到组件 class

comm-code-grid-option.service.ts

private fetchColumnDefs() {
 console.log("fetchColumnDefs()");

 this.http.get(this.API_URI + "resident/header.json").subscribe(
   r => {
     this.gridOptions.columnDefs = r.json();
     this.gridOptions.columnDefs.forEach((x: any) => {
       if (x.cellRendererFramework) {
         x.cellRendererFramework = entryComponentsMap[x.cellRendererFramework];
       }
     });