2019-8-22学习笔记---文件上传与读取

import { Component, OnInit } from '@angular/core';
import { _HttpClient } from '@delon/theme';
@Component({
  selector: 'app-item-two',
  templateUrl: './item-two.component.html',
  styleUrls: ['./item-two.component.less']
})
export class ItemTwoComponent implements OnInit {
  private status = [];
  private mystatus;
  constructor(private http:_HttpClient) { }

  ngOnInit() {
    let url='http://localhost:4200/assets/myjson/mydata.json';
    this.http.get(url).subscribe((res:any)=>{
      this.status=res.data1
      console.log(this.status)
    })
  }
  myUpload(e){
    console.log(e)
    let fileReader = new FileReader();
    fileReader.onload=()=>{
      console.log(fileReader.result)
    }
    // fileReader.readAsText(e.target.files[0], 'utf-8')
    fileReader.readAsText(e.target.files[0])
  }
}

　　

import { Component, OnInit, ViewChild, TemplateRef, ChangeDetectionStrategy, ChangeDetectorRef } from '@angular/core';
import { NzMessageService, NzModalService } from 'ng-zorro-antd';
import { _HttpClient } from '@delon/theme';
import { tap, map } from 'rxjs/operators';
import Clipboard from '../../../../clipboard.min.js';
import { STComponent, STColumn, STData, STChange } from '@delon/abc';


@Component({
  selector: 'app-wlblock',
  templateUrl: './wlblock.component.html',
  styleUrls: ['./wlblock.component.less']
})
export class WlblockComponent implements OnInit {
  private status = [];
  private mystatus;
  private myData2;
  private myData;
  constructor(private http:_HttpClient ) { }

  ngOnInit() {//初始化时候，异步请求服务器端的首页数据
    let url='http://localhost:4200/assets/myjson/mydata.json';
    this.http.get(url).subscribe((res:any)=>{
      this.status=res.data1
      console.log(this.status)
    })
  }
  myclick(e:MouseEvent){
    e.preventDefault();
    console.log(e)
  }
  getData1(e){
    var clipboard = new Clipboard('btn');
 
clipboard.on('success', function(e) {
    console.info('Action:', e.action);
    console.info('Text:', e.text);
    console.info('Trigger:', e.trigger);
    e.clearSelection();
});
 
clipboard.on('error', function(e) {
    console.error('Action:', e.action);
    console.error('Trigger:', e.trigger);
});
  }
}

　　

<p>item-two works!</p>
<nz-progress [nzPercent]="30"></nz-progress>
<textarea cols="30" rows="10" (contextmenu)="myclick($event)">{{myData}}</textarea>
<button id="btn" (click)="getData1($event)">上传文件</button>
<select name="" id="" style="200px">
  <option *ngFor="let i of myData2;let idx = index"  value="i.test"></option>
</select>
<nz-upload nzAction="https://jsonplaceholder.typicode.com/posts/" (nzChange)="myUpload($event)">
    <button nz-button><i nz-icon nzType="upload"></i><span>Click to Upload</span></button>
  </nz-upload>
  <input type="file" (change)="myUpload($event)">

　　

<page-header>
  <ng-template>
  </ng-template>
</page-header>
<div>
  <nz-button-group>
    <button nz-button nzType="primary">新增</button>
    <button nz-button>编辑</button>
    <button nz-button>删除</button>
    <button nz-button nzType="default">刷新</button>
    <button nz-button nzType="default">保存</button>
  </nz-button-group>
  <nz-button-group>
    <button nz-button nzType="primary"><i nz-icon nzType="left"></i>上一个</button>
    <button nz-button nzType="primary">下一个<i nz-icon nzType="right"></i></button>
  </nz-button-group>
</div>
<div se-container="1" class="mybox">
    <div class="left-box">
            <se label="单号选择">
                    <nz-select [(ngModel)]="mystatus"  [nzPlaceHolder]="'请选择'" class="myselect">
                        <nz-option *ngFor="let i of status; let idx = index" [nzLabel]="i.text" [nzValue]="idx"></nz-option>
                    </nz-select>
                  </se>
                  <se label="单号选择">
                    <nz-select [(ngModel)]="mystatus" name="status" id="status" [nzPlaceHolder]="'请选择'" [nzShowSearch]="true" class="myselect">
                      <nz-option >选项一</nz-option>
                    </nz-select>
                  </se>
                  <se label="单号选择">
                    <nz-select [(ngModel)]="mystatus" name="status" id="status" [nzPlaceHolder]="'请选择'" [nzShowSearch]="true" class="myselect">
                        <nz-option >选项一</nz-option>
                    </nz-select>
                  </se>
    </div>
    <div class="right-box">
        <textarea cols="30" rows="10" (contextmenu)="myclick($event)">{{myData}}</textarea>
        <button id="btn" (click)="getData1()">上传文件</button>
        <select name="" id="">
          <option *ngFor="let i of myData2;let idx = index"  value="i.test"></option>
        </select>
    </div>
</div>
<div>

</div>