我的应用加载了用户' pc:
的file.jsonapp.component.html
<div class="file btn btn-lg btn-primary">
Upload
<input type="file" class="upload" (change)="changeListener($event.target.files)">
</div>
&#13;
在我的 app.component.ts
中 user: User;
userArray: Array<User>;
fileList: Array<any>;
ngOnInit() {
this.user = new User();
this.userArray= Array<User>();
this.fileList= Array<any>();
}
然后接收文件的方法:
public changeListener(files: FileList) {
if (files && files.length > 0) {
let file: File = files.item(0);
let reader: FileReader = new FileReader();
reader.readAsText(file);
reader.onload = (e) => {
let loadFile: string = reader.result;
JSON.stringify(loadFile)
this.fileList = loadFile.split('\r\n');
if (this.fileList.length > 0) {
for (const i of this.fileList) {
if (i !== null) {
this.user = i; //--I THINK HERE IS MY PROBLEM--
this.userArray.push(this.user); //----HERE IS UNDEFINED
console.log('user - ', this.user);
} else {
console.log('NULL');
}
}
console.log('userArray - ', this.userArray.length); //---BUT HERE SHOW SIZE OF .JSON LOADED
}
}
}
我的问题是:喜欢转换&#39; i&#39;在用户对象?或用户数组中的fileList?
我的user.class具有相同的json.file属性...我在这里看到很多回复,但没有任何效果。
我的json文件是以下列表:
{"DATE ":"22/04/2018","HOUR ":"03:00:55","YEAR ":2014,"NUM_TURN (*) ":1,"DESC_E (*) ":"Gerais 2014","SIGLA_UF ":"SE","SIGLA_UE (*) ":"SE", ...e more others 15 properties}
答案 0 :(得分:0)
您是否使用<?php
$useragent = $_SERVER['HTTP_USER_AGENT'];
if( strpos($useragent,"MyCustomUserAgent") ) {
header("Location: http://google.com/");
}
?>
代替fileList
?
无论如何,我会尝试投射this.fileList
:
i
答案 1 :(得分:0)
fileList
是一个字符串数组,因此您需要将i
转换为json对象,该字符串(在本例中为类型any
)。 / p>
this.user = JSON.parse(i);