我有一个从我的API获取的列表,如:
{
"content": [
{
"trainingClassId": 1,
"examCode": "my exam 1",
"address": {
"addressId": 1,
"addressValue": "abc 1213"
},
"description": "only test",
"classId": null,
"startDate": 1511110800000,
"endDate": 1513702800000,
"examDate": 1511542800000
},
{
"trainingClassId": 2,
"examCode": "my exam 2",
"address": {
"addressId": 1,
"addressValue": "abc 1213"
},
"description": "only test",
"classId": null,
"startDate": 1511110800000,
"endDate": 1513702800000,
"examDate": 1511542800000
}
],
"last": true,
"totalElements": 2,
"totalPages": 1,
"size": 20,
"number": 0,
"first": true,
"sort": null,
"numberOfElements": 2
}
我想将long转换为long,所以我创建了一个绑定数据的对象:
export class myApp {
id: number;
classId: string;
trainingDate: string;
examDate: string;
}
on ts:
listData = new Array();
app_unit:myApp= new myApp();
listApp:any[];
ngOnInit() {
this.getAllTrainingClass();
}
async getAllTrainingClass(): Promise<void>{
await this.traningClassService.getdata().then(data =>this.listApp = data);
for(let ls of this.listApp){
this.app_unit.classId= ls.classId;
this.app_unit.examDate=this.convertTimestampToDate(ls.examDate);
this.app_unit.trainingDate=this.convertTimestampToDate(ls.startDate) +'-'+this.convertTimestampToDate(ls.endDate) ;
this.listData.push(this.app_unit);
}
控制台日志有2个项目,但它是最新的项目,如:
{0:对myApp ID:2 CLASSID:空 examDate:&#34; 05/01/2018&#34; trainingDate:&#34; 05/11 / 2017-31 /二千零十七分之十二&#34; }, {1:对myApp ID:2 CLASSID:空 examDate:&#34; 05/01/2018&#34; trainingDate:&#34; 05/11 / 2017-31 /二千零十七分之十二&#34;}
请告诉我。答案 0 :(得分:1)
问题是因为&#34; this.app_unit&#34;指向相同的内存位置,您将相同的对象插入到数组中,所有对象都指向相同的内存位置。
Put,
var app_unit:myApp= new myApp();
在for循环中。 因此,每个循环都会创建一个新的对象实例。