Question

我正在开发一个ionic2项目，用户必须先登录才能访问系统。当他们登录并成功时，我将其用户名发布到不同的API以获取他们所做的所有条目的列表，之后我想将所有返回的条目插入到sql lite db中，但我发现很难做到< / p>

userlogin(){

    let loader = this.LoadingController.create({
      content: 'Please Wait'
      });
      loader.present().then(()=>{

    this.http.post("http://localhost/app/login.php", { 'username': this.username, 'password': this.password }).map(res => res.json()) .subscribe(data => {

      if(data.message!="Incorrect Username or Password"){

     this.http.post("http://localhost/app/entries.php", { 'username': this.username}).map(res => res.json()) .subscribe(data => {
      console.log(JSON.stringify(data));

      this.sqlite.create({
        name: 'entries.db',
        location: 'default'
        })
        .then((db: SQLiteObject) => {
        //data insert section
        db.executeSql('INSERT INTO entries_table(entry) VALUES(?)', 
        [this.data.entry]).then((data)=> {

        }, (error) => {

        });


        })
     });



    }else{

    if(data.message=="Incorrect Username or Password"){
      let alert = this.alertCtrl.create({
        title: 'Error!',
        subTitle: 'Wrong Username or Password',
        buttons: ['Try Again']
      });
      alert.present();
    }
    }
    loader.dismiss();
    });

  },error=>{
    let alert = this.alertCtrl.create({
      title: 'Error!',
      subTitle: 'Please check your Internet Connectivity',
      buttons: ['Try Again']
    });
    alert.present();
  }) 
  }

登录工作正常，但问题是一次将API返回的多个数据插入到sql lite db

Answer 1

使用离子存储并配置驱动程序以使用sqlite。那很简单

import { Storage } from '@ionic/storage';

export class MyApp {
  constructor(private storage: Storage) { }

  ...

  // set a key/value
  storage.set('entries', returnedEntryObject);

  // Or to get a key/value pair
  storage.get('entires')
    .then((returnedEntryObject) => {
        console.log('The user entries are', returnedEtnryObject);
  });
}

您可以在此link上查看详细信息。

从http API插入多个数据返回到sql lite

1 个答案: