Angular 4: How to read content of text file with HTTPClient

Try like this :

this.http.get('app/files/1.txt').subscribe(data => {
    console.log(data.text());
})

The CLI can’t access docments inside the app directory your project. if you move to text document you can access the text file like assets/1.txt.

if you want to access document inside the app directory you need to add path in assets array in the .angular-cli.json

.angular-cli.json

"assets": [
  "assets",
  "app", /* add this line to access document inside the app directory */
  "favicon.ico"
]

here below is my example try like this :

this.http.get('app/home/1.txt').subscribe(data => {
    console.log('data', data.text());
})