SyntaxError: Unexpected token C in JSON at position 0 - Ionic 2 Http GET request

问题

I am trying to perform a GET request and retrieve the data from the response.

this.http.get('http://localhost:8888/maneappback/more-items.php').subscribe(res => {
    console.log(res.json());
}, (err) => {
    console.log(err);
});

I am getting the error SyntaxError: Unexpected token C in JSON at position 0. I am also assuming that the error is related to the request.

On my server side, I have the data being sent like this (PHP):

echo json_encode($array);

回答1:

The message you see is that your JSON response is not formatted correctly

GOOD JSON:

{ "name":"John", "age":31, "city":"New York" }

BAD JSON

{ 'name': 'john' }

OR

{ 'name' = 'john' }

In your case, the JSON begins with character C

回答2:

I was just neglecting to realize that I still had two echo statements in the script...that is why it wasn't recognized as JSON.

回答3:

in my case:

previous with error: JSON.parse("{ createdTimestamp: -1 }")

and correct: JSON.parse('{"createdTimestamp":-1}')

来源：https://stackoverflow.com/questions/44348556/syntaxerror-unexpected-token-c-in-json-at-position-0-ionic-2-http-get-request