How to validate a image url in golang?

Question

I want to validate a image url that my code will accept the that image url which having http and https if there is any other url is present that would not be accepted for example:-

fnc main(){
   var url1,url2,url3 string
   url1 = "/image.png" // not accepted
   url2 = "http://abc/image.jpg"  // accepted
   url3 = "https://abc/image.jpg" // accepted
}

What regular expression is used for this validation?

Possible duplicate of [Regex to check if valid URL that ends in .jpg, .png, or .gif](https://stackoverflow.com/questions/169625/regex-to-check-if-valid-url-that-ends-in-jpg-png-or-gif) — CallMeLoki, Nov 17 '18 at 07:23

score 2 · Accepted Answer · answered Nov 17 '18 at 05:59

2

If your criteria is just "having http", you can simply use the strings.HasPrefix:

if strings.HasPrefix(url1, "http://") || strings.HasPrefix(url1, "https://") {
    // Valid URL
}

However, you can use the url.Parse and check the scheme:

uri, err := url.Parse(url1)
if err != nil && uri.Scheme != "http" && uri.Scheme != "https" {
    // Error
}

// Valid URL

answered Nov 17 '18 at 05:59

Inkeliz

892
1
13
25

is there any regular expression for it? – user10665991 Nov 17 '18 at 06:42

user10730482 · Answer 2 · 2018-12-01T14:31:29.657

0

matched, err := regexp.MatchString("^http.*://", "https://www.google.com")

Goplayground Example

edited Dec 01 '18 at 14:31

answered Dec 01 '18 at 03:45

user10730482

1
1

How to validate a image url in golang?

2 Answers2