上golang之前捕获错误

Question

I have the following code and when the attribute debug is missing the program crashed with error which difficult to understand. I want to catch this error and provide better message but what I’ve tried is not working I want to avoid.

var jsonParsedApp *gabs.Container = nil    

debug := jsonParsedApp.Path("debug").Data()
//This is what I’ve tried
if debug == nil {
    log.Println(“Property debug is missing “)
}

Answer 1

There is an Exists method

if jsonParsedApp.Exists("debug") {
    // you can safely read it here
}

References:

• https://github.com/Jeffail/gabs/blob/master/gabs.go#L129