json.unmarshal（）-返回nil

Question

I get normal slice a bytes from base (slice maked by json.Marshal) and try decode them, but json.unmarshal() - return nil

Code :

coded := redis.LoadFromBase()
uncoded := json.Unmarshal(coded, &p)

fmt.Println("Bytes:", coded)
fmt.Println("Unmarshalled:", uncoded)

Returned:

Bytes: [123 34 84 105 116 108 101 34 58 34 97 34 44 34 67 111 110 116 101 110 116 34 58 34 98 34 125]
Unmarshalled: <nil>

LoadFromBase() works fine

Answer 1

You are printing the error returned by json.Unmarshal not the actual decoded value. It is nil so everything is fine.

It should be:

coded := redis.LoadFromBase()
err := json.Unmarshal(coded, &p)
if (err != nil) {
    // handle error here
}

fmt.Println("Bytes:", coded)
fmt.Println("Unmarshalled:", p)