package tool import ( "fmt" "testing" ) func TestBase64DecodeString(t *testing.T) { str := "OTEuMjA2LjkyLjM4OjI5MzE6b3JpZ2luOnJjNDpwbGFpbjpiRzVqYmk1dmNtY2dNak5zLz9vYmZzcGFyYW09JnJlbWFya3M9NTctNzVhS1o1WVdhWm1GdWNXbGhibWRrWVc1bkxtTnZiUSY9NUwtRTZMLWM1TGljUkEmZ3JvdXA9NTctNzVhS1o1WVdhWm1GdWNXbGhibWRrWVc1bkxtTnZiUSY9VEc1amJpNXZjbWM" fmt.Println(Base64DecodeString(str)) fmt.Println(string([]byte(str)[232])) }