go - panic : runtime error: index out of range 1

Question

我无法弄清楚这个问题，任何人都可以帮忙吗？

panic :运行时错误:索引超出范围

goroutine 1 [正在运行]:主.main() /root/go/src/k8s.io/client-go/examples/in-cluster-client-configuration/test_json.go:15 +0x42

type obj struct {
    Targets [2]string  `json:"targets"`
    Labels  map[string]string `json:"labels"`
}

func main() {
    // Creating simulation
    var myobj = []*obj{}
    n := new(obj)
    myobj[0].Targets = [2]string{"10.0.0.1", "10.0.0.2"}
    myobj[0].Labels = make(map[string]string)
    myobj[0].Labels["job"] = "db2"
    myobj = append(myobj, n)
    k := new(obj)
    myobj[1].Targets = [2]string{"192.168.1.12", "192.168.1.13"}
    myobj[1].Labels = make(map[string]string)
    myobj[1].Labels["job"] = "mysql"
    myobj = append(myobj, k)

    // Converting to JSON, for transmission over web
    data, err := json.Marshal(myobj)
    if err != nil {
        fmt.Println(err)
        return
    }

Answer 1

您创建了一个obj n，然后在尝试附加它之前什么都不做。所以 myobj 中还没有 obj。

var myobj = []*obj{}
n := new(obj)
n.Targets = [2]string{"10.0.0.1", "10.0.0.2"}
n.Labels = make(map[string]string)
n.Labels["job"] = "db2"
myobj = append(myobj, n)
k := new(obj)
k.Targets = [2]string{"192.168.1.12", "192.168.1.13"}
k.Labels = make(map[string]string)
k.Labels["job"] = "mysql"
myobj = append(myobj, k)