英文:
golang : Unmarshal: json: cannot unmarshal array into Go value of type main.MonitorServerInfo
问题
json：无法将数组解组为Go类型的值
json配置：
{
"monitor_servers_info": [
{
"server_info": {
"host": "127.0.0.1",
"port": 28081,
"magic": "magic0",
"params": "all",
"interval": 10000
}
},
{
"server_info": {
"host": "127.0.0.1",
"port": 28080,
"magic": "magic1",
"params": "all",
"interval": 10000
}
}
],
"sentry_server": {"host": "127.0.0.1","port": 80},"deadtime": "110000"
}
我的Golang代码如下：
type ServerInfo struct {
Host string json:"host"
Port int64 json:"port"
Magic string json:"magic"
Params string json:"params"
Interval int64 json:"interval"
}
type ServerInfoStrap struct {
ConnInfo ServerInfo json:"server_info"
}
type MonitorServerInfo struct {
Servers []ServerInfoStrap
}
type SentryServer struct {
Host string json:"host"
Port int64 json:"port"
}
type ConfigServer struct {
ServerInfo MonitorServerInfo json:"monitor_servers_info"
ConnServer SentryServer json:"sentry_server"
DeadTime string json:"deadtime"
}
JSON解析代码：
func readFile(filename string) (config ConfigServer, err error) {
bytes, err := ioutil.ReadFile(filename)
if err != nil {
fmt.Println("ReadFile: ", err.Error())
return
}
//bytes, err = StripComments(bytes) //去掉注释//if err != nil {// log.Info("Failed to strip comments from json: %s\n", err)// return//}//xxx := make(map[string]interface{})fmt.Println(string(bytes))err = json.Unmarshal(bytes, &config)if err != nil {fmt.Println("Unmarshal: ", err.Error())return}fmt.Println(config)return
}
英文:
json: cannot unmarshal array into Go value of type
config json:
{"monitor_servers_info":[{"server_info":{"host":"127.0.0.1","port":28081,"magic":"magic0","params":"all","interval":10000}},{"server_info":{"host":"127.0.0.1","port":28080,"magic":"magic1","params":"all","interval":10000}}],"sentry_server":{"host":"127.0.0.1","port":80},"deadtime":"110000"}
and my golang code like this:
type ServerInfo struct {Host string `json:"host"`Port int64 `json:"port"`Magic string `json:"magic"`Params string `json:"params"`Interval int64 `json:"interval"`}type ServerInfoStrap struct {ConnInfo ServerInfo `json:"server_info"`}type MonitorServerInfo struct {Servers []ServerInfoStrap}type SentryServer struct {Host string `json:"host"`Port int64 `json:"port"`}type ConfigServer struct {ServerInfo MonitorServerInfo `json:"monitor_servers_info"`ConnServer SentryServer `json:"sentry_server"`DeadTime string `json:"deadtime"`}
json parse code :
func readFile(filename string) (config ConfigServer, err error) {bytes, err := ioutil.ReadFile(filename)if err != nil {fmt.Println("ReadFile: ", err.Error())return}//bytes, err = StripComments(bytes) //去掉注释//if err != nil {// log.Info("Failed to strip comments from json: %s\n", err)// return//}//xxx := make(map[string]interface{})fmt.Println(string(bytes))err = json.Unmarshal(bytes, &config)if err != nil {fmt.Println("Unmarshal: ", err.Error())return}fmt.Println(config)return}
答案1
得分: 3
你的MonitorServerInfo类型是问题的原因。去掉它就可以解决问题：
type ConfigServer struct {ServerInfo []ServerInfoStrap `json:"monitor_servers_info"`ConnServer SentryServer `json:"sentry_server"`DeadTime string `json:"deadtime"`}
Playground链接：https://play.golang.org/p/Prt1j7ePCZ。
英文:
Your MonitorServerInfo type is the cause of the problem. Get rid of it and it works:
type ConfigServer struct {ServerInfo []ServerInfoStrap `json:"monitor_servers_info"`ConnServer SentryServer `json:"sentry_server"`DeadTime string `json:"deadtime"`}
Playground: https://play.golang.org/p/Prt1j7ePCZ.
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