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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