golang:Unmarshal:json:无法将数组解析为类型为main.MonitorServerInfo的Go值 [英] golang : Unmarshal: json: cannot unmarshal array into Go value of type main.MonitorServerInfo

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问题描述

json:无法将数组解析为Go类型的值

config json:

 < code $ {
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
}



和我的golang代码是这样的:

  type ServerInfo struct {
主机字符串`json:host`
端口int64`json:port`
魔术字符串`json:magic`
Params string`json :params`
Interval int64`json:interval`
}

类型ServerInfoStrap结构{
ConnInfo ServerInfo`json:server_info`


类型MonitorServerInfo结构{
服务器[] ServerInfoStrap
}

类型SentryServer结构{
主机字符串`json:主机
Port int64`json:port`
}

类型ConfigServer结构{
ServerInfo MonitorServerInfo`json:monitor_servers_info`
ConnServer SentryServer`json:sentry_server`
DeadTime字符串`json:deadtime`
}



json解析代码:

  func readFile(文件名字符串)(config ConfigServer,err error){ 
字节,err:= ioutil.ReadFile(文件名)
if err!= nil {
fmt.Println(ReadFile:,err.Error())
return
}

//字节,err = StripComments(字节)//去掉注释
//如果err!= nil {
// log.Info(Failed从json中删除注释:%s \ n,err)
// return
//}
$ b // b:// 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
}


解决方案

您的 MonitorServerInfo 类型是问题的原因。

 类型ConfigServer结构{
ServerInfo [] ServerInfoStrap`json:monitor_servers_info '
ConnServer SentryServer`json:sentry_server`
DeadTime字符串`json:deadtime`
}

游乐场: https://play.golang.org/p / Prt1j7ePCZ

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
}

解决方案

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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