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Golang 解析带有未知键的 JSON

来源：stackoverflow 2024-04-18 22:42:25 0浏览收藏

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问题内容

我正在尝试使用结构体的动态字段键来解组 json 该 json 从 linux 的 storcli 实用程序返回。代码的一部分运行良好，但如果 json 数据包含许多结构，我无法对其进行解组。我认为这是因为 drivedetailedinformation 结构没有所有 json 标签。有人可以帮助我吗？

package main

import (
    "fmt"
    "encoding/json"
)

type jsonStruct struct {
    Controllers []struct {
        CommandStatus struct {
            Controller  int    `json:"Controller"`
            Status      string `json:"Status"`
            Description string `json:"Description"`
        } `json:"Command Status"`
        ResponseData map[string]*json.RawMessage `json:"Response Data"`
    } `json:"Controllers"`
}

type DriveStruct struct {
    EIDSlt string `json:"EID:Slt"`
    DID    int    `json:"DID"`
    State  string `json:"State"`
    DG     int    `json:"DG"`
    Size   string `json:"Size"`
    Intf   string `json:"Intf"`
    Med    string `json:"Med"`
    SED    string `json:"SED"`
    PI     string `json:"PI"`
    SeSz   string `json:"SeSz"`
    Model  string `json:"Model"`
    Sp     string `json:"Sp"`
}

type DriveDetailedInformation struct {
    DriveState            map[string]DriveStateStruct
    DriveDeviceAttributes map[string]DriveDeviceAttributesStruct
    DrivePoliciesSettings map[string]DrivePoliciesSettingsStruct
    InquiryData           string `json:"Inquiry Data"`
}

type DriveStateStruct struct {
    ShieldCounter            int    `json:"Shield Counter"`
    MediaErrorCount          int    `json:"Media Error Count"`
    OtherErrorCount          int    `json:"Other Error Count"`
    BBMErrorCount            int    `json:"BBM Error Count"`
    DriveTemperature         string `json:"Drive Temperature"`
    PredictiveFailureCount   int    `json:"Predictive Failure Count"`
    SMARTAlertFlaggedByDrive string `json:"S.M.A.R.T alert flagged by drive"`
}

type DriveDeviceAttributesStruct struct {
    SN               string `json:"SN"`
    ManufacturerID   string `json:"Manufacturer Id"`
    ModelNumber      string `json:"Model Number"`
    NANDVendor       string `json:"NAND Vendor"`
    WWN              string `json:"WWN"`
    FirmwareRevision string `json:"Firmware Revision"`
    RawSize          string `json:"Raw size"`
    CoercedSize      string `json:"Coerced size"`
    NonCoercedSize   string `json:"Non Coerced size"`
    DeviceSpeed      string `json:"Device Speed"`
    LinkSpeed        string `json:"Link Speed"`
    NCQSetting       string `json:"NCQ setting"`
    WriteCache       string `json:"Write cache"`
    SectorSize       string `json:"Sector Size"`
    ConnectorName    string `json:"Connector Name"`
}

type DrivePoliciesSettingsStruct struct {
    DrivePosition                            string `json:"Drive position"`
    EnclosurePosition                        int    `json:"Enclosure position"`
    ConnectedPortNumber                      string `json:"Connected Port Number"`
    SequenceNumber                           int    `json:"Sequence Number"`
    CommissionedSpare                        string `json:"Commissioned Spare"`
    EmergencySpare                           string `json:"Emergency Spare"`
    LastPredictiveFailureEventSequenceNumber int    `json:"Last Predictive Failure Event Sequence Number"`
    SuccessfulDiagnosticsCompletionOn        string `json:"Successful diagnostics completion on"`
    SEDCapable                               string `json:"SED Capable"`
    SEDEnabled                               string `json:"SED Enabled"`
    Secured                                  string `json:"Secured"`
    Locked                                   string `json:"Locked"`
    NeedsEKMAttention                        string `json:"Needs EKM Attention"`
    PIEligible                               string `json:"PI Eligible"`
    Certified                                string `json:"Certified"`
    WidePortCapable                          string `json:"Wide Port Capable"`
    PortInformation                          []struct {
        Port       int    `json:"Port"`
        Status     string `json:"Status"`
        Linkspeed  string `json:"Linkspeed"`
        SASAddress string `json:"SAS address"`
    } `json:"Port Information"`
}

var jsonData = `
{
   "Controllers":[
      {
         "Command Status":{
            "Controller":0,
            "Status":"Success",
            "Description":"Show Drive Information Succeeded."
         },
         "Response Data":{
            "Drive /c0/e31/s0":[
               {
                  "EID:Slt":"31:0",
                  "DID":19,
                  "State":"Onln",
                  "DG":0,
                  "Size":"9.094 TB",
                  "Intf":"SATA",
                  "Med":"HDD",
                  "SED":"N",
                  "PI":"N",
                  "SeSz":"512B",
                  "Model":"ST10000DM0004-1ZC101",
                  "Sp":"U"
               }
            ],
            "Drive /c0/e31/s0 - Detailed Information":{
               "Drive /c0/e31/s0 State":{
                  "Shield Counter":0,
                  "Media Error Count":0,
                  "Other Error Count":0,
                  "BBM Error Count":0,
                  "Drive Temperature":" 25C (77.00 F)",
                  "Predictive Failure Count":0,
                  "S.M.A.R.T alert flagged by drive":"No"
               },
               "Drive /c0/e31/s0 Device attributes":{
                  "SN":"            ZA23V0DH",
                  "Manufacturer Id":"ATA     ",
                  "Model Number":"ST10000DM0004-1ZC101",
                  "NAND Vendor":"NA",
                  "WWN":"5000c500a5ad06b6",
                  "Firmware Revision":"DN01    ",
                  "Raw size":"9.095 TB [0x48c400000 Sectors]",
                  "Coerced size":"9.094 TB [0x48c300000 Sectors]",
                  "Non Coerced size":"9.094 TB [0x48c300000 Sectors]",
                  "Device Speed":"6.0Gb/s",
                  "Link Speed":"6.0Gb/s",
                  "NCQ setting":"N/A",
                  "Write cache":"N/A",
                  "Sector Size":"512B",
                  "Connector Name":""
               },
               "Drive /c0/e31/s0 Policies/Settings":{
                  "Drive position":"DriveGroup:0, Span:0, Row:0",
                  "Enclosure position":0,
                  "Connected Port Number":"0(path0) ",
                  "Sequence Number":2,
                  "Commissioned Spare":"No",
                  "Emergency Spare":"No",
                  "Last Predictive Failure Event Sequence Number":0,
                  "Successful diagnostics completion on":"N/A",
                  "SED Capable":"No",
                  "SED Enabled":"No",
                  "Secured":"No",
                  "Locked":"No",
                  "Needs EKM Attention":"No",
                  "PI Eligible":"No",
                  "Certified":"No",
                  "Wide Port Capable":"No",
                  "Port Information":[
                     {
                        "Port":0,
                        "Status":"Active",
                        "Linkspeed":"6.0Gb/s",
                        "SAS address":"0x5003048001927c6c"
                     }
                  ]
               },
               "Inquiry Data":""
            },
            "Drive /c0/e31/s1":[
               {
                  "EID:Slt":"31:1",
                  "DID":20,
                  "State":"Onln",
                  "DG":0,
                  "Size":"9.094 TB",
                  "Intf":"SATA",
                  "Med":"HDD",
                  "SED":"N",
                  "PI":"N",
                  "SeSz":"512B",
                  "Model":"ST10000DM0004-1ZC101",
                  "Sp":"U"
               }
            ],
            "Drive /c0/e31/s1 - Detailed Information":{
               "Drive /c0/e31/s1 State":{
                  "Shield Counter":0,
                  "Media Error Count":0,
                  "Other Error Count":0,
                  "BBM Error Count":0,
                  "Drive Temperature":" 25C (77.00 F)",
                  "Predictive Failure Count":0,
                  "S.M.A.R.T alert flagged by drive":"No"
               },
               "Drive /c0/e31/s1 Device attributes":{
                  "SN":"            ZA23MCVS",
                  "Manufacturer Id":"ATA     ",
                  "Model Number":"ST10000DM0004-1ZC101",
                  "NAND Vendor":"NA",
                  "WWN":"5000c500a5acc582",
                  "Firmware Revision":"DN01    ",
                  "Raw size":"9.095 TB [0x48c400000 Sectors]",
                  "Coerced size":"9.094 TB [0x48c300000 Sectors]",
                  "Non Coerced size":"9.094 TB [0x48c300000 Sectors]",
                  "Device Speed":"6.0Gb/s",
                  "Link Speed":"6.0Gb/s",
                  "NCQ setting":"N/A",
                  "Write cache":"N/A",
                  "Sector Size":"512B",
                  "Connector Name":""
               },
               "Drive /c0/e31/s1 Policies/Settings":{
                  "Drive position":"DriveGroup:0, Span:0, Row:1",
                  "Enclosure position":0,
                  "Connected Port Number":"0(path0) ",
                  "Sequence Number":2,
                  "Commissioned Spare":"No",
                  "Emergency Spare":"No",
                  "Last Predictive Failure Event Sequence Number":0,
                  "Successful diagnostics completion on":"N/A",
                  "SED Capable":"No",
                  "SED Enabled":"No",
                  "Secured":"No",
                  "Locked":"No",
                  "Needs EKM Attention":"No",
                  "PI Eligible":"No",
                  "Certified":"No",
                  "Wide Port Capable":"No",
                  "Port Information":[
                     {
                        "Port":0,
                        "Status":"Active",
                        "Linkspeed":"6.0Gb/s",
                        "SAS address":"0x5003048001927c6d"
                     }
                  ]
               },
               "Inquiry Data":""
            }
         }
      }
   ]
}
`

func main() {
    var f jsonStruct
    err := json.Unmarshal([]byte(jsonData), &f)
    if err != nil {
        fmt.Println("Error parsing JSON: ", err)
    }

    for _, controller := range f.Controllers {
        for k, v := range controller.ResponseData {

            ///THAT IS WORK
            var ds []DriveStruct
            if err := json.Unmarshal(*v, &ds); err == nil {
                fmt.Println(k, ds)

            }

            ///THAT IS NOT WORK WHY?
            var dds DriveDetailedInformation
            if err := json.Unmarshal(*v, &dds); err == nil {
                fmt.Println(k, dds)
            }
        }
    }
}

解决方案

因为你的键值不正确。下面是我修改的代码。

type DriveDetailedInformation struct {
DriveState            DriveStateStruct `json:"Drive /c0/e31/s0 State"`
DriveDeviceAttributes DriveDeviceAttributesStruct `json:"Drive /c0/e31/s0 Device attributes"`
DrivePoliciesSettings DrivePoliciesSettingsStruct `json:"Drive /c0/e31/s0 Policies/Settings"`
InquiryData           string `json:"Inquiry Data"`
}

type DriveDetailedInformation1 struct {
    DriveState            DriveStateStruct `json:"Drive /c0/e31/s1 State"`
    DriveDeviceAttributes DriveDeviceAttributesStruct `json:"Drive /c0/e31/s1 Device attributes"`
    DrivePoliciesSettings DrivePoliciesSettingsStruct `json:"Drive /c0/e31/s1 Policies/Settings"`
    InquiryData           string `json:"Inquiry Data"`
}
func main() {
    var f jsonStruct
    err := json.Unmarshal([]byte(jsonData), &f)
    if err != nil {
        fmt.Println("Error parsing JSON: ", err)
    }

    for _, controller := range f.Controllers {
        for k, v := range controller.ResponseData {
            switch k {
            case "Drive /c0/e31/s0","Drive /c0/e31/s1":
                var ds []DriveStruct
                if err := json.Unmarshal(*v, &ds); err == nil {
                    fmt.Println(k, ds)
                }
            case "Drive /c0/e31/s1 - Detailed Information":
                var dds1 DriveDetailedInformation1
                if err := json.Unmarshal(*v, &dds1); err == nil {
                    fmt.Println(k, dds1)
                }
            case "Drive /c0/e31/s0 - Detailed Information":
                var dds DriveDetailedInformation
                if err := json.Unmarshal(*v, &dds); err == nil {
                    fmt.Println(k, dds)
                }
            }
        }
    }
}

我认为响应数据可以在结构中解析。

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