英文:
How to parse JSON-RPC table with different type
问题
我想要使用以下结构从JSON-RPC文件中获取信息：
{
"id": "foo1",
"error": null,
"result": [
{
"key": [
"hello 1",
1,
"world 1"
],
"val": {
"type": "static"
}
},
{
"key": [
"hello 2",
1,
"world 2"
],
"val": {
"type": "static"
}
}
]
}
这是我的解析函数，其中Key是字符串数组（不能接受int类型）：
type JsonRpcRsp struct {
Id string `json:"id"`
Error *string `json:"error"`
Result json.RawMessage `json:"result"`
}
type JsonRpcEntry_Val struct {
Type string `json:"type"`
}
type JsonRpcEntry struct {
Key [3]string `json:"key"`
Val JsonRpcEntry_Val `json:"val"`
}
jsonResult := JsonRpcRsp{}
json.Unmarshal(data, &jsonResult)
entries := []JsonRpcEntry{}
for _, val := range jsonResult {
json.Unmarshal(val.Result, &entries)
}
如何解析"key"数组？问题在于它包含不同类型的元素。
"key"数组的结构如下：
[<string>, <int>, <string>]
英文:
I want get informations in JSON-RPC file with this structure :
{
"id": "foo1",
"error": null,
"result": [
{
"key": [
"hello 1",
1,
"world 1"
],
"val": {
"type": "static"
}
},
{
"key": [
"hello 2",
1,
"world 2"
],
"val": {
"type": "static"
}
}
]
}
This is my parsing function, Key is string table (can't accept int type) :
type JsonRpcRsp struct {
Id string `json:"id"`
Error *string `json:"error"`
Result json.RawMessage `json:"result"`
}
type JsonRpcEntry_Val struct {
Type string `json:"type"`
}
type JsonRpcEntry struct {
Key [3]string `json:"key"`
Val JsonRpcEntry_Val `json:"val"`
}
jsonResult := JsonRpcRsp{}
json.Unmarshal(data, &jsonResult)
entries := []JsonRpcEntry{}
for _, val := range jsonResult {
json.Unmarshal(val.Result, &entries)
}
How to parse "key" table ?... problem is there are different types
key table structure is :
[ <string>, <int>, <string>]
答案1
得分: 2
在Go语言中，要解组不同类型的数组，你需要使用接口和类型断言（type assertions），如果你需要访问这些类型。
以下代码可以帮助你实现这一目标：
type Result struct {
Key [3]interface{} `json:"key"`
Val struct {
Type string `json:"type"`
} `json:"val"`
}
msg := JsonRpcRsp{}
json.Unmarshal(data, &msg)
var result []Result
json.Unmarshal(msg.Result, &result)
for _, v := range result {
key1 := v.Key[0].(string)
key2 := v.Key[1].(float64)
key3 := v.Key[2].(string)
fmt.Println(key1, key2, key3)
}
在对这三个接口进行类型断言后，你可以根据具体的使用情况进一步处理它们。
英文:
To unmarshal arrays of different types in Go you'll need to use interfaces and consequently type assertions if you need access to the types.
This will work for you:
type Result struct {
Key [3]interface{} `json:"key"`
Val struct {
Type string `json:"type"`
} `json:"val"`
}
msg := JsonRpcRsp{}
json.Unmarshal(data, &msg)
var result []Result
json.Unmarshal(msg.Result, &result)
for _, v := range result {
key1 := v.Key[0].(string)
key2 := v.Key[1].(float64)
key3 := v.Key[2].(string)
fmt.Println(key1, key2, key3)
}
After asserting the three interfaces to their types, you can then work with them further, depending on your use case.
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