英文:
go string handling and JSON
问题
新的Gopher在这里！
我正在使用Go语言处理一个REST API，并且现在正在解析我的第一个返回的JSON，但似乎遇到了一些问题。
首先，API调用的原始返回结果如下：
spew.Dump(body)
(string) (len=205) "{\"return\": {\n \"apiMajorVersion\": 3,\n \"apiMinorVersion\": 0,\n \"esmMajorVersion\": 9,\n \"esmMinorVersion\": 5,\n \"esmPatch\": \"MR7\",\n \"esmRevision\": 0,\n \"esmVersionString\": \"9.5.0 20150908\"\n}}"
字符串中嵌入了反斜杠和换行符。如果我打印它：
fmt.Println(body)
{"return": {
"apiMajorVersion": 3,
"apiMinorVersion": 0,
"esmMajorVersion": 9,
"esmMinorVersion": 5,
"esmPatch": "XX7",
"esmRevision": 0,
"esmVersionString": "9.5.0 20150908"
}}
然后我得到了有效的JSON。
如果我尝试将其解组为结构体，我无法正确地获取结构体中的值。
type ESMVersionStruct struct {
APIMajorVersion int8 `json:"return>apiMajorVersion"`
APIMinorVersion int8 `json:"apiMinorVersion"`
ESMMajorVersion int8 `json:"esmMajorVersion"`
ESMMinorVersion int8 `json:"esmMinorVersion"`
ESMPatch string `json:"esmPatch"`
ESMRevision int8 `json:"esmRevision"`
ESMVersionString string `json:"esmVersionString"`
}
我尝试过在返回中指定对象，也尝试过不指定。
jsonData := []byte(body)
var ESMVersion ESMVersionStruct
json.Unmarshal(jsonData, &ESMVersion)
fmt.Println(ESMVersion.APIMajorVersion)
fmt.Print(ESMVersion.APIMinorVersion)
最后两个都返回了空值。
提前感谢您对此问题的任何帮助！
英文:
New Gopher here!
I am working with a rest API in go, and I am now working on parsing out my first return JSON and seem to be having a bit of trouble.
First the raw return from the API call nets me this:
spew.Dump(body)
(string) (len=205) "{\"return\": {\n \"apiMajorVersion\": 3,\n \"apiMinorVersion\": 0,\n \"esmMajorVersion\": 9,\n \"esmMinorVersion\": 5,\n \"esmPatch\": \"MR7\",\n \"esmRevision\": 0,\n \"esmVersionString\": \"9.5.0 20150908\"\n}}"
With all the backslashes and newlines embedded in the string. If I print it
fmt.Println(body)
{"return": {
"apiMajorVersion": 3,
"apiMinorVersion": 0,
"esmMajorVersion": 9,
"esmMinorVersion": 5,
"esmPatch": "XX7",
"esmRevision": 0,
"esmVersionString": "9.5.0 20150908"
}}
Then I get valid json.
If I try and unmarshal it to the struct I don't get the values in the struct properly.
type ESMVersionStruct struct {
APIMajorVersion int8 `json:"return>apiMajorVersion"`
APIMinorVersion int8 `json:"apiMinorVersion"`
ESMMajorVersion int8 `json:"esmMajorVersion"`
ESMMinorVersion int8 `json:"esmMinorVersion"`
ESMPatch string `json:"esmPatch"`
ESMRevision int8 `json:"esmRevision"`
ESMVersionString string `json:"esmVersionString"`
}
I have tried both specifying the object in the return and not.
jsonData := []byte(body)
var ESMVersion ESMVersionStruct
json.Unmarshal(jsonData, &ESMVersion)
fmt.Println(ESMVersion.APIMajorVersion)
fmt.Print(ESMVersion.APIMinorVersion)
Both of the last two return the null value.
Thanks in advance for any help with this one!
答案1
得分: 2
你的类型应该是：
type ESMVersionStruct struct {
Return struct {
APIMajorVersion int8 `json:"apiMajorVersion"`
APIMinorVersion int8 `json:"apiMinorVersion"`
ESMMajorVersion int8 `json:"esmMajorVersion"`
ESMMinorVersion int8 `json:"esmMinorVersion"`
ESMPatch string `json:"esmPatch"`
ESMRevision int8 `json:"esmRevision"`
ESMVersionString string `json:"esmVersionString"`
} `json:"return"`
}
也就是说，你的结构体嵌套在另一个名为 Return 的结构体中。
英文:
Your type should be:
type ESMVersionStruct struct {
Return struct {
APIMajorVersion int8 `json:"apiMajorVersion"`
APIMinorVersion int8 `json:"apiMinorVersion"`
ESMMajorVersion int8 `json:"esmMajorVersion"`
ESMMinorVersion int8 `json:"esmMinorVersion"`
ESMPatch string `json:"esmPatch"`
ESMRevision int8 `json:"esmRevision"`
ESMVersionString string `json:"esmVersionString"`
} `json:"return"`
}
That is, your struct embedded in another Return struct.
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