英文:
Unmarshal JSON data of unknown format
问题
我的JSON数据格式如下：
{
'Math': [
{'Student1': 100.0, 'timestamp': Timestamp('2017-06-26 15:30:00'), 'Student2': 100.0, 'Student3': 97.058823442402414},
{'Student1': 93.877550824911907, 'timestamp': Timestamp('2017-06-26 15:31:00'), 'Student2': 100.0, 'Student5': 100.0},
{'Student8': 100.0, 'timestamp': Timestamp('2017-06-26 15:32:00'), 'Student10': 100.0, 'Student4': 100.0}
],
'English': [
{'Student1': 100.0, 'timestamp': Timestamp('2017-06-26 15:30:00'), 'Student5': 100.0, 'Student3': 97.058823442402414},
{'Student1': 93.877550824911907, 'timestamp': Timestamp('2017-06-26 15:31:00'), 'Student2': 100.0, 'Student5': 100.0},
{'Student8': 100.0, 'timestamp': Timestamp('2017-06-26 15:32:00'), 'Student10': 100.0, 'Student4': 100.0}
]
}
对于我来说，键名是完全未知的。我只知道JSON的格式如下：
{
SUBJECT1: [{Student_Name1: Grade, Student_Name2: Grade, ... , Student_Name3: Grade, timestamp: Timestamp(...)}],
SUBJECT2: [{Student_Name4: Grade, Student_Name6: Grade, ... , Student_Name5: Grade, timestamp: Timestamp(...)}],
...
SUBJECTN: [{Student_Name1: Grade, Student_Name6: Grade, ... , Student_Name9: Grade, timestamp: Timestamp(...)}]
}
其中，subjects和student_names都是未知的，可能会有所变化。
我想将其解组为一个GoLang结构体，以便将其作为JSON对象返回给前端。我的结构体应该是什么样子？这是我尝试过的，但它没有起作用。
type GradeData struct {
Grades map[string]interface{} `json:"-"`
}
请注意，我只提供了翻译服务，不会回答关于翻译的问题。
英文:
My JSON is in the following format:
{
'Math':
[
{'Student1': 100.0, 'timestamp': Timestamp('2017-06-26 15:30:00'), 'Student2': 100.0, 'Student3': 97.058823442402414},
{'Student1': 93.877550824911907, 'timestamp': Timestamp('2017-06-26 15:31:00'), 'Student2': 100.0, 'Student5': 100.0},
{'Student8': 100.0, 'timestamp': Timestamp('2017-06-26 15:32:00'), 'Student10': 100.0, 'Student4': 100.0}
],
'English': [
{'Student1': 100.0, 'timestamp': Timestamp('2017-06-26 15:30:00'), 'Student5': 100.0, 'Student3': 97.058823442402414},
{'Student1': 93.877550824911907, 'timestamp': Timestamp('2017-06-26 15:31:00'), 'Student2': 100.0, 'Student5': 100.0},
{'Student8': 100.0, 'timestamp': Timestamp('2017-06-26 15:32:00'), 'Student10': 100.0, 'Student4': 100.0}
]
}
The keys are completely unknown to me. All I know is that the JSON will be of the format:
{
SUBJECT1: [{Student_Name1: Grade, Student_Name2: Grade, ... , Student_Name3: Grade, timestamp: Timestamp(...)}],
SUBJECT2: [{Student_Name4: Grade, Student_Name6: Grade, ... , Student_Name5: Grade, timestamp: Timestamp(...)}]
...
SUBJECTN: [{Student_Name1: Grade, Student_Name6: Grade, ... , Student_Name9: Grade, timestamp: Timestamp(...)}]
}
where the subjects, student_names are all unknown and could vary.
I want to unmarshal this into a GoLang struct so I can return it to my front-end as a JSON object. What should my struct look like? This is what I tried, but it didn't work.
type GradeData struct {
Grades map[string]interface{} `json:"-"`
}
答案1
得分: 11
- 如果你不知道键的情况下，可以使用
map[string]interface{}来解析你的JSON数据。 - 如果你在
struct字段上使用json:"-"标签，这些字段在JSON的编组/解组过程中将被忽略。
你可以尝试以下选项：Go Playground链接
选项1：
var grades map[string]interface{}
err := json.Unmarshal([]byte(jsonString), &grades)
fmt.Println(err)
fmt.Printf("%#v\n", grades)
选项2： 如果你想使用struct
var gradesData GradeData
err := json.Unmarshal([]byte(jsonString), &gradesData.Grades)
fmt.Println(err)
fmt.Printf("%#v\n", gradesData)
英文:
- If you don't know the keys, you can use
map[string]interface{}to unmarshal your JSON payload. - If you use
json:"-"tag for thestructfields, those fields will be ignored during JSON Marshal/Unmarshal.
You can try following options: Go Playground link
Option 1:
var grades map[string]interface{}
err := json.Unmarshal([]byte(jsonString), &grades)
fmt.Println(err)
fmt.Printf("%#v\n", grades)
Option 2: if you want have struct
var gradesData GradeData
err := json.Unmarshal([]byte(jsonString), &gradesData.Grades)
fmt.Println(err)
fmt.Printf("%#v\n", gradesData)
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