英文:
Handling dynamic JSON schema decoding
问题
我有一个Go HTTP客户端，用于发送/解析JSON-RPC请求。
HTTP POST请求：
[
{"id":"1", "method":"action1","params":[]},
{"id":"2", "method":"action2","params":[]},
...
{"id":"X", "method":"actionX","params":[]}
]
HTTP响应：
[
{"id":"1", "error":null, "result":{...}},
{"id":"2", "error":null, "result":{...}},
...
{"id":"X", "error":null, "result":{...}}
]
如何处理那些result键是一个具有动态模式的对象的有效负载，该模式取决于id键的值。
英文:
I have a Go HTTP client which sends/parses JSON-RPC requests.
HTTP POST Request :
[
{"id":"1", "method":"action1","params":[]},
{"id":"2", "method":"action2","params":[]},
...
{"id":"X", "method":"actionX","params":[]}
]
HTTP response :
[
{"id":"1", "error":null, "result":{...}},
{"id":"2", "error":null, "result":{...}},
...
{"id":"X", "error":null, "result":{...}}
]
How to handle those payloads where the result key is an object with dynamic schema depending on the value of the key id.
答案1
得分: 2
你可以通过将结果解组为json.RawMessage，来指示json库不解组结果字段。在这种情况下，将响应解组为一个切片：
type result struct{
ID string `json:"id"`
Err *string `json:"error"` // 可能是一个字符串？
Result json.RawMessage `json:"result"`
}
然后，当你知道要处理的ID时，你可以将result.ID解组为另一个具有你期望的结构的结构体。
英文:
You can instruct the json library not to unmarshal the result field by unmarshaling the result into a json.RawMessage, in this case unmarshal the response into a slice of:
type result struct{
ID string `json:"id"`
Err *string `json:"error"` // maybe a string?
Result json.RawMessage `json:"result"`
}
Then when you know which ID you are dealing with you can unmarshal result.ID into another struct with the structure you expect.
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