Golang - 解析嵌套的JSON [英] Golang - Parsing nested JSON

问题描述

我正在使用去工作人员处理重新执行作业。一个作业有一个有效载荷，它具有如下的嵌套JSON结构： val-a，
key-b：val-b，
files：[{
key-a：[
{a ：b，c：d}，
{e：f，g：h}
]，
key-b ：[
{a：b，c：d}，
{e：f，g：h}
]
}]
}]

现在 go -worker 给我 args ... interface {} ，它代表JSON有效负载，而不是实际的JSON文本。有没有一种习惯的方式将（ args ）转换为正确的类型（可以使用另一个包来完成此操作）。手动使用类型断言似乎对于这样的事情有点乏味。

解决方案

如果它真的给你实际的去对象（即一堆 map [string]接口{} 而不是json字符串本身），那么除了一些类型断言之外，你可以做的事情也不多。

你可以重新编组为json然后再解析它到正确的结构中，但这有点破解（我不知道它是否会高性能）。

I'm using the go-worker to process resque jobs. A job has a payload which has a nested JSON structure like this:

[{
  "key-a":"val-a",
  "key-b":"val-b",
  "files":[{
    "key-a": [
      {"a":"b","c": "d"},
      {"e":"f","g": "h"}
    ],
    "key-b": [
      {"a":"b","c": "d"},
      {"e":"f","g": "h"}
    ]
  }]
}]

Now go-worker gives me args ...interface{} which represents that JSON payload, not the actual JSON text. Is there an idiomatic way to convert that(args) to the correct types (could use another package to do this.) Using type assertions manually seems a bit tedious for such a thing.

解决方案

If it's really giving you the actual go objects (i.e. a bunch of map[string]interface{} and not the json string itself) then there probably isn't much you can do besides a bunch of type assertions.

You could re-marshall it to json then parse it again into the correct structs, but that's a bit of a hack (and I have no idea if it would be performant or not).

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