dream8877 2016-02-21 05:39
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将JSON对象数组转换为YAML

I have the following json which needs to convert to YAML

{
  "siteidparam": "lid",
  "sites": [
    {
      "name": "default",
      "routingmethod": {
        "method": "urlparam",
        "siteid": "default",
        "urlpath": "default"
      }
    },
    {
      "name": "csqcentral",
      "routingmethod": {
        "method": "urlparam",
        "siteid": "capitolsquare",
        "urlpath": "csq"
      }
    }
  ]
}

I used online JSON to YAML converter and it gave the following output,

---
  siteidparam: "lid"
  sites: 
    - 
      name: "default"
      routingmethod: 
        method: "urlparam"
        siteid: "default"
        urlpath: "default"
    - 
      name: "csqcentral"
      routingmethod: 
        method: "urlparam"
        siteid: "capitolsquare"
        urlpath: "csq"

when I tried to convert the same generated YAML back to json from the online service, it gives "Unable to parse" exception.

1.) what is the correct way of representing above kind of jsons in YAML?

I want to read this kind of YAML inside my golang program. For that I'm using spf13/viper library, but I couldn't find any method which is able to decode this king of array objects.

2.) How to read this kind of YAML in golang using viper? Sample code would help.

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2条回答 默认 最新

  • dongleiqiao2107 2016-02-21 10:50
    关注

    Code is ugly but looks like this library does not like nested arrays of objects.

    package main
    
    import (
        "bytes"
        "fmt"
        "github.com/spf13/viper"
    )
    
    func main() {
        viper.SetConfigType("yaml")
        var yamlExample = []byte(`---
      siteidparam: "lid"
      sites:
        -
          name: "default"
          routingmethod:
            method: "urlparam"
            siteid: "default"
            urlpath: "default"
        -
          name: "csqcentral"
          routingmethod:
            method: "urlparam"
            siteid: "capitolsquare"
            urlpath: "csq"`)
    
        viper.ReadConfig(bytes.NewReader(yamlExample))
    
        fmt.Printf("%s
    ", viper.GetString("siteidparam"))
    
        sites := viper.Get("sites").([]interface{})
        for i, _ := range sites {
            site := sites[i].(map[interface{}]interface{})
            fmt.Printf("%s
    ", site["name"])
            routingmethod := site["routingmethod"].(map[interface{}]interface{})
            fmt.Printf("  %s
    ", routingmethod["method"])
            fmt.Printf("  %s
    ", routingmethod["siteid"])
            fmt.Printf("  %s
    ", routingmethod["urlpath"])
        }
    }
    
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