如何展平嵌套JSON [英] How to flatten nested JSON

问题描述

尝试将嵌套的json响应从2个级别展平到1个级别.

这是我在Go Playground上的工作代码: http://play.golang.org/p/kHAYuZUTko

我想结束:

  type社会结构{GooglePlusPlusOnes uint32`Social:"GooglePlusOne"`TwitterTweets uint32`json:"Twitter"`LinkedinShares uint32`json:"LinkedIn"`PinterestPins uint32`json:"Pinterest"`uint32`json:"StumbleUpon"`DeliciousBookmarks uint32`json:"Delicious"`Facebook喜欢uint32`json:"?? some_magical_nested_address ??"FacebookShares uint32`json:"?? some_magical_nested_address ??"FacebookComments uint32`json:"?? some_magical_nested_address ??"Facebooktotal uint32`json:"?? some_magical_nested_address ??"} 

...而不是包含嵌套的 Facebook 类型的 Social 类型(在下面的代码中可见).

我怀疑我需要做一个自定义的 UnmarshalJSON 函数，但是我不知道它们是如何工作的，而且我是Go的新手.

建议?

---

这是上面转到操场链接中的代码:

 程序包主要进口 (编码/json""fmt")输入社交结构{GooglePlusPlusOnes uint32`json:"GooglePlusOne"`TwitterTweets uint32`json:"Twitter"`LinkedinShares uint32`json:"LinkedIn"`PinterestPins uint32`json:"Pinterest"`uint32`json:"StumbleUpon"`DeliciousBookmarks uint32`json:"Delicious"`Facebook的}输入Facebook struct {Facebook喜欢uint32`json:"like_count"`FacebookShares uint32`json:"share_count"`FacebookComments uint32`json:"comment_count"`FacebookTotal uint32`json:"total_count"`}func main(){var jsonBlob = [] byte(`[{"StumbleUpon":0，"Reddit":0，"Facebook":{"commentsbox_count":4691，"click_count":0:"total_count":298686，"comment_count":38955，"like_count":82902，"share_count:176829}，" Delicious:0，" GooglePlusOne:275234，" Buzz:0，" Twitter:7346788，" Diggs:0，" Pinterest:40982，" LinkedIn:0}]`)var social []社交err:= json.Unmarshal(jsonBlob，& social)如果err！= nil {fmt.Println(错误:"，错误)}fmt.Printf(％+ v"，社交)} 

解决方案

您可以简单地嵌入 Facebook结构:

  type社会结构{.....Facebook`json:"Facebook"`} 

然后按以下方式访问它:

  social.FacebookLikes 

工作示例: http://play.golang.org/p/xThhX_92Sg

Trying to flatten a nested json response from 2 levels deep down to 1.

Here is my working code on Go Playground: http://play.golang.org/p/kHAYuZUTko

I want to end up with:

type Social struct {
    GooglePlusPlusOnes  uint32 `Social:"GooglePlusOne"`
    TwitterTweets       uint32 `json:"Twitter"`
    LinkedinShares      uint32 `json:"LinkedIn"`
    PinterestPins       uint32 `json:"Pinterest"`
    StumbleuponStumbles uint32 `json:"StumbleUpon"`
    DeliciousBookmarks  uint32 `json:"Delicious"`
    FacebookLikes       uint32 `json:"??some_magical_nested_address??"`
    FacebookShares      uint32 `json:"??some_magical_nested_address??"`
    FacebookComments    uint32 `json:"??some_magical_nested_address??"`
    FacebookTotal       uint32 `json:"??some_magical_nested_address??"`
}

...instead of a Social type containing a nested Facebook type (seen in the code below).

I suspect I'll need to do a custom UnmarshalJSON function, but I don't know how those work and I'm new to Go.

Suggestions?

---

Here is the code from the Go Playground link above:

package main

import (
    "encoding/json"
    "fmt"
)

type Social struct {
    GooglePlusPlusOnes  uint32 `json:"GooglePlusOne"`
    TwitterTweets       uint32 `json:"Twitter"`
    LinkedinShares      uint32 `json:"LinkedIn"`
    PinterestPins       uint32 `json:"Pinterest"`
    StumbleuponStumbles uint32 `json:"StumbleUpon"`
    DeliciousBookmarks  uint32 `json:"Delicious"`
    Facebook            Facebook
}

type Facebook struct {
    FacebookLikes    uint32 `json:"like_count"`
    FacebookShares   uint32 `json:"share_count"`
    FacebookComments uint32 `json:"comment_count"`
    FacebookTotal    uint32 `json:"total_count"`
}

func main() {
    var jsonBlob = []byte(`[
        {"StumbleUpon":0,"Reddit":0,"Facebook":{"commentsbox_count":4691,"click_count":0,"total_count":298686,"comment_count":38955,"like_count":82902,"share_count":176829},"Delicious":0,"GooglePlusOne":275234,"Buzz":0,"Twitter":7346788,"Diggs":0,"Pinterest":40982,"LinkedIn":0}
    ]`)

    var social []Social
    err := json.Unmarshal(jsonBlob, &social)
    if err != nil {
        fmt.Println("error:", err)
    }
    fmt.Printf("%+v", social)
}

解决方案

You can simply embed the Facebook struct:

type Social struct {
    .....
    Facebook            `json:"Facebook"`
}

Then access it like:

social.FacebookLikes

Working example: http://play.golang.org/p/xThhX_92Sg

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