dongyang2229
2016-03-20 20:40
浏览 279

从golang中的json文件中读取切片

How do I read a slice from a json file in golang? For example, the file data.json looks like this:

["a","b","c","d"]

I have tried using ioutil.ReadFile to do this, but this returns a string, not a slice. How can I read my slice?
NOTE: You can sub the brackets [] for braces {}
I have done this using structs, but I don't want the user to have to type in this complicated json stuff

图片转代码服务由CSDN问答提供 功能建议

如何从golang中的 json 文件中读取切片? 例如,文件 data.json 看起来像这样:

[“ a”,“ b”,“ c”,“ d”]

我尝试使用 ioutil.ReadFile 来执行此操作,但这会返回字符串,而不是切片。 如何阅读我的切片?
注意:您可以将括号 [] 放在花括号 {}
\ n我已经使用结构完成了此操作,但我不希望用户键入此复杂的json内容

  • 点赞
  • 写回答
  • 关注问题
  • 收藏
  • 邀请回答

1条回答 默认 最新

  • douxiang3978 2016-03-20 22:12
    已采纳

    For example,

    package main
    
    import (
        "encoding/json"
        "fmt"
        "io/ioutil"
    )
    
    func main() {
        data, err := ioutil.ReadFile("data.json")
        if err != nil {
            fmt.Println(err)
            return
        }
        fmt.Print("data:  ",string(data))
        var slice []string
        err = json.Unmarshal(data, &slice)
        if err != nil {
            fmt.Println(err)
            return
        }
        fmt.Printf("slice: %q
    ",slice)
    }
    

    Output:

    $ cat data.json
    ["a","b","c","d"]
    $ go run data.go
    data:  ["a","b","c","d"]
    slice: ["a" "b" "c" "d"]
    $
    
    点赞 打赏 评论

相关推荐 更多相似问题