dongxun2903
2019-06-19 11:50
浏览 1.3k
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如何将JSON数组转换为对象

I have following json

{"data":{"0":{"0":"1","1":"Test1","2":"Test2","DT_RowId":"row_1"}}}

I want to remove the outer level index

I want as below

{"data":[{"0":"1","1":"Test1","2":"Test2","DT_RowId":"row_1"}]}

This should be done in Go.

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1条回答 默认 最新

  • doupo2241 2019-06-19 12:20
    已采纳

    You have to do something like this:

    package main
    
    import (
        "encoding/json"
        "fmt"
    )
    
    func main() {
        data1 := make(map[string]map[string]interface{})
        s1 := `{"data":{"0":{"0":"1","1":"Test1","2":"Test2","DT_RowId":"row_1"}}}`
        err := json.Unmarshal([]byte(s1), &data1)
        if err != nil {
            // check error
        }
    
        data2 := make(map[string][]interface{})
        data2["data"] = []interface{}{data1["data"]["0"]}
        s2, err := json.Marshal(data2)
        if err != nil {
            // check error
        }
    
        fmt.Printf("%s
    ", s2)
        // result will be:
        // {"data":[{"0":"1","1":"Test1","2":"Test2","DT_RowId":"row_1"}]}
    }
    

    You can check it in playground.
    And don't forget to check data before using it, like:

    // instead of:
    data2["data"] = []interface{}{data1["data"]["0"]}
    
    // you must have something like:
    val1, ok := data1["data"]
    if !ok { ... }
    // and
    val2, ok := val1["0"]
    if !ok { ... }
    
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