【问题标题】:Loop through JSON keys and values and same time replacing specify matched value in golang循环遍历 JSON 键和值,同时替换 golang 中的指定匹配值
【发布时间】:2019-02-27 04:54:48
【问题描述】:

有什么方法可以循环遍历json的键和值,从而通过匹配的路径或匹配的比较键或值来确认和替换特定值,并在用键确认后同时创建一个新的json接口Golang 中的新价值。

这是一个我看到循环遍历所有值 https://play.golang.org/p/xtiT2iGocBg 的示例,但我不知道用匹配的路径或值替换值

【问题讨论】:

  • 发布您的尝试总是很有帮助的。
  • 是的,但这就是我正在尝试的,因为没有成功

标签: json loops go interface


【解决方案1】:

我终于成功地获得了键/值,并且现在可以同时替换任何值或键,但我现在正在努力的最后一步是如何分别获得所有值的 aMap[key]anArray[i] 路径。例如,"test2": "TEST EACH REPLACE " 的路径为 outterJSON.innerJSON1.nnerInnerArray.1.test2,但可以是任何格式。

https://play.golang.org/p/TNkonE8AkoJ

package main

import (
    "encoding/json"
    "fmt"   
)
 var co=""
func main() {
    //Creating the maps for JSON
    m := map[string]interface{}{}

    //Parsing/Unmarshalling JSON encoding/json
    err := json.Unmarshal([]byte(input), &m)

    if err != nil {
        panic(err)
    }
    parseMap(m)

    fmt.Println(co)

    data, _ := json.MarshalIndent(m,"", "  ")
    fmt.Println(string(data))
}

func parseMap(aMap map[string]interface{}) {
    for key, val := range aMap {
        switch concreteVal := val.(type) {
        case map[string]interface{}:

        co += key+"."
            fmt.Println(key+"NwHN")
            parseMap(val.(map[string]interface{}))

        case []interface{}:
        co += key+"."
            fmt.Println(key+"NHN")
            parseArray(val.([]interface{}))

        default:

        fmt.Println("OOOOO")
        aMap[key]="TEST EACH REPLACE "
            fmt.Println(key, "v:", concreteVal)

        }
    }
}

func parseArray(anArray []interface{}) {
    for i, val := range anArray {
        switch concreteVal := val.(type) {
        case map[string]interface{}:

            fmt.Println("Indexr:", i)
            parseMap(val.(map[string]interface{}))

        case []interface{}:

            fmt.Println("Indexb:", i)
            parseArray(val.([]interface{}))


        default:
        anArray[i]= "TEST EACH REPLACE ARR"
            fmt.Println("Index", i, ":", concreteVal)

        }
    }
}

const input = `
{
"ouj":"ou",
    "outterJSON":{
        "innerJSON1":{
            "value1":10,
            "value2":22
            ,
            "InnerInnerArray": [ "test1" , {"test2":"valtest2"}],
            "InnerInnerJSONArray": [ {"fld1" : "val1"} , {"fld2" : "val2"} ]
            },
            "InnerJSON2":"NoneValue"
        }
    }
    `

【讨论】:

    【解决方案2】:

    终于!我完成了我正在寻找的完整规格!!

    https://play.golang.org/p/eN4-FjaQS97

       package main
    
    import (
        "encoding/json"
        "fmt"
    )
    
    func main() {
        b := []byte(`
            {
            "iw":{"Ie":{"Itye":{"e":"eIe"}}},
    "InnerJSON2":"NoneValue",
        "outterJSON":{
            "innerJSON1":{
                "value1":10,
                "value2":22
                ,
                "InnerInnerArray": [ "test1" , "test2"],
                "InnerInnerJSONArray": [ {"fld1" : "val1"} , {"fld2" : "val2"} ]
                },
                "InnerJSON2":"NoneValue"
            }
        }
        `)
    
        f := map[string]interface{}{}
        if err := json.Unmarshal(b, &f); err != nil {
            panic(err)
        }
    
        verifyJSON(f)
        data, _ := json.MarshalIndent(f, "", "  ")
        fmt.Println(string(data))
    }
    
    func verifyJSON(bv interface{}) {
    
        var dumpJSON func(v interface{}, kn string)
    
        dumpJSON = func(v interface{}, kn string) {
            iterMap := func(x map[string]interface{}, root string) {
    
                var knf string
                if root == "root" {
                    knf = "%v/%v"
                } else {
                    knf = "%v/%v"
                }
                for k, v := range x {
    
                    switch vv := v.(type) {
    
                    case map[string]interface{}:
    
                        fmt.Printf("%s => (map[string]interface{}) ...\n", fmt.Sprintf(knf, root, k))
    
                    case []interface{}:
                        fmt.Printf("%s => ([]interface{}) ...\n", fmt.Sprintf(knf, root, k))
                    default:
                        fmt.Printf("%s => %v\n", fmt.Sprintf(knf, root, k), vv)
                        x[k] = "rgk"
                    }
                    dumpJSON(v, fmt.Sprintf(knf, root, k))
                }
            }
    
            iterSlice := func(x []interface{}, root string) {
                var knf string
                if root == "root" {
                    knf = "%v/%v"
    
                } else {
                    knf = "%v/%v"
                }
                for k, v := range x {
    
                    switch vv := v.(type) {
    
                    case map[string]interface{}:
    
                        fmt.Printf("%s => (map[string]interface{}) ...\n", fmt.Sprintf(knf, root, k))
    
                    case []interface{}:
                        fmt.Printf("%s => ([]interface{}) ...\n", fmt.Sprintf(knf, root, k))
                    default:
    
                        fmt.Printf("%s => %v\n", fmt.Sprintf(knf, root, k), vv)
    
                        x[k] = "rg"
                    }
    
                    dumpJSON(v, fmt.Sprintf(knf, root, k))
                }
            }
    
            switch vv := v.(type) {
            case map[string]interface{}:
                iterMap(vv, kn)
            case []interface{}:
                iterSlice(vv, kn)
            default:
    
            }
        }
        dumpJSON(bv, "root")
    }
    

    【讨论】:

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