使用Go删除JSON字符串的第一个字段

import (
    "encoding/json"
    "fmt"
)

func main() {
    jsonStr := `{"field1": "value1", "field2": "value2", "field3": "value3"}`
    
    var data map[string]interface{}
    err := json.Unmarshal([]byte(jsonStr), &data)
    if err != nil {
        fmt.Println("JSON解析失败：", err)
        return
    }
    
    fmt.Println("解析后的JSON数据：", data)
}

var firstField string
for key := range data {
    firstField = key
    break
}

delete(data, firstField)

modifiedJSON, err := json.Marshal(data)
if err != nil {
    fmt.Println("JSON转换失败：", err)
    return
}

fmt.Println("修改后的JSON字符串：", string(modifiedJSON))

package main

import (
    "encoding/json"
    "fmt"
)

func main() {
    jsonStr := `{"field1": "value1", "field2": "value2", "field3": "value3"}`

    var data map[string]interface{}
    err := json.Unmarshal([]byte(jsonStr), &data)
    if err != nil {
        fmt.Println("JSON解析失败：", err)
        return
    }

    fmt.Println("解析后的JSON数据：", data)

    var firstField string
    for key := range data {
        firstField = key
        break
    }

    delete(data, firstField)

    modifiedJSON, err := json.Marshal(data)
    if err != nil {
        fmt.Println("JSON转换失败：", err)
        return
    }

    fmt.Println("修改后的JSON字符串：", string(modifiedJSON))
}