Go通过SJSON实现动态修改JSON

package main

import (
    "encoding/json"
    "fmt"
)

type Person struct {
    Name string `json:"name"`
    Age  int    `json:"age"`
}

func main() {
    jsonStr := `{"name":"张三","age":25}`

    var person Person
    err := json.Unmarshal([]byte(jsonStr), &person)
    if err != nil {
       fmt.Println("解析错误:", err)
       return
    }

    person.Age = 35
    newJson, _ := json.Marshal(person)

    fmt.Println(string(newJson))
}

go get -u github.com/tidwall/sjson

package main

import (
    "fmt"
    "github.com/tidwall/sjson"
)

func main() {
    jsonStr := `{"name":"张三","age":25}`

    // 修改 age 值为 35
    newJson, _ := sjson.Set(jsonStr, "age", 35)

    fmt.Println(string(newJson))
}

package main

import (
    "fmt"
    "github.com/tidwall/sjson"
)

func main() {
    jsonStr := `{
       "name": "张三",
       "age": 25,
       "hobby": {
          "sing": "只因你太美",
          "dance": "背带裤",
          "rap": "kun",
          "ball": "篮球"
       }`

    // 修改 hobby.sing 的值: 只因你太美 => 重生
    newJson, _ := sjson.Set(jsonStr, "hobby.sing", "重生")

    fmt.Println(string(newJson))
}

package main

import (
    "fmt"
    "github.com/tidwall/sjson"
)

func main() {
    jsonStr := `{"hobby": ["sing","dance","rap","ball"]}`

    // 修改 hobby 数组第4个元素为 play
    newJson, _ := sjson.Set(jsonStr, "hobby.3", "play")

    fmt.Println(string(newJson))

    // 追加 hobby 数组第5个元素为 play
    newJson, _ = sjson.Set(jsonStr, "tags.-1", "play")
    fmt.Println(string(newJson))
}

package main

import (
    "fmt"
    "github.com/tidwall/sjson"
)

func main() {
    jsonStr := `{"name":"张三","age":25}`

    // 删除age字段
    newJson, _ := sjson.Delete(jsonStr, "age")

    fmt.Println(string(newJson))
}