golang json to yaml

With the development of the Internet and artificial intelligence technology, mutual conversion of data formats has become more and more common. In this case, golang, as a powerful programming language, is outstanding in handling data format conversion. This article will introduce how to use golang to convert json format to yaml format.

1. Install the necessary golang libraries

Before using golang to convert json to yaml, you need to install two necessary libraries, namely "gopkg.in/yaml. v3" and "encoding/json" libraries. You can enter the following command in the terminal to install:

go get gopkg.in/yaml.v3
go get encoding/json

2. Define json data

Before converting json to yaml, you need to define the json data first. The following is a simple json data example:

{
   "name": "张三",
   "age": 30,
   "gender": "男",
   "email": "zhangsan@example.com"
}

3. Convert json data to yaml format

In golang, using the above two libraries can easily convert json Data is converted to yaml format. The following is a simple example program:

package main

import (
    "fmt"
    "encoding/json"
    "gopkg.in/yaml.v3"
)

type Person struct {
    Name   string `json:"name" yaml:"name"`
    Age    int    `json:"age" yaml:"age"`
    Gender string `json:"gender" yaml:"gender"`
    Email  string `json:"email" yaml:"email"`
}

func main() {
    jsonStr := `{"name": "张三", "age": 30, "gender": "男", "email": "zhangsan@example.com"}`
    var person Person
    json.Unmarshal([]byte(jsonStr), &person)

    yamlBytes, _ := yaml.Marshal(person)
    yamlStr := string(yamlBytes)
    fmt.Println(yamlStr)
}

The above program first defines a structure named "Person", which contains all attributes in the json data. Then, use the "json.Unmarshal" function to convert the json data into structure format. Next, use the "yaml.Marshal" function to convert the structure into yaml format and print the output result.

4. Result Analysis

After running the above program, the output result is as follows:

name: 张三
age: 30
gender: 男
email: zhangsan@example.com

It can be seen that the attributes in the structure have been successfully converted to yaml format.

5. Summary

This article introduces how to use the two libraries "gopkg.in/yaml.v3" and "encoding/json" in golang to convert json format to yaml format. This process is very simple and efficient and can provide great help for data format conversion. Through the introduction of this article, I believe that readers have sufficient understanding of JSON to YAML conversion in Golang. Readers are welcome to experience it in practice.

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