Go JSON Parsing: Methods Guide

In Go, there are several ways to parse JSON data:

1. encoding in JSON
2. json encoding
3. Decode or parse
4. Decode the data.

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

jsonStr := `{"name":"Alice","age":25}`
var person Person
err := json.Unmarshal([]byte(jsonStr), &person)
if err != nil {
    panic(err)
}
fmt.Printf("Name: %s, Age: %d\n", person.Name, person.Age)

1. Parse the JSON data.
2. parse the JSON data
3. a data structure that stores values by using strings as keys
4. Create a visual representation of geographical locations.
5. unspecified type
6. an array of bytes
7. parse the JSON data

jsonStr := `{"name":"Alice","age":25}`
var data map[string]interface{}
err := json.Unmarshal([]byte(jsonStr), &data)
if err != nil {
    panic(err)
}
fmt.Printf("Name: %s, Age: %f\n", data["name"].(string), data["age"].(float64))

1. parsing JSON data
2. Decode a JSON object
3. Translate into plain text
4. a decoder for JSON data

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

jsonStr := `{"name":"Alice","age":25}`
var person Person

dec := json.NewDecoder(strings.NewReader(jsonStr))
for {
    if err := dec.Decode(&person); err == io.EOF {
        break
    } else if err != nil {
        panic(err)
    }
    fmt.Printf("Name: %s, Age: %d\n", person.Name, person.Age)
}

Regardless of the method used, it is necessary to handle errors when parsing JSON data to ensure the process is done correctly.