How do I handle errors when working with JSON in Go?

How do I handle errors when working with JSON in Go?

In Go, you can handle errors when working with JSON by checking the error returned by functions like json.Unmarshal. For example, if you try to unmarshal JSON into a struct, you should always check if an error occurred.

Can you show me a code example?

Sure! Here's a simple example:

package main

import (
    "encoding/json"
    "fmt"
)

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

func main() {
    data := []byte(`{"name":"John", "age":30}`)
    var p Person
    err := json.Unmarshal(data, &p)
    if err != nil {
        fmt.Println("Error unmarshaling JSON:", err)
        return
    }
    fmt.Println(p)
}

What if the JSON structure doesn't match my struct?

If the JSON structure doesn't match your struct, json.Unmarshal will still succeed, but the fields that don't match will be left with their zero values. You can check for this by validating the data after unmarshaling.