


Customizing Time.Time Layout for JSON Marshalling
In Golang's encoding/json package, the default layout for time.Time values is "2006-01-02T15:04:05Z". However, it is possible to override this layout to use a custom formatting string.
Solution:
To override the layout used by json.Marshal for time.Time fields, you can define a new type that embeds time.Time and implements the MarshalText interface. This interface defines a method that returns the byte representation of the value. The code below demonstrates how to achieve this:
<code class="go">package main import ( "encoding/json" "fmt" "time" ) type jsonTime struct { time.Time f string } func (j jsonTime) format() string { return j.Time.Format(j.f) } func (j jsonTime) MarshalText() ([]byte, error) { return []byte(j.format()), nil } func (j jsonTime) MarshalJSON() ([]byte, error) { return []byte(`"` + j.format() + `"`), nil } func main() { jt := jsonTime{time.Now(), time.Kitchen} x := map[string]interface{}{ "foo": jt, "bar": "baz", } data, err := json.Marshal(x) if err != nil { panic(err) } fmt.Printf("%s", data) }</code>
In this code, the jsonTime struct embeds a time.Time value and defines a custom format() method to return the time as a string using the specified layout. It also implements the MarshalText and MarshalJSON interfaces to return the custom string representation during JSON marshalling.
By using this approach, you can control the layout used for time.Time values in JSON output and customize it according to your specific requirements.
The above is the detailed content of How can I customize the time.Time layout when marshalling to JSON in Golang?. For more information, please follow other related articles on the PHP Chinese website!

This article demonstrates creating mocks and stubs in Go for unit testing. It emphasizes using interfaces, provides examples of mock implementations, and discusses best practices like keeping mocks focused and using assertion libraries. The articl

This article explores Go's custom type constraints for generics. It details how interfaces define minimum type requirements for generic functions, improving type safety and code reusability. The article also discusses limitations and best practices

The article discusses writing unit tests in Go, covering best practices, mocking techniques, and tools for efficient test management.

This article explores using tracing tools to analyze Go application execution flow. It discusses manual and automatic instrumentation techniques, comparing tools like Jaeger, Zipkin, and OpenTelemetry, and highlighting effective data visualization

The article explains how to use the pprof tool for analyzing Go performance, including enabling profiling, collecting data, and identifying common bottlenecks like CPU and memory issues.Character count: 159

The article discusses Go's reflect package, used for runtime manipulation of code, beneficial for serialization, generic programming, and more. It warns of performance costs like slower execution and higher memory use, advising judicious use and best

The article discusses managing Go module dependencies via go.mod, covering specification, updates, and conflict resolution. It emphasizes best practices like semantic versioning and regular updates.

The article discusses using table-driven tests in Go, a method that uses a table of test cases to test functions with multiple inputs and outcomes. It highlights benefits like improved readability, reduced duplication, scalability, consistency, and a


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
