Home Backend Development Golang Let's talk about the method of character escaping in golang

Let's talk about the method of character escaping in golang

Apr 05, 2023 pm 01:47 PM

在 Golang 中,当我们需要使用 Unicode 字符或者特殊字符时,需要使用转义字符对其进行转义。本文将介绍 Golang 中的字符转义方法,以及一些实际应用案例。

一、Golang 字符转义

在 Golang 中,需要转义的字符包括了常见的特殊字符,诸如反斜杠(\)、双引号(")、单引号(')、制表符(\t)和换行符(\n),还包括 Unicode 码点。下面是一些常用的字符转义方式:

转义字符 类型 含义
\ 转义符 反斜杠
\' 转义符 单引号
\" 转义符 双引号
\r 转义符 回车
\n 转义符 换行
\t 转义符 制表符
\x 转义符 十六进制编码
\u 转义符 Unicode 编码

举个例子,如果我们需要将一个字符串代表的文件路径赋给变量 path,其中包含了一个反斜杠,则需要使用双反斜杠进行转义:

path := "C:\\Program Files\\Golang\\"
Copy after login

如果需要使用双引号包含一个名字为 foo 的字符串,则需要使用反斜杠进行转义:

name := "\"foo\""
Copy after login

如果需要在字符串中插入换行符,则可以使用 \n 进行转义:

text := "这是第一行\n这是第二行"
Copy after login

二、Golang 中的 Unicode 字符转义

Unicode 是一种字符编码标准,目前已经成为了国际标准。在 Golang 中,我们可以使用 \u 和 \U 转义序列来代表一个 Unicode 字符。

对于 \u 转义序列,它后面紧跟着一个四位数的十六进制数字,代表了一个 Unicode 字符。例如,下面的代码将在输出中打印一个希腊字母 Omega:

fmt.Print("\u03A9")
Copy after login

而 \U 转义序列则需要后面跟着一个八位的十六进制数,例如:

fmt.Print("\U0001F608")
Copy after login

这会在输出中打印一个笑脸的 Emoji 图案。

三、Golang 中的常用转义应用场景

1、JSON 转义

在 Golang 中,如果需要将一个结构体转换成 JSON 格式,需要对结构体中的特殊字符进行转义,防止 JSON 中出现语法错误。例如,下面的代码就需要将一个结构体转换成 JSON 格式:

type Example struct {
    Name string `json:"name"`
    Desc string `json:"desc"`
}

e := Example{
    Name: "Golang",
    Desc: "Go语言是一门快速的,静态类型的编程语言",
}

js, _ := json.Marshal(e)

fmt.Println(string(js))
Copy after login

输出结果:

{"name":"Golang","desc":"Go语言是一门快速的,静态类型的编程语言"}
Copy after login

注意,在上面的代码中,json:"name"json:"desc"用于定义 JSON 的 key 值。这是 Golang 内置的 JSON 解析库中的一个重要功能。而在 JSON 转义中,如果需要将转义字符转换成特殊字符,常常需要使用类似\u0027的转义方式。

2、HTML 转义

在 Golang 中使用 html/template 库来进行 HTML 转义,以避免在网页中造成安全隐患。例如,下面的代码演示了如何将一个字符串转换为 HTML 格式:

import (
    "html/template"
    "os"
)

tmpl, _ := template.New("test").Parse(`{{define "T"}}Hello, {{.}}!{{end}}`)
tmpl.ExecuteTemplate(os.Stdout, "T", "<b>你好,世界!</b>")
Copy after login

输出结果:

Hello, &lt;b&gt;你好,世界!&lt;/b&gt;!
Copy after login

在上面的代码中,tmpl.ExecuteTemplate 方法用于执行模板,并将输出写到 os.Stdout,也就是终端屏幕。

三、总结

在 Golang 中进行字符和 Unicode 字符的转义,是开发过程中很常见的操作。本文介绍了常见的字符转义方式,以及在 JSON 和 HTML 转义中的应用场景。希望对您的 Golang 学习和开发有所帮助。

The above is the detailed content of Let's talk about the method of character escaping in golang. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

What are the vulnerabilities of Debian OpenSSL What are the vulnerabilities of Debian OpenSSL Apr 02, 2025 am 07:30 AM

OpenSSL, as an open source library widely used in secure communications, provides encryption algorithms, keys and certificate management functions. However, there are some known security vulnerabilities in its historical version, some of which are extremely harmful. This article will focus on common vulnerabilities and response measures for OpenSSL in Debian systems. DebianOpenSSL known vulnerabilities: OpenSSL has experienced several serious vulnerabilities, such as: Heart Bleeding Vulnerability (CVE-2014-0160): This vulnerability affects OpenSSL 1.0.1 to 1.0.1f and 1.0.2 to 1.0.2 beta versions. An attacker can use this vulnerability to unauthorized read sensitive information on the server, including encryption keys, etc.

What libraries are used for floating point number operations in Go? What libraries are used for floating point number operations in Go? Apr 02, 2025 pm 02:06 PM

The library used for floating-point number operation in Go language introduces how to ensure the accuracy is...

What is the problem with Queue thread in Go's crawler Colly? What is the problem with Queue thread in Go's crawler Colly? Apr 02, 2025 pm 02:09 PM

Queue threading problem in Go crawler Colly explores the problem of using the Colly crawler library in Go language, developers often encounter problems with threads and request queues. �...

Transforming from front-end to back-end development, is it more promising to learn Java or Golang? Transforming from front-end to back-end development, is it more promising to learn Java or Golang? Apr 02, 2025 am 09:12 AM

Backend learning path: The exploration journey from front-end to back-end As a back-end beginner who transforms from front-end development, you already have the foundation of nodejs,...

In Go, why does printing strings with Println and string() functions have different effects? In Go, why does printing strings with Println and string() functions have different effects? Apr 02, 2025 pm 02:03 PM

The difference between string printing in Go language: The difference in the effect of using Println and string() functions is in Go...

How to specify the database associated with the model in Beego ORM? How to specify the database associated with the model in Beego ORM? Apr 02, 2025 pm 03:54 PM

Under the BeegoORM framework, how to specify the database associated with the model? Many Beego projects require multiple databases to be operated simultaneously. When using Beego...

PostgreSQL monitoring method under Debian PostgreSQL monitoring method under Debian Apr 02, 2025 am 07:27 AM

This article introduces a variety of methods and tools to monitor PostgreSQL databases under the Debian system, helping you to fully grasp database performance monitoring. 1. Use PostgreSQL to build-in monitoring view PostgreSQL itself provides multiple views for monitoring database activities: pg_stat_activity: displays database activities in real time, including connections, queries, transactions and other information. pg_stat_replication: Monitors replication status, especially suitable for stream replication clusters. pg_stat_database: Provides database statistics, such as database size, transaction commit/rollback times and other key indicators. 2. Use log analysis tool pgBadg

How to solve the user_id type conversion problem when using Redis Stream to implement message queues in Go language? How to solve the user_id type conversion problem when using Redis Stream to implement message queues in Go language? Apr 02, 2025 pm 04:54 PM

The problem of using RedisStream to implement message queues in Go language is using Go language and Redis...

See all articles