How to validate JSON with regular expression in Golang?
如何在 Go 中使用正则表达式验证 JSON?定义正则表达式模式,确保字符串以花括号开头,包含键值对,键用引号括起,值可以是字符串、数组或嵌套对象。使用正则表达式包编译正则表达式。检查 JSON 字符串是否匹配正则表达式模式。
如何在 Golang 中用正则表达式验证 JSON
正则表达式 (Regex) 是一种强大的工具,可用于验证数据的模式和结构。在 Golang 中,我们可以使用正则表达式来验证 JSON 字符串是否符合预期的格式。
正则表达式模式:
^\{(?:"[^"]+":(?:(?!\{|\[)[^\[\]\{\}\"]+|\[.+\]|\{.+\}))*\}$
分解正则表达式:
^
: 起始锚定符号,确保字符串从开头开始匹配模式。\{
: 匹配花括号打开符号 ({
))。(?:"[^"]+":(?:(?!\{|\[)[^\[\]\{\}\"]+|\[.+\]|\{.+\}))*
: 匹配键值对,其中:(?:"[^"]+":)
: 匹配冒号前面的带引号的键。(?:(?!\{|\[)[^\[\]\{\}\"]+|\[.+\]|\{.+\})
: 匹配键值对的值,可以是字符串、数组或嵌套对象。
*
: 匹配前面的元素零次或多次。\}$
:匹配花括号关闭符号 (}
).
实战案例:
考虑以下 JSON 字符串:
{ "name": "John Doe", "age": 30, "hobbies": ["reading", "playing video games"] }
要使用正则表达式验证此字符串,我们可以使用以下代码:
package main import ( "fmt" "regexp" ) func main() { // 定义正则表达式字符串 jsonRegex := "^\\{(?:\"[^\"]+\":(?:(?!\\{|\\[)[^\\[\\]\\{\\}\\\"]+|\\\\\\[.+\\]|\\\\\\[.+\\]))*}\\}$" // 编译正则表达式 regex := regexp.MustCompile(jsonRegex) // JSON 字符串 jsonString := `{ "name": "John Doe", "age": 30, "hobbies": ["reading", "playing video games"] }` // 检查字符串是否符合模式 matched := regex.MatchString(jsonString) if matched { fmt.Println("The JSON string is valid.") } else { fmt.Println("The JSON string is invalid.") } }
运行此程序将输出:
The JSON string is valid.
这表明 JSON 字符串与预期的正则表达式模式匹配,因此是有效的 JSON。
The above is the detailed content of How to validate JSON with regular expression in Golang?. For more information, please follow other related articles on the PHP Chinese website!

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

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

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics











PHP regular expression verification: Number format detection When writing PHP programs, it is often necessary to verify the data entered by the user. One of the common verifications is to check whether the data conforms to the specified number format. In PHP, you can use regular expressions to achieve this kind of validation. This article will introduce how to use PHP regular expressions to verify number formats and provide specific code examples. First, let’s look at common number format validation requirements: Integers: only contain numbers 0-9, can start with a plus or minus sign, and do not contain decimal points. floating point

In Go, you can use regular expressions to match timestamps: compile a regular expression string, such as the one used to match ISO8601 timestamps: ^\d{4}-\d{2}-\d{2}T \d{2}:\d{2}:\d{2}(\.\d+)?(Z|[+-][0-9]{2}:[0-9]{2})$ . Use the regexp.MatchString function to check if a string matches a regular expression.

As a modern programming language, Go language provides powerful regular expressions and string processing functions, allowing developers to process string data more efficiently. It is very important for developers to master regular expressions and string processing in Go language. This article will introduce in detail the basic concepts and usage of regular expressions in Go language, and how to use Go language to process strings. 1. Regular expressions Regular expressions are a tool used to describe string patterns. They can easily implement operations such as string matching, search, and replacement.

To validate email addresses in Golang using regular expressions, follow these steps: Use regexp.MustCompile to create a regular expression pattern that matches valid email address formats. Use the MatchString function to check whether a string matches a pattern. This pattern covers most valid email address formats, including: Local usernames can contain letters, numbers, and special characters: !.#$%&'*+/=?^_{|}~-`Domain names must contain at least One letter, followed by letters, numbers, or hyphens. The top-level domain (TLD) cannot be longer than 63 characters.

The method of using regular expressions to verify passwords in Go is as follows: Define a regular expression pattern that meets the minimum password requirements: at least 8 characters, including lowercase letters, uppercase letters, numbers, and special characters. Compile regular expression patterns using the MustCompile function from the regexp package. Use the MatchString method to test whether the input string matches a regular expression pattern.

PHP is a widely used programming language, especially popular in the field of web development. In the process of web development, we often encounter the need to filter and verify text input by users, among which character filtering is a very important operation. This article will introduce how to use regular expressions in PHP to implement Chinese character filtering, and give specific code examples. First of all, we need to clarify that the Unicode range of Chinese characters is from u4e00 to u9fa5, that is, all Chinese characters are in this range.

PHP Regular Expressions: Exact Matching and Exclusion Fuzzy inclusion regular expressions are a powerful text matching tool that can help programmers perform efficient search, replacement and filtering when processing text. In PHP, regular expressions are also widely used in string processing and data matching. This article will focus on how to perform exact matching and exclude fuzzy inclusion operations in PHP, and will illustrate it with specific code examples. Exact match Exact match means matching only strings that meet the exact condition, not any variations or extra words.

This article will explain in detail how PHP returns the string from the start position to the end position of a string in another string. The editor thinks it is quite practical, so I share it with you as a reference. I hope you will finish reading this article. You can gain something from this article. Use the substr() function in PHP to extract substrings from a string. The substr() function can extract characters within a specified range from a string. The syntax is as follows: substr(string,start,length) where: string: the original string from which the substring is to be extracted. start: The index of the starting position of the substring (starting from 0). length (optional): The length of the substring. If not specified, then
