golang json escape characters

In Go programming, JSON is a common data format used to transfer data between different applications. JSON contains some special characters that need to be escaped if you want to use them in a JSON string. This article will introduce how to use escape characters to process JSON data in Go.

The meaning of escape characters

In JSON strings, some special characters need to be escaped. These characters include quotation marks ("), backslash (), slash (/) , backspace ( ), line feed (
), carriage return ( ), Tab ( ), etc. These special characters have special meanings in JSON strings. If these characters are used directly, formatting may occur. Problems such as errors or data confusion. Therefore, when using these special characters in a JSON string, you need to use escape characters to escape them into specific character representations.

JSON escape characters in Go language

In Go language, when converting data to JSON format, you also need to use escape characters to handle special characters. Escape characters in Go language are basically the same as escape characters in other programming languages, such as ,
means line break, means Tab character. The following is a list of some commonly used JSON escape characters:

Escape characters	Description
\"	Double quotes (")
\	Reverse Slash()
/	Slash(/)
\b	Backspace character
\f	Form feed character
\n	Line feed character
\r	Carriage return character
\t	Tab character
\uXXXX	Hexadecimal Unicode character value

In Go language, you can use backslashes to escape special characters into JSON Escape characters. For example, use "
" to represent a newline character and """ to represent a double quote. Here is an example:

import (
    "encoding/json"
    "fmt"
)

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

func main() {
    user := User{Name: "Tom", Age: 20}
    jsonData, err := json.Marshal(user)
    if err != nil {
        fmt.Println(err)
        return
    }

    jsonString := string(jsonData)
    fmt.Println(jsonString)
}

In the above code, we create a User structure and use the json.Marshal() function to convert it into a JSON format string. During this process, the Go language will automatically convert the fields in the User structure into fields in JSON and escape special characters. The final output result is as follows:

{"name":"Tom","age":20}

In this result, we can see that special characters such as double quotes and slashes are escaped as escape characters in JSON.

Summary

JSON, as a common data exchange format, is also commonly used in the Go language. When processing JSON data, you need to pay attention to the escaping of special characters. By using escape characters, special characters can be converted to escape characters in JSON, thus avoiding issues such as formatting errors or data confusion. In the Go language, you can use the json.Marshal() function to easily convert data into a JSON-formatted string and automatically handle the escaping of special characters.

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