How to Properly Handle Unicode Strings in Go JSON Responses?

How to Parse and Unquote Unicode Strings in Go Responses

When receiving JSON responses from an API, you may encounter raw ASCII content instead of readable text. This is because certain Unicode characters are encoded using escape sequences to ensure compatibility with older systems. To parse and display these characters correctly, you can use the following techniques:

Using the json Package

The json package provides a convenient method to unquote and parse Unicode strings. The following example demonstrates how to use it:

var i interface{}
err := json.Unmarshal([]byte(src), &i)
if err != nil {
    fmt.Println(err)
}

fmt.Println(i)

After unmarshalling the JSON response into an interface{}, you can access the unquoted Unicode values easily.

Using strconv.Unquote()

If you only need to unquote a specific Unicode string, you can use the strconv.Unquote() function. This function expects a quoted string as input and returns the unquoted version. For example:

fmt.Println(strconv.Unquote(`"\u7d20\u672a\u8c0b"`))

Benefits of Unquoting Unicode

• Improved Readability: Displayable characters are rendered, making the text readable.
• Proper Display: Unicode characters are represented accurately, supporting internationalization.
• Reduced File Size: Unquoted strings are smaller than their escaped counterparts, reducing bandwidth requirements.

Note:

strconv.Unquote() expects a string enclosed in quotes. Raw string literals (``) can be used to ensure that the compiler does not interpret the escape sequences.

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