When converting Chinese character data to JSON format, under what circumstances do you need to convert Chinese characters to Unicode encoding?

Best practices for Chinese character encoding in JSON data

Whether it is necessary to convert Chinese characters to Unicode encoding when converting data containing Chinese characters to JSON format is a common problem. For example:

 {"subject":"\u6395\u7268\u51ef\u86c1"} // Unicode encoding {"subject":"Did you eat"} // Use Chinese characters directly

The former uses Unicode escape sequences, while the latter uses Chinese characters directly. So, when exactly does Unicode conversion need to be performed?

In fact, in most modern application scenarios, there is no need to convert Chinese characters to Unicode encoding.

Many programming languages ​​automatically process Unicode characters during JSON serialization, converting them into escape sequences to ensure that JSON data is correctly parsed in any system that supports UTF-8. This is because all character encodings are ASCII compatible, while Unicode escape sequences are represented by ASCII characters.

Manual Unicode conversion may only be required to avoid garbled code in rare cases, such as when JSON data needs to be transferred between incompatible character encodings . However, this situation is extremely rare in today's UTF-8-dominated development environments.

The recommended approach is to always use UTF-8 encoding . UTF-8 has strong encoding compatibility, can avoid encoding conversion problems, and is more efficient in data transmission. In UTF-8 environment, it is best practice to use Chinese characters directly without Unicode conversion. This not only simplifies the code, but also improves the readability and maintenance of the code.

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