When is Unicode conversion required when converting Chinese character data to JSON format?

Chinese character JSON encoding: Analysis of the necessity of Unicode conversion

Whether Unicode conversion is required when converting data containing Chinese characters to JSON format is a common question. This article will explore this issue in depth.

Consider the following two JSON objects:

 {"subject":"\u6395\u7268\u51ef\u86c1"}

 {"subject":"Did you eat"}

The first object uses Unicode escape sequence to represent Chinese characters, while the second object uses original Chinese characters directly.

In fact, in most cases, there is no need to convert Chinese characters to Unicode escape sequences to be stored in JSON. JSON serializers in most programming languages ​​automatically process Unicode characters, converting them to UTF-8 encoding. UTF-8 is an encoding that represents all Unicode characters and is compatible with most modern systems.

Unicode escape is mainly used to ensure consistency of JSON data when transmitted between different encoding systems. However, in modern development environments, almost all projects use UTF-8 encoding, so this compatibility problem has been greatly reduced. Directly using UTF-8 encoded Chinese characters can reduce data transmission overhead and improve efficiency.

Unicode escapes are only required to avoid garbled code in rare cases, such as when you need to exchange JSON data between incompatible encoding systems (e.g., old systems or specific protocols). But this is already very rare in today's development environment.

Summary: When converting data containing Chinese characters to JSON, Unicode conversion is usually not required. Unless you encounter special coding compatibility issues, you can just use UTF-8 encoding directly, which is more efficient and more in line with modern development practices.

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