The function of CDATA in MyBatis

In MyBatis, markers are used to wrap SQL statements or other text content, indicating to MyBatis that this section should be outputted as-is without any XML character escaping.

The main functions of CDATA are as follows:

1. Prevent special characters from being escaped: In XML, certain special characters (such as <, >, &, “) may be interpreted by the parser as tags or entity references instead of being output as text content. Content wrapped in CDATA will not be processed by the parser and can be output as is.
2. When writing SQL statements in MyBatis, it is common to include numerous special characters and keywords. Using CDATA can help prevent syntax errors caused by these special characters or keywords.
3. Improving readability: Using CDATA allows for long SQL statements or other text content to be formatted with line breaks and indentation, enhancing the readability of XML files.

In conclusion, the role of CDATA in MyBatis is to wrap SQL statements or other text content, informing MyBatis that this part of the content needs to be output as is without having XML special characters escaped.