Mybatis error: The content of the element must be composed of character data or tags in the correct format. Reasons and solutions

reason¶

When querying mybatis, you need to use operators less than < and greater than >. In the mybatis configuration file, this is considered as a label, so the parsing error

Error example¶

<if test="params.perCapita != null and params.perCapita !=''">
                 and perCapita <= #{params.perCapita}
            </if>

Should be changed to:

<if test="params.perCapita != null and params.perCapita !=''">
                <![CDATA[ and perCapita <= #{params.perCapita} ]]>
            </if>