怎么设置在后端的分页插件中设置编码格式为UTF-8？

在后端分页插件中设置编码格式为UTF-8，需要根据具体的开发框架进行设置。以下以Java的MyBatis框架为例进行说明。

在MyBatis框架中，可以通过在`mybatis-config.xml`文件中配置`<settings>`标签来设置编码格式为UTF-8。具体代码如下：

<configuration>
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
        <setting name="jdbcTypeForNull" value="NULL" />
        <setting name="logImpl" value="LOG4J"/>
        <setting name="localCacheScope" value="SESSION"/>
        <setting name="defaultExecutorType" value="SIMPLE"/>
        <setting name="defaultStatementTimeout" value="25000"/>
        <setting name="cacheEnabled" value="true"/>
        <setting name="lazyLoadingEnabled" value="false"/>
        <setting name="aggressiveLazyLoading" value="true"/>
        <setting name="multipleResultSetsEnabled" value="true"/>
        <setting name="useColumnLabel" value="true"/>
        <setting name="useGeneratedKeys" value="false"/>
        <setting name="autoMappingBehavior" value="PARTIAL"/>
        <setting name="autoMappingUnknownColumnBehavior" value="WARNING"/>
        <setting name="defaultScriptingLanguage" value="SQL"/>
        <setting name="callSettersOnNulls" value="false"/>
        <setting name="returnInstanceForEmptyRow" value="false"/>
        <setting name="safeRowBoundsEnabled" value="false"/>
        <setting name="mapUnderscoreToCamelCase" value="false"/>
        <setting name="localCacheScope" value="SESSION"/>
        <setting name="jdbcTypeForNull" value="OTHER"/>
        <setting name="lazyLoadTriggerMethods" value="equals,clone,hashCode,toString"/>
        <setting name="defaultEnumTypeHandler" value="org.apache.ibatis.type.EnumOrdinalTypeHandler"/>
        <setting name="defaultDateTypeHandler" value="org.apache.ibatis.type.LocalDateTimeTypeHandler"/>
        <setting name="useActualParamName" value="true"/>
        <setting name="logPrefix" value="mybatis."/>
        <setting name="configurationFactory" value="org.apache.ibatis.builder.xml.XMLConfigBuilder"/>
        <setting name="defaultSqlProviderType" value="org.apache.ibatis.builder.annotation.ProviderSqlSource"/>
        <setting name="safeResultHandlerEnabled" value="true"/>
        <setting name="sqlResultSetHandlerFactory" value="org.apache.ibatis.executor.resultset.DefaultResultSetHandler"/>
        <setting name="useCursorFetch" value="false"/>
        <setting name="autoDelimitKeywords" value="false"/>
        <setting name="defaultResultSetType" value="FORWARD_ONLY"/>
        <setting name="defaultStatementType" value="PREPARED"/>
        <setting name="defaultFetchSize" value="1000"/>
        <setting name="autoMappingEnabled" value="false"/>
        <setting name="defaultNetworkTimeout" value="5000"/>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
        <setting name="useUnicode" value="true"/>
        <setting name="characterEncoding" value="UTF-8"/>
    </settings>
</configuration>

在`<settings>`标签中添加`<setting>`标签，分别设置`useUnicode`和`characterEncoding`属性为`true`和`UTF-8`，即可将编码格式设置为UTF-8。

另外，需要确保数据库连接的URL中也设置了编码格式为UTF-8。在MySQL中，可以在URL中添加`useUnicode=true&characterEncoding=utf-8`参数来设置编码格式。例如：

jdbc:mysql://localhost:3306/mydatabase?useUnicode=true&characterEncoding=utf-8