How to retrieve the total number of records in MyBatis?

In MyBatis, you can use the SELECT COUNT(*) query statement to retrieve the total number of records. Here is an example code:

// 定义一个方法来获取总记录条数
public int getTotalCount() {
    try(SqlSession sqlSession = sqlSessionFactory.openSession()) {
        // 执行查询语句
        int totalCount = sqlSession.selectOne("mapperNamespace.getTotalCount");
        return totalCount;
    }
}

// 在映射文件中定义查询语句
<select id="getTotalCount" resultType="int">
    SELECT COUNT(*)
    FROM your_table_name
</select>

In the code above, the getTotalCount() method uses the SqlSession object to execute a query statement and return the results. You need to define a query statement in the mapping file using the SELECT COUNT(*) statement to get the total number of records. Make sure to replace your_table_name with the name of your table.