The content of element type “mapper“ must match “(cache-ref|cache|resultMap*|parameterMap*|sql*|inse

这段话的意思是告诉你标签没有写全 比如<update>和</update> 标签要闭合(一对),检查重写就行了

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.sky.mapper.EmployeeMapper">
    <select id="pageQuery" resultType="com.sky.entity.Employee">
        select * from sky_take_out.employee
        <where>
            <if test="name!=null and name!=''">
                and name like concat('%',#{name},'%')
            </if>
        </where>
        order by create_time desc
    </select>
    <update id="update">
        update sky_take_out.employee
        <set>
            <if test="name!=null">name=#{name}</if>
            <if test="username!=null">username=#{username}</if>
            <if test="password!=null">password=#{password}</if>
            <if test="phone!=null">phone=#{phone}</if>
            <if test="sex!=null">sex=#{sex}</if>
            <if test="idNumber!=null">idNumber=#{idNumber}</if>
            <if test="updateTime!=null">updateTime=#{updateTime}</if>
            <if test="updateUser!=null">updateUser=#{updateUser}</if>
            <if test="status!=null">status=#{status}</if>
        </set>
        where id=#{id}
    </update>
</mapper>