在使用mybaitis传参数的时候，如果仅传入一个类型为String的参数，那么在 xml文件中应该使用_parameter来代替参数名。
<select id="getBookingCount" resultType="int" parameterType="string">
select count(*) from TB_EMPC_BOOKING_ORDER T
where (t.state = ‘1‘ or t.state = ‘2‘)
and t.appointmenttime = #{state}
</select>
<select id="getBookingCount" resultType="int" parameterType="string">
select count(*) from TB_EMPC_BOOKING_ORDER T
where (t.state = ‘1‘ or t.state = ‘2‘)
and t.appointmenttime = #{_parameter}
</select>
public int methodName(@Param(value="state") String state ){
...
}
mybaits错误解决：There is no getter for property named 'id' in class 'java.lang.String
原文：https://www.cnblogs.com/iapetosee/p/10970844.html