There is no getter for property named ‘user’ in ‘class’问题

问题

使用mybatis时报错: “nested exception is org.apache.ibatis.reflection.ReflectionException: There is no getter for property named ‘user’ in ‘class org.springblade.store.common.entity.User’”

可能的原因

1.字段名写错了

2.@Param注解问题

方法只有一个参数时, 如果xml文件中使用#{user.userId}, 则必须添加@Param注解 方法只有一个参数时, 如果xml文件中使用#{userId}, 则不必添加@Param注解

方法有多个参数时, xml文件必须使用#{user.userId}, 不必添加@Param注解

正确写法

写法一

//Mapper.java import org.apache.ibatis.annotations.Param; List<SupplierListVo> getSupplierList(@Param("user") User user); //Mapper.xml <select id="getSupplierList" resultType="SupplierListVo"> SELECT * FROM table WHERE userId = #{user.userId} </select>

写法二

//Mapper.java List<SupplierListVo> getSupplierList(User user); //Mapper.xml <select id="getSupplierList" resultType="SupplierListVo"> SELECT * FROM table WHERE userId = #{userId} </select>

写法三

//Mapper.java List<SupplierListVo> getSupplierList(User user, Form form); //Mapper.xml <select id="getSupplierList" resultType="SupplierListVo"> SELECT * FROM table WHERE userId = #{user.userId} AND orderNo = #{form.orderNo} </select>