mybatis获得对象参数

@Insert("insert into data_info_all(operator,operation,oper_time,type_id) values (#{operator},#{operation},#{operTime},#{typeId}) ")
Integer addOperationInfo(DataInfo dataInfo);

正常运行

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@Insert("insert into data_info_all(operator,operation,oper_time,type_id) values (#{operator},#{operation},#{operTime},#{typeId}) ")
Integer addOperationInfo(@Param("dataInfo")DataInfo dataInfo);

测试代码

@Test
void addOperationInfoTest222222(){
    LocalDateTime ldt1 = LocalDateTime.of(2017, Month.JANUARY, 4, 17, 23, 52);
    DataInfo dataInfo=new DataInfo("王五6","创建了一个队伍",ldt1,1);
    dataInfoDao.addOperationInfo(dataInfo);

}

报错

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter 'operator' not found. Available parameters are [dataInfo, param1]

修改为下面的代码

@Insert("insert into data_info_all(operator,operation,oper_time,type_id) values (#{dataInfo.operator},#{dataInfo.operation},#{dataInfo.operTime},#{dataInfo.typeId}) ")
Integer addOperationInfo(@Param("dataInfo")DataInfo dataInfo);

正常运行

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当传入的参数是单个对象时，如果没用@Param可以直接使用属性名引用，如果用了@Param，要用"对象.属性名"获取

参考 https://stackoverflow.com/questions/59668117/how-to-properly-use-the-param-annotation-of-mybatis