我要评论问题描述：
想要实现这个接口，同时传入planid和projectplans，屡次报错。好在一路坎坷，解决了多方bug,最后终于搞定了
void insertlist(@param("planid") integer planid, @param("projectplans") list<projectplan> projectplans);1 刚开始爆绑定失败
后来发现原来是我的xml文件没有写mapper后缀
2 多个参数传值用@param失败
别人说用这个，但是发现根本不行，
void insertlist(@param("planid") integer planid, @param("projectplans") list<projectplan> projectplans); <insert id="insertlist" parametertype="java.util.map">
insert into nursing_project_plan (plan_id,project_id,execute_time,execute_cycle,
execute_frequency,create_by, update_by, create_time, update_time,remark) values
<foreach collection="projectplans" item="project" separator=",">
(#{planid},#{project.projectid},#{project.executetime},#{project.executecycle},
#{project.executefrequency},#{project.createby},#{project.updateby},#{project.createtime},#{project.updatetime},#{project.remark}
)
</foreach>
</insert>解决思路
报错信息
org.mybatis.spring.mybatissystemexception: nested exception is org.apache.ibatis.binding.bindingexception: parameter 'customeridlist' not found. available parameters are [arg0, collection, list]
解释：
解释：
当我们传递一个 list 实例或者数组作为参数对象传给 mybatis。当你这么做的时候,mybatis 会自动将它包装在一个 map 中,用名称在作为键。list 实例将会以list 作为键,而数组实例将会以array作为键。所以，当我们传递的是一个list集合时，mybatis会自动把我们的list集合包装成以list为key值的map。
错误代码：
mapper层
void insertlist(list<projectplan>projectplans ); //这个方法也是会错 void insertlist(list<projectplan>projectplans ,integer planid);
xml层
<insert id="insertlist" >
insert into nursing_project_plan (plan_id,project_id,execute_time,execute_cycle,
execute_frequency,create_by, update_by, create_time, update_time,remark) values
<foreach collection="projectplans" item="project" separator=",">
(#{planid},#{project.projectid},#{project.executetime},#{project.executecycle},
#{project.executefrequency},#{project.createby},#{project.updateby},#{project.createtime},#{project.updatetime},#{project.remark}
)
</foreach>
</insert>解决方法
service层
（封装成map)
map maps = new hashmap();
maps.put("projectplans", projectplans);
maps.put("planid", 2);
nursingprojectplanmapper.insertlist(maps);mapper层
void insertlist( map maps);
xml层
<insert id="insertlist" parametertype="java.util.map">
insert into nursing_project_plan (plan_id,project_id,execute_time,execute_cycle,
execute_frequency,create_by, update_by, create_time, update_time,remark) values
<foreach collection="projectplans" item="project" separator=",">
(#{planid},#{project.projectid},#{project.executetime},#{project.executecycle},
#{project.executefrequency},#{project.createby},#{project.updateby},#{project.createtime},#{project.updatetime},#{project.remark}
)
</foreach>
</insert>成功了
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