spring boot + mybatis实现批量插入数据

场景描述：前端以List的形式传入多条待插入数据，调用mybatis-generator自动生成的insert接口一次只能插入一条数据，当然可以写一个for循环一条条插入，但感觉效率太低；所以尝试下一条sql插入多条数据；

解决方案：使用foreach方法来实现多条记录的批量插入

实现方式如下：

controller

@ApiOperation(value = "新增多个部门")
@PostMapping("insertDepartments")
public ResultMsg newDepartment(@RequestBody List<Department > departments ) {
    int result = departmentService.insertDepts(departments);
    return ResultMsg.getStrMsg(result > 0 ? "SUCCESS" : "FAILED");
}

service

public int insertDepts(List<Department > departments)
{
    try{
        return departmentMapper.insertDepartments(departments);
    }catch (Exception e )
    {
        logger.info(e.toString());
        return -1;
    }
}

mapper

int insertDepartments(List<Department> list);

xml

<insert id="insertDepartments" useGeneratedKeys="true" keyProperty="id" parameterType="com.wg.demo.po.Department">
  insert into department (id, dept_name, descr, 
    create_time)
  values
    <foreach collection="list" item="dept" index="index" separator=",">
      (#{dept.id,jdbcType=BIGINT}, #{dept.deptName,jdbcType=VARCHAR}, #{dept.descr,jdbcType=VARCHAR},
      #{dept.createTime,jdbcType=TIMESTAMP})
    </foreach>
</insert>

测试：