MyBatis --执行insert后获取主键

最近作工程时遇到这种状况，刚向数据库插入一条记录，立刻须要获得该记录的主键

网上搜索得出以下解决办法

<insert id="insert" parameterType="userInfo" useGeneratedKeys="true" keyProperty="id">
        insert into t_user(user_name,password) values(#{name},#{pswd})
    </insert>

实现层代码以下

        //先添加宠物信息
        CustomerPets customerPets = new CustomerPets();
        
        //customerPets设值
        customerPets.setCustomerId(userId);
        customerPets.setPetName(petName);
        customerPets.setSex(sex);
        customerPets.setPetCategoryId(petCategoryId);
        customerPets.setPetTypeId(petTypeId);
        customerPets.setBirthday(brithday);
        customerPets.setWeight(weight);
        customerPets.setUpdPid(PID);
        customerPets.setUpdUid(userId);
        customerPets.setUseFlag(Constant.UseFlag.USE.getFlag());
        customerPets.setAddUid(userId);
        customerPets.setAddPid(PID);
        
        int success =    customerPetsMapper.insertSelective(customerPets);
        
        if (success == 1) {
        //注意这里取值
        String tmpPetId = customerPets.getPetId();
        }

备注：keyProperty后面的自增加主键，应该与t_user表中主键名称保持一致。