若依框架内自带的excel导入导出功能

若依这个框架非常的神la奇ji,每次我想加入某个功能的时候都会报一些奇奇怪怪的错,其他项目里能用的代码复制粘贴过来就报错,然后逛一下官网发现官网已经集成了,然后用他官方集成的就不报错.就只许用你的不许用我自己的是吧?不多吐槽,下面开始.
导入:
controller层:官方是以SysUser为模板,更换为其他对象即可.getUsername是若依的静态方法,return可以为Ajax也可以为R

    @PreAuthorize("@ss.hasPermi('system:user:import')")
    @PostMapping("/importData")
    public AjaxResult importData(MultipartFile file, boolean updateSupport) throws Exception
    {
        ExcelUtil<SysUser> util = new ExcelUtil<SysUser>(SysUser.class);
        List<SysUser> userList = util.importExcel(file.getInputStream());
        String operName = getUsername();
        String message = userService.importUser(userList, updateSupport, operName);
        return AjaxResult.success(message);
    }

对象:主要看里面的@Excel的参数,去除了一些只有name的属性,其他的cellType type readConverterExp等等还没研究 要用刀的时候再去研究

    @Excel(name = "用户序号", cellType = ColumnType.NUMERIC, prompt = "用户编号")
    private Long userId;
    @Excel(name = "部门编号", type = Type.IMPORT)
    private Long deptId;
    @Excel(name = "用户性别", readConverterExp = "0=男,1=女,2=未知")
    private String sex;
    @Excel(name = "帐号状态", readConverterExp = "0=正常,1=停用")
    private String status;
    private String delFlag;
    @Excel(name = "最后登录IP", type = Type.EXPORT)
    private String loginIp;
    @Excel(name = "最后登录时间", width = 30, dateFormat = "yyyy-MM-dd HH:mm:ss", type = Type.EXPORT)
    private Date loginDate;
    /** 部门对象 */
    @Excels({
        @Excel(name = "部门名称", targetAttr = "deptName", type = Type.EXPORT),
        @Excel(name = "部门负责人", targetAttr = "leader", type = Type.EXPORT)
    })
    private SysDept dept;

service层:没啥好说的

    /**
     * 导入用户数据
     * 
     * @param userList 用户数据列表
     * @param isUpdateSupport 是否更新支持，如果已存在，则进行更新数据
     * @param operName 操作用户
     * @return 结果
     */
    public String importUser(List<SysUser> userList, Boolean isUpdateSupport, String operName);

serviceImpl层:分了三种 插入 更新和失败 计数返回

    /**
     * 导入用户数据
     * 
     * @param userList 用户数据列表
     * @param isUpdateSupport 是否更新支持，如果已存在，则进行更新数据
     * @param operName 操作用户
     * @return 结果
     */
    @Override
    public String importUser(List<SysUser> userList, Boolean isUpdateSupport, String operName) {
        if (StringUtils.isNull(userList) || userList.size() == 0)
        {
            throw new ServiceException("导入用户数据不能为空！");
        }
        int successNum = 0;
        int failureNum = 0;
        StringBuilder successMsg = new StringBuilder();
        StringBuilder failureMsg = new StringBuilder();
        String password = configService.selectConfigByKey("sys.user.initPassword");
        for (SysUser user : userList)
        {
            try {
                // 验证是否存在这个用户
                SysUser u = userMapper.selectUserByUserName(user.getUserName());
                if (StringUtils.isNull(u)) {
                    BeanValidators.validateWithException(validator, user);
                    user.setPassword(SecurityUtils.encryptPassword(password));
                    user.setCreateBy(operName);
                    this.insertUser(user);
                    successNum++;
                    successMsg.append("
" + successNum + "、账号 " + user.getUserName() + " 导入成功");
                } else if (isUpdateSupport) {
                    BeanValidators.validateWithException(validator, user);
                    user.setUpdateBy(operName);
                    this.updateUser(user);
                    successNum++;
                    successMsg.append("
" + successNum + "、账号 " + user.getUserName() + " 更新成功");}
                else {
                    failureNum++;
                    failureMsg.append("
" + failureNum + "、账号 " + user.getUserName() + " 已存在");
                }
            }
            catch (Exception e) {
                failureNum++;
                String msg = "
" + failureNum + "、账号 " + user.getUserName() + " 导入失败：";
                failureMsg.append(msg + e.getMessage());
                log.error(msg, e);
            }
        }
        if (failureNum > 0) {
            failureMsg.insert(0, "很抱歉，导入失败！共 " + failureNum + " 条数据格式不正确，错误如下：");
            throw new ServiceException(failureMsg.toString());
        } else {
            successMsg.insert(0, "恭喜您，数据已全部导入成功！共 " + successNum + " 条，数据如下：");
        }
        return successMsg.toString();
    }

导出:同样的 ExcelUtil泛型的对象也要加上@Excel注解,查询出来之后直接导出即可.这倒是非常简单

    @PreAuthorize("@ss.hasPermi('system:user:export')")
    @PostMapping("/export")
    public void export(HttpServletResponse response, SysUser user){
        List<SysUser> list = userService.selectUserList(user);
        ExcelUtil<SysUser> util = new ExcelUtil<SysUser>(SysUser.class);
        util.exportExcel(response, list, "用户数据");
    }

以上,over.