关于EasyPoi导出Excel

如果你觉得Easypoi不好用,喜欢用传统的poi,可以参考我的这篇博客:Springmvc导出Excel(maven)

当然了,万变不离其宗。Easypoi的底层原理还是poi。正如MyBatis Plus的原理还是MyBatis那套。只不过它们的共同点是封装起来。

关于Easypoi记得初次接触的时候,给我的感觉是看起来很简单很容易让人理解,而且文档也比较丰富,也是jeecg的开源项目下的子项目。

记得当初为了提高代码开发效率,去码云和github上游荡游荡,突然发现了一个叫jeecg的玩意,于是研究了下,这个研究不是特别深,只是将其项目跑起来,看看它有哪些组件,顺便看看源码,和玩玩它强大的插件式开发和easypoi。

jeecg中的easypoi的项目地址为:https://gitee.com/jeecg/jeasypoi

jeecg中的easypoi的官方详细文档为:http://easypoi.mydoc.io/

 

大家要牢记一个经济方面的格言:物质基础决定上层建筑。

对计算机专业的同志们而言,良好的计算机基础,是以后编程世界的驰骋飞扬的基石。

所以在校的同志们,一定要好好学习天天向上。

闲话就不多说了,下面进入正题。

 

一、导入依赖

<!-- easypoi导入导出excel -->    
   <dependency>
          <groupId>cn.afterturn</groupId>
          <artifactId>easypoi-base</artifactId>
          <version>3.1.0</version>
      </dependency>
      <dependency>
          <groupId>cn.afterturn</groupId>
          <artifactId>easypoi-web</artifactId>
          <version>3.1.0</version>
      </dependency>
      <dependency>
          <groupId>cn.afterturn</groupId>
          <artifactId>easypoi-annotation</artifactId>
          <version>3.1.0</version>
      </dependency>
      

 

二、构建实体

@ExcelTarget("FinanceTrade")
@TableName("rms_finance_trade")
public class FinanceTrade extends Model<FinanceTrade> {

    private static final long serialVersionUID = 1L;

    @TableId("trade_no")
    private String tradeNo;
    
    @Excel(name="订单号")
    @TableField("order_no")
    private String orderNo;
    /**
     * 用户id
     */
    @TableField("user_id")
    private String userId;
    /**
     * 交易创建时间
     */
    @Excel(name="创建时间",width=30)
    @TableField("create_time")
    private String createTime;
    /**
     * 实际支付金额
     */
    @Excel(name="实际支付金额")
    private BigDecimal amount;
    /**
     * 交易状态支付成功转入退款未支付已关闭已撤销支付失败
     */
    private String status;
    /**
     * 流水标题
     */
    private String subject;
    
    @TableField("finish_time")
    private String finishTime;
    /**
     * 类型:余额支付balance、微信支付wx
     */
    private String type;
    /**
     * 资金流向:1:收入 ;0:支出
     */
    private String flows;
    /**
     * 备注
     */
    private String remarks;
    
   
    /**
     * 支付类型:余额,微信,混合支付等
     */
    @TableField(exist=false)
    @Excel(name="支付类型")
    private String payType;
    
    /**
     * 费用名称
     */
    @TableField(exist=false)
    @Excel(name="费用名称")
    private String amountType;
    
    @TableField(exist=false)
    private String leafNode;
    
    @TableField(exist=false)
    private String address;
    
    @TableField(exist=false)
    private String node;
    
    @TableField(exist=false)
    private String subNode;
    
    @TableField(exist=false)
    @Excel(name="账户",width=30)
    public String loginCode;
    
    @TableField(exist=false)
    @Excel(name="支付人")
    public String userName;
    

    
    
    /**
     * 公司编码
     * @return
     */
    @TableField(value="company_code")
    private String companyCode;
    
    /**
     * 用户
     */
    @TableField(exist=false)
    List<SysUser> sysUser;
    
    /**
     * 订单
     */
    @TableField(exist=false)
    List<FinanceOrder> order;

    public String getLoginCode() {
        return loginCode;
    }

    public void setLoginCode(String loginCode) {
        this.loginCode = loginCode;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getLeafNode() {
        return leafNode;
    }

    public void setLeafNode(String leafNode) {
        this.leafNode = leafNode;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public String getNode() {
        return node;
    }

    public void setNode(String node) {
        this.node = node;
    }

    public String getSubNode() {
        return subNode;
    }

    public void setSubNode(String subNode) {
        this.subNode = subNode;
    }

    public String getPayType() {
        return payType;
    }

    public void setPayType(String payType) {
        this.payType = payType;
    }

    public String getAmountType() {
        return amountType;
    }

    public void setAmountType(String amountType) {
        this.amountType = amountType;
    }

    
    public String getCompanyCode() {
        return companyCode;
    }

    public void setCompanyCode(String companyCode) {
        this.companyCode = companyCode;
    }

    public String getTradeNo() {
        return tradeNo;
    }

    public void setTradeNo(String tradeNo) {
        this.tradeNo = tradeNo;
    }

    public String getOrderNo() {
        return orderNo;
    }

    public void setOrderNo(String orderNo) {
        this.orderNo = orderNo;
    }

    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }

    public String getCreateTime() {
        return createTime;
    }

    public void setCreateTime(String createTime) {
        this.createTime = createTime;
    }

    public BigDecimal getAmount() {
        return amount;
    }

    public void setAmount(BigDecimal amount) {
        this.amount = amount;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public String getSubject() {
        return subject;
    }

    public void setSubject(String subject) {
        this.subject = subject;
    }

    public String getFinishTime() {
        return finishTime;
    }

    public void setFinishTime(String finishTime) {
        this.finishTime = finishTime;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getFlows() {
        return flows;
    }

    public void setFlows(String flows) {
        this.flows = flows;
    }

    public String getRemarks() {
        return remarks;
    }

    public void setRemarks(String remarks) {
        this.remarks = remarks;
    }

    @Override
    protected Serializable pkVal() {
        return this.tradeNo;
    }

    public List<SysUser> getSysUser() {
        return sysUser;
    }

    public void setSysUser(List<SysUser> sysUser) {
        this.sysUser = sysUser;
    }

    public List<FinanceOrder> getOrder() {
        return order;
    }

    public void setOrder(List<FinanceOrder> order) {
        this.order = order;
    }

    @Override
    public String toString() {
        return "FinanceTrade [tradeNo=" + tradeNo + ", orderNo=" + orderNo + ", userId=" + userId + ", createTime="
                + createTime + ", amount=" + amount + ", status=" + status + ", subject=" + subject + ", finishTime="
                + finishTime + ", type=" + type + ", flows=" + flows + ", remarks=" + remarks
                + ", payType=" + payType + ", amountType=" + amountType + ", leafNode=" + leafNode + ", address="
                + address + ", node=" + node + ", subNode=" + subNode + ", companyCode=" + companyCode + "]";
    }
}
  • @Excel 作用到filed上面,是对Excel一列的一个描述
  • @ExcelCollection 表示一个集合,主要针对一对多的导出,比如一个老师对应多个科目,科目就可以用集合表示
  • @ExcelEntity 表示一个继续深入导出的实体,但他没有太多的实际意义,只是告诉系统这个对象里面同样有导出的字段
  • @ExcelIgnore 和名字一样表示这个字段被忽略跳过这个导导出
  • @ExcelTarget 这个是作用于最外层的对象,描述这个对象的id,以便支持一个对象可以针对不同导出做出不同处理

 

 

上面截图我只是截取官方文档上的一部分,大家想详细知道,可参考官方文档:http://easypoi.mydoc.io/#text_197835

 

三、编写对应的Controller


@Controller
@RequestMapping(value = "easypoi")
public class ExportExcelTest {

     @Autowired
     private FinanceTradeService financeTradeService;
         
      /**
       * 导出Excel 营业收入支出明细
       * @param companyCode
       * @param flows
       * @param response
       * @return
       */
      @GetMapping(value="exportBillDatailInfo")
      @ResponseBody
      public String exportBillDatailInfo(HttpServletRequest request,HttpServletResponse response){
            String companyCode = request.getParameter("companyCode");
            String flows = request.getParameter("flows");
            System.out.println("companyCode:"+companyCode);
            System.out.println("flows:"+flows);
            // 获取workbook对象
            // 单sheet或多sheet 只需要更改此处即可
            Workbook workbook = exportSheets(companyCode,flows) ;
            // 判断数据
            if(workbook == null) {
                return "fail";
            }
            // 设置excel的文件名称
            String excelName = "测试excel" ;
            // 重置响应对象
            response.reset();
            // 当前日期,用于导出文件名称
            SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
            String dateStr = "["+excelName+"-"+sdf.format(new Date())+"]";
            // 指定下载的文件名--设置响应头
            response.setHeader("Content-Disposition", "attachment;filename=" +dateStr+".xls");
            response.setContentType("application/vnd.ms-excel;charset=UTF-8");
            response.setHeader("Pragma", "no-cache");
            response.setHeader("Cache-Control", "no-cache");
            response.setDateHeader("Expires", 0);
            // 写出数据输出流到页面
            try {
                OutputStream output = response.getOutputStream();
                BufferedOutputStream bufferedOutPut = new BufferedOutputStream(output);
                workbook.write(bufferedOutPut);
                bufferedOutPut.flush();
                bufferedOutPut.close();
                output.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return "success";
     }
      
    
    /**
     * 多sheet导出
     * @return
     */
    public Workbook exportSheets(String companyCode,String flows){
       
        
        //将条件放入Map中
        Map<String,Object> conditionMap = new HashMap<String,Object>();
        
        conditionMap.put("companyCode", companyCode);
        conditionMap.put("flows", flows);
        conditionMap.put("start", 0);
        conditionMap.put("size", 100);
        
        //获得营业明细(含收支)信息
        List<FinanceTrade> list = financeTradeService.getSpeedingDetailInfo(conditionMap);

        // 创建参数对象(用来设定excel得sheet得内容等信息)
        ExportParams params1 = new ExportParams() ;
        // 设置sheet得名称
        params1.setSheetName("营业收支明细"); ;

        // 创建sheet1使用得map
        Map<String,Object> dataMap1 = new HashMap<>();
        // title的参数为ExportParams类型,目前仅仅在ExportParams中设置了sheetName
        dataMap1.put("title",params1) ;
        // 模版导出对应得实体类型
        dataMap1.put("entity",FinanceTrade.class) ;
        // sheet中要填充得数据
        dataMap1.put("data",list) ;
 
        // 将sheet1和sheet2使用得map进行包装
        List<Map<String, Object>> sheetsList = new ArrayList<>() ;
        sheetsList.add(dataMap1);
        // 执行方法
        return ExcelExportUtil.exportExcel(sheetsList, ExcelType.HSSF) ;
    }
    
}

 

小结:上面主要是关于Spring+MyBatis Plus+SpringMVC+EasyPoi+MySQL,更多简单例子可以去官方文档上看或者参照下面博客地址也可以:

EasyPoi导入导出:https://www.cnblogs.com/xiexy/p/8044393.html

EasyPoi导出示例:http://www.leftso.com/blog/329.html(该例非常简单,很通俗易懂)

 

posted @ 2018-08-01 21:26 挑战者V 阅读(...) 评论(...) 编辑 收藏