完成发票信息导出接口，将发票信息导出至Excel中，然后供用户下载

xhpc-modules/xhpc-invoice/src/main/java/com/xhpc/invoice/controller/XhpcInvoiceController.java

@@ -15,7 +15,9 @@ import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.annotation.Resource;
+import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 
@@ -43,9 +45,12 @@ public class XhpcInvoiceController extends BaseController {
      * @since version-1.0
      */
     @GetMapping("/excel")
-    public AjaxResult exportExcel(@RequestParam("invoiceIds") List<Integer> invoiceIds) {
+    public AjaxResult exportExcel(@RequestParam("invoiceIds") String invoiceIds, HttpServletResponse response) throws IOException {
-        //todo 将指定发票信息导入到excel表中，然后返回出去
+        //处理字符串，转换成数组
-        return AjaxResult.success("https://xhpc-bucket1.oss-cn-hangzhou.aliyuncs.com/69852145895461/202109151137358636985214589546101.png");
+        String[] ids = invoiceIds.split(",");
+        List<String> resultList = Arrays.asList(ids);
+        xhpcInvoiceService.exportExcel(resultList, response);
+        return AjaxResult.success();
     }
 
 
@@ -62,7 +67,7 @@ public class XhpcInvoiceController extends BaseController {
     @PostMapping("/pdf")
     public AjaxResult uploadPdf(MultipartFile invoicePdf) throws IOException {
 
-        String filename = "electronicInvoice" + DateUtils.dateTimeNow() + ".pdf";
+        String filename = "electricInvoice" + DateUtils.dateTimeNow() + ".pdf";
         // 上传文件到阿里云
         OSSClient ossClient = new OSSClient(environment.getProperty("oss.endpoint"), environment.getProperty("oss.access-key"), environment.getProperty("oss.secret-key"));
         // 放置到哪个块中去，key为目录，file为文件

xhpc-modules/xhpc-invoice/src/main/java/com/xhpc/invoice/domain/ExcelInvoiceRow.java

@@ -0,0 +1,47 @@
+package com.xhpc.invoice.domain;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 用于存储导出发票的一行记录的Bean类
+ *
+ * @author WH
+ * @date 2021/12/30 14:13
+ * @since version-1.0
+ */
+@Data
+@NoArgsConstructor
+public class ExcelInvoiceRow {
+
+    private Integer rowsNumber;
+    private String invoiceType;
+    private String receiveEmail;
+    private String titleType;
+    private String titleContent;
+    private String dutyNumber;
+    private String invoiceContent;
+    private String invoiceOrderElectricTotalMoney;
+    private String invoiceOrderServiceTotalMoney;
+    private String firmAddress;
+    private String firmPhone;
+    private String firmBank;
+    private String firmBankAccount;
+    private String isShowDate;
+    private String userNotes;
+    private String creatorType;
+    private String iCreateTime;
+    private String invoicingTime;
+    private String drawer;
+    private String financeNotes;
+    private String electricInvoiceUrl;
+    private String isRead;
+    private String historySerialNumber;
+    private String powerPriceTotal;
+    private String servicePriceTotal;
+    private String promotionDiscount;
+    private String historyActPrice;
+    private String hCreateTime;
+    private String chargingMode;
+
+}

xhpc-modules/xhpc-invoice/src/main/java/com/xhpc/invoice/mapper/XhpcInvoiceMapper.java

@@ -1,6 +1,7 @@
 package com.xhpc.invoice.mapper;
 
 import com.xhpc.invoice.domain.AllInvoiceOrdersRequest;
+import com.xhpc.invoice.domain.ExcelInvoiceRow;
 import com.xhpc.invoice.domain.InvoiceHistoryRecordsRequest;
 import com.xhpc.invoice.domain.InvoiceToUserRequest;
 import com.xhpc.invoice.pojo.XhpcInvoice;
@@ -176,4 +177,15 @@ public interface XhpcInvoiceMapper {
      */
     void updateByInvoiceId(Long invoiceId);
 
+    /**
+     * 获取发票内容
+     *
+     * @param invoiceId 发票id
+     * @return 专门用于放置到Excel中Map
+     * @author WH
+     * @date 2021/12/30 18:08
+     * @since version-1.0
+     */
+    List<ExcelInvoiceRow> selectExcelInvoiceById(Long invoiceId);
+
 }

xhpc-modules/xhpc-invoice/src/main/java/com/xhpc/invoice/service/XhpcInvoiceService.java

@@ -2,6 +2,10 @@ package com.xhpc.invoice.service;
 
 import com.xhpc.invoice.domain.*;
 
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.util.List;
+
 /**
  * 用于处理发票相关请求的Service
  *
@@ -133,4 +137,16 @@ public interface XhpcInvoiceService {
      */
     Long findNotReadCount(Long creatorId, Integer creatorType);
 
+    /**
+     * 导出所有发票记录（已开与未开）到Excel中
+     *
+     * @param invoiceIds 发票id
+     * @param response   响应的response
+     * @throws IOException 该Response对象不存在时，抛出该异常对象
+     * @author WH
+     * @date 2021/12/30 10:16
+     * @since version-1.0
+     */
+    void exportExcel(List<String> invoiceIds, HttpServletResponse response) throws IOException;
+
 }

xhpc-modules/xhpc-invoice/src/main/java/com/xhpc/invoice/service/impl/XhpcInvoiceServiceImpl.java

@@ -1,6 +1,5 @@
 package com.xhpc.invoice.service.impl;
 
-import cn.hutool.core.collection.CollUtil;
 import cn.hutool.extra.mail.MailUtil;
 import cn.hutool.http.HttpUtil;
 import cn.hutool.poi.excel.ExcelUtil;
@@ -22,7 +21,9 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 import javax.annotation.Resource;
+import javax.servlet.http.HttpServletResponse;
 import java.io.File;
+import java.io.IOException;
 import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.List;
@@ -481,22 +482,94 @@ public class XhpcInvoiceServiceImpl implements XhpcInvoiceService {
      * 导出所有发票记录（已开与未开）到Excel中
      *
      * @param invoiceIds 发票id
+     * @param response   响应对象
      * @author WH
      * @date 2021/12/30 10:16
      * @since version-1.0
      */
     @Override
-    public void exportExcel(List<Integer> invoiceIds) {
+    public void exportExcel(List<String> invoiceIds, HttpServletResponse response) throws IOException {
-
+        //创建Excel写入对象
-        Integer integer = invoiceIds.get(0);
+        ExcelWriter writer = ExcelUtil.getWriter("record.xlsx");
-        //获取要导出的发票记录
+        //设置单元格标题别名
-        XhpcInvoice xhpcInvoice = xhpcInvoiceMapper.selectByPrimaryKey(Long.valueOf(integer));
+        setExcelCellName(writer);
-        List<XhpcInvoice> rows = CollUtil.newArrayList(xhpcInvoice);
+        //定义每一行的行号（1，2，3，4...）
-        //写出记录到excel表中
+        int rowsNumber = 1;
-        ExcelWriter writer = ExcelUtil.getWriter("d:/writeTest.xlsx");
+        //设定初始合并行参数（即第一行该从哪行开始合并，合并几行）
-        writer.write(rows);
+        int rowStart = 1;
-        writer.close();
+        int lastRow = 0;
+        for (String invoiceId : invoiceIds) {
+            List<ExcelInvoiceRow> excelInvoiceRows = xhpcInvoiceMapper.selectExcelInvoiceById(Long.valueOf(invoiceId));
+            //往记录中塞入行号
+            for (ExcelInvoiceRow excelInvoiceRow : excelInvoiceRows) {
+                excelInvoiceRow.setRowsNumber(rowsNumber);
+            }
+            //写入记录
+            writer.write(excelInvoiceRows);
+            int invoiceCount = excelInvoiceRows.size();
+            //如果写入的发票记录只有一个，就不合并单元格，增加合并行索引，为下面需要合并的行做准备。
+            if (invoiceCount == 1) {
+                lastRow = lastRow + 1;
+                rowStart = rowStart + 1;
+            } else {
+                //计算每条要合并发票记录的行的最后一个行号
+                lastRow = lastRow + invoiceCount;
+                //合并单元格
+                for (int columnIndex = 0; columnIndex <= 21; columnIndex++) {
+                    writer.merge(rowStart, lastRow, columnIndex, columnIndex, null, false);
+                }
+                //计算每条要合并发票记录的行的第一个行号
+                rowStart = rowStart + invoiceCount;
+            }
+            rowsNumber++;
+        }
+        //设置文件类型
+        response.setContentType(ExcelUtil.XLSX_CONTENT_TYPE);
+        //让浏览器下载
+        response.addHeader("Content-Disposition", "attachment;filename=" + "invoiceRecord.xlsx"); //设置返回的文件名称
         //写入到Response中
+        writer.flush(response.getOutputStream(), true);
+    }
+
+    /**
+     * 设置生成的Excel表格单元格标题
+     *
+     * @param writer Excel写入器
+     * @author WH
+     * @date 2021/12/31 11:10
+     * @since version-1.0
+     */
+    private void setExcelCellName(ExcelWriter writer) {
+
+        writer.addHeaderAlias("rowsNumber", "序号");
+        writer.addHeaderAlias("invoiceType", "发票类型");
+        writer.addHeaderAlias("receiveEmail", "接收邮箱");
+        writer.addHeaderAlias("titleType", "抬头类型");
+        writer.addHeaderAlias("titleContent", "抬头内容");
+        writer.addHeaderAlias("dutyNumber", "税号");
+        writer.addHeaderAlias("invoiceContent", "发票内容");
+        writer.addHeaderAlias("invoiceOrderElectricTotalMoney", "总电量金额");
+        writer.addHeaderAlias("invoiceOrderServiceTotalMoney", "总服务费金额");
+        writer.addHeaderAlias("firmAddress", "地址");
+        writer.addHeaderAlias("firmPhone", "电话号码");
+        writer.addHeaderAlias("firmBank", "开户行");
+        writer.addHeaderAlias("firmBankAccount", "银行开户账号");
+        writer.addHeaderAlias("isShowDate", "用户是否要求展示交易日期");
+        writer.addHeaderAlias("userNotes", "用户备注");
+        writer.addHeaderAlias("creatorType", "用户类型");
+        writer.addHeaderAlias("iCreateTime", "发票申请时间");
+        writer.addHeaderAlias("invoicingTime", "发票开票时间");
+        writer.addHeaderAlias("drawer", "开票人");
+        writer.addHeaderAlias("financeNotes", "财物备注");
+        writer.addHeaderAlias("electricInvoiceUrl", "电子发票地址");
+        writer.addHeaderAlias("isRead", "用户是否阅读发票信息");
+        writer.addHeaderAlias("historySerialNumber", "订单编号");
+        writer.addHeaderAlias("powerPriceTotal", "订单电费");
+        writer.addHeaderAlias("servicePriceTotal", "订单服务费");
+        writer.addHeaderAlias("promotionDiscount", "折扣费用");
+        writer.addHeaderAlias("historyActPrice", "用户实际支付金额");
+        writer.addHeaderAlias("hCreateTime", "订单创建时间");
+        writer.addHeaderAlias("chargingMode", "订单来源");
     }
 
 

xhpc-modules/xhpc-invoice/src/main/resources/mapper/XhpcInvoiceMapper.xml

@@ -188,6 +188,48 @@
           AND creator_id = #{creatorId}
           AND creator_type = #{creatorType}
     </select>
+    <select id="selectExcelInvoiceById" resultType="com.xhpc.invoice.domain.ExcelInvoiceRow">
+        SELECT case i.invoice_type when 0 then '普票' when 1 then '专票' end                                          as invoiceType,
+               i.receive_email                                                                                    as receiveEmail,
+               case i.title_type when 0 THEN '企业' ELSE '个人/非企业' END                                               as titleType,
+               i.title_content                                                                                    as titleContent,
+               i.duty_number                                                                                      as dutyNumber,
+               i.invoice_content                                                                                  as invoiceContent,
+               i.invoice_money                                                                                    as invoiceOrderElectricTotalMoney,
+               i.invoice_order_service_total_money                                                                as invoiceOrderServiceTotalMoney,
+               i.firm_address                                                                                     as firmAddress,
+               i.firm_phone                                                                                       as firmPhone,
+               i.firm_bank                                                                                        as firmBank,
+               i.firm_bank_account                                                                                as firmBankAccount,
+               case i.is_show_date when 0 then '开票者要求展示交易日期' ELSE '开票者不要求展示交易日期' END                              as isShowDate,
+               i.user_notes                                                                                       as userNotes,
+               case i.creator_type
+                   when 0 then 'C端用户'
+                   when 1 then '流量方'
+                   when 2 then '社区用户'
+                   when 3
+                       then '企业用户' END                                                                            as creatorType,
+               i.creator                                                                                          as creator,
+               i.create_time                                                                                      as iCreateTime,
+               case i.status when 0 then '未开票' when 1 then '已开票' when 2 then '开票失败' END                           as status,
+               i.invoicing_time                                                                                   as invoicingTime,
+               i.drawer,
+               i.finance_notes                                                                                    as financeNotes,
+               i.electric_invoice_url                                                                             as electricInvoiceUrl,
+               case i.is_read when 1 then '已阅读' when 0 then '未阅读' else '该发票还未处理' END                              as isRead,
+               h.hisotry_serial_number                                                                            as historySerialNumber,
+               h.power_price_total                                                                                as powerPriceTotal,
+               h.service_price_total                                                                              as servicePriceTotal,
+               h.promotion_discount                                                                               as promotionDiscount,
+               history_act_price                                                                                  as historyActPrice,
+               h.create_time                                                                                      as hCreateTime,
+               h.charging_mode                                                                                    as chargingMode
+        FROM xhpc_invoice AS i
+                 INNER JOIN xhpc_invoice_map_history_order AS h ON i.invoice_id = h.invoice_id
+        WHERE i.invoice_id = #{invoiceId}
+          AND i.del_flag IS NULL
+          AND h.del_flag IS NULL
+    </select>
     <delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
         delete
         from xhpc_invoice