hutool-all-4.1.19.jar通过ExcelWriter导出复杂表格
已下规则复杂表头也同样适用
这边只讲述复杂导出平常导出请前往官方文档
https://hutool.cn/docs/#/poi/Excel%E5%B7%A5%E5%85%B7-ExcelUtil
//首先创建表头
List rowHead = CollUtil.newArrayList("门店", "套餐名称", "所属分类", "套餐类型", "套餐销售金额", "上下架", "编号", "商品名称", "替换商品(替换套餐)");
// 通过工具类创建writer，默认创建xls格式
ExcelWriter writer = ExcelUtil.getWriter();
try {
//写入表头
writer.writeHeadRow(rowHead);
//定义启始行
int a = 1;
List> rows = new LinkedList<>();
for (BsDishes bsDishes : dishesByAreaIdAndDishesType) {
//可选套餐
if (bsDishes.getMealtype() == 1) {
if (mapBuilder.map().containsKey(bsDishes.getId())) {
List packages = (List) mapBuilder.map().get(bsDishes.getId()); Collections.sort(packages,Comparator.comparing(BsDishesPackage::getDishesid1));
if (packages.size()==1){
a = a + packages.size();
}else {
//规则编写
mergeRule(writer, a, a + packages.size() - 1);
a = a + packages.size();
}
for (BsDishesPackage aPackage : packages) {
List rowA = CollUtil.newArrayList(
bsDishes.getStoreName()
, bsDishes.getName()
, bsDishes.getClsname()
, "可选套餐"
, bsDishes.getPrice()
, bsDishes.getState() == 1 ? "上架" : "下架"
, bsDishes.getCode()
, dishesIdAndDishesName.get(aPackage.getDishesid1())
, ""
);
rows.add(rowA);
}
} else{
mergeRule(writer, a, ++a);
List rowA = CollUtil.newArrayList(
bsDishes.getStoreName()
, bsDishes.getName()
, bsDishes.getClsname()
, "可选套餐"
, bsDishes.getPrice()
, bsDishes.getState() == 1 ? "上架" : "下架"
, bsDishes.getCode()
, ""
, ""
); List rowB = CollUtil.newArrayList(
bsDishes.getStoreName()
, bsDishes.getName()
, bsDishes.getClsname()
, "可选套餐"
, bsDishes.getPrice()
, bsDishes.getState() == 1 ? "上架" : "下架"
, bsDishes.getCode()
, ""
, ""
);
a++;
rows.add(rowA);
rows.add(rowB);
}
}
//替换套餐
else if (bsDishes.getMealtype() == 2){
if (mapBuilder.map().containsKey(bsDishes.getId())) {
List replicas = (List) mapBuilder.map().get(bsDishes.getId());
Collections.sort(replicas,Comparator.comparing(BsDishesReplace::getDishesid1));
Map> collect = replicas.stream().collect(Collectors.groupingBy(BsDishesReplace::getDishesid1));
TreeMap> treeMap=new TreeMap>(collect);
if (replicas.size()==1){
a = a + replicas.size();
}else {
//规则编写
mergeRule(writer, a, a + replicas.size()-1);
int replaceNum=a;
for (Long aLong : treeMap.keySet()) {
if (collect.get(aLong).size()>1) {
writer.merge(replaceNum, replaceNum + collect.get(aLong).size()-1, 7, 7, null, true);**
}
replaceNum=replaceNum+collect.get(aLong).size();
}
a = a + replicas.size();
}
for (BsDishesReplace replica : replicas) {
List rowA = CollUtil.newArrayList(
bsDishes.getStoreName()
, bsDishes.getName()
, bsDishes.getClsname()
, "替换套餐"
, bsDishes.getPrice()
, bsDishes.getState() == 1 ? "上架" : "下架"
, bsDishes.getCode()
, dishesIdAndDishesName.get(replica.getDishesid1())
, dishesIdAndDishesName.get(replica.getDishesid2())
);
rows.add(rowA);
}
} else {
//规则编写
mergeRule(writer, a, ++a);
List rowA = CollUtil.newArrayList(
bsDishes.getStoreName()
, bsDishes.getName()
, bsDishes.getClsname()
, "替换套餐"
, bsDishes.getPrice()
, bsDishes.getState() == 1 ? "上架" : "下架"
, bsDishes.getCode()
, ""
, ""
);List rowB = CollUtil.newArrayList(
bsDishes.getStoreName()
, bsDishes.getName()
, bsDishes.getClsname()
, "替换套餐"
, bsDishes.getPrice()
, bsDishes.getState() == 1 ? "上架" : "下架"
, bsDishes.getCode()
, ""
, ""
);
a++;
rows.add(rowA);
rows.add(rowB);
}
}
}
writer.write(rows);
//设置宽度自适应
writer.setColumnWidth(-1, 22);
//response为HttpServletResponse对象
response.setContentType("application/vnd.ms-excel;charset=utf-8");
//test.xls是弹出下载对话框的文件名，不能为中文，中文请自行编码
response.setHeader("Content-Disposition", "attachment;filename=" + new String(("套餐导出").getBytes("UTF-8"), "ISO-8859-1") + ".xls");
ServletOutputStream out = response.getOutputStream();
//out为OutputStream，需要写出到的目标流
writer.flush(out);
} catch (Exception e) {
e.printStackTrace();
} finally {
// 关闭writer，释放内存
writer.close();
}
定义规则
//定好合并规则
private void mergeRule(ExcelWriter writer, int firstNum, int lastNum) {
writer.merge(firstNum, lastNum, 0, 0, null, true);
writer.merge(firstNum, lastNum, 1, 1, null, true);
writer.merge(firstNum, lastNum, 2, 2, null, true);
writer.merge(firstNum, lastNum, 3, 3, null, true);
writer.merge(firstNum, lastNum, 4, 4, null, true);
writer.merge(firstNum, lastNum, 5, 5, null, true);
writer.merge(firstNum, lastNum, 6, 6, null, true);
}
write为合并的规则合并该行,该列不能重复如果本行没有合并需求就进行跳过不要写入不然会报异常
如果不定义规则导出
定义合并规则导出为
