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  • java 生成excel (多级表头)导出

    依赖工具包 

    <dependencies>
    <dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.3.5</version>
    </dependency>
    </dependencies>
    该工具包是对 Apache POI包的分装
        private void export(HttpServletResponse response, String fileName, List<?> projects, List<SummarizeDownloadColumns> columns) throws IOException {
            ExcelWriter bigWriter = ExcelUtil.getBigWriter();
    //创建一行空表头占个位置 bigWriter.writeHeadRow(
    new LinkedList());
    //创建需要展示的的二级表头,{filedName,中文名}
    int lastCol = 0; for (int i = 0; i < columns.size(); i++) { if (columns.get(i).getChildren() != null) { for (int j = 0; j < columns.get(i).getChildren().size(); j++) { bigWriter.addHeaderAlias(columns.get(i).getChildren().get(j).getProp(), columns.get(i).getChildren().get(j).getLabel() + columns.get(i).getProp()); bigWriter.setColumnWidth(lastCol++, 30); } } }
    //根据需要合并添加第一列表头 bigWriter.merge(
    0, 1, 0, 0, columns.get(0).getLabel(), true); bigWriter.merge(0, 0, 1, 14, "第一类(个人)", true); bigWriter.merge(0, 0, 15, 28, "第一类(企业)", true); bigWriter.merge(0, 0, 29, 42, "第二类(个人)", true); bigWriter.merge(0, 0, 43, 56, "第二类(企业)", true); bigWriter.merge(0, 0, 57, 64, "总计项", true); // 只导出配置好的列名 bigWriter.setOnlyAlias(true); bigWriter.write(projects, true); StyleSet styleSet = bigWriter.getStyleSet(); styleSet.setWrapText(); response.setContentType("application/vnd.ms-excel;charset=utf-8"); response.setHeader("filename", URLEncoder.encode(fileName + ".xlsx", "UTF-8")); ServletOutputStream out = response.getOutputStream(); bigWriter.flush(out, true); bigWriter.close(); IoUtil.close(out); }

    导出效果




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  • 原文地址:https://www.cnblogs.com/likun10579/p/14488063.html
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