依赖工具包

cn.hutool

hutool-all

5.3.5

该工具包是对 Apache POI包的分装

private void export(HttpServletResponse response, String fileName, List> projects, List 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

标签：java,get,excel,getChildren,表头,merge,bigWriter,true,columns

来源： https://www.cnblogs.com/likun10579/p/14488063.html