POI的maven依赖:
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
EasyExcel.java的代码:
public static void POIExcel(List<Map<String,Object>> AllDataList, String excelPath) throws IOException{ OutputStream out = new FileOutputStream(excelPath); String sheetName = ""; List<List<String>> titles = new ArrayList<List<String>>(); List<List<String>> sheetData = new ArrayList<List<String>>(); int size = AllDataList.size(); Map<String,Object> map = new HashMap<>(); XSSFWorkbook xssfWorkbook = new XSSFWorkbook(); //超链接样式 XSSFCellStyle hlink_style = xssfWorkbook.createCellStyle(); XSSFFont hlink_font = xssfWorkbook.createFont(); hlink_font.setUnderline(HSSFFont.U_SINGLE); hlink_font.setColor(HSSFColor.BLUE.index); hlink_style.setFont(hlink_font); //循环sheet for(int i=0 ; i<size ; i++ ){ map = AllDataList.get(i); sheetName = StringUtils.nvlString(map.get("sheetName")); titles = (List<List<String>>) map.get("tabHeader"); sheetData = (List<List<String>>) map.get("sheetData"); XSSFSheet sheet = xssfWorkbook.createSheet(sheetName); //标题行 XSSFRow titlerRow = sheet.createRow(0); //循环标题 int t=0; for(List<String> ls : titles){ titlerRow.createCell(t).setCellValue(ls.get(0)); t++; } //循环行 int row = 1; for(List<String> ls : sheetData){ XSSFRow dataRow = sheet.createRow(row); //循环列 for(int col=0;col<ls.size();col++){ dataRow.createCell(col).setCellValue(ls.get(col)); if(col==0){ File tempFile =new File(ls.get(col)); String fileName = tempFile.getName(); XSSFCell cell = dataRow.getCell(0); cell.setCellFormula("HYPERLINK("./"+fileName+"",""+fileName+"")"); cell.setCellStyle(hlink_style); } } row++; } } xssfWorkbook.write(out); xssfWorkbook.close(); }
调用:
//excel生成路径 String path = "D:\exportTest\" + System.currentTimeMillis() + ".xlsx"; File xlsFile = new File(path); //文件夹不存在就创建 if (!xlsFile.getParentFile().exists() && !xlsFile.getParentFile().isDirectory()) { xlsFile.getParentFile().mkdir(); } //生成excel EasyExcel.POIExcel(AllDataList,path);
其中,参数AllDataList的传入格式为List<Map<String,Object>>:
格式较复杂,List中每条数据就是一个sheet页内容,主要是sheet页名称(String)、sheet页表头(List<List<String>>)、sheet页数据(List<List<String>>)
记录一下,以后用到的话可根据需要的格式酌情修改。