一、导出Excel
添加maven依赖
<dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>3.10-FINAL</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml-schemas</artifactId><version>3.10-FINAL</version></dependency>
exportExcel（）这个方法有两个参数，第一个是导出文件的保存全路径，比如/Users/admin/Desktop/result.xlsx，第二个是从sql查询出来的结果集
public void exportExcel(String excelFileName,List<DataBean> result) {try {String sheetName = "统计报表";// 工作表名XSSFWorkbook wb = new XSSFWorkbook();XSSFSheet sheet = wb.createSheet(sheetName);// 生成一个样式XSSFCellStyle style = wb.createCellStyle();//样式字体居中style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
// style.setWrapText(true);//自动换行XSSFRow first = sheet.createRow(0);XSSFCell headCell = first.createCell((short) 0);headCell.setCellValue("序号");headCell.setCellStyle(style);headCell = first.createCell( (short) 1);headCell.setCellValue("姓名");headCell.setCellStyle(style);headCell = first.createCell((short) 2);headCell.setCellValue("年龄");headCell.setCellStyle(style);headCell = first.createCell((short) 3);headCell.setCellValue("性别");headCell.setCellStyle(style);headCell = first.createCell(4);headCell.setCellValue("参加次数");headCell.setCellStyle(style);headCell = first.createCell((short) 5);headCell.setCellValue("pb");headCell.setCellStyle(style);// 循环写入每条收入记录的主码和盈利额for (int r = 1; r < result.size()+1; r++) {XSSFRow row = sheet.createRow(r);XSSFCell contentCell = row.c
