标签:add pos catch content enc val -o port tom
Excel需要导入的jar包
<!-- 导出excel -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.16</version>
</dependency>
Excel工具类的代码
import org.apache.poi.ss.usermodel.CellStyle; import org.apache.poi.ss.usermodel.Font; import org.apache.poi.xssf.streaming.SXSSFCell; import org.apache.poi.xssf.streaming.SXSSFRow; import org.apache.poi.xssf.streaming.SXSSFSheet; import org.apache.poi.xssf.streaming.SXSSFWorkbook; import java.io.File; import java.io.FileOutputStream; import java.io.OutputStream; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; public class ExcelUtil { public static void datasToExcel(List<String> fieldList, List<Map<String, Object>> dataList, String fileDir, String fileName){ SXSSFWorkbook wbs = new SXSSFWorkbook(2000); CellStyle headStyle = wbs.createCellStyle(); headStyle.setBorderBottom(CellStyle.BORDER_THIN); headStyle.setBorderLeft(CellStyle.BORDER_THIN); headStyle.setBorderRight(CellStyle.BORDER_THIN); headStyle.setBorderTop(CellStyle.BORDER_THIN); headStyle.setAlignment(CellStyle.ALIGN_CENTER); Font font = wbs.createFont(); wbs.createFont().setBoldweight(Font.BOLDWEIGHT_BOLD); headStyle.setFont(font); CellStyle contentStyle = wbs.createCellStyle(); contentStyle.setBorderBottom(CellStyle.BORDER_THIN); contentStyle.setBorderLeft(CellStyle.BORDER_THIN); contentStyle.setBorderRight(CellStyle.BORDER_THIN); contentStyle.setBorderTop(CellStyle.BORDER_THIN); // 设置工作蒲的标签名 SXSSFSheet sheet = wbs.createSheet("firstSheet"); SXSSFRow headRow = sheet.createRow(0); // 设置excel表头字段列 for (int i = 0; i < fieldList.size(); i++) { SXSSFCell headCell = headRow.createCell(i); headCell.setCellStyle(headStyle); headCell.setCellValue(fieldList.get(i)); } // 设置excel内容列 for(int i = 0; i < dataList.size(); i++){ SXSSFRow contentRow = sheet.createRow(i + 1); for (int j = 0; j < fieldList.size(); j++) { SXSSFCell contentCell = contentRow.createCell(j); contentCell.setCellStyle(contentStyle); Object o = dataList.get(i).get(fieldList.get(j)); contentCell.setCellValue(o==null?"":String.valueOf(o)); } } try { String filePath = new StringBuilder(fileDir).append(File.separator).append(fileName).toString(); File file = new File(filePath); OutputStream fileOut = new FileOutputStream(file); wbs.write(fileOut); fileOut.close(); } catch (Exception e) { e.printStackTrace(); }finally { wbs.dispose(); } } // field:字段 public static void main(String[] args) { List<String> fieldList = new ArrayList<>(); fieldList.add("id"); fieldList.add("name"); fieldList.add("age"); List<Map<String, Object>> dataList = new ArrayList<>(); Map<String, Object> map = new HashMap<>(); map.put("id", "1"); map.put("name", "zqd"); map.put("age", 22); Map<String, Object> map2 = new HashMap<>(); map2.put("id", "2"); map2.put("name", "zqd2"); map2.put("age", 23); Map<String, Object> map3 = new HashMap<>(); map3.put("id","3"); map3.put("name","zaq"); map3.put("age",21); dataList.add(map); dataList.add(map2); dataList.add(map3); // 文件的路径 String fileDir = "D:\\git_test\\test"; // 文件名 Excel:excel:2007-2016版用的是:xlsx 拓展名 excel:97-2003版用的是:xls 拓展名 String fileName = "test.xlsx"; datasToExcel(fieldList, dataList, fileDir, fileName); } }
标签:add pos catch content enc val -o port tom
原文地址:https://www.cnblogs.com/zengqinghong/p/11991966.html