java导出功能(多级表头,复杂表头)
多级表头,复杂表头的导出功能都可以仿照这个例子去编写提示以下是本篇文章正文内容,下面案例可供参考
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java导出功能(多级表头,复杂表头)
前言
大概内容:
多级表头,复杂表头的导出功能都可以仿照这个例子去编写
提示:以下是本篇文章正文内容,下面案例可供参考
一、实现的效果
二、调用工具类
业务层调用
//假设这是需要导出的数据
List<MonitorFoldLineTable> data = new ArrayList();
//调用导出工具类
FileExportUtil.testExcelDemo(data,response);
对应的实体类
public class MonitorFoldLineTable {
private String cdbh;
private String sd;
private Double dcsg;
private Double dcdsf;
private Double dcc;
private Double ljsg;
private Double ljdsf;
private Double ljc;;
private Double bxsg;
private Double bxdsf;
private Double bxc;
private String time;
}
三、详细工具类
直接copy改吧改吧就可以使用,有详细注释
import com.iS3.manager.monitoring.domain.vo.MonitorFoldLineTable;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xssf.usermodel.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.List;
/**
* Created with IntelliJ IDEA.
*
* @Author: yangyongzhuo
* @Date: 2021/07/21/8:58
* @Description:
*/
public class FileExportUtil {
/**
* @param list 需要写入excel的数据 从数据库或者其他途径读取
* @Description: 导出监测对比数据的工具类
* @return:
* @Author: yangyongzhuo
* @Date: 2021/7/25 9:29
*/
public static void testExcelDemo(List<MonitorFoldLineTable> list, HttpServletResponse response) {
/** 第一步,创建一个Workbook,对应一个Excel文件 */
XSSFWorkbook wb = new XSSFWorkbook();
/** 第二步,在Workbook中添加一个sheet,对应Excel文件中的sheet */
XSSFSheet sheet = wb.createSheet("excel导出标题");
/** 第三步,设置样式以及字体样式*/
XSSFCellStyle titleStyle = createTitleCellStyle(wb);
XSSFCellStyle headerStyle = createHeadCellStyle(wb);
XSSFCellStyle contentStyle = createContentCellStyle(wb);
/** 第四步,创建标题 ,合并标题单元格 */
// 行号
int rowNum = 0;
// 创建第一页的第一行,索引从0开始
XSSFRow row0 = sheet.createRow(rowNum++);
row0.setHeight((short) 600);// 设置行高
String[] row_Text = {"测点编号", "单次变化量", "", "", "累计变化量", "", "", "变形速率", "", "", "监测时间"};
for (int i = 0; i < row_Text.length; i++) {
XSSFCell c00 = row0.createCell(i);
c00.setCellValue(row_Text[i]);
c00.setCellStyle(headerStyle);
}
// 合并单元格,参数依次为起始列,结束列,起始行,结束行 (索引0开始)
sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, 0));//标题合并单元格操作,4为总列数
sheet.addMergedRegion(new CellRangeAddress(0, 0, 1, 3));//标题合并单元格操作,4为总列数
sheet.addMergedRegion(new CellRangeAddress(0, 0, 4, 6));//标题合并单元格操作,4为总列数
sheet.addMergedRegion(new CellRangeAddress(0, 0, 7, 9));//标题合并单元格操作,4为总列数
sheet.addMergedRegion(new CellRangeAddress(0, 1, 10, 10));//标题合并单元格操作,4为总列数
//第二行
XSSFRow row2 = sheet.createRow(rowNum++);
row2.setHeight((short) 700);
String[] row_third = {"", "施工监测", "第三方监测", "前后差值", "施工监测", "第三方监测", "前后差值", "施工监测", "第三方监测", "前后差值"};
for (int i = 0; i < row_third.length; i++) {
XSSFCell tempCell = row2.createCell(i);
tempCell.setCellValue(row_third[i]);
tempCell.setCellStyle(headerStyle);
}
for (MonitorFoldLineTable value : list) {
XSSFRow tempRow = sheet.createRow(rowNum++);
tempRow.setHeight((short) 500);
// 循环单元格填入数据
for (int j = 0; j < 12; j++) {
//列宽自适应,j为自适应的列,true就是自适应,false就是不自适应,默认不自适应
sheet.autoSizeColumn(j, true);
XSSFCell tempCell = tempRow.createCell(j);
tempCell.setCellStyle(contentStyle);
String tempValue = "";
switch (j) {
case 0:
tempValue = value.getCdbh();
break;
case 1:
tempValue = value.getSd();
break;
case 2:
tempValue = value.getDcsg().toString();
break;
case 3:
tempValue = value.getDcdsf().toString();
break;
case 4:
tempValue = value.getDcc().toString();
break;
case 5:
tempValue = value.getLjsg().toString();
break;
case 6:
tempValue = value.getLjdsf().toString();
break;
case 7:
tempValue = value.getLjc().toString();
break;
case 8:
tempValue = value.getBxsg().toString();
break;
case 9:
tempValue = value.getBxdsf().toString();
break;
case 10:
tempValue = value.getBxc().toString();
break;
case 11:
tempValue = value.getTime();
break;
}
tempCell.setCellValue(tempValue);
}
}
//导出到浏览器下载
buildExcelDocument("监测数据", wb, response);
}
/**
* @Description: [导出到浏览器]
* @Param: [fileName, wb, response]
* @return: void
* @Author: yangyongzhuo
* @Date: 2021/7/25 9:40
*/
private static void buildExcelDocument(String fileName, Workbook wb, HttpServletResponse response) {
try {
response.setContentType("application/octet-stream");
// 可自行定义编码格式
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "utf-8"));
//清除jsp编译html文件的空白,防止excel出现空行
response.flushBuffer();
//写出
wb.write(response.getOutputStream());
} catch (IOException e) {
e.printStackTrace();
} finally {
IOUtils.closeQuietly(wb);
}
}
//---------------------------------------以下是封装的样式-----------------------------
/**
* 创建标题样式
*
* @param wb
* @return
*/
private static XSSFCellStyle createTitleCellStyle(XSSFWorkbook wb) {
XSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setAlignment(HorizontalAlignment.CENTER);//水平居中
cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);//垂直对齐
cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
// cellStyle.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());//背景颜色
XSSFFont headerFont1 = (XSSFFont) wb.createFont(); // 创建字体样式
headerFont1.setBold(true); //字体加粗
headerFont1.setFontName("黑体"); // 设置字体类型
headerFont1.setFontHeightInPoints((short) 15); // 设置字体大小
cellStyle.setFont(headerFont1); // 为标题样式设置字体样式
return cellStyle;
}
/**
* 创建表头样式
*
* @param wb
* @return
*/
private static XSSFCellStyle createHeadCellStyle(XSSFWorkbook wb) {
XSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setWrapText(true);// 设置自动换行
cellStyle.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());//背景颜色
cellStyle.setAlignment(HorizontalAlignment.CENTER); //水平居中
cellStyle.setVerticalAlignment(VerticalAlignment.CENTER); //垂直对齐
cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
// cellStyle.setBottomBorderColor(IndexedColors.BLACK.index);
cellStyle.setBorderBottom(BorderStyle.THIN); //下边框
cellStyle.setBorderLeft(BorderStyle.THIN); //左边框
cellStyle.setBorderRight(BorderStyle.THIN); //右边框
cellStyle.setBorderTop(BorderStyle.THIN); //上边框
XSSFFont headerFont = (XSSFFont) wb.createFont(); // 创建字体样式
headerFont.setBold(true); //字体加粗
headerFont.setFontName("黑体"); // 设置字体类型
headerFont.setFontHeightInPoints((short) 12); // 设置字体大小
cellStyle.setFont(headerFont); // 为标题样式设置字体样式
return cellStyle;
}
/**
* 创建内容样式
*
* @param wb
* @return
*/
private static XSSFCellStyle createContentCellStyle(XSSFWorkbook wb) {
XSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);// 垂直居中
cellStyle.setAlignment(HorizontalAlignment.CENTER);// 水平居中
cellStyle.setWrapText(true);// 设置自动换行
cellStyle.setBorderBottom(BorderStyle.THIN); //下边框
cellStyle.setBorderLeft(BorderStyle.THIN); //左边框
cellStyle.setBorderRight(BorderStyle.THIN); //右边框
cellStyle.setBorderTop(BorderStyle.THIN); //上边框
// 生成12号字体
XSSFFont font = wb.createFont();
font.setColor((short) 8);
font.setFontHeightInPoints((short) 12);
cellStyle.setFont(font);
return cellStyle;
}
}
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