easyExcel复杂表头的设置与样式的设置(非注解)
easyExcel复杂表头的设置与样式的设置(非注解)
表头样式一
引入jar包
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>easyexcel</artifactId>
<version>2.2.6</version>
<scope>compile</scope>
</dependency>
excel的样式设置
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.write.metadata.style.WriteCellStyle;
import com.alibaba.excel.write.metadata.style.WriteFont;
import com.alibaba.excel.write.style.HorizontalCellStyleStrategy;
import org.apache.poi.ss.usermodel.*;
import java.util.ArrayList;
import java.util.List;
public class HeadContentCellStyle {
/**
* 设置表头 和内容样式
* @return
*/
public static HorizontalCellStyleStrategy myHorizontalCellStyleStrategy(){
//1 表头样式策略
WriteCellStyle headWriteCellStyle = new WriteCellStyle();
//设置表头居中对齐
headWriteCellStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);
//表头前景设置白色
headWriteCellStyle.setFillForegroundColor(IndexedColors.WHITE1.getIndex());
WriteFont headWriteFont = new WriteFont();
headWriteFont.setBold(true);
headWriteFont.setFontName("宋体");
headWriteFont.setFontHeightInPoints((short)11);
headWriteCellStyle.setWriteFont(headWriteFont);
//内容样式 多个样式则隔行换色
List<WriteCellStyle> listCntWritCellSty = new ArrayList<>();
//2 内容样式策略 样式一
WriteCellStyle contentWriteCellStyle = new WriteCellStyle();
WriteFont contentWriteFont = new WriteFont();
//内容字体大小
contentWriteFont.setFontName("宋体");
contentWriteFont.setFontHeightInPoints((short)11);
contentWriteCellStyle.setWriteFont(contentWriteFont);
//背景设置白色（这里一定要设置表格内容的背景色WPS下载下来的文件没有问题，但是office下载下来的文件表格内容会变成黑色）
contentWriteCellStyle.setFillForegroundColor(IndexedColors.WHITE1.getIndex());
//设置自动换行
contentWriteCellStyle.setWrapped(true);
//设置垂直居中
contentWriteCellStyle.setVerticalAlignment(VerticalAlignment.CENTER);
// 头默认了 FillPatternType所以可以不指定。
contentWriteCellStyle.setFillPatternType(FillPatternType.SOLID_FOREGROUND);
//设置背景黄色
// contentWriteCellStyle.setFillForegroundColor(IndexedColors.YELLOW.getIndex());
//设置水平靠左
//contentWriteCellStyle.setHorizontalAlignment(HorizontalAlignment.LEFT);
//设置边框样式
setBorderStyle(contentWriteCellStyle);
//内容风格可以定义多个。
listCntWritCellSty.add(contentWriteCellStyle);
//2 内容样式策略 样式二
WriteCellStyle contentWriteCellStyle2 = new WriteCellStyle();
// 这里需要指定 FillPatternType 为FillPatternType.SOLID_FOREGROUND 不然无法显示背景颜色。
// 头默认了 FillPatternType所以可以不指定。
contentWriteCellStyle2.setFillPatternType(FillPatternType.SOLID_FOREGROUND);
//背景设置白色
contentWriteCellStyle2.setFillForegroundColor(IndexedColors.WHITE1.getIndex());
// 背景绿色
// contentWriteCellStyle2.setFillForegroundColor(IndexedColors.GREEN.getIndex());
//设置垂直居中
contentWriteCellStyle2.setVerticalAlignment(VerticalAlignment.CENTER);
//设置边框样式
setBorderStyle(contentWriteCellStyle2);
listCntWritCellSty.add(contentWriteCellStyle2);
// 水平单元格风格综合策略(表头 + 内容)
// return new HorizontalCellStyleStrategy(headWriteCellStyle, contentWriteCellStyle);
return new HorizontalCellStyleStrategy(headWriteCellStyle, listCntWritCellSty);
}
/**
* 设置边框样式
* @param contentWriteCellStyle
*/
private static void setBorderStyle(WriteCellStyle contentWriteCellStyle){
//设置边框样式
contentWriteCellStyle.setBorderLeft(BorderStyle.THIN);
// contentWriteCellStyle.setBottomBorderColor(IndexedColors.BLUE.getIndex()); //颜色
contentWriteCellStyle.setBorderTop(BorderStyle.THIN);
contentWriteCellStyle.setBorderRight(BorderStyle.THIN);
contentWriteCellStyle.setBorderBottom(BorderStyle.THIN);
}
}
文件流的输出
/**
*
*
* @Param 复杂表头文件导出
* @return
*/
public void downloadFile(HttpServletResponse response, List<?> list, String fileNames, String sheetName,List<List<String>> titleList) throws IOException {
if (CollectionUtils.isEmpty(list)) {
throw new BusinessException(3698,"当前参考单位无数据");
}
if (StringUtils.isEmpty(fileNames)) {
fileNames = new Date().toString();
}
if (StringUtils.isEmpty(sheetName)) {
sheetName = "Sheet1";
}
// 这里注意 有同学反应使用swagger 会导致各种问题，请直接用浏览器或者用postman
try {
response.setContentType("application/vnd.ms-excel");
response.setCharacterEncoding("utf-8");
// 这里URLEncoder.encode可以防止中文乱码 当然和easyexcel没有关系
String fileName = URLEncoder.encode(fileNames, "UTF-8").replaceAll("\\+", "%20");
response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");
// 这里需要设置不关闭流
// EasyExcel.write(response.getOutputStream(), list.get(0).getClass()).autoCloseStream(Boolean.FALSE).sheet(sheetName)
// .doWrite(list);
EasyExcel.write(response.getOutputStream())
.head(roateHeadFields(titleList))
.registerWriteHandler(HeadContentCellStyle.myHorizontalCellStyleStrategy())
.registerWriteHandler(new SimpleColumnWidthStyleStrategy(15)) // 简单的列宽策略，列宽15
.registerWriteHandler(new SimpleRowHeightStyleStrategy((short)25,(short)15)) // 简单的行高策略：头行高30，内容行高15
.sheet("sheet").doWrite(list);
} catch (Exception e) {
log.error("导出失败------------"+e.getMessage());
// 重置response
response.reset();
response.setContentType("application/json");
response.setCharacterEncoding("utf-8");
Map<String, String> map = new HashMap<String, String>();
map.put("status", "failure");
map.put("message", "下载文件失败" + e.getMessage());
response.getWriter().println(JSON.toJSONString(map));
}
}
/**
* 表头设置
* @param headFields
* @return
*/
private List<List<String>> roateHeadFields(List<List<String>> headFields) {
List<List<String>> result = new ArrayList<>();
for (List<String> row : headFields) {
for (int j = 0; j < row.size(); j++) {
if (result.size() > j) {
// 往对应第j个List 添加添加值
result.get(j).add(row.get(j));
} else {
// 分割成单个List设置文件头和数据导入
/**
* @description 全市单科成绩统计表
*
**/
public void downloadCitySingleScore(HttpServletResponse response, String examId) throws IOException {
//获取文件名称
String fileNames = getFileNames(examId,"全市单科成绩统计表");
//获取单科成绩数据
List<CitySingleScore> scoreList = getCitySingleScores(examId);
//建立表头
List<List<String>> titleList = new ArrayList<>();
List<String> titleOne = Lists.newArrayList(fileNames,"","","");
List<String> titleTwo = Lists.newArrayList("科目","平均分","最高分","最高分人数");
titleList.add(easyExcelUtil.makeUpTitle(titleOne));
titleList.add(easyExcelUtil.makeUpTitle(titleTwo));
easyExcelUtil.downloadFile(response,scoreList,fileNames,null,titleList);
}
表头样式二
jar包和excel的样式设置不变 ，表头数据需要自己组装
/**
* 创建表头
* @return
*/
public List<List<String>> head(String examId) {
List<List<String>> list = new ArrayList<List<String>>();
//表头数据
String basicInfo=examUitl.getFileNames(examId,"全市赋分等级区间表");
String a="等级",b="比例",c="赋分区间",d="原始分分布区间";
//第一列，1/2/3行
list.add( Lists.newArrayList(basicInfo,a,a ));
//第二列，1/2/3行
list.add( Lists.newArrayList(basicInfo,b,b));
//第三列
list.add( Lists.newArrayList(basicInfo,c,c));
//动态根据月份生成
List<String> orderSpeaces = Lists.newArrayList("政治","地理","化学","生物");
orderSpeaces.forEach(title->{
list.add( Lists.newArrayList(basicInfo,d ,title) );
});
return list;
}
数据导入
/**
* @description 全市赋分等级区间表
*
* @params [response, examId]
* @return void
* @author xiaoyinchuan
* @date 2020/11/24 0024 15:08
**/
public void downloadGraduation(HttpServletResponse response, String examId) throws IOException {
List<NaturalGradeVO> list = highScoresNewService.selectNaturalGrade(examId);
//生成数据
List<Graduation> resultList = JSON.parseArray(JSON.toJSONString(list), Graduation.class);
List<List<String>> head = head(examId);
easyExcelUtil.downloadFileNext(response,resultList,examUitl.getFileNames(examId,"全市赋分等级区间表"),null,head);
}
导入util
/**
*
* 和方式一导入的差异是.head(titleList) ，表头直接放入
* @Param 复杂表头文件导出
* @return
*/
public void downloadFileNext(HttpServletResponse response, List<?> list, String fileNames, String sheetName,List<List<String>> titleList) throws IOException {
if (CollectionUtils.isEmpty(list)) {
throw new BusinessException(3698,"当前参考单位无数据");
}
if (StringUtils.isEmpty(fileNames)) {
fileNames = new Date().toString();
}
if (StringUtils.isEmpty(sheetName)) {
sheetName = "Sheet1";
}
// 这里注意 有同学反应使用swagger 会导致各种问题，请直接用浏览器或者用postman
try {
response.setContentType("application/vnd.ms-excel");
response.setCharacterEncoding("utf-8");
// 这里URLEncoder.encode可以防止中文乱码 当然和easyexcel没有关系
String fileName = URLEncoder.encode(fileNames, "UTF-8").replaceAll("\\+", "%20");
response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");
// 这里需要设置不关闭流
// EasyExcel.write(response.getOutputStream(), list.get(0).getClass()).autoCloseStream(Boolean.FALSE).sheet(sheetName)
// .doWrite(list);
EasyExcel.write(response.getOutputStream())
.head(titleList)
.registerWriteHandler(HeadContentCellStyle.myHorizontalCellStyleStrategy())
.registerWriteHandler(new SimpleColumnWidthStyleStrategy(15)) // 简单的列宽策略，列宽15
.registerWriteHandler(new SimpleRowHeightStyleStrategy((short)25,(short)15)) // 简单的行高策略：头行高25，内容行高15
.sheet("sheet").doWrite(list);
} catch (Exception e) {
log.error("导出失败------------"+e.getMessage());
// 重置response
response.reset();
response.setContentType("application/json");
response.setCharacterEncoding("utf-8");
Map<String, String> map = new HashMap<String, String>();
map.put("status", "failure");
map.put("message", "下载文件失败" + e.getMessage());
response.getWriter().println(JSON.toJSONString(map));
}
}
参考文章：https://blog.csdn.net/qq_35461948/article/details/116658131
参考文章：https://blog.csdn.net/jie873440996/article/details/106399471