excel工具类，适合单sheet或多sheet的excel表格导出
package Util;
import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.*;
import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.*; import java.util.LinkedHashMap; import java.util.List;
/** * Excel文件工具类 * * @author : Mr.S * @Version : 1.01 */ @SuppressWarnings("ALL") public class ExcelUtil { /** * 创建excel文档， * * @param list 数据 * @param keys list中map的key数组集合 * @param columnNames excel的列名 */ public static Workbook createWorkBook(List<LinkedHashMap<String, Object>> list, String sheetName, String[] keys, String columnNames[]) { // 创建excel工作簿 Workbook wb = new HSSFWorkbook(); // 创建第一个sheet（页），并命名 Sheet sheet = wb.createSheet(sheetName); // 手动设置列宽。第一个参数表示要为第几列设；，第二个参数表示列的宽度，n为列高的像素数。 for (int i = 0; i < keys.length; i++) { sheet.setColumnWidth((short) i, (short) (35.7 * 150)); }
// 创建两种单元格格式
CellStyle columnStyle = wb.createCellStyle();
CellStyle valueStyle = wb.createCellStyle();
// 创建两种字体
Font columnFont = wb.createFont();
Font valueFont = wb.createFont();
setFontParameters(columnFont,true);//加粗
setFontParameters(valueFont, false);
setCellStyle(columnStyle, columnFont);
setCellStyle(columnStyle, valueFont);
setColumnName(sheet,columnNames,columnStyle);
setColumnValue(sheet,list,keys,valueStyle);
return wb;
}
// 创建字体样式
public static void setFontParameters(Font font,boolean isBold){
font.setFontHeightInPoints((short) 10);
font.setColor(IndexedColors.BLACK.getIndex());
if(isBold) {
font.setBoldweight(Font.BOLDWEIGHT\_BOLD);
}
}
// 设置元格的样式
public static void setCellStyle(CellStyle cellStyle,Font font){
cellStyle.setFont(font);
cellStyle.setBorderLeft(CellStyle.BORDER\_THIN);
cellStyle.setBorderRight(CellStyle.BORDER\_THIN);
cellStyle.setBorderTop(CellStyle.BORDER\_THIN);
cellStyle.setBorderBottom(CellStyle.BORDER\_THIN);
cellStyle.setAlignment(CellStyle.ALIGN\_CENTER);
}
public static void setColumnName(Sheet sheet,String columnNames\[\],CellStyle cellStyle){
// 创建第一行
Row row = sheet.createRow((short) 0);
for (int i = 0; i < columnNames.length; i++) {
Cell cell = row.createCell(i);
cell.setCellValue(columnNames\[i\]);
cell.setCellStyle(cellStyle);
}
}
private static void setColumnValue(Sheet sheet, List<LinkedHashMap<String, Object>> list, String\[\] keys, CellStyle valueStyle) {
for (int i = 0; i < list.size(); i++) {
// Row 行,Cell 方格 , Row 和 Cell 都是从0开始计数的
// 创建一行，在页sheet上
Row row1 = sheet.createRow(i + 1);
// 在row行上创建一个方格
for (int j = 0; j < keys.length; j++) {
Cell cell = row1.createCell(j);
cell.setCellValue(list.get(i).get(keys\[j\]) == null ? " " : list.get(i).get(keys\[j\]).toString());
cell.setCellStyle(valueStyle);
}
}
}
/\*\*
\* 创建包含多个Sheet的excel表格
\*
\* @param list
\* @param fileName
\* @param sheetName
\* @param keys
\* @param columnNames
\* @return
\*/
public static Workbook createWorkBookForMoreSheet(List<List<LinkedHashMap<String, Object>>> list, String fileName, String sheetName\[\], List<String\[\]> keys, List<String\[\]> columnNames) {
// 创建excel工作簿
Workbook wb = new HSSFWorkbook();
for (int n = 0; n < list.size(); n++) {
// 创建第一个sheet（页），并命名
Sheet sheet = wb.createSheet(sheetName\[n\]);
// 手动设置列宽。第一个参数表示要为第几列设；，第二个参数表示列的宽度，n为列高的像素数。
for (int i = 0; i < keys.get(n).length; i++) {
sheet.setColumnWidth((short) i, (short) (35.7 \* 150));
}
// 创建第一行
Row row = sheet.createRow((short) 0);
// 创建两种单元格格式
CellStyle columnStyle = wb.createCellStyle();
CellStyle valueStyle = wb.createCellStyle();
// 创建两种字体
Font columnFont = wb.createFont();
Font valueFont = wb.createFont();
setFontParameters(columnFont,true);
setFontParameters(valueFont, false);
setCellStyle(columnStyle, columnFont);
setCellStyle(columnStyle, valueFont);
setColumnNameForSheets(n, sheet, columnNames, columnStyle);
setColumnValueForSheets(n,sheet,list,keys,valueStyle);
}
return wb;
}
private static void setColumnValueForSheets(int n, Sheet sheet, List<List<LinkedHashMap<String, Object>>> list, List<String\[\]> keys, CellStyle valueStyle) {
for (int i = 0; i < list.get(n).size(); i++) {
// Row 行,Cell 方格 , Row 和 Cell 都是从0开始计数的
// 创建一行，在页sheet上
Row row1 = sheet.createRow(i + 1);
// 在row行上创建一个方格
for (int j = 0; j < keys.get(n).length; j++) {
Cell cell = row1.createCell(j);
cell.setCellValue(list.get(n).get(i).get(keys.get(n)\[j\]) == null ? " " : list.get(n).get(i).get(keys.get(n)\[j\]).toString());
cell.setCellStyle(valueStyle);
}
}
}
public static void setColumnNameForSheets(int n,Sheet sheet, List<String\[\]> columnNames,CellStyle cellStyle){
// 创建第一行
Row row = sheet.createRow((short) 0);
for (int i = 0; i < columnNames.get(n).length; i++) {
Cell cell = row.createCell(i);
cell.setCellValue(columnNames.get(n)\[i\]);
cell.setCellStyle(cellStyle);
}
}
/\*\*
\* @param data 数据列表
\* @param fileName 文件名
\* @param keys 数据列表中map的key
\* @param columnNames 列名
\* @param request
\* @param response
\* @throws IOException
\*/
public static void downExcel(List<LinkedHashMap<String, Object>> data, String fileName,
String\[\] keys, String columnNames\[\],
HttpServletRequest request, HttpServletResponse response) throws IOException {
ByteArrayOutputStream os = new ByteArrayOutputStream();
try {
createWorkBook(data, fileName, keys, columnNames).write(os);
} catch (IOException e) {
e.printStackTrace();
}
// 设置response参数，可以打开下载页面
setResponseParameters(response,fileName);
ServletOutputStream out = response.getOutputStream();
BufferedInputStream bis = null;
BufferedOutputStream bos = null;
writeWorkBook(os,bis,bos,out);
}
/\*\*
\* 导出包含多个sheet的excel表格
\*
\* @param data
\* @param fileName
\* @param sheetName
\* @param keys
\* @param columnNames
\* @param response
\* @throws IOException
\*/
public static void downExcelMoreSheet(List data, String fileName, String sheetName\[\],
List keys, List columnNames, HttpServletResponse response) throws IOException {
ByteArrayOutputStream os = new ByteArrayOutputStream();
try {
ExcelUtil.createWorkBookForMoreSheet(data, fileName, sheetName, keys, columnNames).write(os);
} catch (IOException e) {
e.printStackTrace();
}
// 设置response参数，可以打开下载页面
setResponseParameters(response,fileName);
ServletOutputStream out = response.getOutputStream();
BufferedInputStream bis = null;
BufferedOutputStream bos = null;
writeWorkBook(os,bis,bos,out);
}
private static void writeWorkBook(ByteArrayOutputStream os,BufferedInputStream bis, BufferedOutputStream bos,ServletOutputStream out) throws IOException {
try {
byte\[\] content = os.toByteArray();
InputStream is = new ByteArrayInputStream(content);
bis = new BufferedInputStream(is);
bos = new BufferedOutputStream(out);
byte\[\] buff = new byte\[2048\];
int bytesRead;
// Simple read/write loop.
while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
bos.write(buff, 0, bytesRead);
}
} catch (final IOException e) {
throw e;
} finally {
if (bis != null)
bis.close();
if (bos != null)
bos.close();
}
}
private static void setResponseParameters(HttpServletResponse response, String fileName) throws UnsupportedEncodingException {
response.reset();
response.setContentType("application/vnd.ms-excel;charset=utf-8");
response.setHeader("Content-Disposition", "attachment;filename=" + new String((fileName + ".xls").getBytes(), "iso-8859-1"));
}
}
使用示例：
单个sheet data = (List<LinkedHashMap<String, Object>>) xxxxxxService.getDataByLast5Years(SITE_ID); String fileName = "地域分布分析"; String columnNames[] = {"站点名称", "日期", "地区", "独立访客(UV)", "浏览次数(PV)", "IP数", "平均访问时长", "平均访问深度","跳出率%"};//列名 String keys[] = {"name", "date", "region", "uniqueVisitor", "pv", "ip", "averageVisitTime", "averageVisitDepth","bounceRate"};//map中的key ExcelUtil.downExcel(data, fileName, keys, columnNames, request, response); // 执行excel下载
多个sheet String fileName = "网站概况"; String sheetName[] = {"网站概况", "搜索引擎", "来路域名", "地域分布分析"};
siteData = (List<LinkedHashMap<String, Object>>) countSiteAnalyzeService.getDataByLastYear(String.valueOf(SITE_ID)); searchEngineData = (List<LinkedHashMap<String, Object>>) countSearchEngineService.getDataByLastYear(SITE_ID); llDomainData = (List<LinkedHashMap<String, Object>>) countSourceDomainService.getDataByLastYear(SITE_ID); regionData = (List<LinkedHashMap<String, Object>>) countRegionAnalyzeService.getDataByLastYear(SITE_ID);
List data = new ArrayList(); data.add(siteData); data.add(searchEngineData); data.add(llDomainData); data.add(regionData);
List columnName = new ArrayList(); String siteColumnNames[] = {"站点", "日期", "IP", "独立访客(UV)", "浏览次数(PV)", "新访客数", "访问次数", "平均访问时长", "平均访问深度", "平均浏览页数"};//列名 String searchEngColumnNames[] = {"站点", "搜索引擎名称", "网址", "日期", "IP", "独立访客(UV)", "浏览次数(PV)", "新独立访客", "访问次数"};//列名 String domainColumnNames[] = {"站点", "类型", "日期", "IP", "独立访客(UV)", "浏览次数(PV)", "新访客数", "访问次数"};//列名 String regionColumnNames[] = {"站点", "日期", "地域", "IP", "独立访客(UV)", "浏览次数(PV)", "访问次数", "平均访问时长", "平均访问深度","跳出率%"};//列名 columnName.add(siteColumnNames); columnName.add(searchEngColumnNames); columnName.add(domainColumnNames); columnName.add(regionColumnNames);
List keys = new ArrayList(); String siteKeys[] = {"name", "date", "ip", "uniqueVisitor", "pv", "newVisitor", "visitCount", "averageVisitTime", "averageVisitDepth", "averageVisitPages"};//map中的key String searchEngKeys[] = {"name", "searchEngineName", "url", "date", "ip", "uniqueVisitor", "pv", "newVisitor", "visitCount"};//map中的key String domainKeys[] = {"name", "sourceType", "date", "ip", "uniqueVisitor", "pv", "newVisitor", "visitCount"};//map中的key String regionKeys[] = {"name", "date", "region", "ip", "uniqueVisitor", "pv", "visitCount", "averageVisitTime", "averageVisitDepth","bounceRate"};//map中的key keys.add(siteKeys); keys.add(searchEngKeys); keys.add(domainKeys); keys.add(regionKeys);
ExcelUtil.downExcelMoreSheet(data, fileName, sheetName, keys, columnName, response);
