package com.dsh.guns.modular.system.util;
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import org.apache.poi.hssf.usermodel.*;
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import javax.servlet.http.HttpServletResponse;
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import java.net.URLEncoder;
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public class ExcelUtil {
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public static HSSFWorkbook getHSSFWorkbook(String sheetName, String[] title, String[][] values, HSSFWorkbook wb) {
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// 第一步，创建一个webbook，对应一个Excel文件
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if (wb == null) {
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wb = new HSSFWorkbook();
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}
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// 第二步，在webbook中添加一个sheet,对应Excel文件中的sheet
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HSSFSheet sheet = wb.createSheet(sheetName);
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// 第三步，在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制short
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HSSFRow row = sheet.createRow(0);
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// 第四步，创建单元格，并设置值表头 设置表头居中
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HSSFCellStyle style = wb.createCellStyle();
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// 创建一个居中格式
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style.setAlignment((short) 2);
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HSSFCell cell = null;
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// 创建标题
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for (int i = 0; i < title.length; i++) {
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cell = row.createCell(i);
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cell.setCellType(1);
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cell.setCellValue(title[i]);
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cell.setCellStyle(style);
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}
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if(values!=null){
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// 创建内容
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for (int i = 0; i < values.length; i++) {
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row = sheet.createRow(i + 1);
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for (int j = 0; j < values[i].length; j++) {
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row.createCell(j).setCellValue(values[i][j]);
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}
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}
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}
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return wb;
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}
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public static void setResponseHeader(HttpServletResponse response, String fileName) {
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try {
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response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName));
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response.setContentType("application/vnd.ms-excel;charset=UTF-8");
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response.addHeader("Pragma", "no-cache");
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response.addHeader("Cache-Control", "no-cache");
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} catch (Exception ex) {
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ex.printStackTrace();
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}
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}
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}
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