这篇文章主要为大家详细介绍了SpringBoot集成POI导出Execl表格之统一工具类，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
最近项目需求中有需要导出Execl表格的要求，而且还是大量的数据，于是把之前的整理了一下，抽成了一个统一的工具类，需要时直接调用工具类即可，代码如下：
一、 先看下效果
二、 导入依赖
4.1.2 3.2.0 org.apache.poi poi ${poi.version} org.apache.poi poi-ooxml ${poi.version} org.apache.poi poi-ooxml-schemas ${poi.version}
三、统一工具类
集成了xlsx和xls两种方式导出;
import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.usermodel.HSSFFont; import org.apache.poi.hssf.usermodel.HSSFPalette; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.*; import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.xssf.streaming.SXSSFWorkbook; import org.apache.poi.xssf.usermodel.XSSFFont; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Component; import javax.servlet.http.HttpServletResponse; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.lang.reflect.Method; import java.net.URLEncoder; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.Date; import java.util.List; /** * Exexl导出工具类 */ public class ExcelExportUtil { private static final Logger logger = LoggerFactory.getLogger(ExcelExportUtil.class); //响应 HttpServletResponse response; // 文件名 private String fileName; //文件保存路径 private String fileDir; //sheet名 private String sheetName; //表头字体 private String titleFontType = "Arial Unicode MS"; //表头背景色 private String titleBackColor = "C1FBEE"; //表头字号 private short titleFontSize = 12; //添加自动筛选的列 如 A:M private String address = ""; //正文字体 private String contentFontType = "Arial Unicode MS"; //正文字号 private short contentFontSize = 12; //Float类型数据小数位 private String floatDecimal = "0.00"; //Double类型数据小数位 private String doubleDecimal = "0.00"; //时间类型 private String parsePattern = "yyyy-MM-dd HH:mm:ss"; //设置列的公式 private String colFormula[] = null; SimpleDateFormat dateFormat = new SimpleDateFormat(parsePattern); DecimalFormat floatDecimalFormat = new DecimalFormat(floatDecimal); DecimalFormat doubleDecimalFormat = new DecimalFormat(doubleDecimal); private HSSFWorkbook workbook = null; public ExcelExportUtil() { workbook = new HSSFWorkbook(); } public ExcelExportUtil(HttpServletResponse response, String fileName, String sheetName) { this.fileName = fileName; this.response = response; this.sheetName = sheetName; workbook = new HSSFWorkbook(); } /** * 设置表头字体. * @param titleFontType */ public void setTitleFontType(String titleFontType) { this.titleFontType = titleFontType; } /** * 设置表头背景色. * @param titleBackColor 十六进制 */ public void setTitleBackColor(String titleBackColor) { this.titleBackColor = titleBackColor; } /** * 设置表头字体大小. * @param titleFontSize */ public void setTitleFontSize(short titleFontSize) { this.titleFontSize = titleFontSize; } /** * 设置表头自动筛选栏位,如A:AC. * @param address */ public void setAddress(String address) { this.address = address; } /** * 设置正文字体. * @param contentFontType */ public void setContentFontType(String contentFontType) { this.contentFontType = contentFontType; } /** * 设置正文字号. * @param contentFontSize */ public void setContentFontSize(short contentFontSize) { this.contentFontSize = contentFontSize; } /** * 设置float类型数据小数位 默认.00 * @param doubleDecimal 如 ".00" */ public void setDoubleDecimal(String doubleDecimal) { this.doubleDecimal = doubleDecimal; } /** * 设置doubel类型数据小数位 默认.00 * @param floatDecimalFormat 如 ".00 */ public void setFloatDecimalFormat(DecimalFormat floatDecimalFormat) { this.floatDecimalFormat = floatDecimalFormat; } /** * 设置列的公式 * @param colFormula 存储i-1列的公式 涉及到的行号使用@替换 如A@+B@ */ public void setColFormula(String[] colFormula) { this.colFormula = colFormula; } /** * 将16进制的颜色代码写入样式中来设置颜色 * * @param style 保证style统一 * @param color 颜色：66FFDD * @param index 索引 8-64 使用时不可重复 * @return */ public CellStyle setColor(CellStyle style, String color, short index) { if ("".equals(color)) { //转为RGB码 int r = Integer.parseInt((color.substring(0, 2)), 16); //转为16进制 int g = Integer.parseInt((color.substring(2, 4)), 16); int b = Integer.parseInt((color.substring(4, 6)), 16); //自定义cell颜色 HSSFPalette palette = workbook.getCustomPalette(); palette.setColorAtIndex((short) index, (byte) r, (byte) g, (byte) b); style.setFillPattern(FillPatternType.SOLID_FOREGROUND); style.setFillForegroundColor(index); } return style; } /** * 设置字体并加外边框 * * @param style 样式 * @param style 字体名 * @param style 大小 * @return */ public CellStyle setFontAndBorder(CellStyle style, String fontName, short size) { HSSFFont font = workbook.createFont(); font.setFontHeightInPoints(size); font.setFontName(fontName); font.setBold(true); style.setFont(font); style.setBorderBottom(BorderStyle.THIN); //下边框 style.setBorderLeft(BorderStyle.THIN);//左边框 style.setBorderTop(BorderStyle.THIN);//上边框 style.setBorderRight(BorderStyle.THIN);//右边框 return style; } /** * SXSSFWorkbook 设置表头字体加粗 和 大小 */ public CellStyle setTitleNameFont(SXSSFWorkbook workbook, CellStyle style, String fontName, short size){ XSSFFont font = (XSSFFont) workbook.createFont(); font.setFontHeightInPoints(size); font.setFontName(fontName); font.setBold(true); style.setFont(font); return style; } /** * xlsx方式(适合导出大量数据，拆分多个sheet) * @param response 响应流 * @param fileName 文件名称 * @param titleColumn 标题列名称对象（如：name） * @param titleName 标题列名称对象描述（如：名字） * @param titleSize 标题大小 * @param dataList 数据源 */ public void writeBigExcel(HttpServletResponse response, String fileName, String titleColumn[], String titleName[], int titleSize[], List dataList) { try { SXSSFWorkbook workbook = new SXSSFWorkbook(100); OutputStream out = response.getOutputStream(); String lastFileName = fileName + ".xlsx"; response.setContentType("application/msexcel;charset=UTF-8"); response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode(lastFileName, "UTF-8")); int k = 0; int rowIndex; Sheet sheet = workbook.createSheet(fileName + (k + 1)); //写入excel的表头 Row titleNameRow = workbook.getSheet(fileName + (k + 1)).createRow(0); //设置样式 CellStyle titleStyle = workbook.createCellStyle(); titleStyle = setTitleNameFont(workbook, titleStyle, "Arial Unicode MS", (short) 12); for (int i = 0; i < titleName.length; i++) { sheet.setColumnWidth(i, titleSize[i] * 256); //设置宽度 Cell cell = titleNameRow.createCell(i); cell.setCellStyle(titleStyle); cell.setCellValue(titleName[i]); } //写入到excel中 if (dataList != null && dataList.size() > 0) { if (titleColumn.length > 0) { for (int index = 0; index < dataList.size(); index++) { //每个sheet3W条数据 if (index != 0 && (index) % 30000 == 0) { k = k + 1; sheet = workbook.createSheet(fileName + (k + 1)); //写入excel的表头 titleNameRow = workbook.getSheet(fileName + (k + 1)).createRow(0); for (int i = 0; i < titleName.length; i++) { sheet.setColumnWidth(i, titleSize[i] * 256); //设置宽度 Cell cell = titleNameRow.createCell(i); cell.setCellStyle(titleStyle); cell.setCellValue(titleName[i]); } } if (index < 30000) { rowIndex = index + 1; } else { rowIndex = index - 30000 * ((index) / 30000) + 1; } Object obj = dataList.get(index); Class clazz = obj.getClass(); Row dataRow = workbook.getSheet(fileName + (k + 1)).createRow(rowIndex); for (int columnIndex = 0; columnIndex < titleColumn.length; columnIndex++) { String title = titleColumn[columnIndex].trim(); if (!"".equals(title)) { // 获取返回类型 String UTitle = Character.toUpperCase(title.charAt(0)) + title.substring(1, title.length()); // 使其首字母大写; String methodName = "get" + UTitle; Method method = clazz.getDeclaredMethod(methodName); String returnType = method.getReturnType().getName(); Object object = method.invoke(obj); String data = method.invoke(obj) == null ? "" : object.toString(); Cell cell = dataRow.createCell(columnIndex); if (data != null && !"".equals(data)) { if ("int".equals(returnType)) { cell.setCellValue(Integer.parseInt(data)); } else if ("long".equals(returnType)) { cell.setCellValue(Long.parseLong(data)); } else if ("float".equals(returnType)) { cell.setCellValue(floatDecimalFormat.format(Float.parseFloat(data))); } else if ("double".equals(returnType)) { cell.setCellValue(doubleDecimalFormat.format(Double.parseDouble(data))); } else if (Date.class.getName().equals(returnType)) { cell.setCellValue(dateFormat.format(object)); } else { cell.setCellValue(data); } } else { //字段为空 检查该列是否是公式 if (colFormula != null) { String sixBuf = colFormula[columnIndex].replace("@", (rowIndex + 1) + ""); cell = dataRow.createCell(columnIndex); cell.setCellFormula(sixBuf); } } } } } }else{ //titleColumn为空 titleName为单列的情况 for (int index = 0; index < dataList.size(); index++) { //每个sheet3W条数据 if (index != 0 && (index) % 30000 == 0) { k = k + 1; sheet = workbook.createSheet(fileName + (k + 1)); //写入excel的表头 titleNameRow = workbook.getSheet(fileName + (k + 1)).createRow(0); for (int i = 0; i < titleName.length; i++) { sheet.setColumnWidth(i, titleSize[i] * 256); //设置宽度 Cell cell = titleNameRow.createCell(i); cell.setCellStyle(titleStyle); cell.setCellValue(titleName[i]); } } if (index < 30000) { rowIndex = index + 1; } else { rowIndex = index - 30000 * ((index) / 30000) + 1; } Object obj = dataList.get(index); Row dataRow = workbook.getSheet(fileName + (k + 1)).createRow(rowIndex); Cell cell = dataRow.createCell(0); cell.setCellValue(obj.toString()); } } } workbook.write(out); out.flush(); out.close(); } catch (Exception e) { e.printStackTrace(); } } /** * 写excel. * xls方式 * @param titleColumn 对应bean的属性名 * @param titleName excel要导出的列名 * @param titleSize 列宽 * @param dataList 数据 */ public void writeExcel(String titleColumn[], String titleName[], int titleSize[], List dataList) { //添加Worksheet（不添加sheet时生成的xls文件打开时会报错) Sheet sheet = workbook.createSheet(this.sheetName); //新建文件 OutputStream out = null; try { if (fileDir != null) { //有文件路径 out = new FileOutputStream(fileDir); } else { //否则，直接写到输出流中 out = response.getOutputStream(); fileName = fileName + ".xls"; response.setContentType("application/msexcel;charset=UTF-8"); response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode(fileName, "UTF-8")); } //写入excel的表头 Row titleNameRow = workbook.getSheet(sheetName).createRow(0); //设置样式 CellStyle titleStyle = workbook.createCellStyle(); titleStyle = (HSSFCellStyle) setFontAndBorder(titleStyle, titleFontType, (short) titleFontSize); titleStyle = (HSSFCellStyle) setColor(titleStyle, titleBackColor, (short) 10); for (int i = 0; i 0) { //设置样式 HSSFCellStyle dataStyle = workbook.createCellStyle(); titleStyle = (HSSFCellStyle) setFontAndBorder(titleStyle, contentFontType, (short) contentFontSize); if (titleColumn.length > 0) { for (int rowIndex = 1; rowIndex <= dataList.size(); rowIndex++) { Object obj = dataList.get(rowIndex - 1); //获得该对象 Class clsss = obj.getClass(); //获得该对对象的class实例 Row dataRow = workbook.getSheet(sheetName).createRow(rowIndex); for (int columnIndex = 0; columnIndex 四、调用
此处我没写成static静态方法调用
@RequestMapping("/export") public void export(HttpServletResponse response) { List以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持0133技术站。
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