<!--添加导入/出表格依赖-->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.9</version>
</dependency> 

import java.io.Serializable;
import java.util.List;public class ExcelData implements Serializable {private static final long serialVersionUID = 4444017239100620999L;// 表头private List<String> titles;// 数据private List<List<Object>> rows;// 页签名称private String name;public List<String> getTitles() {return titles;}public void setTitles(List<String> titles) {this.titles = titles;}public List<List<Object>> getRows() {return rows;}public void setRows(List<List<Object>> rows) {this.rows = rows;}public String getName() {return name;}public void setName(String name) {this.name = name;}
}

import javax.servlet.http.HttpServletResponse;
import java.awt.*;
import java.io.OutputStream;
import java.util.List;import com.soft.ssmproject.entity.ExcelData;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
import org.apache.poi.xssf.usermodel.XSSFColor;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.xssf.usermodel.extensions.XSSFCellBorder.BorderSide;import java.awt.Color;
import java.net.URLEncoder;public class ExcelUtils {public static void exportExcel(HttpServletResponse response, String fileName, ExcelData data) throws Exception {// 告诉浏览器用什么软件可以打开此文件response.setHeader("content-Type", "application/vnd.ms-excel");// 下载文件的默认名称response.setHeader("Content-Disposition", "attachment;filename="+URLEncoder.encode(fileName, "utf-8"));exportExcel(data, response.getOutputStream());}public static void exportExcel(ExcelData data, OutputStream out) throws Exception {XSSFWorkbook wb = new XSSFWorkbook();try {String sheetName = data.getName();if (null == sheetName) {sheetName = "Sheet1";}XSSFSheet sheet = wb.createSheet(sheetName);writeExcel(wb, sheet, data);wb.write(out);} catch(Exception e){e.printStackTrace();}finally{//此处需要关闭 wb 变量out.close();}}private static void writeExcel(XSSFWorkbook wb, Sheet sheet, ExcelData data) {int rowIndex = 0;rowIndex = writeTitlesToExcel(wb, sheet, data.getTitles());writeRowsToExcel(wb, sheet, data.getRows(), rowIndex);autoSizeColumns(sheet, data.getTitles().size() + 1);}private static int writeTitlesToExcel(XSSFWorkbook wb, Sheet sheet, List<String> titles) {int rowIndex = 0;int colIndex = 0;Font titleFont = wb.createFont();titleFont.setFontName("simsun");//titleFont.setBoldweight(Short.MAX_VALUE);// titleFont.setFontHeightInPoints((short) 14);titleFont.setColor(IndexedColors.BLACK.index);XSSFCellStyle titleStyle = wb.createCellStyle();titleStyle.setAlignment(XSSFCellStyle.ALIGN_CENTER);titleStyle.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);titleStyle.setFillForegroundColor(new XSSFColor(new Color(182, 184, 192)));titleStyle.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);titleStyle.setFont(titleFont);setBorder(titleStyle, BorderStyle.THIN, new XSSFColor(new Color(0, 0, 0)));Row titleRow = sheet.createRow(rowIndex);// titleRow.setHeightInPoints(25);colIndex = 0;for (String field : titles) {Cell cell = titleRow.createCell(colIndex);cell.setCellValue(field);cell.setCellStyle(titleStyle);colIndex++;}rowIndex++;return rowIndex;}private static int writeRowsToExcel(XSSFWorkbook wb, Sheet sheet, List<List<Object>> rows, int rowIndex) {int colIndex = 0;Font dataFont = wb.createFont();dataFont.setFontName("simsun");// dataFont.setFontHeightInPoints((short) 14);dataFont.setColor(IndexedColors.BLACK.index);XSSFCellStyle dataStyle = wb.createCellStyle();dataStyle.setAlignment(XSSFCellStyle.ALIGN_CENTER);dataStyle.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);dataStyle.setFont(dataFont);setBorder(dataStyle, BorderStyle.THIN, new XSSFColor(new Color(0, 0, 0)));for (List<Object> rowData : rows) {Row dataRow = sheet.createRow(rowIndex);// dataRow.setHeightInPoints(25);colIndex = 0;for (Object cellData : rowData) {Cell cell = dataRow.createCell(colIndex);if (cellData != null) {cell.setCellValue(cellData.toString());} else {cell.setCellValue("");}cell.setCellStyle(dataStyle);colIndex++;}rowIndex++;}return rowIndex;}private static void autoSizeColumns(Sheet sheet, int columnNumber) {for (int i = 0; i < columnNumber; i++) {int orgWidth = sheet.getColumnWidth(i);sheet.autoSizeColumn(i, true);int newWidth = (int) (sheet.getColumnWidth(i) + 100);if (newWidth > orgWidth) {sheet.setColumnWidth(i, newWidth);} else {sheet.setColumnWidth(i, orgWidth);}}}private static void setBorder(XSSFCellStyle style, BorderStyle border, XSSFColor color) {style.setBorderTop(border);style.setBorderLeft(border);style.setBorderRight(border);style.setBorderBottom(border);style.setBorderColor(BorderSide.TOP, color);style.setBorderColor(BorderSide.LEFT, color);style.setBorderColor(BorderSide.RIGHT, color);style.setBorderColor(BorderSide.BOTTOM, color);}
}

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;import javax.servlet.http.HttpServletResponse;import com.soft.ssmproject.entity.ExcelData;
import com.soft.ssmproject.entity.ExcelInfo;
import com.soft.ssmproject.tool.ExcelUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;@RestController
@RequestMapping("/excel")
public class ExcelController {@RequestMapping(value = "/export", method = RequestMethod.POST)public void excel(HttpServletResponse response,ExcelInfo excelInfo) throws Exception {ExcelData data = new ExcelData();data.setName("用户信息数据");//添加表头List<String> titles = new ArrayList();//for(String title: excelInfo.getNames())titles.add(excelInfo.getNames()[0]);titles.add(excelInfo.getAccount()[0]);titles.add(excelInfo.getDept()[0]);titles.add(excelInfo.getGender()[0]);titles.add(excelInfo.getEmail()[0]);data.setTitles(titles);//添加列List<List<Object>> rows = new ArrayList();List<Object> row = null;for(int i=1; i<excelInfo.getNames().length;i++){row=new ArrayList();row.add(excelInfo.getNames()[i]);row.add(excelInfo.getAccount()[i]);row.add(excelInfo.getDept()[i]);row.add(excelInfo.getGender()[i]);row.add(excelInfo.getEmail()[i]);rows.add(row);}data.setRows(rows);SimpleDateFormat fdate=new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");String fileName=fdate.format(new Date())+".xls";ExcelUtils.exportExcel(response, fileName, data);}
}