Java_导出Excel

导出的Excel标题、Sheet名称、数据内容都可以使用中文​

一、pom.xml引入jar包

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<dependency>             <groupId>org.apache.poi</groupId>             <artifactId>poi-ooxml</artifactId>             <version>3.13</version>         </dependency>

二、Excel操作内部类

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import org.apache.poi.hssf.util.HSSFColor; import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.xssf.usermodel.*;   public class ExportInternalUtil {     private XSSFWorkbook wb = null;       private XSSFSheet sheet = null;       /**      * @param wb      * @param sheet      */     public ExportInternalUtil(XSSFWorkbook wb, XSSFSheet sheet) {         this.wb = wb;         this.sheet = sheet;     }       /**      * 合并单元格后给合并后的单元格加边框      *      * @param region      * @param cs      */     public void setRegionStyle(CellRangeAddress region, XSSFCellStyle cs) {           int toprowNum = region.getFirstRow();         for (int i = toprowNum; i <= region.getLastRow(); i++) {             XSSFRow row = sheet.getRow(i);             for (int j = region.getFirstColumn(); j <= region.getLastColumn(); j++) {                 XSSFCell cell = row.getCell(j);// XSSFCellUtil.getCell(row,                                                 // (short) j);                 cell.setCellStyle(cs);             }         }     }       /**      * 设置表头的单元格样式      *      * @return      */     public XSSFCellStyle getHeadStyle() {         // 创建单元格样式         XSSFCellStyle cellStyle = wb.createCellStyle();         // 设置单元格的背景颜色为淡蓝色         cellStyle.setFillForegroundColor(HSSFColor.PALE_BLUE.index);         cellStyle.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);         // 设置单元格居中对齐         cellStyle.setAlignment(XSSFCellStyle.ALIGN_CENTER);         // 设置单元格垂直居中对齐         cellStyle.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);         // 创建单元格内容显示不下时自动换行         cellStyle.setWrapText(true);         // 设置单元格字体样式         XSSFFont font = wb.createFont();         // 设置字体加粗         font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);         font.setFontName("宋体");         font.setFontHeight((short) 200);         cellStyle.setFont(font);         // 设置单元格边框为细线条         cellStyle.setBorderLeft(XSSFCellStyle.BORDER_THIN);         cellStyle.setBorderBottom(XSSFCellStyle.BORDER_THIN);         cellStyle.setBorderRight(XSSFCellStyle.BORDER_THIN);         cellStyle.setBorderTop(XSSFCellStyle.BORDER_THIN);         return cellStyle;     }       /**      * 设置表体的单元格样式      *      * @return      */     public XSSFCellStyle getBodyStyle() {         // 创建单元格样式         XSSFCellStyle cellStyle = wb.createCellStyle();         // 设置单元格居中对齐         cellStyle.setAlignment(XSSFCellStyle.ALIGN_CENTER);         // 设置单元格垂直居中对齐         cellStyle.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);         // 创建单元格内容显示不下时自动换行         cellStyle.setWrapText(true);         // 设置单元格字体样式         XSSFFont font = wb.createFont();         // 设置字体加粗         font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);         font.setFontName("宋体");         font.setFontHeight((short) 200);         cellStyle.setFont(font);         // 设置单元格边框为细线条         cellStyle.setBorderLeft(XSSFCellStyle.BORDER_THIN);         cellStyle.setBorderBottom(XSSFCellStyle.BORDER_THIN);         cellStyle.setBorderRight(XSSFCellStyle.BORDER_THIN);         cellStyle.setBorderTop(XSSFCellStyle.BORDER_THIN);         return cellStyle;     } }

三、Excel操作类

共外部调用，可设置Sheet名称、标题、数据等

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import java.io.IOException; import java.util.ArrayList;   import javax.servlet.ServletOutputStream;   import org.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFCellStyle; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook;   import com.james.domain.User;   public class ExportUtil {       public static void ExportExcel(String[] titles, ArrayList<User> list, ServletOutputStream outputStream) {         // 创建一个workbook 对应一个excel应用文件         XSSFWorkbook workBook = new XSSFWorkbook();         // 在workbook中添加一个sheet,对应Excel文件中的sheet         //Sheet名称，可以自定义中文名称         XSSFSheet sheet = workBook.createSheet("Sheet1");         ExportInternalUtil exportUtil = new ExportInternalUtil(workBook, sheet);         XSSFCellStyle headStyle = exportUtil.getHeadStyle();         XSSFCellStyle bodyStyle = exportUtil.getBodyStyle();         // 构建表头         XSSFRow headRow = sheet.createRow(0);         XSSFCell cell = null;           // 输出标题         for (int i = 0; i < titles.length; i++) {             cell = headRow.createCell(i);             cell.setCellStyle(headStyle);             cell.setCellValue(titles[i]);         }         // 构建表体数据         for (int j = 0; j < list.size(); j++) {             XSSFRow bodyRow = sheet.createRow(j + 1);             User user = list.get(j);               cell = bodyRow.createCell(0);             cell.setCellStyle(bodyStyle);             cell.setCellValue(user.getLastIp());               cell = bodyRow.createCell(1);             cell.setCellStyle(bodyStyle);             cell.setCellValue(user.getLastVisit());               cell = bodyRow.createCell(2);             cell.setCellStyle(bodyStyle);             cell.setCellValue(user.getPassword());                           cell = bodyRow.createCell(3);             cell.setCellStyle(bodyStyle);             cell.setCellValue(user.getUserName());                           cell = bodyRow.createCell(4);             cell.setCellStyle(bodyStyle);             cell.setCellValue(user.getUserId());         }           try {             workBook.write(outputStream);             outputStream.flush();             outputStream.close();         } catch (IOException e) {             e.printStackTrace();         } finally {             try {                 outputStream.close();             } catch (IOException e) {                 e.printStackTrace();             }         }     } }

四、SpringMVC Controller层调用

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@RequestMapping(value = "/excelDownload")     public String exportExcel(HttpServletResponse response) {         try {             //String fileName = new String(("导出excel标题").getBytes(), "UTF-8") + ".xlsx";             String fileName=new String(("导出excel标题").getBytes("gb2312"), "iso8859-1")+ ".xlsx";             response.setContentType("application/vnd.ms-excel;charset=UTF-8");             response.setHeader("Content-Disposition", "attachment;filename=" + fileName);             response.setCharacterEncoding("utf-8");               // response.setHeader("Content-disposition", "attachment; filename="             // + "exdddcel" + ".xlsx");// 组装附件名称和格式               String[] titles = { "最后IP", "最后访问时间", "密码", "用户名", "用户编号" };               /*SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");             String date = df.format(new Date());             Date dateNow = null;             try {                 dateNow = df.parse(date);             } catch (ParseException e) {                 e.printStackTrace();             }*/             Date dateNow = new Date();                           ArrayList<User> users = new ArrayList<User>();             User user = new User();             user.setLastIp("127.0.0.1");             user.setLastVisit(dateNow);             user.setPassword("123");             user.setUserId(1);             user.setUserName("名称：James");             users.add(user);               user = new User();             user.setLastIp("192.0.0.1");             user.setLastVisit(dateNow);             user.setPassword("456");             user.setUserId(2);             user.setUserName("名称：Mary");             users.add(user);               ServletOutputStream outputStream = response.getOutputStream();             ExportUtil.ExportExcel(titles, users, outputStream);         } catch (IOException e) {             e.printStackTrace();         }         return null;     }

五、程序中用到的实体类User

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import java.io.Serializable; import java.util.Date;   public class User implements Serializable {     private int userId;       private String userName;       private String password;       private String lastIp;       private Date lastVisit;       public int getUserId() {         return userId;     }       public void setUserId(int userId) {         this.userId = userId;     }       public String getUserName() {         return userName;     }       public void setUserName(String userName) {         this.userName = userName;     }       public String getPassword() {         return password;     }       public void setPassword(String password) {         this.password = password;     }       public String getLastIp() {         return lastIp;     }       public void setLastIp(String lastIp) {         this.lastIp = lastIp;     }       public Date getLastVisit() {         return lastVisit;     }       public void setLastVisit(Date lastVisit) {         this.lastVisit = lastVisit;     } }

六、异常情况

1、标题乱码（注释代码会出现标题乱码）

1 2	//String fileName = new String(("导出excel标题").getBytes(), "UTF-8") + ".xlsx";             String fileName=new String(("导出excel标题").getBytes("gb2312"), "iso8859-1")+ ".xlsx";

七、参考文档

1、http://webook-java.iteye.com/blog/1699621

2、http://www.cnblogs.com/yjmyzz/p/4206463.html

来自为知笔记(Wiz)