POI操作Execl

 1 //execl表导出
 2      public void  doExportExcel() throws Exception{
 3         userlist= userService.findObjects();
 4         HttpServletResponse res= ServletActionContext.getResponse();
 5         res.setContentType("application/x-execl");
 6         res.setHeader("Content-Disposition", "attachment;filename= "+new String("用户表.xls".getBytes(), "ISO-8859-1"));
 7         ServletOutputStream outputStream = res.getOutputStream();
 8         userService.exportExcel(userlist,outputStream);
 9        
10         if(outputStream != null){
11             outputStream.close();
12         }
13          
14          
15      }

 1 public class UserexeclUntils {
 2     
 3     //导出execl
 4     public  static  void exportExcel(List<User> userlist,
 5             ServletOutputStream outputStream) {
 6       // 1 创建工作簿
 7         
 8         HSSFWorkbook workbook=new HSSFWorkbook();
 9         //1.1创建合并单元格
10         
11         CellRangeAddress cellrangeaddress=new CellRangeAddress(0,0,0,4);//起始行, 结束行, 起始列，结束列
12         
13         //1.2 创建头标题样式
14         HSSFCellStyle style1=cellStyle(workbook,(short) 16);
15         //1.3 创建列表题样式
16         HSSFCellStyle style2=cellStyle(workbook,(short) 13);
17         
18          // 2   创建工作表
19         HSSFSheet sheet=workbook.createSheet("用户表");
20         sheet.addMergedRegion(cellrangeaddress);
21         //设置工作表行宽样式
22         sheet.setDefaultColumnWidth(25);
23       // 3，4  创建行和列
24         
25         //第一行
26         HSSFRow row=sheet.createRow(0);
27         HSSFCell cell=row.createCell(0);
28         cell.setCellStyle(style1);
29         cell.setCellValue("用户列表");
30         
31         //创建第二行
32         HSSFRow row1=sheet.createRow(1);
33         String[] values={"用户名","账号","所属部门","性别","电子邮箱"};
34         for(int i=0;i<values.length;i++){
35             HSSFCell ce=row1.createCell(i);
36             ce.setCellStyle(style2);
37             ce.setCellValue(values[i]);
38           
39         }
40         
41         
42         //迭代用户信息
43         User u=null;
44         if(userlist!=null){
45         for(int j=0;j<userlist.size();j++){
46             u=userlist.get(j);
47             //创建行
48             HSSFRow hssfRow=sheet.createRow(j+2);
49             //创建列
50             HSSFCell cell11=hssfRow.createCell(0);
51             cell11.setCellValue(u.getName());
52             HSSFCell cell12=hssfRow.createCell(1);
53             cell12.setCellValue(u.getAccount());
54             HSSFCell cell13=hssfRow.createCell(2);
55             cell13.setCellValue(u.getDept());
56             HSSFCell cell14=hssfRow.createCell(3);
57             cell14.setCellValue(u.isGender()?"男":"女");
58             HSSFCell cell15=hssfRow.createCell(4);
59             cell15.setCellValue(u.getEmail());
60         }
61        }
62         //将工作簿写到输出流
63         try {
64             workbook.write(outputStream);
65         } catch (Exception e) {
66             e.printStackTrace();
67         }
68         
69         
70     }
71     
72     public static HSSFCellStyle cellStyle(HSSFWorkbook workbook,short size){
73         
74         HSSFCellStyle style =workbook.createCellStyle();
75         style.setAlignment(HSSFCellStyle.ALIGN_CENTER);//水平居中
76         style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);//垂直居中! 
77         
78     
79         HSSFFont font= workbook.createFont();
80         font.setFontHeightInPoints(size);
81         font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
82         //
83         style.setFont(font);
84            return style;
85     }
86     
87 
88 }

 1  //execl表导入
 2     @Override
 3     public void doImportExcel(File userExcel, String userExcelFileName) {
 4         //获取文件输出流
 5         FileInputStream fileInputStream;
 6         Workbook workbook;
 7         try {
 8             fileInputStream = new FileInputStream(userExcel);
 9             boolean is03execl=userExcelFileName.matches("^.+\\.(?i)(xls)$");
10             //创建工作簿
11              workbook=is03execl?new HSSFWorkbook(fileInputStream):new XSSFWorkbook(fileInputStream);
12              //获取工作表
13              Sheet sheet=workbook.getSheetAt(0);
14              User u=null;
15              if(sheet.getPhysicalNumberOfRows()>2){
16                  //说明存在用户数据,迭代保存到数据库
17                  for(int i=2;i<sheet.getPhysicalNumberOfRows();i++){
18                      u=new User();
19                      //获取第i行
20                      Row row=sheet.getRow(i);
21                     u.setName(row.getCell(0).getStringCellValue());
22                     u.setAccount(row.getCell(1).getStringCellValue());
23                     u.setDept(row.getCell(2).getStringCellValue());
24                     u.setGender(row.getCell(3).getStringCellValue().equals("男"));
25                     
26                     String mobile="";
27                     try{
28                         mobile= row.getCell(4).getStringCellValue();
29                     
30                     }catch(Exception e){
31                         mobile=BigDecimal.valueOf(row.getCell(4).getNumericCellValue()).toString();
32                     }
33                     
34                     u.setMobile(mobile);
35                     u.setEmail(row.getCell(5).getStringCellValue());
36                     u.setBirthday(row.getCell(6).getDateCellValue());
37                     save(u);
38                  }
39                  
40              }
41                 
42         } catch (Exception e) {
43             // TODO Auto-generated catch block
44             e.printStackTrace();
45         }
46     }