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  • EXCEL上传POI

    Java SpringMVC POI上传excel并读取文件内容

    2017年11月27日 15:26:56  阅读数：15329
     

    用的SSM框架，所需要的jar包如图所示：，链接地址：jar包下载  ，下面直接上代码。

    1、ExcelUtil工具类

    [java] view plain copy

     
     
    1. <span style="color:#993399;"><span style="font-size:18px;color:#993399;">import java.text.DecimalFormat;  
    2. import java.text.SimpleDateFormat;  
    3. import java.util.Calendar;  
    4. import java.util.Date;  
    5. import java.util.regex.Matcher;  
    6. import java.util.regex.Pattern;  
    7.   
    8. import org.apache.poi.hssf.usermodel.HSSFCell;  
    9. import org.apache.poi.hssf.usermodel.HSSFDateUtil;  
    10. import org.apache.poi.ss.usermodel.Cell;  
    11. import org.apache.poi.ss.usermodel.DateUtil;  
    12. import org.apache.poi.xssf.usermodel.XSSFCell;  
    13.   
    14. /** 
    15.  * Excel工具类 
    16.  * @author lp 
    17.  * 
    18.  */  
    19. public class ExcelUtil {  
    20.     public static final String OFFICE_EXCEL_2003_POSTFIX = "xls";  
    21.     public static final String OFFICE_EXCEL_2010_POSTFIX = "xlsx";  
    22.     public static final String EMPTY = "";  
    23.     public static final String POINT = ".";  
    24.     public static SimpleDateFormat sdf =   new SimpleDateFormat("yyyy/MM/dd");  
    25.     /** 
    26.      * 获得path的后缀名 
    27.      * @param path 
    28.      * @return 
    29.      */  
    30.     public static String getPostfix(String path){  
    31.         if(path==null || EMPTY.equals(path.trim())){  
    32.             return EMPTY;  
    33.         }  
    34.         if(path.contains(POINT)){  
    35.             return path.substring(path.lastIndexOf(POINT)+1,path.length());  
    36.         }  
    37.         return EMPTY;  
    38.     }  
    39.     /** 
    40.      * 单元格格式 
    41.      * @param hssfCell 
    42.      * @return 
    43.      */  
    44.     @SuppressWarnings({ "static-access", "deprecation" })  
    45.     public static String getHValue(HSSFCell hssfCell){  
    46.          if (hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) {  
    47.              return String.valueOf(hssfCell.getBooleanCellValue());  
    48.          } else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) {  
    49.              String cellValue = "";  
    50.              if(HSSFDateUtil.isCellDateFormatted(hssfCell)){                  
    51.                  Date date = HSSFDateUtil.getJavaDate(hssfCell.getNumericCellValue());  
    52.                  cellValue = sdf.format(date);  
    53.              }else{  
    54.                  DecimalFormat df = new DecimalFormat("#.##");  
    55.                  cellValue = df.format(hssfCell.getNumericCellValue());  
    56.                  String strArr = cellValue.substring(cellValue.lastIndexOf(POINT)+1,cellValue.length());  
    57.                  if(strArr.equals("00")){  
    58.                      cellValue = cellValue.substring(0, cellValue.lastIndexOf(POINT));  
    59.                  }    
    60.              }  
    61.              return cellValue;  
    62.          } else {  
    63.             return String.valueOf(hssfCell.getStringCellValue());  
    64.          }  
    65.     }  
    66.     /** 
    67.      * 单元格格式 
    68.      * @param xssfCell 
    69.      * @return 
    70.      */  
    71.     public static String getXValue(XSSFCell xssfCell){  
    72.          if (xssfCell.getCellType() == Cell.CELL_TYPE_BOOLEAN) {  
    73.              return String.valueOf(xssfCell.getBooleanCellValue());  
    74.          } else if (xssfCell.getCellType() == Cell.CELL_TYPE_NUMERIC) {  
    75.              String cellValue = "";  
    76.              if(XSSFDateUtil.isCellDateFormatted(xssfCell)){  
    77.                  Date date = XSSFDateUtil.getJavaDate(xssfCell.getNumericCellValue());  
    78.                  cellValue = sdf.format(date);  
    79.              }else{  
    80.                  DecimalFormat df = new DecimalFormat("#.##");  
    81.                  cellValue = df.format(xssfCell.getNumericCellValue());  
    82.                  String strArr = cellValue.substring(cellValue.lastIndexOf(POINT)+1,cellValue.length());  
    83.                  if(strArr.equals("00")){  
    84.                      cellValue = cellValue.substring(0, cellValue.lastIndexOf(POINT));  
    85.                  }    
    86.              }  
    87.              return cellValue;  
    88.          } else {  
    89.             return String.valueOf(xssfCell.getStringCellValue());  
    90.          }  
    91.     }     
    92. /** 
    93.  * 自定义xssf日期工具类 
    94.  * @author lp 
    95.  * 
    96.  */  
    97. class XSSFDateUtil extends DateUtil{  
    98.     protected static int absoluteDay(Calendar cal, boolean use1904windowing) {    
    99.         return DateUtil.absoluteDay(cal, use1904windowing);    
    100.     }   
    101. }</span></span>  

    2、ExcelRead：读取Excel类

    [java] view plain copy

     
     
    1. package com.ssm.util;  
    2.   
    3. import java.io.IOException;  
    4. import java.io.InputStream;  
    5. import java.util.ArrayList;  
    6. import java.util.List;  
    7.   
    8. import org.apache.poi.hssf.usermodel.HSSFCell;  
    9. import org.apache.poi.hssf.usermodel.HSSFRow;  
    10. import org.apache.poi.hssf.usermodel.HSSFSheet;  
    11. import org.apache.poi.hssf.usermodel.HSSFWorkbook;  
    12. import org.apache.poi.xssf.usermodel.XSSFCell;  
    13. import org.apache.poi.xssf.usermodel.XSSFRow;  
    14. import org.apache.poi.xssf.usermodel.XSSFSheet;  
    15. import org.apache.poi.xssf.usermodel.XSSFWorkbook;  
    16. import org.springframework.web.multipart.MultipartFile;  
    17. /** 
    18.  * 读取Excel 
    19.  * @author lp 
    20.  * 
    21.  */  
    22. public class ExcelRead {      
    23.     public int totalRows; //sheet中总行数  
    24.     public static int totalCells; //每一行总单元格数  
    25.     /** 
    26.      * read the Excel .xlsx,.xls 
    27.      * @param file jsp中的上传文件 
    28.      * @return 
    29.      * @throws IOException  
    30.      */  
    31.     public List<ArrayList<String>> readExcel(MultipartFile file) throws IOException {  
    32.         if(file==null||ExcelUtil.EMPTY.equals(file.getOriginalFilename().trim())){  
    33.             return null;  
    34.         }else{  
    35.             String postfix = ExcelUtil.getPostfix(file.getOriginalFilename());  
    36.             if(!ExcelUtil.EMPTY.equals(postfix)){  
    37.                 if(ExcelUtil.OFFICE_EXCEL_2003_POSTFIX.equals(postfix)){  
    38.                     return readXls(file);  
    39.                 }else if(ExcelUtil.OFFICE_EXCEL_2010_POSTFIX.equals(postfix)){  
    40.                     return readXlsx(file);  
    41.                 }else{                    
    42.                     return null;  
    43.                 }  
    44.             }  
    45.         }  
    46.         return null;  
    47.     }  
    48.     /** 
    49.      * read the Excel 2010 .xlsx 
    50.      * @param file 
    51.      * @param beanclazz 
    52.      * @param titleExist 
    53.      * @return 
    54.      * @throws IOException  
    55.      */  
    56.     @SuppressWarnings("deprecation")  
    57.     public List<ArrayList<String>> readXlsx(MultipartFile file){  
    58.         List<ArrayList<String>> list = new ArrayList<ArrayList<String>>();  
    59.         // IO流读取文件  
    60.         InputStream input = null;  
    61.         XSSFWorkbook wb = null;  
    62.         ArrayList<String> rowList = null;  
    63.         try {  
    64.             input = file.getInputStream();  
    65.             // 创建文档  
    66.             wb = new XSSFWorkbook(input);                         
    67.             //读取sheet(页)  
    68.             for(int numSheet=0;numSheet<wb.getNumberOfSheets();numSheet++){  
    69.                 XSSFSheet xssfSheet = wb.getSheetAt(numSheet);  
    70.                 if(xssfSheet == null){  
    71.                     continue;  
    72.                 }  
    73.                 totalRows = xssfSheet.getLastRowNum();                
    74.                 //读取Row,从第二行开始  
    75.                 for(int rowNum = 1;rowNum <= totalRows;rowNum++){  
    76.                     XSSFRow xssfRow = xssfSheet.getRow(rowNum);  
    77.                     if(xssfRow!=null){  
    78.                         rowList = new ArrayList<String>();  
    79.                         totalCells = xssfRow.getLastCellNum();  
    80.                         //读取列，从第一列开始  
    81.                         for(int c=0;c<=totalCells+1;c++){  
    82.                             XSSFCell cell = xssfRow.getCell(c);  
    83.                             if(cell==null){  
    84.                                 rowList.add(ExcelUtil.EMPTY);  
    85.                                 continue;  
    86.                             }                             
    87.                             rowList.add(ExcelUtil.getXValue(cell).trim());  
    88.                         }     
    89.                     list.add(rowList);                                            
    90.                     }  
    91.                 }  
    92.             }  
    93.             return list;  
    94.         } catch (IOException e) {             
    95.             e.printStackTrace();  
    96.         } finally{  
    97.             try {  
    98.                 input.close();  
    99.             } catch (IOException e) {  
    100.                 e.printStackTrace();  
    101.             }  
    102.         }  
    103.         return null;  
    104.           
    105.     }  
    106.     /** 
    107.      * read the Excel 2003-2007 .xls 
    108.      * @param file 
    109.      * @param beanclazz 
    110.      * @param titleExist 
    111.      * @return 
    112.      * @throws IOException  
    113.      */  
    114.     public List<ArrayList<String>> readXls(MultipartFile file){   
    115.         List<ArrayList<String>> list = new ArrayList<ArrayList<String>>();  
    116.         // IO流读取文件  
    117.         InputStream input = null;  
    118.         HSSFWorkbook wb = null;  
    119.         ArrayList<String> rowList = null;  
    120.         try {  
    121.             input = file.getInputStream();  
    122.             // 创建文档  
    123.             wb = new HSSFWorkbook(input);                         
    124.             //读取sheet(页)  
    125.             for(int numSheet=0;numSheet<wb.getNumberOfSheets();numSheet++){  
    126.                 HSSFSheet hssfSheet = wb.getSheetAt(numSheet);  
    127.                 if(hssfSheet == null){  
    128.                     continue;  
    129.                 }  
    130.                 totalRows = hssfSheet.getLastRowNum();                
    131.                 //读取Row,从第二行开始  
    132.                 for(int rowNum = 1;rowNum <= totalRows;rowNum++){  
    133.                     HSSFRow hssfRow = hssfSheet.getRow(rowNum);  
    134.                     if(hssfRow!=null){  
    135.                         rowList = new ArrayList<String>();  
    136.                         totalCells = hssfRow.getLastCellNum();  
    137.                         //读取列，从第一列开始  
    138.                         for(short c=0;c<=totalCells+1;c++){  
    139.                             HSSFCell cell = hssfRow.getCell(c);  
    140.                             if(cell==null){  
    141.                                 rowList.add(ExcelUtil.EMPTY);  
    142.                                 continue;  
    143.                             }                             
    144.                             rowList.add(ExcelUtil.getHValue(cell).trim());  
    145.                         }          
    146.                         list.add(rowList);  
    147.                     }                     
    148.                 }  
    149.             }  
    150.             return list;  
    151.         } catch (IOException e) {             
    152.             e.printStackTrace();  
    153.         } finally{  
    154.             try {  
    155.                 input.close();  
    156.             } catch (IOException e) {  
    157.                 e.printStackTrace();  
    158.             }  
    159.         }  
    160.         return null;  
    161.     }  
    162. }  

    [java] view plain copy

     
     
    1.   

    3、Controller

    [java] view plain copy

     
     
    1.        /** 
    2.  * 转到Excel上传页面 
    3.  * @return 
    4.  * @author lp 
    5.  */  
    6. @RequestMapping(value="/read")  
    7. public String addExcel(){  
    8.     return "baseInfo/testExcel";  
    9. }  
    10. **  
    11.  * 读取Excel数据到数据库  
    12.  * @param file  
    13.  * @param request  
    14.  * @return  
    15.  * @throws IOException  
    16.  * @author lp  
    17.  */  
    18. @RequestMapping(value="/readExcel")   
    19. public ModelAndView readExcel(@RequestParam(value="excelFile") MultipartFile file,
    20. HttpServletRequest request,HttpSession session) throws IOException{  
    21.     ModelAndView mv = new ModelAndView();  
    22.     //判断文件是否为空  
    23.     if(file == null){  
    24.         mv.addObject("msg", "failed");  
    25.         mv.setViewName("excel_result");  
    26.         return mv;  
    27.     }  
    28.                String name = file.getOriginalFilename();  
    29.     long size = file.getSize();  
    30.     if(name == null || ExcelUtil.EMPTY.equals(name) && size==0){  
    31.         mv.addObject("msg", "failed");  
    32.         mv.setViewName("excel_result");  
    33.         return mv;  
    34.     }  
    35.     //读取Excel数据到List中  
    36.     List<ArrayList<String>> list = new ExcelRead().readExcel(file);  
    37.                //list中存的就是excel中的数据，可以根据excel中每一列的值转换成你所需要的值（从0开始），如：  
    38.     User user = null;  
    39.     List<User> liseUser = new ArrayList<User>();  
    40.     for(ArrayList<String> arr:list){                        
    41.         user= new User();                         
    42.         user.setAuthor(list.get(0));//每一行的第一个单元格  
    43.         listUser.add(user);  
    44.     }  
    45.     if(userService.saveBatchInsert(listUser)){  
    46.         mv.addObject("msg", "success");  
    47.     }else{  
    48.         mv.addObject("msg", "failed");  
    49.     }                     
    50.     mv.setViewName("excel_result");  
    51.     return mv;  
    52. }</span></span>  
     

    4、jsp

    （1）主页面添加“Excel导入”

    <a href="javascript:addExcel();"><em>Excel导入</em></a>function addExcel(){var dg = new $.dialog({title:'导入Excel',id:'excel',1000,height:400,iconTitle:false,cover:true,maxBtn:false,xButton:true,resize:false,page:'user/read.html',});dg.ShowDialog();}

    （2）导入页面

    [html] view plain copy

     
     
    1. <body>  
    2.     <form action="readExcel.html" enctype="multipart/form-data" method="post" id="batchAdd" name="batchAdd" target="result" onsubmit="return check();>  
    3.         <div style="margin: 30px;">  
    4.         <div><input id="excel_file" type="file" name="excelFile" size="50"/>  
    5.     </form>  
    6.     <iframe name="result" id="result" src="about:blank" frameborder="0" width="0" height="0"></iframe>  
    7. </body>  
    8. </html>  
    9. <script type="text/javascript">  
    10.         var dg;  
    11.         $(document).ready(function(){             
    12.             dg = frameElement.lhgDG;  
    13.             dg.addBtn('ok','保存',function(){  
    14.             $("#batchAdd").submit();  
    15.             this.disabled=true;                       
    16.             });  
    17.         });  
    18.           
    19.         function success(){  
    20.             if(dg.curWin.document.forms[0]){  
    21.                 dg.curWin.document.forms[0].action = dg.curWin.location+"";  
    22.                 dg.curWin.document.forms[0].submit();  
    23.             }else{  
    24.                 dg.curWin.location.reload();  
    25.             }  
    26.             dg.cancel();  
    27.         }  
    28.           
    29.         function failed(){  
    30.             alert("上传失败！");  
    31.         }  
    32. </script>  

    （3）提示页面

    [html] view plain copy

     
     
    1. <body>  
    2.     <script type="text/javascript">  
    3.         var msg = "${msg}";  
    4.         if(msg=="success" || msg==""){  
    5.             alert("保存成功");  
    6.             parent.success();  
    7.         }else{  
    8.             parent.failed();  
    9.         }  
    10.     </script>  
    11. </body>  

    5、service层

    service
    boolean saveBatchInsert(List<User> listUser);

    serviceimpl
    @Transactional
    public boolean saveBatchInsert(List<User> listUser){
    boolean flag = false;
    if(listBaseInfo != null){
    userMapper.batchInsert(listUser);
    flag = true;
    }
    return flag;
    }

    6、dao层

    void batchInsert(List<User> list);

    7、xml（oracle） 

    [html] view plain copy

     
     
    1. <insert id="batchInsert" parameterType="java.util.List" useGeneratedKeys="false" keyProperty="Id">  
    2.         insert into baseinfo(ID,Name,Sex,Birth,IdCardNo,Address,Tel,Author,AddDate,Status)   
    3.         <foreach collection="list" item="item" index="index" separator="union all">  
    4.             (select  
    5.         <span style="white-space:pre">    </span>#{item.id,jdbcType=NUMERIC},  
    6.                #{item.name,jdbcType=VARCHAR},  
    7.                #{item.sex,jdbcType=CHAR},                
    8.                #{item.birth,jdbcType=DATE},  
    9.                #{item.idCardNo,jdbcType=CHAR},              
    10.                #{item.address,jdbcType=VARCHAR},                 
    11.                #{item.tel,jdbcType=VARCHAR},                
    12.                #{item.author,jdbcType=VARCHAR},  
    13.                #{item.addDate,jdbcType=DATE},  
    14.                #{item.status,jdbcType=CHAR}              
    15.             from dual)  
    16.         </foreach>              
    17.     </insert>  
     
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  • 原文地址：https://www.cnblogs.com/liuhaobin/p/10726508.html
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