POI導入導出excel

1、ExcelUtil工具類 01.<font color="#993399"><font size="4" color="#993399">import java.text.DecimalFormat; 02.import java.text.SimpleDateFormat; 03.import java.util.Calendar; 04.import java.util.Date; 05.import java.util.regex.Matcher; 06.import java.util.regex.Pattern; 07. 08.import org.apache.poi.hssf.usermodel.HSSFCell; 09.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工具類 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. * 獲得path的後綴名 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. * 單元格格式 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. * 單元格格式 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. * 自定義xssf日期工具類 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.}</font></font> 2、ExcelRead：讀取Excel類 01.package com.ssm.util; 02. 03.import java.io.IOException; 04.import java.io.InputStream; 05.import java.util.ArrayList; 06.import java.util.List; 07. 08.import org.apache.poi.hssf.usermodel.HSSFCell; 09.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. * 讀取Excel 19. * @author lp 20. * 21. */ 22.public class ExcelRead { 23. public int totalRows; //sheet中總行數 24. public static int totalCells; //每一行總單元格數 25. /** 26. * read the Excel .xlsx,.xls 27. * @param file jsp中的上傳文件 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流讀取文件 60. InputStream input = null; 61. XSSFWorkbook wb = null; 62. ArrayList<string> rowList = null; 63. try { 64. input = file.getInputStream(); 65. // 創建文檔 66. wb = new XSSFWorkbook(input); 67. //讀取sheet(頁) 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. //讀取Row,從第二行開始 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. //讀取列，從第一列開始 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. } 90. } 91. } 92. return list; 93. } catch (IOException e) { 94. e.printStackTrace(); 95. } finally{ 96. try { 97. input.close(); 98. } catch (IOException e) { 99. e.printStackTrace(); 100. } 101. } 102. return null; 103. 104. } 105. /** 106. * read the Excel 2003-2007 .xls 107. * @param file 108. * @param beanclazz 109. * @param titleExist 110. * @return 111. * @throws IOException 112. */ 113. public List<ArrayList<string>> readXls(MultipartFile file){ 114. List<ArrayList<string>> list = new ArrayList<ArrayList<string>>(); 115. // IO流讀取文件 116. InputStream input = null; 117. HSSFWorkbook wb = null; 118. ArrayList<string> rowList = null; 119. try { 120. input = file.getInputStream(); 121. // 創建文檔 122. wb = new HSSFWorkbook(input); 123. //讀取sheet(頁) 124. for(int numSheet=0;numSheet<wb.getNumberOfSheets();numSheet++){ 125. HSSFSheet hssfSheet = wb.getSheetAt(numSheet); 126. if(hssfSheet == null){ 127. continue; 128. } 129. totalRows = hssfSheet.getLastRowNum(); 130. //讀取Row,從第二行開始 131. for(int rowNum = 1;rowNum <= totalRows;rowNum++){ 132. HSSFRow hssfRow = hssfSheet.getRow(rowNum); 133. if(hssfRow!=null){ 134. rowList = new ArrayList<string>(); 135. totalCells = hssfRow.getLastCellNum(); 136. //讀取列，從第一列開始 137. for(short c=0;c<=totalCells+1;c++){ 138. HSSFCell cell = hssfRow.getCell(c); 139. if(cell==null){ 140. rowList.add(ExcelUtil.EMPTY); 141. continue; 142. } 143. rowList.add(ExcelUtil.getHValue(cell).trim()); 144. } 145. list.add(rowList); 146. } 147. } 148. } 149. return list; 150. } catch (IOException e) { 151. e.printStackTrace(); 152. } finally{ 153. try { 154. input.close(); 155. } catch (IOException e) { 156. e.printStackTrace(); 157. } 158. } 159. return null; 160. } 161.} </string></string></string></string></string></string></string></string></string></string></string> 3、Controller 01.<font color="#993399"></font>

/** 
     * 轉到Excel上傳頁面 
     * @return 
     * @author lp 
     */  
    @RequestMapping(value="/read")  
    public String addExcel(){  
        return "baseInfo/testExcel";  
    }  
/** 
     * 讀取Excel數據到數據庫 
     * @param file 
     * @param request 
     * @return 
     * @throws IOException 
     * @author lp 
     */  
    @RequestMapping(value="/readExcel")   
    public ModelAndView readExcel(@RequestParam(value="excelFile") MultipartFile file,HttpServletRequest request,HttpSession session) throws IOException{  
        ModelAndView mv = new ModelAndView();  
        //判斷文件是否爲空  
        if(file == null){  
            mv.addObject("msg", "failed");  
            mv.setViewName("excel_result");  
            return mv;  
        }  
                String name = file.getOriginalFilename();  
        long size = file.getSize();  
        if(name == null || ExcelUtil.EMPTY.equals(name) && size==0){  
            mv.addObject("msg", "failed");  
            mv.setViewName("excel_result");  
            return mv;  
        }  
        //讀取Excel數據到List中  
        List<ArrayList> list = new ExcelRead().readExcel(file);  
                //list中存的就是excel中的數據，可以根據excel中每一列的值轉換成你所需要的值（從0開始），如：  
        User user = null;  
        List liseUser = new ArrayList();  
        for(ArrayList arr:list){                        
            user= new User();                         
            user.setAuthor(list.get(0));//每一行的第一個單元格  
            listUser.add(user);  
        }  
        if(userService.saveBatchInsert(listUser)){  
            mv.addObject("msg", "success");  
        }else{  
            mv.addObject("msg", "failed");  
        }                     
        mv.setViewName("excel_result");  
        return mv;  
    } 
 4、jsp （1）主頁面添加“Excel導入”Excel導入function addExcel(){ var dg = new $.dialog({title:'導入Excel', id:'excel',width:1000, height:400,iconTitle:false, cover:true,maxBtn:false, xButton:true,resize:false, page:'user/read.html',}); dg.ShowDialog();}（2）導入頁面  
[html] view plain copy print?
01.  
02.    <form action="readExcel.html" enctype="multipart/form-data" method="post" id="batchAdd" name="batchAdd" target="result" onsubmit="return check();>  
03.        

04.

05. 06. 07.

08. 09. （3）提示頁面 [html] view plain copy print? 01. 02. 11. 5、service層 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; } </user></user> 6、dao層 void batchInsert(List<user> list); </user> 7、xml 01.<insert id="batchInsert" parametertype="java.util.List" usegeneratedkeys="false" keyproperty="Id"> 02. insert into baseinfo(ID,Name,Sex,Birth,IdCardNo,Address,Tel,Author,AddDate,Status) 03. <foreach collection="list" item="item" index="index" separator="union all"> 04. (select 05. <span style="white-space:pre"> </span>#{item.id,jdbcType=NUMERIC}, 06. #{item.name,jdbcType=VARCHAR}, 07. #{item.sex,jdbcType=CHAR}, 08. #{item.birth,jdbcType=DATE}, 09. #{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>