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 强人锁男。 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

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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>