SpringMVC(5)---導入excel文件數據到數據庫

時間 2019-11-19

標籤 springmvc 導入 excel 文件數據數據庫欄目 Spring 简体版

原文原文鏈接

SpringMVC(5)---導入excel文件數據到數據庫

上一篇文章寫了從數據庫導出數據到excel文件，這篇文章悄悄相反，寫的是導入excel文件數據到數據庫。上一篇連接：springMVC(4)---生成excel文件並導出javascript

直接進入步驟講解：html

第一步、導入jar包

<dependency>
       <groupId>org.apache.poi</groupId>
       <artifactId>poi-ooxml</artifactId>
          <version>3.9</version>
  </dependency>

第二步，建立Model對象

我沒有把數據放到數據庫中，而是導入到實體中，而後在後臺打印前端

public class Family {
    //家庭編號
    private String jtbh;
    //姓名
    private String xm;
    //行業
    private String hy;
    //備註
    private String bz;
    
    /*
     * 提供set和get，toString方法
     */
}

第三步.導入excel界面 leadingexcel.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>  
<html>
 <head>   
    <script type="text/javascript" src="../js/jquery-1.7.1.js"></script> 
    <script type="text/javascript" src="../js/jquery.form.js"></script>     
    <script type="text/javascript">  
   
           /*  ajax 方式上傳文件操做 */  
             $(document).ready(function(){ 
                $("#btn").click(function(){ if(checkData()){  
                        $('#form1').ajaxSubmit({    
                            url:'uploadExcel/ajax',  
                            dataType: 'text',  
                            success: resutlMsg,  
                            error: errorMsg  
                        });   
                        function resutlMsg(msg){  
                            alert(msg);     
                            $("#upfile").val("");  
                        }  
                        function errorMsg(){   
                            alert("導入excel出錯！");      
                        }  
                    }   
                });  
             });  
               
             //JS校驗form表單信息  
             function checkData(){  
                var fileDir = $("#upfile").val();  
                var suffix = fileDir.substr(fileDir.lastIndexOf("."));  
                if("" == fileDir){  
                    alert("選擇須要導入的Excel文件！");  
                    return false;  
                }  
                if(".xls" != suffix && ".xlsx" != suffix ){  
                    alert("選擇Excel格式的文件導入！");  
                    return false;  
                }  
                return true;  
             }   
    </script>   
   </head>
  <body>  
 
    <form method="POST"  enctype="multipart/form-data" id="form1" action="uploadExcel/form">  
       
             <label>上傳文件: </label>
             <input id="upfile" type="file" name="upfile"><br> <br> 
       
            <input type="submit" value="表單提交" onclick="return checkData()">
            <input type="button" value="ajax提交" id="btn" name="btn" >  

    </form>       
  </body>  
</html>

先講下，我這src引用路徑的時候發現，怎麼也引用不到，找了很久才發現，我在springmvc中沒有配置靜態文件java

springmvc.xmljquery

 <!-- 靜態資源訪問 -->  
      <mvc:default-servlet-handler/>
 <!-- 當我僅配置上面的時候又發現src是引用到了，可是個人RequestMapping映射卻變成請求不到了，因此下面的也必定要加上 -->
      <mvc:annotation-driven></mvc:annotation-driven>

第四步、LeadingExcelController.java

import java.io.InputStream;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;

import com.ssm.model.Family;
import com.ssm.service.impl.ImportExcelUtil;

@Controller
@RequestMapping("/jsp/uploadExcel")
public class LeadingExcelController {

@RequestMapping("/form")    
public String form(HttpServletRequest request)throws Exception{
     MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;     
       
     InputStream in =null;  
     List<List<Object>> listob = null;  
     MultipartFile file = multipartRequest.getFile("upfile");  
    
     if(file.isEmpty()){  
         throw new Exception("文件不存在！");  
     }  
     in = file.getInputStream();  
     listob = new ImportExcelUtil().getBankListByExcel(in,file.getOriginalFilename());
     in.close();  
    
     //該處可調用service相應方法進行數據保存到數據庫中，現只對數據輸出  
     for (int i = 0; i < listob.size(); i++) {  
         List<Object> lo = listob.get(i);  
         Family family = new Family();  
         family.setJtbh(String.valueOf(lo.get(0)));  
         family.setXm(String.valueOf(lo.get(1)));  
         family.setHy(String.valueOf(lo.get(2)));  
         family.setBz(String.valueOf(lo.get(3)));  
           
         System.out.println("打印信息-->"+family.toString());  
     }  


    return null;
}

@RequestMapping(value="/ajax")  
public  void  ajaxUploadExcel(HttpServletRequest request,HttpServletResponse response) throws Exception {  
    MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;    
      
      
    InputStream in =null;  
    List<List<Object>> listob = null;  
    MultipartFile file = multipartRequest.getFile("upfile");  
    if(file.isEmpty()){  
        throw new Exception("文件不存在！");  
    }  
      
    in = file.getInputStream();  
    listob = new ImportExcelUtil().getBankListByExcel(in,file.getOriginalFilename());  
      
  //該處可調用service相應方法進行數據保存到數據庫中，現只對數據輸出  
    for (int i = 0; i < listob.size(); i++) {  
        List<Object> lo = listob.get(i);  
        Family family = new Family();  
        family.setJtbh(String.valueOf(lo.get(0)));  
        family.setXm(String.valueOf(lo.get(1)));  
        family.setHy(String.valueOf(lo.get(2)));  
        family.setBz(String.valueOf(lo.get(3)));  
          
        System.out.println("打印信息-->"+family.toString());  
    }  
      
    PrintWriter out = null;  
    response.setCharacterEncoding("utf-8");  //防止ajax接受到的中文信息亂碼  
    out = response.getWriter();  
    out.print("文件導入成功！");  
    out.flush();  
    out.close();  
} 

}

第五步、ImportExcelUtil.java 報表導入實現層

import java.io.IOException;  
import java.io.InputStream;  
import java.text.DecimalFormat;  
import java.text.SimpleDateFormat;  
import java.util.ArrayList;  
import java.util.List;  
  
import org.apache.poi.hssf.usermodel.HSSFWorkbook;  
import org.apache.poi.ss.usermodel.Cell;  
import org.apache.poi.ss.usermodel.Row;  
import org.apache.poi.ss.usermodel.Sheet;  
import org.apache.poi.ss.usermodel.Workbook;  
import org.apache.poi.xssf.usermodel.XSSFWorkbook;  
  
  
public class ImportExcelUtil {  
      
    private final static String excel2003L =".xls";    //2003- 版本的excel  
    private final static String excel2007U =".xlsx";   //2007+ 版本的excel  
      
    /** 
     * 描述：獲取IO流中的數據，組裝成List<List<Object>>對象 
     * @param in,fileName 
     * @return 
     * @throws IOException  
     */  
    public  List<List<Object>> getBankListByExcel(InputStream in,String fileName) throws Exception{  
        List<List<Object>> list = null;  
          
        //建立Excel工做薄  
        Workbook work = this.getWorkbook(in,fileName);  
        if(null == work){  
            throw new Exception("建立Excel工做薄爲空！");  
        }  
        Sheet sheet = null;  
        Row row = null;  
        Cell cell = null;  
          
        list = new ArrayList<List<Object>>();  
        //遍歷Excel中全部的sheet  
        for (int i = 0; i < work.getNumberOfSheets(); i++) {  
            sheet = work.getSheetAt(i);  
            if(sheet==null){continue;}  
              
            //遍歷當前sheet中的全部行  
            for (int j = sheet.getFirstRowNum(); j < sheet.getLastRowNum(); j++) {  
                row = sheet.getRow(j);  
                if(row==null||row.getFirstCellNum()==j){continue;}  
                  
                //遍歷全部的列  
                List<Object> li = new ArrayList<Object>();  
                for (int y = row.getFirstCellNum(); y < row.getLastCellNum(); y++) {  
                    cell = row.getCell(y);  
                    li.add(this.getCellValue(cell));  
                }  
                list.add(li);  
            }  
        } 
        in.close();  
        return list;  
    }  
      
    /** 
     * 描述：根據文件後綴，自適應上傳文件的版本  
     * @param inStr,fileName 
     * @return 
     * @throws Exception 
     */  
    public  Workbook getWorkbook(InputStream inStr,String fileName) throws Exception{  
        Workbook wb = null;  
        String fileType = fileName.substring(fileName.lastIndexOf("."));  
        if(excel2003L.equals(fileType)){  
            wb = new HSSFWorkbook(inStr);  //2003-  
        }else if(excel2007U.equals(fileType)){  
            wb = new XSSFWorkbook(inStr);  //2007+  
        }else{  
            throw new Exception("解析的文件格式有誤！");  
        }  
        return wb;  
    }  
  
    /** 
     * 描述：對錶格中數值進行格式化 
     * @param cell 
     * @return 
     */  
    public  Object getCellValue(Cell cell){  
        Object value = null;  
        DecimalFormat df = new DecimalFormat("0");  //格式化number String字符  
        SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd");  //日期格式化  
        DecimalFormat df2 = new DecimalFormat("0.00");  //格式化數字  
          
        switch (cell.getCellType()) {  
        case Cell.CELL_TYPE_STRING:  
            value = cell.getRichStringCellValue().getString();  
            break;  
        case Cell.CELL_TYPE_NUMERIC:  
            if("General".equals(cell.getCellStyle().getDataFormatString())){  
                value = df.format(cell.getNumericCellValue());  
            }else if("m/d/yy".equals(cell.getCellStyle().getDataFormatString())){  
                value = sdf.format(cell.getDateCellValue());  
            }else{  
                value = df2.format(cell.getNumericCellValue());  
            }  
            break;  
        case Cell.CELL_TYPE_BOOLEAN:  
            value = cell.getBooleanCellValue();  
            break;  
        case Cell.CELL_TYPE_BLANK:  
            value = "";  
            break;  
        default:  
            break;  
        }  
        return value;  
    }  
}