Office Excel导入数据库总结

项目是在SSH框架内实现:

使用的jar包

CDSN地址：http://download.csdn.net/download/lg_xulei/10148892

使用Maven:

pom.xml配置：

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

项目maven做了限制导入，可以使用

 <repositories>  
        <repository>  
            <id>central</id>  
            <name>Maven Central Repository</name>  
            <url>http://repo1.maven.org/maven2</url>  
            <snapshots>  
                <enabled>true</enabled>  
            </snapshots>  
        </repository>  
    </repositories>

具体JAVA实现：

包引用：

// 导入Excel
     public String ExcelInto() throws Exception {
        String directory = "/file";
        String targetDirectory = ServletActionContext.getServletContext().getRealPath(directory);
        //定义成员变量
        File target = UploadFileInfo.Upload(uploadFile, uploadFileFileName,targetDirectory);
        List<DangerLevel> sList = new ArrayList<DangerLevel>();
        /*Workbook wb = new HSSFWorkbook(excelFile);*/
        Workbook wb=null; 
        //这个地方在第一次定义局部变量时，后台报了一个stream关闭错误，是因为在try{}catch（）{}时，
        //第一次格式化数据没通过，流通道关闭了，所以只能使用如下的方式进行数据导入
        try {  
                 wb = new HSSFWorkbook(new FileInputStream(target));  
        } catch (OfficeXmlFileException e) {  
            try {  
                 wb = new XSSFWorkbook(new FileInputStream(target));  
            } catch (Exception e2) {  
                e2.printStackTrace();
            }  
        } catch (Exception e) {  
            e.printStackTrace();
        }  
        Sheet sheet = wb.getSheetAt(0);
        int rowNum = sheet.getLastRowNum() + 1;
        for (int i = 3; i < rowNum; i++) {
            DangerLevel dangerLevel = new DangerLevel();
            Row row = sheet.getRow(i);
            int cellNum = row.getLastCellNum();
            for (int j = 0; j < cellNum; j++) {
                SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd");
                Cell cell = row.getCell(j);
                String cellValue = null;
                switch (cell.getCellType()) { // 判断excel单元格内容的格式，并对其进行转换，以便插入数据库
                   case HSSFCell.CELL_TYPE_NUMERIC:// 数字类型  
                        if (HSSFDateUtil.isCellDateFormatted(cell)) {// 处理日期格式、时间格式  
                            if (cell.getCellStyle().getDataFormat() == HSSFDataFormat.getBuiltinFormat("h:mm")) {  
                                sdf = new SimpleDateFormat("HH:mm");  
                            } else {// 日期  
                                sdf = new SimpleDateFormat("yyyy-MM-dd");  
                            }  
                            Date date = cell.getDateCellValue();  
                            cellValue = sdf.format(date);  
                        } else if (cell.getCellStyle().getDataFormat() == 58) {  
                            // 处理自定义日期格式：m月d日(通过判断单元格的格式id解决，id的值是58)  
                            sdf = new SimpleDateFormat("yyyy-MM-dd");  
                            double value = cell.getNumericCellValue();  
                            Date date = DateUtil.getJavaDate(value);  
                            cellValue = sdf.format(date);  
                        } else {  
                            double value = cell.getNumericCellValue();  
                            CellStyle style = cell.getCellStyle();  
                            DecimalFormat format = new DecimalFormat();  
                            String temp = style.getDataFormatString();  
                            // 单元格设置成常规  
                            if (temp.equals("General")) {  
                                format.applyPattern("#");  
                            }  
                            cellValue = format.format(value);  
                        }  
                        break;  
                 case HSSFCell.CELL_TYPE_STRING:// String类型  
                    cellValue = cell.getRichStringCellValue().toString();  
                    break;  
                 case HSSFCell.CELL_TYPE_BLANK:  
                    cellValue = "";  
                 default:  
                    cellValue = "";  
                    break;  
                }
                switch (j) {// 通过列数来判断对应插如的字段
                case 0:
                    dangerLevel.setNote1(cellValue);
                    break;
                case 1:
                    dangerLevel.setRummager(cellValue);
                    break;
                case 2:
                    dangerLevel.setCheckTime(sdf.parse(cellValue));
                    break;
                case 3:
                    dangerLevel.setCheckType(cellValue);
                    break;
                case 4:
                    dangerLevel.setSpotName(cellValue);
                    break;
                case 5:
                    dangerLevel.setDangerDesc(cellValue);
                    break;
                case 6:
                    dangerLevel.setClassification(cellValue);
                    break;
                case 7:
                    dangerLevel.setDangerLevel(cellValue);
                    break;
                case 8:
                    dangerLevel.setDangerType(cellValue);
                    break;
                case 9:
                    dangerLevel.setIssuedTime(sdf.parse(cellValue));
                    break;
                case 10:
                    dangerLevel.setIssuedMan(cellValue);
                    break;
                case 11:
                    dangerLevel.setRectifyPlan(cellValue);
                    break;
                case 12:
                    dangerLevel.setPostponedDeadLine(sdf.parse(cellValue));
                    break;
                case 13:
                    dangerLevel.setRectifyUserName(cellValue);
                    break;
                case 14:
                    dangerLevel.setRectifyCompany(cellValue);
                    break;
                case 15:
                    dangerLevel.setRectifyResult(cellValue);
                    break;
                case 16:
                    dangerLevel.setRectifyTime(sdf.parse(cellValue));
                    break;
                case 17:
                    dangerLevel.setRecheckerCompany(cellValue);
                    break;
                case 18:
                    dangerLevel.setRecheckerResult(cellValue);
                    break;
                case 19:
                    dangerLevel.setRecheckerName(cellValue);
                    break;
                case 20:
                    dangerLevel.setRecheckerTime(sdf.parse(cellValue));
                    break;
                case 21:
                    dangerLevel.setClearName(cellValue);
                    break;
                case 22:
                    dangerLevel.setClearTime(sdf.parse(cellValue));
                    break;
                case 23:
                    dangerLevel.setRecheckerName(cellValue);
                    break;
                case 24:
                    dangerLevel.setDangerLevelStatus(cellValue);
                    break;
                case 25:
                    dangerLevel.setFileName(cellValue);
                    break;    
                case 26:
                    dangerLevel.setFilePath(cellValue);
                    break;    
                }
            }
            sList.add(dangerLevel);
        }
        dangerLevelService.addDangerLevel(sList);
        return "dangerLevel_middle";
     }
package com.hfky.crs.busi.domain;

import java.io.File;
import java.io.Serializable;

import org.apache.commons.io.FileUtils;

public class UploadFileInfo implements Serializable {

    private static final long serialVersionUID = -3076586641759098763L;
    
    /**
     * 待上传文件
     */
    private File upload;
    /**
     * 待上传文件名
     */
    private String uploadFileName;
    /**
     * 待上传文件的MIME类型
     */
    private String uploadContentType;
    
    /**
     * 成功上传的文件相对与根目录的文件名
     */
    private String uploadRelName;
    
    public File getUpload() {
        return upload;
    }

    public void setUpload(File upload) {
        this.upload = upload;
    }

    public String getFileName() {
        return uploadFileName;
    }

    public void setUploadFileName(String uploadFileName) {
        this.uploadFileName = uploadFileName;
    }

    public String getContentType() {
        return uploadContentType;
    }

    public void setUploadContentType(String uploadContentType) {
        this.uploadContentType = uploadContentType;
    }

    public String getUploadRelName() {
        return uploadRelName;
    }

    public void setUploadRelName(String uploadRelName) {
        this.uploadRelName = uploadRelName;
    }

    public String getUploadFileName() {
        return uploadFileName;
    }

    public String getUploadContentType() {
        return uploadContentType;
    }
    public static File Upload(File uploadFile, String uploadFileFileName,String targetDirectory)throws Exception {
        File target = new File(targetDirectory, uploadFileFileName);
        // 如果文件已经存在，则删除原有文件
        if (target.exists()) {
            target.delete();
        }
        // 复制file对象，实现上传
        FileUtils.copyFile(uploadFile, target);
        return target;
    }
    
}
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ include file="/resources/pages/system/inc-easyui.jsp"%>
<html>
<head>
<base href="<%=basePath %>"/>
<title>数据导入</title>
<link href="styles/css/blue.css" type="text/css" rel="stylesheet" />
</head>
 <body class="crs_ep_tablebodybg">
 <form action="danger!ExcelInto.action" enctype="multipart/form-data" method="post">
    <table border="0" cellspacing="0" cellpadding="0" class="crs_ep_tablestyle"> 
        <tr>
          <td colspan="99" id="more">
            <input type="file" name="uploadFile" id="uploadFile"/>
            <input type="submit" value="上传"/>
            <input type="reset" value="重置"/>
          </td>
        </tr>
      </table> 
  </form>
 </body>
</html>

这里使用的是from表单提交，为了效果，在List页面中使用的是Iframe,当Action导入完成return的是一个 result地址，所以关键问题是：上传后不能关闭iframe页面；

这里使用一个非常不优雅的方式解决【JQuery版本低，用户群使用IE8.9.10】：使用一个跳转过度页面，在这个过度页面使用js关闭ifarem，和刷新List页面。如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ include file="/resources/pages/system/inc-easyui.jsp"%>
<html>
<head>
<base href="<%=basePath %>"/>
<title>隐患数据导入</title>
<link href="styles/css/blue.css" type="text/css" rel="stylesheet" />
 <script type="text/javascript">
  $(function(){
  //获取父也页面对象
    parent.document.getElementById('cancelBtn').click();
  //获取父页面的id="cancelBtn".使用click()鼠标触发事件。
    parent.document.location.reload(); }); 
 </script> 
 </head> 
 <body> 
 </body
</html>
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原文地址：https://www.cnblogs.com/flytogalaxy/p/7997605.html