在项目中用到了excel表格导入到数据库,觉得很实用,分享给和我一样码代码的码农们
想把上传的文件导入到数据库中,首先要先获取到该文件在服务器中的路径。
controller.java
String fileNames = filePath.replace("\\", "/");
File file = new File(fileNames);
InputStream is;
try {
is = new FileInputStream(file);
System.out.println(is);
System.out.println(is.available());
ExcelHelper help = new ExcelHelper();
List
if(temp.size()==0){
}else if(temp.get(0).indexOf("error")>-1){
}
headcheckRegisterService.AssessExcel(temp);//添加到数据库
} catch (IOException e) {
e.printStackTrace();
}
ExcelHelper.java
package com.roots.smp.manage.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.UUID;
import org.apache.commons.io.FilenameUtils;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellValue;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
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 ExcelHelper {
/**
* Excel 2003
*/
private final static String XLS = "xls";
/**
* Excel 2007
*/
private final static String XLSX = "xlsx";
/**
* 分隔符
*/
private final static String SEPARATOR = "|";
/**
* 由Excel文件的Sheet导出至List
*
* @param file
* @param sheetNum
* @return
*/
public static List
throws IOException {
return exportListFromExcel(new FileInputStream(file),
FilenameUtils.getExtension(file.getName()), sheetNum);
}
/**
* 由Excel流的Sheet导出至List
*
* @param is
* @param extensionName
* @param sheetNum
* @return
* @throws IOException
*/
public static List
Workbook workbook = null;
String end = extensionName.substring(extensionName.lastIndexOf(".")+1, extensionName.length()).toLowerCase();
if (end.equals(XLS)) {
workbook = new HSSFWorkbook(is);
} else if (end.equals(XLSX)) {
workbook = new XSSFWorkbook(is);
}
return exportListFromExcel(workbook, sheetNum);
}
/**
* 由指定的Sheet导出至List
*
* @param workbook
* @param sheetNum
* @return
* @throws IOException
*/
private static List
SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd");
Sheet sheet = workbook.getSheetAt(sheetNum);
// 解析公式结果
FormulaEvaluator evaluator = workbook.getCreationHelper().createFormulaEvaluator();
List
StringBuffer errorStr = new StringBuffer();
int minRowIx = sheet.getFirstRowNum();
int maxRowIx = sheet.getLastRowNum();
for (int rowIx = minRowIx+1; rowIx <= maxRowIx; rowIx++) {
Row row = sheet.getRow(rowIx);
StringBuilder sb = new StringBuilder();
/* int minColIx = row.getFirstCellNum();*/
int minColIx =0;
int maxColIx = row.getLastCellNum();
for (int colIx = minColIx; colIx <= maxColIx-1; colIx++) {
Cell cell = row.getCell(new Integer(colIx));
//String Scell=cell.toString();
CellValue cellValue = evaluator.evaluate(cell);
if (cellValue == null) {
errorStr.append("error:EXCEL文件第[").append(rowIx+1).append("]行的第[").append(colIx+1).append("]列为空!
");
continue;
} /*else if(cell.toString().length()>25){
errorStr.append("error:EXCEL文件第[").append(rowIx+1).append("]行的第[").append(colIx+1).append("]列长度大于25位字符!
");
continue;
} else if(colIx==4){
if(MathTools.isNumeric(cell.toString())==false){
errorStr.append("error:EXCEL文件第[").append(rowIx+1).append("]行的第[").append(colIx+1).append("]列金额不是数字!
");
}
}*/
// 经过公式解析,最后只存在Boolean、Numeric和String三种数据类型,此外就是Error了
// 其余数据类型,根据官方文档,完全可以忽略http://poi.apache.org/spreadsheet/eval.html
switch (cellValue.getCellType()) {
case Cell.CELL_TYPE_BOOLEAN:
sb.append(SEPARATOR + cellValue.getBooleanValue());
break;
case Cell.CELL_TYPE_NUMERIC:
if (DateUtil.isCellDateFormatted(cell)) {
sb.append(SEPARATOR + df.format(cell.getDateCellValue()));
}else {
sb.append(SEPARATOR + cellValue.getNumberValue());
}
break;
case Cell.CELL_TYPE_STRING:
sb.append(SEPARATOR + cellValue.getStringValue());
break;
case Cell.CELL_TYPE_FORMULA:
sb.append(SEPARATOR + cell.getCellFormula());
break;
case Cell.CELL_TYPE_BLANK:
break;
case Cell.CELL_TYPE_ERROR:
break;
default:
break;
}
}
list.add(sb.toString());
}
if(errorStr.length()>0){
List
listerror.add(errorStr.toString());
return listerror;
}
return list;
}
/* service调用的方法demo*/
/* @Override
public void importDempartment(List
List
if(lists != null && lists.size() > 0){
Department department = null;
for (String temp : lists) {
String array = temp.substring(1, temp.length());
String [] emp = array.split("\\|");
if (null != emp) {
if (null != emp[0] && !"".equals(emp[0])) {//部门名称不允许为空
department = new Department();
department.setDepartmentId(UUID.randomUUID().toString());
department.setDepartmentName(emp[0]);
if (emp.length == 2) {
department.setDepartmentDesc(emp[1]);
}else {
department.setDepartmentDesc("");
}
department.setCreateUserId(user.getEmployeeId());
department.setCreateDate(new Date());
department.setCompanyId(user.getCompany().getCompanyId());
department.setOwnerCode(user.getCompany().getCompanyCode());
departmentList.add(department);
department = null;
}
}
}
}
if(departmentList != null && departmentList.size() > 0){
DepartmentDao.saveBatch(departmentList);
}
}*/
public static void main(String[] args) {
//String fileName = "D:/test.xls";
String fileName = "F:/tomcat7/apache-tomcat-7.0.72/webapps/AitaServer/tempfile/modulefile/phy/2016120913313132393.xlsx";
System.out.println(fileName);
File file = new File(fileName);
System.out.println(file);
InputStream is;
try {
is = new FileInputStream(file);
System.out.println(is);
System.out.println(is.available());
ExcelHelper help = new ExcelHelper();
List
System.out.println(temp.size());
for (String string : temp) {
System.out.println(string);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
这样便完成了导入excel到数据库的功能。。。。。。写的不好,请多多指教