Télécharger + lire un fichier Excel dans un jsp en utilisant un POI
Je veux lire un fichier Excel dans JSP. Pour cela, j'ai d'abord téléchargé le fichier dans un dossier de la partition: D nommée uploads à l'aide d'un projet d'application Web et j'ai essayé de lire le fichier Excel chargé. file avec un autre projet Java. Les deux codes fonctionnent . Ici, il s'agit du code de téléchargement dans un dossier spécifique via un projet d'application Web (JSP et SERVLET):
Bibliothèques
- commons-fileupload-1.2.2.jar
- commons-io-2.1.jar
index.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<title>Upload File</title>
</head>
<body>
<form action="UploadFile" method="post" enctype="multipart/form-data">
Select File : <input type="file" name="filetoupload">
<br/>
<input type="submit" value="Upload File">
</form>
</body>
</html>
UploadServlet.Java (Servlet)
import Java.io.*;
import Java.io.IOException;
import Java.io.PrintWriter;
import Java.util.Date;
import Java.util.Iterator;
import Java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.Apache.commons.fileupload.FileItem;
import org.Apache.commons.fileupload.FileItemFactory;
import org.Apache.commons.fileupload.disk.DiskFileItemFactory;
import org.Apache.commons.fileupload.servlet.ServletFileUpload;
import org.Apache.commons.io.FilenameUtils;
public class UploadFile extends HttpServlet{
String saveFile="D:/upload/";
protected void processRequest(...)throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
boolean ismultipart=ServletFileUpload.isMultipartContent(request);
if(!ismultipart){
}else{
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List items = null;
try{
items = upload.parseRequest(request);
}catch(Exception e){
}
Iterator itr = items.iterator();
while(itr.hasNext()){
FileItem item = (FileItem)itr.next();
if(item.isFormField()){
}else{
String itemname = item.getName();
if((itemname==null || itemname.equals(""))){
continue;
}
String filename = FilenameUtils.getName(itemname);
File f = checkExist(filename);
item.write(f);
}
}
}
}catch(Exception e){
}
finally {
out.close();
}
}
private File checkExist(String fileName) {
File f = new File(saveFile+"/"+fileName);
if(f.exists()){
StringBuffer sb = new StringBuffer(fileName);
sb.insert(sb.lastIndexOf("."),"-"+new Date().getTime());
f = new File(saveFile+"/"+sb.toString());
}
return f;
}
@Override
protected void doGet(...)throws ServletException, IOException {
processRequest(request, response);
}
@Override
protected void doPost(...)throws ServletException, IOException {
processRequest(request, response);
}
@Override
public String getServletInfo() {
return "Short description";
}
}
Ensuite, je crée un nouveau Java PROJECT (SWING) et essaie le code de en lisant un fichier Excel via POI , cela a également fonctionné, voici le code:
Bibliothèques
- dom4j-1.6.1.jar
- poi-3.10-FINAL-20140208.jar
- poi-ooxml-3.9-20121203.jar
- poi-ooxml-schemas-3.9-20121203.jar
- xmlbeans-2.3.0.jar
JavaApplication.Java
import Java.io.*;
import Java.util.Iterator;
import org.Apache.poi.ss.usermodel.Cell;
import org.Apache.poi.ss.usermodel.Row;
import org.Apache.poi.xssf.usermodel.XSSFSheet;
import org.Apache.poi.xssf.usermodel.XSSFWorkbook;
public class JavaApplication{
public static void main(String[] args){
try{
FileInputStream file;
file = new FileInputStream(new File("D:\\upload\\total.xlsx"));
//Create Workbook instance holding reference to .xlsx file
XSSFWorkbook workbook = new XSSFWorkbook(file);
//Get first/desired sheet from the workbook
XSSFSheet sheet = workbook.getSheetAt(0);
//Iterate through each rows one by one
Iterator<Row> rowIterator = sheet.iterator();
while (rowIterator.hasNext()){
Row row = rowIterator.next();
//For each row, iterate through all the columns
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext()){
Cell cell = cellIterator.next();
//Check the cell type and format accordingly
switch (cell.getCellType()){
case Cell.CELL_TYPE_NUMERIC:
System.out.print(cell.getNumericCellValue() + "t");
break;
case Cell.CELL_TYPE_STRING:
System.out.print(cell.getStringCellValue() + "t");
break;
}
}
System.out.println("");
}
file.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
La question est comment mélanger ces deux codes to UPLOAD le fichier puis imprimer les données d'Excel dans une table en JSP ???? aidez-moi, je suis coincé depuis plus d'un mois sur cette procédure
après item.write(f); ajouter ceci
InputStream inputStream= new ByteArrayInputStream(IOUtils.toByteArray(new FileInputStream(f)));
Workbook wb = WorkbookFactory.create(inputStream);
Sheet mySheet = wb.getSheetAt(0);
Iterator<Row> rowIter = mySheet.rowIterator();
rowIter.next();
continuez votre code à partir d'ici.
<%@ page language="Java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ page import="org.Apache.poi.hssf.usermodel.HSSFCell"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<%
//HSSFCell cell=new HSSFCell();
//cell.
%>
<form action="uploadExcelsb123.jsp" method="post" enctype="multipart/form-data">
Name: <input type="file" name="Excel"><br>
<input type="submit"" name="Upload">
</form>
</body>
</html>
<%@page import="Java.sql.Connection"%>
<%@page import="Java.sql.PreparedStatement"%>
<%@page import="org.Apache.commons.io.IOUtils"%>
<%@ page
import="org.Apache.commons.fileupload.servlet.ServletFileUpload"%>
<%@ page import="org.Apache.commons.fileupload.disk.DiskFileItemFactory"%>
<%@ page import="org.Apache.commons.fileupload.*"%>
<%@ page import="com.api.dao.MyDataConnect"%>
<%@ page import="Java.util.*,Java.io.*"%>
<%@ page import="Java.util.Iterator"%>
<%@ page import="Java.util.List"%>
<%@ page import="Java.util.Map"%>
<%@ page import="Java.io.File"%>
<%@ page import="org.Apache.poi.hssf.usermodel.HSSFCell"%>
<%@ page import="org.Apache.poi.hssf.usermodel.HSSFRow"%>
<%@ page import="org.Apache.poi.hssf.usermodel.HSSFSheet"%>
<%@ page import="org.Apache.poi.hssf.usermodel.HSSFWorkbook"%>
<%@page import="com.api.dao.MyDataConnect;"%><html>
<head>
<title>Bulk Upload Page</title>
</head>
<body>
<%
Map<String,String> mp=new HashMap<String,String>();
try {
String ImageFile = "";
String itemName = "";
boolean isMultipart = ServletFileUpload
.isMultipartContent(request);
if (!isMultipart) {
} else {
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List items = null;
try {
items = upload.parseRequest(request);
} catch (FileUploadException e) {
e.getMessage();
}
Connection conn = new MyDataConnect().giveConnection();
//Date d = new Date();
FileItem item = (FileItem) items.get(0);
//InputStream is=item.getInputStream();
HSSFWorkbook workbook = new HSSFWorkbook(item.getInputStream());
String ipaddress=request.getRemoteAddr();
HSSFSheet sh = (HSSFSheet) workbook.getSheet("Sheet1");
Iterator<HSSFRow> rowIterator = sh.rowIterator();
%>
<table border="4">
<%
int rowcount=0;
System.out.println("xdgdsf");
while(rowIterator.hasNext()) {
String user_id="";
String name="",email="";
String age="";
HSSFRow row = rowIterator.next();
Iterator<HSSFCell> cellIterator = row.cellIterator();
%><tr> <%
int colcount=0;
while(cellIterator.hasNext()) {
HSSFCell cell = cellIterator.next();
%><td><%
String value="";
int no=0;
switch(cell.getCellType()) {
case HSSFCell.CELL_TYPE_NUMERIC:
System.out.print(cell.getNumericCellValue() + "\t\t");
if((int) cell.getNumericCellValue()==0){
no=0;
}else{
no=(int) cell.getNumericCellValue();
}
String column=mp.get(colcount+"");
if(column.trim().equals("user_id")){
out.print(cell.getNumericCellValue() + "\t\t");
user_id=no+"";
}else if(column.trim().equals("age")){
out.print(cell.getNumericCellValue() + "\t\t");
age=no+"";
}
break;
case HSSFCell.CELL_TYPE_STRING:
System.out.print(cell.getStringCellValue().toString() + "\t\t");
if(cell.getStringCellValue().toString()==null || cell.getStringCellValue().toString()=="" || cell.getStringCellValue().toString().trim().length()==0 ){
value="NA";
}else{
value=cell.getStringCellValue().toString();
}
if(rowcount!=0){
column=mp.get(colcount+"");
// System.out.println(mp);
if(column.trim().equals("name")){
out.print(cell.getStringCellValue().toString() + "\t\t");
name=value;
}else if(column.trim().equals("email")){
out.print(cell.getStringCellValue().toString() + "\t\t");
email=value;
}else if(column.trim().equals("user_id")){
out.print(cell.getNumericCellValue() + "\t\t");
user_id=no+"";
}else if(column.trim().equals("age")){
out.print(cell.getNumericCellValue() + "\t\t");
age=no+"";
}
}
break;
}
if(rowcount==0){
mp.put(colcount+"",cell.getStringCellValue().toString().trim());
}
colcount+=1;
%></td><%
}
System.out.println("\n");
rowcount+=1;
%></tr><%
if(rowcount!=0){
String query="insert into bulk_upload(user_id,name,email,age) values('"+user_id+"','"+name+"','"+email+"','"+age+"')";
System.out.println(query);
PreparedStatement ptmt=conn.prepareStatement(query);
int i=ptmt.executeUpdate();
if(i==1){
System.out.println("Updated --------- ");
}else{
System.out.println("Not Updated --------- ");
}
ptmt.close();
}
conn.close();
%></table><%
}
}
}catch(Exception e){
e.printStackTrace();
System.out.println(e);
}
%>
</body>
</html>
user_id et Age devrait être Integer restant devrait être String
abouve Code is for Java 1.5 accepte uniquement les fichiers xls et non xlsx, les bibliothèques sont
commons-fileupload-1.3.jar mysql-connector-Java-5.1.18-bin.jar org.Apache.commons.io.jar poi-2.5.1- final-20040804.jar