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Insert data in Excel File from Database using JSP
Posted on: August 26, 2008 at 12:00 AM

In this section, we have developed a application to insert data in excel file from database in JSP. We created file SearchUser.jsp, excelData.jsp.

Insert data in Excel File from Database using JSP

In this section, we have developed a application to insert data in excel file from database in JSP. We created file SearchUser.jsp, excelData.jsp.

Brief description of the flow of the application:

User opens SearchUser.jsp on the browser and enter the data to be search and click on the "Search" button.
After click "Search button, application will retrieve the data from database, create an excel file and data insert into newly generated excel file.
Steps to create an excel file :

Download the POI.jar from Apache Jakarta Project .

Extract it and then copy poi-2.5.1-final-20040804.jar, poi-contrib-2.5.1-final-20040804.jar and poi-scratchpad-2.5.1-final-20040804.jar into C:\apache-tomcat-5.5.23\common\lib directory .

Then download source code and paste into C:\apache-tomcat-5.5.23\webapps\excel.

Start the web server.

Create folder into C drive with the name 'excel' .

The excel file will generate into directory C:\excel.

After create an excel file open it and view the search data in the excel file.

Step 1: Create a web page ("SearchUser.jsp") to SearchForm.

<html>
<head>

</head>
<body>
<br><br><br><br>
<form name="searchForm" method="post" action="excelData.jsp">
<table align="center" bgcolor="LIGHTBLUE">
<tr>
<td colspan=3 align="center"><b>
<span style="font-size:20px;">Create a Excel file with Search Table</span></b></td>
</tr>
<tr>
<td colspan=3> </td>
</tr>
<tr>
<td><b>Search</b></td>
<td><input type="text" name="searchtxt" value=""></td>
<td><input type="submit" name="Submit" value="Search"></td>
</tr>
<tr>
<td colspan=3> </td>
</tr>
</table>
</form>
</body>
</html>

Step 3:Create a webpage "excelData.jsp" to retrieve the data from database and create excel file and insert the data into excel file.

<%@ page import="org.apache.poi.hssf.usermodel.HSSFSheet"%>

    <%@ page import="org.apache.poi.hssf.usermodel.HSSFWorkbook"%>

    <%@ page import="org.apache.poi.hssf.usermodel.HSSFRow"%>

    <%@ page import="org.apache.poi.hssf.usermodel.HSSFCell"%>

    <%@ page import="java.io.*" %>

    <%@ page import="java.util.*" %>

    <%@ page import="java.sql.*" %>

    

    <%! 

    Connection conn = null;

    String url = "jdbc:mysql://localhost:3306/";

	 String dbName = "user_register";

    String driver = "com.mysql.jdbc.Driver";

    String username = "root"; 

    String userPassword = "root";

    

    %>

    <br><br>

    <%

    

    java.util.Date date = new java.util.Date();

    

    String filename = "c:\\excel\\f"+date.getTime() +".xls" ;

    

    String  searchText="";

    if(request.getParameter("searchtxt")!=null)

 {

	  searchText= request.getParameter("searchtxt").toString();

 }

    

    try{

    

	 Class.forName(driver).newInstance();

      conn = DriverManager.getConnection(url+dbName,username,userPassword);

    

	   Statement stmt = conn.createStatement();

	  String strQuery = "select * from  register where firstname like '%"+searchText+"%' or lastname like '%"+searchText+"%'";

    

    

	  ResultSet rs = stmt.executeQuery(strQuery);

    

   HSSFWorkbook hwb = new HSSFWorkbook();

   HSSFSheet sheet = hwb.createSheet("new sheet");
    

    

     HSSFRow rowhead = sheet.createRow((short)2);

	 rowhead.createCell((short) 0).setCellValue("SNo");

   rowhead.createCell((short) 1).setCellValue("First Name");

    rowhead.createCell((short) 2).setCellValue("Last Name");

   rowhead.createCell((short) 3).setCellValue("Username");

   rowhead.createCell((short) 4).setCellValue("E-mail");

   rowhead.createCell((short) 5).setCellValue("Country");

    

  int index=3;

  int sno=0;

  String name="";

    while(rs.next()) 

	{

            sno++;

    

 HSSFRow row = sheet.createRow((short)index);

   row.createCell((short) 0).setCellValue(sno);

   row.createCell((short) 1).setCellValue(rs.getString(4));

   row.createCell((short) 2).setCellValue(rs.getString(5));

   row.createCell((short) 3).setCellValue(rs.getString(2));

   row.createCell((short) 4).setCellValue(rs.getString(6));

   row.createCell((short) 5).setCellValue(rs.getString(9));

   index++;

	}

   FileOutputStream fileOut = new FileOutputStream(filename);

   hwb.write(fileOut);

   fileOut.close();

   out.println("<b>Your excel file has been generated</b>");

    

        } catch ( Exception ex ) {

    

        } 

    %>

Successful Output of the program:

To click on "Search" Button to Search data and insert this data into excel file.

The Output is Display on the Browser :

Download the full web application shows here.

Download the application

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