Я использую AjaxFileUpload для загрузки файла с некоторыми данными (поле ввода). Всякий раз, когда я пытаюсь загрузить файл, он показывает Загрузка файла ... , а затем застревает на некоторое время. Я проверил свою базу данных, но обнаружил, что это никак не отразилось.
Ниже то, что я сделал до сих пор.
index.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Ajax File Upload</title>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="ajaxfileupload.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#login_frm").submit(function(){
//remove previous class and add new "myinfo" class
// e.preventDefault();
$("#msgbox1").removeClass().addClass('myinfo').text('Uploading .... ').fadeIn(1000);
$.ajaxFileUpload({
url :'AddPhoto',
secureuri:false,
fileElementId:'image',
dataType: 'json',
success: function(msg){
// alert(msg.MSG)
$("#msgbox1").removeClass().addClass('myinfo').text(msg.MSG).fadeIn(1000);
if(msg.MSG=="Image Successfully Uploaded!!")
{
document.getElementById("image").disabled="disabled";
}
}
});
return false;
});
});
</script>
<link href="style.css" rel="stylesheet" type="text/css" />
<link href="login_style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<form name="login_frm" id="login_frm" action="" method="post">
<div id="login_box">
<div id="login_header"> Citizen Login </div>
<div id="form_val" style="background-color:black">
<div class="label">Image Name :</div>
<div class="control"><input type="text" name="imgname" id="imgname"/></div>
<div style="clear:both;height:0px;"></div>
<div id="msgbox"></div>
<div class="label">Photograph :</div>
<div class="control"><input type="file" name="image" id="image"/></div>
<div style="clear:both;height:0px;"></div>
<div id="msgbox1"></div>
</div>
<div id="login_footer">
<label>
<input type="submit" name="upload" id="upload" value="Upload" class="send_button" />
</label>
</div>
</div>
</form>
</body>
AddPhoto.java
package fileupload;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
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.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class AddPhoto extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
// Apache Commons-Fileupload library classes
DiskFileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload sfu = new ServletFileUpload(factory);
if (!ServletFileUpload.isMultipartContent(request)) {
out.print("{MSG:'File Not Uploaded !!'}");
return;
} else {
// parse request
out.print("{MSG:'File Uploading....'}");
List items = sfu.parseRequest(request);
FileItem file = (FileItem) items.get(0);
String type = file.getContentType();
int size = (int) (file.getSize() / 1024);
//String name="images";
String name = file.getFieldName();
out.println("{MSG:'Error" +size+ "'}");
if (name.equals("image")) {
if ((type.equals("image/jpeg")) && ((size < 201) && (size > 10))) {
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe", "epolicia", "admin");
con.setAutoCommit(false);
PreparedStatement ps = con.prepareStatement("insert into images(image) values(?)");
ps.setBinaryStream(1, file.getInputStream(), (int) file.getSize());
ps.executeUpdate();
con.commit();
con.close();
out.println("{MSG:'ID Proof Successfully Uploaded !!'}");
} else {
out.print("{MSG:'ID Proof is not jpg or its more than 200kb!!'}");
}
} else {
out.print("{MSG:'File Not Uploaded !!'}");
}
}
} catch (Exception ex) {
out.println("{MSG:'Error" + ex.getMessage() + "'}");
}
}
}