Gridview in Servlets using jQuery DataTables plugin

 
In this article we shall learn the basic coding that required to create JQuery DataTable using JSON passed by servlet. DataTable is a jQuery plugin which adds a lot of functionality to plain HTML tables, such as filtering, paging sorting, changing page length, server side processing etc.
 

 

Library required

• DataTable Plugin
• Google Gson
• jQuery UI themes

Installation

 
Above download will provide two JQuery plugin jquery.js and jquery.dataTables.js

 
Default stylesheet which shipped with latest DataTable download package

Project Structure

Create a dynamic web project with following folder structure and place the above files as shown.
 

 

Model class

package com.model;

public class RevenueReport {

	public RevenueReport(String company, String country, int year, int revenue) {
		this.company = company;
		this.country = country;
		this.year = year;
		this.revenue = revenue;
	}

	private String company;
	private String country;
	private int year;
	private int revenue;

	public String getCountry() {
		return country;
	}

	public int getRevenue() {
		return revenue;
	}

	public String getCompany() {
		return company;
	}

	public int getYear() {
		return year;
	}

	public void setCountry(String country) {
		this.country = country;
	}

	public void setRevenue(int revenue) {
		this.revenue = revenue;
	}

	public void setCompany(String company) {
		this.company = company;
	}

	public void setYear(int year) {
		this.year = year;
	}
}

Recommended reading:

Business class

 
This Business Service class which provides static data using model class.
 

package com.service;

import java.util.LinkedList;
import java.util.List;

import com.model.RevenueReport;

public class BusinessService {

public static List getCompanyList() {

	List listOfCompany = new LinkedList();

	listOfCompany.add(new RevenueReport("Bosch", "Germany",2012, 40000));
	listOfCompany.add(new RevenueReport("XYZ", "India",2014, 10000));
	listOfCompany.add(new RevenueReport("Robotics", "United Kingdom",2011, 35000));
	listOfCompany.add(new RevenueReport("Merch", "USA",2010, 20000));
	listOfCompany.add(new RevenueReport("Foxtron", "Indonesia",2009, 15000));
	listOfCompany.add(new RevenueReport("Benz", "Germany",2013, 50000));
	listOfCompany.add(new RevenueReport("Audi", "United Kingdom",2012, 60000));
	listOfCompany.add(new RevenueReport("Hyat", "France",2011, 30000));
	listOfCompany.add(new RevenueReport("HCL", "India",2007, 23000));
	listOfCompany.add(new RevenueReport("CTS", "USA",2010, 42000));
	listOfCompany.add(new RevenueReport("Accenture", "France",2008, 15000));
	listOfCompany.add(new RevenueReport("Air India", "India",2005, 10000));
	listOfCompany.add(new RevenueReport("Kingfisher", "India",2011, 8000));
	listOfCompany.add(new RevenueReport("Vodaphone", "Netharland",2006, 45000));
	
	return listOfCompany;
}
}

Jsp

Ajax based Gridview using jQuery DataTable plugin

	

	

	

		
Company
		
Country
		
Year
		
Revenue
	
	
	

	
	

DataTable Parameters class

 
In reply to each request for information that DataTables makes to the server, it expects to get a well formed JSON object with some parameters.So Create a DataTable Parameters class with all those required parameters
 

package com.dataTable;

import java.util.List;

import com.model.RevenueReport;

public class DataTableParameters {
	// Data table plugin parameter
	int iTotalRecords;
	int iTotalDisplayRecords;
	String sEcho;
	String sColumns;
	List aaData;

	public int getiTotalRecords() {
		return iTotalRecords;
	}

	public void setiTotalRecords(int iTotalRecords) {
		this.iTotalRecords = iTotalRecords;
	}

	public int getiTotalDisplayRecords() {
		return iTotalDisplayRecords;
	}

	public void setiTotalDisplayRecords(int iTotalDisplayRecords) {
		this.iTotalDisplayRecords = iTotalDisplayRecords;
	}

	public String getsEcho() {
		return sEcho;
	}

	public void setsEcho(String sEcho) {
		this.sEcho = sEcho;
	}

	public String getsColumns() {
		return sColumns;
	}

	public void setsColumns(String sColumns) {
		this.sColumns = sColumns;
	}

	public List getAaData() {
		return aaData;
	}

	public void setAaData(List aaData) {
		this.aaData = aaData;
	}
}

Servlet implementation

package com.servlet;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.dataTable.DataTableParameters;
import com.model.RevenueReport;
import com.service.BusinessService;

public class DataTableServlet extends HttpServlet {

	private static final long serialVersionUID = 1L;

	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("application/json");
		// Call business service class to get list of company
		List listOfCompany = BusinessService.getCompanyList();

		DataTableParameters dataTableParam = new DataTableParameters();
		// Set the list fetched in aaData
		dataTableParam.setAaData(listOfCompany);

		Gson gson = new GsonBuilder().setPrettyPrinting().create();
		// Convert Java Object to Json
		String json = gson.toJson(dataTableParam);

		response.getWriter().print(json);
	}

	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}
}

web.xml

Make sure you have done servlet mapping properly in web.xml file. An example of this is given below,
 

	displayData
	displayData
	com.servlet.DataTableServlet


	displayData
	/displayData


	index.jsp

Reference

 
jQuery DataTables in Java Web Applications