Problem obtain data from excel file via Jersy

Hello,

my objective is to build a Restful Service, so i use "Jeresy" (javax.ws.rs) to make it, now i try to obtain data from excel file an put them in array list, then i will use those data (which stored in the array list) in the code of Jersy to display it in Json format, but i get always error as the flowing:

Code:

HTTP Status 500 - java.lang.NoClassDefFoundError: org/apache/poi/hssf/usermodel/HSSFWorkbook



type Exception report



message java.lang.NoClassDefFoundError: org/apache/poi/hssf/usermodel/HSSFWorkbook



description The server encountered an internal error that prevented it from fulfilling this request.



exception



javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/poi/hssf/usermodel/HSSFWorkbook

        com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:420)

        com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)

        com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)

        javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

root cause



java.lang.NoClassDefFoundError: org/apache/poi/hssf/usermodel/HSSFWorkbook

        JavaBeans.Reader.read(Reader.java:30)

        JavaBeans.ArrList.arrList(ArrList.java:18)

        com.crunchify.restjersey.RestfullJersy.convertFtoC(RestfullJersy.java:21)

        sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

        sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

        java.lang.reflect.Method.invoke(Unknown Source)

        com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)

        com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)

        com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)

        com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)

        com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)

        com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)

        com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)

        com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1480)

        com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1411)

        com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1360)

        com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1350)

        com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)

        com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)

        com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)

        javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.41 logs.



Apache Tomcat/7.0.41

the code:
First code of Apache POI to read from excel file:

Code:

package JavaBeans;



import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.util.ArrayList;

import java.util.Iterator;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import org.apache.poi.ss.usermodel.Cell;

import org.apache.poi.ss.usermodel.Row;

import org.json.simple.JSONObject;







public class Reader {

        

        protected static ArrayList col = new ArrayList();

        





                public void read(){

                

        try {

             

            FileInputStream file = new FileInputStream(new File("d:\\hi.xls"));

             

            //Get the workbook instance for XLS file 

            HSSFWorkbook workbook = new HSSFWorkbook(file);

         

            //Get first sheet from the workbook

            HSSFSheet sheet = workbook.getSheetAt(0);

             

            //Iterate through each rows from first sheet

            Iterator<Row> rowIterator = sheet.iterator();

            while(rowIterator.hasNext()) {

                Row row = rowIterator.next();

                

                //display from the third row until 5th

                if(row.getRowNum()>2 && (row.getRowNum()<5))

                {

                {



                //For each row, iterate through each columns

                Iterator<Cell> cellIterator = row.cellIterator();

                while(cellIterator.hasNext()) {

                    

                    //Getting the cell contents

                    Cell cell = cellIterator.next();

                     

                    switch(cell.getCellType()) {

                        case Cell.CELL_TYPE_BOOLEAN:

                            System.out.print(cell.getBooleanCellValue() + "\t\t");

                            break;

                        case Cell.CELL_TYPE_NUMERIC:

                            System.out.print(cell.getNumericCellValue() + "\t\t");

                            break;

                        case Cell.CELL_TYPE_STRING:

                            System.out.print(cell.getStringCellValue() + "\t\t");

                            break;

                        case Cell.CELL_TYPE_FORMULA:

                                                System.out.println(cell.getCellFormula());

                                                break;

                                                                              }

                                         }

                               }

                }

                //store the values of the third Column

                 Cell cell = row.getCell(2); //if (cell.getColumnIndex() == 2)

                                if(cell != null){

                    //add the values of the cell to the Arraylist 

                    if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) 

                    {

                    col.add(cell.getNumericCellValue());

                    } 

                    else if (cell.getCellType() == Cell.CELL_TYPE_STRING) 

                    {

                    col.add(cell.getRichStringCellValue().getString());

                    } 

                    else if (cell.getCellType() == Cell.CELL_TYPE_BOOLEAN) 

                    {

                    col.add(cell.getBooleanCellValue());

                    }

                    }

                System.out.println("");

                

            }

            

            file.close();

            

                  } catch (FileNotFoundException e) {

                    e.printStackTrace();

                } catch (IOException e) {

                    e.printStackTrace();

                }

        }

        }

second the code of the Jeresy (Restful)

Code:

package com.crunchify.restjersey;





import javax.ws.rs.GET;

import javax.ws.rs.Path;

import javax.ws.rs.Produces;

import javax.ws.rs.core.Response;

import org.json.JSONException;

import org.json.JSONObject;

import JavaBeans.Reader;

 

@Path("/Exceltojersy")

public class RestfullJersy extends Reader{

        @GET

        @Produces("application/json")

        public Response convertFtoC() throws JSONException {

                

                Reader read = new Reader();

                read.read();

                

                                 JSONObject jsonObject = new JSONObject();

                        jsonObject.put("coloum 0", col.get(0)); 

                        jsonObject.put("coloum 1", col.get(1)); 

                        jsonObject.put("coloum 2", col.get(2)); 

                        jsonObject.put("coloum 3", col.get(3));

                        jsonObject.put("coloum 4", col.get(4));

                        //jsonObject.put("coloum 5", col1.get(5)); 

                 

                        String result = "@Produces(\"application/json\") Output: \n\nArrayList Output: \n\n" + jsonObject;

                        return Response.status(200).entity(result).build();

        }

        

}

web.xml file

Code:

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">



<servlet>

<servlet-name>Jersey Web Application</servlet-name>

<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>

<load-on-startup>1</load-on-startup>

</servlet>



<servlet-mapping>

<servlet-name>Jersey Web Application</servlet-name>

<url-pattern>/crunchify/*</url-pattern>

</servlet-mapping>



<session-config>

<session-timeout>

30

</session-timeout>

</session-config>



</web-app>

PS: ithe Jersy code work very well if it tried to get the data from arraylist in independent class where no "Poi" to read excel file

for example:

Code:

package JavaBeans;



import java.util.ArrayList;



public class ArrList1 {



protected static ArrayList col1 = new ArrayList();



        

        public  void arrList() {

                col1.add(1);

                col1.add(2);

                col1.add(3);

                col1.add(4);

                col1.add(5);

                col1.add(6);

                

                //print the value of the cells which is stored in the the Arraylist

            System.out.println("");

            for (int i = 0; i < col1.size(); i++){

            Object item = col1.get(i);

            System.out.println("New Coloum " + i + " : " + item);

                    }

        }

}

heir if i injected this arraylist in the jeresy code it will works, but i need to get the data from Excel file

So any idea??