Salesforce Workbench Express

I developed a Express version of Salesforce Workbench:

package com.thysmichels;

import java.io.IOException;
import javax.servlet.http.*;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.http.*;
import java.util.logging.*;
import com.sforce.ws.*;
import com.sforce.soap.partner.*;
import com.sforce.soap.partner.sobject.SObject;


@SuppressWarnings("serial")
public class SalesforceGoogleAppServlet extends HttpServlet {
		private static final Logger log = Logger.getLogger(SalesforceGoogleAppServlet.class.getName());
		private static String copytablestr;
		private String username = "username";
		private String password = "passwordsecuritytoken";
		private PartnerConnection connection;
		
		public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
				
			resp.setContentType("text/html");
			PrintWriter t = resp.getWriter();   
			t.println("");
			t.println("");
			resp.getWriter().println("*** Welcome to Salesforce WorkBench Express ***" + "
");
			
			getForceConnection( t, req);
			if ( connection == null ) { return; }
			QueryResult result = null;
			try {
				DescribeGlobalResult describeGlobalResult = connection.describeGlobal();
		    	DescribeGlobalSObjectResult[] sobjectResults = describeGlobalResult.getSobjects();
				//result = connection.query("Select id, name, phone from Account order by LastModifiedDate desc limit 10 ");
		    	t.println("");
		    	t.println("");
		    	t.println("");
				for (int i = 0; i < sobjectResults.length; i++)
				{
					t.println("" + sobjectResults[i].getName() + ""); 
				}
				t.println("" + "
");
				t.println("");
				t.println("");
				//t.println("item 1item 2item 3item 4All");
			} catch (ConnectionException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException
		{
			try
			{
				resp.setContentType("text/html");
				PrintWriter t = resp.getWriter();
				String str= req.getParameter("slt");
				if (str != null)
				{
					DescribeSObjectResult describeSObjectResult = connection.describeSObject(str);
					if (describeSObjectResult != null) 
					{
						t.println("*** Fields from Object : " + str + " *** 
");
						copytablestr = str;
						Field[] fields = describeSObjectResult.getFields();
						t.println("");
						t.println("");
						for (int k = 0; k < fields.length; k++) 
						{
							t.println("" + fields[k].getName() + "");
						}
						t.println("");
						t.println("");
					}
				}
				
				String field[]= req.getParameterValues("fieldselect");
				if (field != null)
				{
					t.println(""); 
					t.println("");
					String strconcat = "";
						for (int k=0; k < field.length; k++)
						{
							if (k==0)
							{
								
								strconcat += field[k];
								t.println("");
							}
							else
							{
								strconcat += "," + field[k];
								t.println("");
							}
						}
						t.println("");
						String QueryStr = "SELECT " + strconcat + " FROM " + copytablestr;
						QueryResult queryResults = connection.query(QueryStr);
							
							if (queryResults.getSize() > 0) 
						      {
						        for (SObject s: queryResults.getRecords()) 
						        {
						        	t.print("");
						        	for (int col=0; col < field.length; col++)
						        	{
						              t.print("");
						        	}
						        	t.print("");
						        }
						      }
							t.println("
" + field[k] + "
" + field[k] + "
" + s.getField(field[col]) + "
");
				}
			}
			catch(ConnectionException e)
			{
				e.printStackTrace();
			}
		}
		
		void getForceConnection(PrintWriter out, HttpServletRequest req)  { 
			
			try { 
				// build up a ConnectorConfig from a sid
				String sessionid = req.getParameter("sid");
				String serverurl = req.getParameter("srv");
				
				if ( connection == null ) { 
					
				   // login to the Force.com Platform
				   ConnectorConfig config = new ConnectorConfig();
				   if ( sessionid != null && serverurl != null) {
					   config.setServiceEndpoint(serverurl);
					   config.setSessionId(sessionid);
					   config.setManualLogin(false);
				   }   else { 
					   config.setUsername(username);
					   config.setPassword(password);
				   }
				   connection = Connector.newConnection(config);
			   } 
			   log.warning("Connection SID " +connection.getConfig().getSessionId());

			} catch ( ConnectionException ce) {
				log.warning("ConnectionException " +ce.getMessage());
				
				out.println( ce.getMessage() + " s " + ce.getClass() );

			}
				
		}
}

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