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I have a problem getting an inputed date (yyyyMMdd) from an HTML form to a sql database via a servlet. The date from the form passes to the servlet as a string but then somehow I need to convert it to date for storing in the database.
I have tried a number of methods, date formatter etc.. A possible way of doing it is to convert it to a long and then format it however this seems like a slight bodge.
Any thoughts would be appreciated.
Okay this includes the code of the form and the servlet. I have left the buisness object out.
The form:
<html>
<head>
<title>Inputing Episode Into Sons Of Anarchy Database</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body>
<h1>Add Sons Of Anarchy Episode to Database</h1>
<form name="sonsOfAnarchyForm" method="get" action="EnterpriseCWEverything\src\coursework\Servlet2.java">
<p>Season Number:
<input name="seasonNumber" type="text" id="seasonNumber">
</p>
<p>Season Episode Number:
<input name="seasonEpisodeNumber" type="text" id="seasonEpisodeNumber">
</p>
<p>Series Episode Number:
<input name="seriesEpisodeNumber" type="text" id="seriesEpisodeNumber">
</p>
<p>Episode Title:
<input name="title" type="text" id="title">
</p>
<p>Written By:
<input name="writtenBy" type="text" id="writtenBy">
</p>
<p>DirectedBy:
<input name="directedBy" type="text" id="directedBy">
</p>
<p>Original Air Date (YYYY-MM-DD):
<input name="origionalAirDate" type="text" id="origionalAirDate">
</p>
<p>Viewing Figures US (Millions):
<input name="viewingFigures" type="text" id="viewingFigures">
</p>
<p>
<input name="addEpisode" type="submit" value="Add Episode">
</p>
</form>
</body>
</html>
The Servlet: (Sorry tried using the code samle facility but for whatever reason it was not loving it.)
package coursework;
import javax.servlet.*;
import java.util.Date;
import javax.servlet.http.*;
import java.io.*;
import java.sql.*;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
public class Servlet2 extends HttpServlet
{
public void doGet (HttpServletRequest rq, HttpServletResponse rp) throws ServletException, IOException
{
rp.setContentType("text/html");
PrintWriter out = rp.getWriter();
out.println("<HTML>");
out.println("<HEAD><TITLE> Insert - Test </TITLE></HEAD>");
out.println("<BODY>");
try
{
ArrayList<Episode> episodes;
episodes = new ArrayList<Episode>();
String url = "jdbc:mysql://localhost:3306/sons_of_anarchy";
String driver = "com.mysql.jdbc.Driver";
Class.forName(driver);
Connection connection = DriverManager.getConnection(url,"root","password");
// Convert string to date
//String temp1;
//long temp;
//temp = Long.parseLong(rq.getParameter("origionalAirDate"));
//temp1 = rq.getParameter("origionalAirDate");
//Problem Code................................................
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
Date date = formatter.parse(rq.getParameter("origionalAirDate"));
//SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");
//Date date = formatter.format(rq.getParameter("origionalAirDate"));
// Set the new instance of the episode row
Episode temp;
episodes.add(temp = new Episode(Integer.parseInt(rq.getParameter("seasonNumber")), Integer.parseInt(rq.getParameter("seasonEpisodeNumber")), Integer.parseInt(rq.getParameter("seriesEpisodeNumber")), rq.getParameter("title"), rq.getParameter("directedBy"), rq.getParameter("writtenBy"), date , Float.parseFloat(rq.getParameter("viewingFigures"))));
PreparedStatement editStatement = connection.prepareStatement("INSERT into episode_guide");
// Put in database
editStatement.setInt(1, temp.getSeasonNumber());
editStatement.setInt(2, temp.getSeasonEpisodeNumber());
editStatement.setInt(3, temp.getSeriesEpisodeNumber());
editStatement.setString(4, temp.getTitle());
editStatement.setString(5, temp.getDirectedBy());
editStatement.setString(6, temp.getWrittenBy());
editStatement.setDate(7, (java.sql.Date) temp.getOrigionalAirDate());
editStatement.setFloat(8, temp.getViewingFigures());
editStatement.executeUpdate();
editStatement.close();
connection.close();
// Print out new entry
int i = 0;
while(i < episodes.size()){
out.print(episodes.get(i).getSeasonNumber()+
"\t"+ episodes.get(i).getSeasonEpisodeNumber()+
"\t"+ episodes.get(i).getSeriesEpisodeNumber() +
"\t"+ episodes.get(i).getTitle()+
"\t"+ episodes.get(i).getDirectedBy()+
"\t"+ episodes.get(i).getWrittenBy()+
"\t"+ episodes.get(i).getOrigionalAirDate()+
"\t"+ episodes.get(i).getViewingFigures());
out.print("<br>");
i++;
}
}
catch (Exception e)
{
out.println("Error" + e);
}
out.println("<H3> Basic Insert Servlet </H3>");
out.println("Result...");
out.println("</BODY></HTML>");
}
}
Sorry for the extended dribble but in context maybee it makes more sense.
646
Reading Form Data using Servlet getParameterValues() − Call this method if the parameter appears more than once and returns multiple values, for example checkbox. getParameterNames() − Call this method if you want a complete list of all parameters in the current request.
To convert String to java.util.Date, use SimpleDateFormat as answered by Gursel.
String string = "2011-03-22";
Date date = new SimpleDateFormat("yyyy-MM-dd").parse(string);
To convert java.util.Date to java.sql.Date, just use its constructor.
preparedStatement.setDate(index, new java.sql.Date(date.getTime()));
Casting ain't going to work since SimpleDateFormat doesn't return an instance of java.sql.Date.
117
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