• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

write userdefined method into HttpServlet.

 
Greenhorn
Posts: 21
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
hi,
i have a doubt that how to write a user defined method inside the doPost method in HttpServlet.\
i hereby enclosed my code for easy understanding.
thanks...


/*
* Created on Feb 8, 2006
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/
package analyserQuery;

import javax.servlet.http.HttpServlet;

import java.io.IOException;
import java.io.PrintWriter;
import oracle.jdbc.OracleResultSetMetaData;

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





/**
* Servlet Class
*
* @web.servlet name="QueryAnalyser"
* display-name="Name for QueryAnalyser"
* description="Description for QueryAnalyser"
* @web.servlet-mapping url-pattern="/QueryAnalyser"
* @web.servlet-init-param name="A parameter"
* value="A value"
*/
public class QueryAnalyser extends HttpServlet
{
public void rdesc(HttpServletRequest req,HttpServletResponse res)
{
/*java.sql.ResultSet res=null;




java.sql.ResultSetMetaData res1=null;

OracleResultSetMetaData rmd=(OracleResultSetMetaData)res.getMetaData();
int columnCount=rmd.getColumnCount();

out.println("Total Number of Columns:"+columnCount+"<br>");
out.println("<html><body><table><tr><td>Coulmn Name:</td>");
out.println("<td>Coulmn Type:</td>");
out.println("<td>Coulmn Size:</td></tr>");
for(int i=1;i<=columnCount;i++)
{
String colname=rmd.getColumnName(i);
String coltype=rmd.getColumnTypeName(i);
if(coltype=="DATE")
{
colsize=rmd.getColumnDisplaySize(i);
}
else
colsize=rmd.getPrecision(i);
//int noofrows=rmd.getPrecision(i);
//int dates=rmd.getColumnDisplaySize(i);
out.println("<tr><td>"+colname+"</td>");
out.println("<td>"+coltype+"</td>");
out.println("<td>"+colsize+"</td>");

}
out.println("</table></body></html>");*/

}

public void doPost(
HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException
{


String Employeenumber=null;
response.setContentType("text/html");
PrintWriter out=response.getWriter();
String uname=request.getParameter("username");

validatorBean bean=new validatorBean();
bean.setUsername(request.getParameter("username"));
bean.setPassword(request.getParameter("password"));
bean.setHost(request.getParameter("host"));
String query=request.getParameter("query");
int colsize;
try
{
bean.dbConnect();
public void rdesc(request,response);
java.sql.ResultSet res=null;

java.sql.Statement st=bean.con.createStatement();
res=st.executeQuery(query);


java.sql.ResultSetMetaData res1=null;

OracleResultSetMetaData rmd=(OracleResultSetMetaData)res.getMetaData();
int columnCount=rmd.getColumnCount();

out.println("Total Number of Columns:"+columnCount+"<br>");
out.println("<html><body><table><tr><td>Coulmn Name:</td>");
out.println("<td>Coulmn Type:</td>");
out.println("<td>Coulmn Size:</td></tr>");
for(int i=1;i<=columnCount;i++)
{
String colname=rmd.getColumnName(i);
String coltype=rmd.getColumnTypeName(i);
if(coltype=="DATE")
{
colsize=rmd.getColumnDisplaySize(i);
}
else
colsize=rmd.getPrecision(i);
//int noofrows=rmd.getPrecision(i);
//int dates=rmd.getColumnDisplaySize(i);
out.println("<tr><td>"+colname+"</td>");
out.println("<td>"+coltype+"</td>");
out.println("<td>"+colsize+"</td>");

}
out.println("</table></body></html>");

}catch(Exception e)
{
out.println(e.getMessage());
}
}//end dopost method
/*public void rdesc()
{
java.sql.ResultSet res=null;




java.sql.ResultSetMetaData res1=null;

OracleResultSetMetaData rmd=(OracleResultSetMetaData)res.getMetaData();
int columnCount=rmd.getColumnCount();

out.println("Total Number of Columns:"+columnCount+"<br>");
out.println("<html><body><table><tr><td>Coulmn Name:</td>");
out.println("<td>Coulmn Type:</td>");
out.println("<td>Coulmn Size:</td></tr>");
for(int i=1;i<=columnCount;i++)
{
String colname=rmd.getColumnName(i);
String coltype=rmd.getColumnTypeName(i);
if(coltype=="DATE")
{
colsize=rmd.getColumnDisplaySize(i);
}
else
colsize=rmd.getPrecision(i);
//int noofrows=rmd.getPrecision(i);
//int dates=rmd.getColumnDisplaySize(i);
out.println("<tr><td>"+colname+"</td>");
out.println("<td>"+coltype+"</td>");
out.println("<td>"+colsize+"</td>");

}
out.println("</table></body></html>");


}*/ //methiod redesc ends




}//servlest ends here
 
Sheriff
Posts: 14691
16
Eclipse IDE VI Editor Ubuntu
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
What is your doubt ?
You did not pass "out" to your method.
 
Sheriff
Posts: 13411
Firefox Browser VI Editor Redhat
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
mohamed,

Javaranch tip:
If you are going to post more than a line or two of your code, wrap that
code in a set of UBB Code tags.
Doing so will help to preserve your code's indenting, making it easier to read.
If it is easier to read, more people will actaully read it and you will
stand a better chance of getting help with your question.
 
reply
    Bookmark Topic Watch Topic
  • New Topic