This question already has answers here:
How to install JDBC driver in Eclipse web project without facing java.lang.ClassNotFoundexception
(13 answers)
Closed 5 years ago.
I am writing servlet to connect with mysql database using mysqlconnector java but it is giving error
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
I have tried same with core java using the same driver it is connecting to mysql and query is also running but using servlet it is not working.
my code is for servlet is:
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class RegisterServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String n = request.getParameter("userName");
String p = request.getParameter("password");
String e = request.getParameter("email");
String c = request.getParameter("course");
try {
Class.forName("com.mysql.jdbc.Driver");
Connection conn = null;
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/phpmyadmin/saiiff","root", "");
PreparedStatement ps = conn
.prepareStatement("insert into eemeze values(?,?,?,?)");
ps.setString(1, n);
ps.setString(2, p);
ps.setString(3, e);
ps.setString(4, c);
int i = ps.executeUpdate();
if (i > 0)
out.print("You are successfully registered...");
} catch (Exception e2) {
System.out.println(e2);
}
out.close();
}
}
Download the mysql jar from http://www.java2s.com/Code/JarDownload/com.mysql/com.mysql.jdbc_5.1.5.jar.zip
And Build on classpath
Related
Register.java
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
*
* #author srini
*/
#WebServlet(urlPatterns = {"/RegisterServlet"})
public class RegisterServlet extends HttpServlet {
/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code>
* methods.
*
* #param request servlet request
* #param response servlet response
* #throws ServletException if a servlet-specific error occurs
* #throws IOException if an I/O error occurs
*/
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws IOException,ServletException{
processRequset (request,response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequset (request,response);
}
#SuppressWarnings("unused")
public void processRequset(HttpServletRequest request,HttpServletResponse response)
throws IOException,ServletException{
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
String phone =request.getParameter("phone");
String username =request.getParameter("uname");
String password =request.getParameter("pass");
try{
Class.forName("com.mysql.jdbc.Driver");
Connection con=DriverManager.getConnection(
"jdbc:mysql://localhost:3306/register","root","toor");
PreparedStatement pstmt=con.prepareStatement("select * from headwy where unmae=? " );
ResultSet rs = pstmt.executeQuery();
if(rs.next()==true)
{
out.print("username already exist");
}
else {
String insertquery = "insert into headwwy (phone,uname,pass) values(?,?,?)";
pstmt.executeQuery("insertquery");
pstmt.setString(1,phone);
pstmt.setString(2,username);
pstmt.setString(3,password);
out.print("You are successfully registered...");
pstmt.close();
con.close();
}
}
catch (Exception e2) {System.out.println(e2);
}
out.close();
}
}
I am trying to check the existing data in database and insert the record.In the above try to execute it shows the blank page.
before insert command is worked but we adding the select command its not working.
using the select command for the check the database and in case any data existing the database it shows the record is already exist ,please choose the another name.
In case of no duplicate data not found,insert command perform the action and insert the new record into the database and it shows the new record in to database successfully.
But my code is not working for the properly.
thank you.
You have mistake in your code :
PreparedStatement pstmt=con.prepareStatement("select * from headwy where unmae=? " );
check your column name its "uname" not "unmae".
There are multiple issues in your code. First there is a typo. If that is the reason for failure.
select * from headwy where unmae=?
insert into headwwy (phone,uname,pass) values(?,?,?)
Also
pstmt.executeQuery("insertquery");
should be executed after you have set the parameters
pstmt.setString(1,phone);
pstmt.setString(2,username);
pstmt.setString(3,password);
I'll recommend to go through JDBC tutorial and run again.
You should set the parameters in your preparedstatement before executing your preparedstatement.
PreparedStatement pstmt=con.prepareStatement("select * from headwy where unmae=? " );
pstmt.setString(1,username);
ResultSet rs = pstmt.executeQuery();
if(rs.next())
{
System.out.print("username already exist");
}
This question already has an answer here:
jdbc to MYSQL error: No suitable driver found for jdbc:mysql://localhost:3306/test?user='root'&password='' [duplicate]
(1 answer)
Closed 7 years ago.
I've put mysql driver in .../ROOT/WEB-INF/lib and Tomcat 8.0/lib but it has no effect. I'm using the following class to connect to DB:
package db;
import java.sql.*;
public class ConnectToDB implements AutoCloseable {
Connection con;
public ConnectToDB(String server, String database, String user,
String password) throws SQLException {
con = DriverManager.getConnection("jdbc:mysql://" + server + "/"
+ database, user, password);
}
#Override
public void close() throws SQLException {
con.close();
}
public Connection getConnection() {
return con;
}
}
The following classes are included in the Eclipse project:
1. src/nr3/model
package nr3.model;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import db.ConnectToDB;
public class MusikkHandler {
private ConnectToDB db;
private Connection con;
private String tableName;
private PreparedStatement pstmtGetRows;
public MusikkHandler(String server, String database, String user,
String password) throws SQLException {
db = new ConnectToDB(server, database, user, password);
con = db.getConnection();
tableName = "album";
}
public void close() throws SQLException {
db.close();
}
public ArrayList<Album> getRows(String genre) throws SQLException {
ArrayList<Album> list = new ArrayList<Album>();
pstmtGetRows = con.prepareStatement("SELECT * FROM " + tableName
+ " WHERE SJANGER = ?");
pstmtGetRows.setString(1, genre);
ResultSet rs = pstmtGetRows.executeQuery();
while (rs.next()) {
list.add(new Album(rs.getString(1), rs.getString(2), rs.getInt(3),
rs.getInt(4), rs.getString(5)));
}
rs.close();
pstmtGetRows.close();
return list;
}
}
-
package nr3.model;
public class Album {
private String tittel;
private String artist;
private int spor;
private int utgitt;
private String sjanger;
public Album (String artist, String tittel, int spor, int utgitt, String sjanger){
setArtist(artist);
setTittel(tittel);
setUtgitt(utgitt);
setSpor(spor);
setSjanger(sjanger);
}
public Album(){
this(null, null, 0, 0, null);
}
public void setTittel(String tittel){
this.tittel = tittel;
}
public void setArtist(String artist){
this.artist = artist;
}
public void setSpor(int spor) {
this.spor = spor;
}
public void setUtgitt(int utgitt) {
this.utgitt = utgitt;
}
public void setSjanger(String sjanger) {
this.sjanger = sjanger;
}
public String getTittel() {
return tittel;
}
public String getArtist() {
return artist;
}
public int getSpor() {
return spor;
}
public int getUtgitt() {
return utgitt;
}
public String getSjanger() {
return sjanger;
}
public String toString(){
return getTittel() + " (" + getArtist() + ")" + " Utgitt: "
+ getUtgitt();
}
}
2. src/nr3/servlets
package nr3.servlets;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import nr3.model.Album;
import nr3.model.MusikkHandler;
public class MusikkValg extends HttpServlet {
private static final long serialVersionUID = 428937262021570370L;
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String genre = request.getParameter("sjanger");
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html");
PrintWriter out = response.getWriter();
MusikkHandler mh;
out.println("<html>");
out.println("<head>");
out.println("<title>Musikk</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>MUSIKK-ANBEFALINGER</h1>");
out.println("<br/>");
out.println("<br/>");
out.println("<h3>Da bør du kanskje forsøke en av disse:</h3>");
out.println("<br/>");
out.println("<br/>");
try {
mh = new MusikkHandler(" ", " ", " ", " ");
for (Album a : mh.getRows(genre))
out.println("<p>" + a + "</p>");
} catch (SQLException e) {
e.printStackTrace(out);
}
out.println("</body>");
out.println("</html>");
}
}
Update: I've got the following error stacktrace in the browser:
java.sql.SQLException: No suitable driver found for
jdbc:mysql://localhost/pg3100 at
java.sql.DriverManager.getConnection(Unknown Source) at
java.sql.DriverManager.getConnection(Unknown Source) at
db.ConnectToDB.(ConnectToDB.java:10) at
nr3.model.MusikkHandler.(MusikkHandler.java:20) at
nr3.servlets.MusikkValg.doGet(MusikkValg.java:39) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:618) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:725) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:534)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
at
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:277)
at
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2381)
at
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2370)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
First, you must register your driver at the beginning so DriverManager can user it when getting a connection. It might vary on the implementation.
DriverManager.registerDriver (new com.mysql.jdbc.Driver());
or
Class.forName("com.mysql.jdbc.Driver");
Then you can perform a getConnection() because you'll have a driver registered to be used by DriverManager.
Second: /webapps/ROOT/WEB-INF/lib is a different context and its libraries won't be available for your app unless you are setting the context path of your app as shown in this question. If you wanna add it, try placing your JDBC driver on /webapps/<yourapp>/lib first. Tomcat lib should work as well (but it's not nice when you distribute your app, might conflict with other apps deployed there, using different versions of the driver, etc.)
Third: When asking here, try to reduce your verifiable example to something readable. There's a lot of code which is not relevant to your problem. Reducing makes it easier to read your question and provide help.
i´m trying to use a endpoint to question mysql database in eclipse using tomcat 7 as server but it´s always giving me this error, does someone solved this problem with jdbi
type Exception report
message java.sql.SQLException: No suitable driver found for
jdbc:mysql://127.0.0.1/demo
The code:
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;
import org.json.JSONException;
import org.json.JSONObject;
import org.skife.jdbi.v2.DBI;
import org.skife.jdbi.v2.Handle;
#Path("/jdbiservice")
public class JdbiService {
#Path("{f}")
#GET
#Produces("application/json")
public Response convertFtoCfromInput(#PathParam("f") int f) throws JSONException {
DBI dbi = new DBI("jdbc:mysql://127.0.0.1/demo", "user", "pass");
Handle h = dbi.open();
BatchExample b = h.attach(BatchExample.class);
Something s =b.findById(f);
h.close();
JSONObject jsonObject = new JSONObject(s);
String result = jsonObject.toString();
return Response.status(200).entity(result).build();
}
}
Hi have the jar connector file on the eclipse project path and inside tomcat lib folder.
This worked for me
package com.crunchify.restjersey;
import java.util.List;
import javax.naming.InitialContext;
import javax.sql.DataSource;
import javax.ws.rs.*;
import javax.ws.rs.core.Response;
import org.json.*;
import org.skife.jdbi.v2.*;
#Path("/sensorservice")
public class SensorService {
#Path("{id}")
#DELETE
public Response deleteSensorById(#PathParam("id") int id) {
///...
try {
DBI dbi = new DBI(SensorService.getDataSource());
Handle h = dbi.open();
SensorInterface si = h.attach(SensorInterface.class);
si.deleteById(id);;
h.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String result = "Deleted";
return Response.status(200).entity(result).build();
}
private static DataSource getDataSource (){
DataSource ds = null;
InitialContext contex;
try {
contex = new InitialContext();
ds = ( DataSource) contex.lookup("java:comp/env/jdbc/jndiname");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return ds;
}
}
at webinf/webxml
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/mysql</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
on tomcat context file
<Resource
name = "jdbc/jndiname"
auth = "Container"
type = "javax.sql.DataSource"
maxActive ="100"
maxIdle = "30"
maxWait = "10000"
driverClassName = "com.mysql.jdbc.Driver"
url = "jdbc:mysql://localhost:3306/schema"
username = "user"
password = "pass"
/>
You should include the mysql driver in your dependencies.
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
The Solution:
I added this code
Class.forName("com.mysql.jdbc.Driver");
brfore
Connection con = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/test", "root", "root");
Thank you all for reply my question
====================
I have problem, I try to insert data into mysql db using servlet, but I couldn'y access to MySQL
Database name: test
Table name: test
I already added jdbc connector to the project library
I'm using JDK 1.7, NetBeans 7.3, MySQL 5.6, Tomcat 7.0, Connector/J 5.1.24
1- this is "form action" in sign_up.jsp page:
<form action="RegisterUser" method="post">
<td><input type="submit" value="Submit"></td>
</form>
2- this is RegisterUser.java servlet:
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.mysql.jdbc.Driver;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;
#WebServlet(urlPatterns = {"/RegisterUser"})
public class RegisterUser extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException, SQLException {
try{
Connection con = DriverManager.getConnection("jdbc:mysql://localhost/test", "root", "root");
Statement s = (Statement) con.createStatement();
String name = "Hassan3";
int phone = 123456;
String insert = "INSERT INTO test VALUES ('\" + name + \"', \" + phone + \")";
s.executeUpdate(insert);
s.close();
con.close();
}catch(Exception e){
throw new SecurityException("Class not found " + e.toString());
}
}
#Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
processRequest(request, response);
} catch (SQLException ex) {
Logger.getLogger(RegisterUser.class.getName()).log(Level.SEVERE, null, ex);
}
}
#Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
processRequest(request, response);
} catch (SQLException ex) {
Logger.getLogger(RegisterUser.class.getName()).log(Level.SEVERE, null, ex);
}
}
#Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}
3- the exception result:
HTTP Status 500 - Class not found java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost/test
type Exception report
message Class not found java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost/test
description The server encountered an internal error that prevented it from fulfilling this request.
exception
java.lang.SecurityException: Class not found java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost/test
RegisterUser.processRequest(RegisterUser.java:66)
RegisterUser.doPost(RegisterUser.java:173)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.39 logs.
4- But when I use same code but in java file "without servlet or web app" it's working correctly:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
public class Test {
public static void main(String[] args){
try{
Connection con = DriverManager.getConnection("jdbc:mysql://localhost/test", "root", "root");
Statement s = (Statement) con.createStatement();
String name = "Hassan4";
int phone = 8985895;
String insert = "INSERT INTO test VALUES ('" + name + "', " + phone + ")";
s.executeUpdate(insert);
s.close();
con.close();
System.out.println("done");
}catch(Exception e){
throw new SecurityException("Class not found " + e.toString());
}
}
}
so what is problem with servlet? Why the code works with java app. but it doesn't work with web app.?
You are getting Class not found java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost/test
It means When you are running it from Web Application, JRE could not find Class in the Classpath.
If this code works in your Standalone it means you need to have a JAR file somewhere containing com.mysql.jdbc.Driver class (so called JDBC driver). This JAR needs to be visible in Tomcat. So, I would suggest placing mysql-jdbc.jar at a physical location to /WEB-INF/lib directory of your project.
Alternatively, you can add Third party libraries like JDBC driver here using
Right Click Project Name--> Properties
from your NetBeans IDE
Then restarting Tomcat should work.
Second, you don't need
import com.mysql.jdbc.Driver;
in your Servlet.
David is right and i want to add, you can also install the driver by pasting the jar file in the the installation folder of java.
\Program Files\Java\jre7\lib\ext
Well i dont like mysql very much and always use Mssql with a windows server 2008. This is the code i use for that, i might be your answer since mysql connection works pretty much the same as sql.
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
conn = DriverManager.getConnection("jdbc:sqlserver://localhost:1433;databaseName="+database+";user="+user+";password="+password);
First, you should put that into a persistance layer.
1) Ensure that your JDBC driver is in place. Copy it into your classpath, e.g. /WEB-INF/lib directory. Link: MySQL JDBC Driver Download Page
2) Check your connect string: jdbc:mysql://<server>:<port>/<database>, looks like the port is missing. Try jdbc:mysql://127.0.0.1:3306/test
I just discovered OpenShift and i love it! And i would like to try it with a tomcat app that communicates with mysql.I was able to install tomcat through this tutorial
and my tomcat server is up and running !I also installed mysql and phpmyadmin,but now i have to deploy my servlet in the tomcat server .My servlet communicates with mysql but i cant find where to insert the variables that Openshift give me !Does anyone have any idea?
Thnx in advandce Andi :)
OPENSHIFT VARIABLES ARE:
Root User :andi
RootPassword: andi
Connection URL: mysql://$OPENSHIFT_MYSQL_DB_HOST:$OPENSHIFT_MYSQL_DB_PORT/
MY SERVLET:
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.mysql.jdbc.Connection;
import com.mysql.jdbc.PreparedStatement;
#WebServlet("/HelloWorldServlet")
public class HelloWorldServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public HelloWorldServlet() {
super();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String titulli = request.getParameter("titulli");
String ingredientet = request.getParameter("ingredientet");
String receta = request.getParameter("receta");
final String url = "jdbc:mysql://localhost/andi";
final String user = "andi";
final String password = "andi";
try {
// jdbc try
Class.forName("com.mysql.jdbc.Driver");
Connection con = (Connection) DriverManager.getConnection(url, user,
password);
// insert values into the first table
PreparedStatement s = (PreparedStatement) con
.prepareStatement("INSERT INTO recetat(titulli,ingredientet,receta) VALUES (?,?,?)");
s.setString(1, titulli);
s.setString(2, ingredientet);
s.setString(3, receta);
s.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
PrintWriter out = response.getWriter();
out.println("Receta u ruajt me sukses ne server !");
System.out.println(titulli+ingredientet+receta);
}
}
like you can see i dont know where to insert the
Connection URL: mysql://$OPENSHIFT_MYSQL_DB_HOST:$OPENSHIFT_MYSQL_DB_PORT/
variable...
OpenShift puts the MySQL host and port as environment variables on exactly that name. In Java terms, they are available by
String host = System.getenv("OPENSHIFT_MYSQL_DB_HOST");
String port = System.getenv("OPENSHIFT_MYSQL_DB_PORT");
Then, compose the JDBC URL as follows
String url = String.format("jdbc:mysql://%s:%s/andi", host, port);
The normal approach, however, is to create a connection pooled datasource in context.xml and obtain that by JNDI instead.
Somewhat related - you can now install tomcat directly (without following the DIY steps) but running
rhc app create <name> jbossews-1.0
JBoss EWS is a maintained and supported version of Tomcat from Red Hat - all the same bits. Also, starting next week the rhc client tools will support
rhc app create <name> tomcat6
To make it even simpler.