|
I'm trying to connect to MySQL with the code below and I keep getting the error at the bottom. Any ideas? Code: try { String url = "jdbc:mysql://localhost/TestSetTracker"; Class.forName( "org.gjt.mm.mysql.Driver" ).newInstance(); dbconn = DriverManager.getConnection( url ); } catch ( ClassNotFoundException cnfex ) { cnfex.printStackTrace(); cnfex.toString(); } catch ( SQLException sqlex ) { sqlex.printStackTrace(); sqlex.toString(); } catch ( Exception excp ) { ... |
Hi I have an applet that connects to the MySQL database to validate the user. The database is in a PC that has the web server. In other words, the applet and the database are in the same PC (say PC1). 1. Appletviewer works fine. 2. When I access the database from a pc's browser that has the network connection to ... |
|
|
|
hey guys, here is the deal: I am a student, who is tryin to learn java. If there is a good tutorial some where,just post a link and I will be glad to RTFM. I am trying to connect to a mySql database from tomcat, but get the following error message: type Exception report message Internal Server Error description The server ... |
|
Hi, I want to connect to a mySQL database. mySQL has a database with a table for the users, whose have access to mySQL. I created a database for my program with a table for the content and a table for allowed users. If I connect, I have to use the user and password from the mySQL user table. I have ... |
|
|
|
Yes there is my.ini or my.cnf that you can go and make changes to. This file is in your windows or winnt folder. The mysql/winmysqladmin.exe will also let you modify it. Also confirm if you are using the right userID and password. I just spent the entire day today getting the initail set up for mysql working. Let me know if ... |
|
hey all, im just editing this , cos ive got some of it working, now when i type in javap com.mysql.jdbc.Driver i get this, is this correct? C:\>c:\j2sdk1.4.2_03\bin\javap com.mysql.jdbc.Driver Compiled from "Driver.java" public class com.mysql.jdbc.Driver extends com.mysql.jdbc.NonRegisteringDriver{ public com.mysql.jdbc.Driver(); throws java/sql/SQLException static {}; } Ive wrote a small program to connect to a database with the line con = DriverManager.getConnection"jdbc:mysql:C:\\mysql\\data\\login", "tock","tick"); ... |
Hi, As a part of project i wrote the code to connect to mysql using java.In my system it is working fine.but when i tried on the server(even as root also) i am getting an error message.I am not able to sort out the what the problem could be..? mycode is { ................................... try { Class.forName("com.mysql.jdbc.Driver").newInstance(); }catch (Exception E) { System.err.println("CONCEPT: ... |
i'm very new to this and i used an app that inserts trivial data into a mysql db - and works fine. now, i've two pcs connected in a network and i changed the localhost to host name and used the app from the client... and worked too... yesterday. But today it doesnt i checked the network, the firewall and the ... |
import java.sql.*; public class Database { public static void main(String args[]) { try { /* Test loading driver */ String driver = "com.mysql.jdbc.Driver"; System.out.println( "\n=> loading driver:" ); Class.forName( driver ).newInstance(); System.out.println( "OK" ); /* Test the connection */ String url = "jdbc:mysql://localhost/test"; System.out.println( "\n=> connecting:" ); DriverManager.getConnection( url, "", "" ); System.out.println( "OK" ); } catch( Exception x ) { ... |
With Mysql, each 'login' also requires permission to connect from a location. ie you don't login to a user, you login to a 'user at a location'. By default the only user is root@localhost. You need to login to MySQL and run the following: grant all on .* to root@'192.168.1.251' identified by 'welcome'; (replace the part with the actual schema ... |
|
Originally posted by Raghavan Chockalingam: I earlier tried to connect to mysql from JSP it failed so now I am trying to connect from Java but here is the error it comes up with... C:\java\Trial>javac createtable.java createtable.java:8: cannot find symbol symbol : method DriverManager(java.lang.String) location: class CreateTable con = DriverManager("jdbc:mysql://localhost/new_db?user=root&pass word=demoPassword"); ^ createtable.java:9: cannot find symbol symbol : method createConnection() location: ... |
|
this is my method to connect: public void getConnected(String url) { try { //Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); // Class.forName("com.mysql.jdbc.Driver"); Class.forName("org.gjt.mm.mysql.Driver"); }catch (java.lang.ClassNotFoundException e){ System.err.print("ClassNotFoundException:"); // System.err.println(e.getMessage()); } try { //con = DriverManager.getConnection (url); con = DriverManager.getConnection("jdbc:mysql://localhost:3306/coba", "", ""); stmt=con.createStatement(); dmd = con.getMetaData(); }catch(SQLException e) { // e.toString(); System.err.print("Error nih"); } } and this is error message that appear in log: ClassNotFoundException:Error nihFeb 15, 2006 ... |
|
|
This sounds like a good idea, except there's only one problem: To use JNDI, you have to have a server that supports JNDI running or your JNDI lookup will fail. This means you're making your stand-alone java application so that it won't run unless a JNDI server is running. Not such a good idea. With some good OO-Design, it's not that ... |
|
|
It looks confusing because there is a separation between the driver and connection when first connecting to a database. This ends up being very useful in the long run since it helps write code which is independent of the database, but that doesn't help the initial confusion. To connect to a database (in general) you need these things: 1) The fully ... |
|
|
|
|
Hi all, i have a mysql database version 4.0 runing on port 3306 and i installed another version from mysql 5.0 runing on port 3308. the problem is, when i trying to connect on mysql version 5 on port 3308 i face the error something like : "java.sql.SQLException: Communication failure during handshake. Is there a server running on localhost:3308?" and i ... |
|
Hi, I am close to the stage of growing some hair on my bold head and then ripping them out. I really can't figure out what is going on, but the situation is like this: 1) MySQL server #1 is located on the remote machine (Version 4.0.24); 2) MySQL server #2 is located on my local machine (Version 5.1.11); 3) Servers ... |
|
|
Hello Everyone, I am quite new in using JDBC, I know this question is repeated but as i couldn't solve problem so writing you for help. I am running this program in eclipse with Windows vista and MySQL and receiving this error "Cannot connect to database serverjava.lang.ClassNotFoundException: com.mysql.jdbc.Driver" package MySQLDB; import java.sql.*; public class Connect { public static void main (String[] ... |
It's probably something simple that im missing but I cant figure out how to start the connection. I have the mysql-connector-java-####-bin in the same directory I am running the code from but it generates an error saying class not found on the line with Class.forname() when I try to start up the driver so that I can make a connection. Any ... |
Hi All, In the oracle we had the option to populate the records in tree structure manner using the connect by prior clause , Is it possible to achieve the same using the MySql 6.0.6 or else we will define only the stored procedures or will MySql have any reserved functions. Example : RootA - SubRootA - SubRootAA - SubRootB - ... |
hello again, I copied the following code for database connection. import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class TestClassForNameApp { public static void main(String args[]) { try { Class.forName("oracle.jdbc.driver.OracleDriver"); } catch (ClassNotFoundException e) { System.out.println("Oops! Can't find class oracle.jdbc.driver.OracleDriver"); System.exit(1); } Connection conn = null; Statement stmt = null; ResultSet rset = null; try { conn = ... |
Hello, I am trying to insert values from a .csv file into a MySQL database from a GUI. I cannot seem to accomplish this. I keep getting a null pointer exception where I set the connection properties in my main method. I also cannot seem to figure out how to use the importData() method after setting my variables in my GUI. ... |
Hi there, I'm hoping someone can help me, I'm just going round in circles. I have webhosting, my site url is www.ABC.co.uk for example. I'm able to connect to the MySql on the server with php using: mysql_connect("localhost", "USER_NAME", "PASS_WORD") or die(mysql_error()); mysql_select_db("colinjava") or die(mysql_error()); Note that the php page is on the same server. Now what I'm trying to do ... |
Hi everyone, Apologies if this question is asked a lot (I have used the search but couldn't find anything!) I'm trying to connect to a mySQL database using the following code, but I keep getting a ClassNotFoundException: com.mysql.jdbc.Driver error. I think it may be a problem with the mysql connector needing to be in the classpath, but as I intend to ... |
Note that it's not a good practice to mix Java/JDBC code and JSP. The JDBC should be in a servlet (or class called from a servlet) and then forward to a JSP. It is harder to develop, troubleshoot, maintain and reuse code in a JSP. Which wil negatively impact getting it working. In any case, what error do you get when ... |
Now it is working. and I am able to connect my database. The problem is that I was trying to connect my database server from my local development system. Thats why it was not able to connect due to the firewall issues in server. But I have created a new jsp page with connection scriptlets and run that in my webserver. ... |
Hello everyone, I've installed the MySQL (5.1.38 ) here in mine Windows Vista 64bits, added the Connector of the MySQL (mysql-connector-java-5.1.8-bin.jar) to the buildpath of my project but occured the following problem when I've try to connect with the MySQL but the following error quoted below appears: Conectando ao banco Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent ... |
import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; public class MySql { public static void main(String args[]) throws Exception { Connection con = null; try { Class.forName("com.mysql.jdbc.Driver").newInstance(); con = DriverManager.getConnection("jdbc:mysql://localhost/", "root", "root"); if(!con.isClosed()) System.out.println("Successfully connected to " + "MySQL server using TCP/IP..."); } catch(Exception e) { System.err.println("Exception: " + e.getMessage()); } finally { try { if(con != null) con.close(); } catch(SQLException e) {} ... |
|
Hi, Think you are doing well. I am a beginner in java. So, i faced a problem now. can you please help? I am trying to connect with mysql using connector/j(latest). I use: 1] mysql connector/j 2] mysql 5.1(It was installed automatically when i am installing xampp) 3] java 6 4] eclipse gallilio for JEE developers. What i do: 1]at first ... |
Hello! I relatively new to Java, and am currently working on a project, for which I would like to be able to connect to an online mySQL database. One that's being hosted somewhere ... else. For days, I have been trying to figure out why it won't work. I have tried countless tutorials on J/Connector, and they all come up with ... |
|
Hello, I am trying to connect to mysql database using eclipse. I already added MySQL JDBC Driver to the libraries folder in eclipse. Here is the code: package listeners; import javax.servlet.ServletContextEvent; import javax.servlet.ServletContextListener; import javax.sql.*; import java.sql.*; /** * Application Lifecycle Listener implementation class DBConnector * */ public class DBConnector implements ServletContextListener { /** * Default constructor. */ public DBConnector() { ... |
I am unable to make connection using Connector/ODBC I am entering the following values DATA SOURCE NAME: Hiteshmysql DESCRIPTION: mysqlconnection TCP/IP SERVER: localhost PORT: 3306 USER: root PASSWORD: root DATABASE: Is it necessary to select databse from list? I don't get any any name here to select database so leave it blank. When I click on TEST then it gives me ... |
Hello, Im trying to do this: I have application connecting and getting data from Mysql database. And i have problem to do this: UPDATE table_name SET field_name1 =valueX WHERE field_name2 Ok, it works, but only if there is field_name2 with valueX So when there isnt i would execute new statement with INSERT. I know how to get data from mysql and ... |
i have mysql installed on my machine and also i have set it up in my ide which is netbeans i have trying to perform simple databse operation like follows public class DataBaseDemo { /** * @param args the command line arguments */ public static void main(String[] args) { // TODO code application logic here try { Class.forName("Sun.jdbc.odbc.jdbcodbcDriver"); Connection con = ... |
|
Hi, I am just checking out java studio creator, and it certainly looks sweet. up until now i have been doing everything from scratch with php/ajax. this is clearly going to help me a lot. I do have a database question. I am on a shared server which does have apache tomcat installed. What I do not have is root access ... |
I am currently working under fedora core 4. I have created a database called root in mysql. I was trying to connect to database using jdbc but i get so many errors. I have checked de classpath and it is perfect. the source code is as follows String driver = "com.mysql.jdbc.Driver"; System.out.println( "=> loading driver:" ); Class.forName( driver ); System.out.println( "OK" ... |
assuming that ...your MySQl installation is working ...you have created suitable userid & passwords ...you have GRANTed suitable access ...you have downloaded a suitable JAVA ODBS driver ,all of which chold have happened at installation probably best to ask this in the java forum, as its not actually a mySQL question its more of a Java question |
I am working on a Java Web Application project using JDeveloper while connecting to a mySQL database (3.23.52-nt). My application works fine up until the 30th connection. After the 30th, I receive the following error message: =========================================== (org.gjt.mm.mysql.Driver error message): Cannot connect to MySQL server on localhost:3306. Is there a MySQL server running on the machine/port you are trying to connect ... |
Connecting to MySQL When i try to connect to MySQL, i cannot do it . The message in log file MyServe.err is: Number of processes running now: 0 040227 13:25:04 mysqld restarted 040227 13:25:04 InnoDB: Started /usr/local/libexec/mysqld: ready for connections. Version: '4.0.15-log' socket: '/tmp/mysql.sock' port: 3306 I connect from java file: import java.sql.*; public class CoreConnect{ public static void main(String[] args){ ... |
I am beginner to this field ,i need suggestions from you to complete my task. I want to connect to mysql db server through my localhost(PC) to remote server. The steps i have followed to connect db server. Step 1: I have installed jdk 1.6.29 version in my PC and also JDBC driver(mysql-connector-java-5.1.18) using windows XP3 pack Step 2: Set the ... |
Dear Members, I have Eclipse 3.4 on my Windows host. I have also installed Tomcat 6 and mysql-connector-java-5.1.7.jar on this host. I am trying to connect to MySQL (3.23.52) on a HP-UX box. I have access to the database as root on the unix host and as a user from this remote windows host. I created the appropriate context.xml and also ... |
import java.sql.*; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class websiteurlJDBCtest { public static void main(String[] args) throws Exception { websiteurlJDBCtest.useConnection(); } public static void useConnection() throws Exception { Class.forName("com.mysql.jdbc.Driver"); String URL = "jdbc:mysql://websiteurl.com:3306/"; System.out.println(URL); String Database = "testDATABASE"; String UserName = "myTESTusername@websiteurl.com"; String Password = "myTESTpassword"; Connection conn = null; // connection object Statement stmt = ... |
Dear friends, I am Kranthi. I am new to java programming. I am having the following problem. Can any one of you help me..?? I am using Xamplite 1.7.2 My Xampp is running on IP: 192.168.1.16 and port: 3306 in our office network. I have written one java program in order to connect to the IP: 192.168.1.15:3306 I am have written ... |
|
import java.sql.*; public class MysqlConnect{ public static void main(String[] args) { System.out.println("MySQL Connect Example."); Connection conn = null; String url = "jdbc:mysql://localhost:3306/"; String dbName = "nik"; String driver = "com.mysql.jdbc.Driver"; String userName = "root"; String password = "ranvir"; try { Class.forName(driver).newInstance(); conn = DriverManager.getConnection(url+dbName,userName,password); System.out.println("Connected to the database"); conn.close(); System.out.println("Disconnected from database"); } catch (Exception e) { } } } |
Hi everyone! I've been trying to connect to a MySQL server that I have at 1&1 Hosting. The problems is that I can't connect to it using Java. It works with my WordPress but I cannot access it using Java. Java Code: import java.sql.*; public class Main { static String bd = "dbname"; static String login = "username"; static String password ... |
Upon insallaion of mySql on your server did you set the username root to be able to log in using other computer aside from the machine where the MySql is installed? Also, base on what you post your code must return an error message, kindly paste it here so we can help you more. |
com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.net.ConnectException MESSAGE: Connection timed out: connect STACKTRACE: java.net.ConnectException: Connection timed out: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(Unknown Source) at java.net.PlainSocketImpl.connectToAddress(Unknown Source) at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.(Unknown Source) at java.net.Socket.(Unknown Source) at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:256) at com.mysql.jdbc.MysqlIO.(MysqlIO.java:271) at com.mysql.jdbc.Connection.createNewIO(Connection.java:2771) at com.mysql.jdbc.Connection.(Connection.java:1555) at ... |
Hello and Good day to every one, I am trying to build a DB based application that will validate login ID of users. The application will Ask the user to input his "username" and "password" Check the existence of this user in the Data Base If exists, Retrieve his first name and last name from the DB and display them If ... |
Hi all this thread is for beginners like me..just want to share the code which i tried out.. import java.io.*; import java.sql.*; class Sample { public static void main(String ds[]) { Connection con=null; Statement st=null; ResultSet rs=null; String FirstName=""; try { Class.forName("com.mysql.jdbc.Driver").newInstance (); con=DriverManager.getConnection("jdbc:mysql://localhost:3306/yourdatabasename?","root","password?"); st=con.createStatement() ; rs=st.executeQuery("SELECT fieldname? FROM yourTablename?") ; while(rs.next()) { FirstName=rs.getString(1); System.out.println(fieldname); } } catch(Exception eer) { System.out.println(eer.toString()); ... |
<%@page contentType="text/html"%> <%@page pageEncoding="UTF-8"%> <%@page import="java.sql.Connection, java.sql.DriverManager, java.sql.SQLException" %> <% Connection con = null; out.println("coming here..."); try { Class.forName("com.mysql.jdbc.Driver").newInstance (); con = DriverManager.getConnection("jdbc:mysql:///ebusiness","root", "nbuser"); if(!con.isClosed()) { out.println("Successfully connected to " +"MySQL server using TCP/IP..."); } }catch(SQLException e) { e.printStackTrace(); } catch(Exception ex) { out.println("Exception: " + ex.getMessage()); } finally { try { if(con != null) con.close(); } catch(SQLException e) { out.println("Exception: ... |
|
|
Hi All Below is my code for a simple form which connects to Mysql. Problem is if I just connect to database and not have any other code (i.e Form) that works fine but when I try to connect with the form code, it gives me errors. why??? some help will be greatly appreciated thank you. Zed code Java Code: import ... |
Hi Guys. I'm a complete beginner using Java. I've created a database called NLP_test with a table called customer im using Eclipse to try connecting to the DB with the following code (p.s i've looked around the net and compiled this from bits and bobs to try but had no joy.) import java.sql.*; import javax.sql.*; public class JDBCDemo String Url = ... |
|
|
public static void main(String args[]) { try { /* Test loading driver */ String driver = "com.mysql.jdbc.Driver"; System.out.println( "=> loading driver:" ); Class.forName( driver ); System.out.println( "OK" ); /* Test the connection */ String url = "jdbc:mysql://localhost:3306/test1?user=shani&password=mypass"; System.out.println( "=> connecting:" ); DriverManager.getConnection(url); System.out.println( "OK" ); } catch( Exception x ) { x.printStackTrace(); } } /** * @param args the command line ... |
I am investigating a webhosting project. It previously had an MSSQL database which I successfully converted to MYSQL. There must be a connection to the database in the files somewhere - can anyone give me an idea where I might find them? The name of the database has changed and there must be a password that will also have to be ... |
|
|
|
Hallo. I have to connect to MySql database. I've downloaded JDBC driver, and, using Eclipse, all works fine, i'm able to connect to database. But now i need to create Java Applet. I do not use any IDE, use javac and appletwier from console, and now when i try to connect to MySql Database, i recieve error: ClassNotFoundException Seems what JDBC ... |
|
1) download mysql connector/J JDBC driver from mysql.com 2) put the driver jar somewhere where you can put it in the classpath of your application 3) use proper setup code to connect to the database (search google, tons of examples) If at any step you have no clue what I am talking about, you need a good book to help you ... |
|
hey folks ... I am pretty new to java world and I working on project called time reporting .. mostly in offices after the end of the day staff use to report . my apps is something like that .. its only a school project . My probelm is that I have never work with java before mostly worked with php ... |
|
While I'm trying to connect with stored procedure in mysql via my program, the following compile time errors are comming. For that i have given permission to that stored procedure like grant execute on procedure test_new.SEL_PRO to root@localhost; test_new--------->DB Name SEL_PRO-------->Procedure name Stll now the same error is comming java.sql.SQLException: User does not have access to metadata required to determine stored ... |
|
Place the MySQL Driver jarfile in your classpath (and don't say it is, because it's not). And use com.jdbc.mysql.Driver (or is it com.mysql.jdbc.Driver, it's one of the two, and I don't feel like looking up which one at the moment), not org.gjt.mm.mysql.Driver as that Driver is deprecated and is only still around for backwards compatability. |
Hi i need to get The code Snippet for connecting to MySQL from Eclipse Programmatically, cause MY DSN doesnot show a mySql(SUN) driver only a SQL Server (MIcrosoft) driver so i am Stuck ....Help mySQL server is running on PORT 3306 uname-root password-password i even have a mySQl Connector plugin from eclipse but that doesnot help... urgent |
|
Hey My webserver host dont share the ips of the MySQL server so the only way to access it is via a browser where i can use phpmyadmin or via a PHP script that i upload to the webserver. My quesstion is: Is it possible for JAVA to connect to the MySQL server through the PHP script on the webserver? |
Make sure it's in your classpath. Why not try it outside your IDE and see if it works from the command prompt. If it does then you will be sure you installed it okay. Also catch and SQLException instead of Exception and get it's more specific information - for details check out the API doco. |
|
|