Just wondering if anyone cane help me, I'm trying to connect to an MS Access Database. I have done it on other projects and used exactly the same code. Can anyone see if I have done anything wrong?
try {
System.out.println("Attempting Database Connection");
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String sourceURL = "jdbc:odbc:Driver={Microsoft Access Driver(*.mdb)};DBQ=MotivationDatabase.mdb;";
connection = DriverManager.getConnection(sourceURL, "", "");
stmt = connection.createStatement();
System.out.println("Connection made");
} catch (Exception e) {
System.out.println("Database connection attempt failed");
System.out.println(e);
}
I keep getting the error:
java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] Could not find file '(unknown)'.
But my database is in the same folder as my project like I've done before s I'm not sure why i am getting this error. Help?
Control Panel -> Administrative Tools -> ODBC Data Sources -> Add -> Microsoft Access Driver(*mdb,*accdb)
Specify the correct path to MotivationDatabase.mdb corresponding to Data Source name and save the settings.
Refer here.
Code:
public class Main {
#SuppressWarnings("unused")
public static void main(String[] args) {
try {
System.out.println("Attempting Database Connection");
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String sourceURL = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb, *.accdb)};DBQ="
+ "D:\\MotivationDatabase.mdb";
Connection connection = DriverManager.getConnection(sourceURL);
System.out.println("Connection made");
} catch (Exception e) {
e.printStackTrace();
}
}
}
Output:
P.S: Please learn to work with JDBC as JDBC-ODBC Bridge will be removed in JDK8.See here.
EDIT:
You can also use JDBC along with UCanAccess API to connect to an MSAccess database. You would need the following jars in your project build path.
commons-lang-2.6.jar
commons-logging-1.1.1.jar
hsqldb.jar
jackcess-2.1.0.jar
ucanaccess-2.0.9.5.jar
Code:
connection = DriverManager
.getConnection("jdbc:ucanaccess:////REMOTE-IP-ADDRESS/shared-folder/TestDB.mdb");
System.out.println("CONNECTION ESTABLISHED....");
Works fine with JDK8. You can download the entire source code from here.
Sun JDBC ODBC will notte work with MS access when java 8 will ne release: I suggest you to use apache poi project. It s simple and works great.
Yeah it's correct the right project is jakcess:
import com.healthmarketscience.jackcess.DatabaseBuilder;
import com.healthmarketscience.jackcess.Row;
import com.healthmarketscience.jackcess.Table;
try{Table table = DatabaseBuilder.open(new File("filename")).getTable("tablename");
righe.add(0);
for(Row row : table) {
String articolo=row.get("ColName").toString();
Try this class forename and connection URL.Add the below jar files to your projects:
commons-lang.jar,commons-logging.jar,hsqldb.jar,jackcess.jar,ucanaccess.jar
Class.forName("net.ucanaccess.jdbc.UcanaccessDriver");
//change the path with your own accdb file
String URL = "jdbc:ucanaccess://D:\\projects\\test.accdb";
Connection con = DriverManager.getConnection(URL);
Related
You can check the in the image(link at the end of sentence) the library and code as well ---
The error is java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver. I already have mysql-connector-java-5.1.23-bin and it's already pasted in my Webserver's lib directory. Below is the code.
package databaseinsertexample;
import java.sql.*;
import java.sql.DriverManager;
public class DatabaseInsertExample {
public static void main(String[] args) {
try
{
Class.forName("com.mysql.cj.jdbc.Driver");
Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/myteam","root","");
String sql="insert into teams values(?,?,?)";
PreparedStatement stmt=con.prepareStatement(sql);
stmt.setString(1,"India");
stmt.setString(2, "Niraj");
stmt.setInt(3, 100);
stmt.execute();
con.close();
} catch(Exception e)
{
System.out.println(e);
}
}
}
On the Localhost site of XAMPP, the Database has been created properly but when I'm executing the program on my Java file via Netbeans it's not reflecting on the Database. Please help I'm new to this Programming world, I checked on YouTube still I'm not able to clear this doubt of mine.
change your clase forName like this.
Class.forName("com.mysql.jdbc.Driver");
And also please refer this question - How to connect XAMPP MySQL local DB using JDBC?
This question already has answers here:
Connect Java to a MySQL database
(14 answers)
The infamous java.sql.SQLException: No suitable driver found
(21 answers)
Closed last month.
I am trying to write a program to connect to a MySQL database in eclipse, but I get the error "java.sql.SQLException: No suitable driver found".
The java code is:
import java.sql.*;
public class FirstExample {
//static final String S_JDBC_DRIVER = "com.mysql.jdbc.Driver";
static final String S_DB_URL = "jdbc:mysql://localhost:3306/emp";
static final String S_USER = "root";
static final String S_PASS = "root";
public static void main(String[] args) {
try {
System.out.println("Connecting to database...");
//Class.forName(S_JDBC_DRIVER);
Connection connection = DriverManager.getConnection(S_DB_URL,
S_USER, S_PASS);
System.out.println("Creating statement...");
Statement statement = connection.createStatement();
String sql = "SELECT * FROM Employee";
ResultSet resultSet = statement.executeQuery(sql);
while (resultSet.next()) {
int iId = resultSet.getInt("id");
int iAge = resultSet.getInt("age");
String sFirst = resultSet.getString("fname");
String sLast = resultSet.getString("lname");
System.out.print("ID: " + iId);
System.out.print("\tAge: " + iAge);
System.out.print("\tFirst: " + sFirst);
System.out.println("\tLast: " + sLast);
}
resultSet.close();
statement.close();
connection.close();
} catch (SQLException se) {
for (Throwable t : se) {
t.printStackTrace();
}
}
System.out.println("Goodbye!");
}
}
The output in the console tab is:
Connecting to database...
java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/emp
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at FirstExample.main(FirstExample.java:21)
Goodbye!
I have used the MySQL Connector/J. It is unzipped in the MySQL installation directory and the jar file is added to the CLASSPATH.
Also refer to this image. There is an ! mark at the project root.image01
I get the error as in the next image: image02 when I include the 2 commented statements:
static final String S_JDBC_DRIVER = "com.mysql.jdbc.Driver";
Class.forName(S_JDBC_DRIVER);
For all but the most trivial applications the CLASSPATH environment variable is NOT used. Normally the libraries are include in the Class-Path entry in the manifest of the jar, or in the -cp option of the java commandline.
In this case you need to add the MySQL JDBC driver to the buildpath of your Eclipse project.
I had the same problem. I solved it by adding:
Class.forName("com.mysql.jdbc.Driver");
you can place the path like java -cppwd/mysql-connector-java-5.1.22-bin.jar:. <classname>.
make sure that your in same directory where the mysql driver is .
Hope that helps .
Load Driver class just before getting the connection.
Use this code:
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test_db", "user", "passw");
Alternatively you can also add the installed jar file to your eclipse project by selecting the project in eclipse, right click it and go down to properties, select the Java Build Path>>select the Libraries Tab>>Add external jar file and browse for the installed mysql-connector-java.jar file or any mysql java connector file int the /usr/share/java/ directory for most ubuntu users. Click okay and rebuild your project. Good luck
I encountered the same problem as you, but I handled it as follows:
I copied the jar, which is called mysql-connector-java-5.1.23-bin.jar, into the \Apache Software Foundation\Tomcat 6.0\lib, and restarted tomcat.
Hope that helps
So I just started learning about databases this week and one of the things I need to be able to do is connect to my mySQL database that I created using Java. I have done some research and I have tried to find the correct way of doing this I just can't seem to figure out how. Here is my code:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class Menu
{
public void menu()
{
Connection conn;
String url = "jdbc:mysql://localhost:3306/";
String dbName = "gym";
String driver = "com.mysql.jdbc.Driver";
String userName = "root";
String password = "password";
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)
{
System.out.println("NO CONNECTION =(");
System.out.println(e.getMessage());
}
}
}
Now the problem is, is that every time I run this code, the "No Connection =( " appears and then it says the error is: "com.mysql.jdbc.Driver". Can somebody please help me and say what I am doing wrong? Thank you. Much appreciated.
Your error means that your library path doesn't contain the jar that contains the com.mysql.jdbc.Driver class.
You don't have to change anything in your code. If you are running it via Eclipse, you should add mysql-connector-java-x.x.x-bin.jar to your build path (where x.x.x is the version of the jar).
All JDBC connection classes need their respective drivers which are normally supplied as jar files from the database vendor, add the relevant database driver to your classpath.
The .jar file will be available from the vendors site, in this case : http://www.mysql.com/products/connector/ and then to add this to the classpath of your project in the ide of your choice. Here is a guide for eclipse : http://www.wikihow.com/Add-JARs-to-Project-Build-Paths-in-Eclipse-(Java)
Try and run again once you have this.
I need to load data from an SQLite file into a java program which I develop in Netbeans.
The file is to be loaded via a swing menu item. I'm using sqlitejdbc as driver.
Here are the code blocks I assume to be important:
// header stuff
package aufgabe_9;
import java.sql.*;
//...
// menu item opening the file
private void mitemOpenFileActionPerformed(java.awt.event.ActionEvent evt)
{
/**
* Handles the dialogue for selecting and loading file.
*/
JFileChooser fileChoose = new JFileChooser();
fileChoose.showOpenDialog(this); //'this' calls the current object
//Load the sql file
try {
String filePath = fileChoose.getSelectedFile().toString();
Connection conn = DriverManager.getConnection("jdbc:sqlite:" +
filePath);
//Close the connection
if (conn != null)
conn.close();
}
catch (SQLException e){System.err.println("Database problem: " + e);}
}
}
//...
When running the program and loading a file via the menu, I get the following error:
java.sql.SQLException: No suitable driver found for jdbc:sqlite:/home/levent
/temp/A9AProbeflaeche.db
After reading the respective stackexchange posts, I understand that this
problem can be caused by (1) a malformed file URL or (2) the driver not being
loaded. Here's some further information:
I added the sqlitejdbc-3.7.2.jar to the library classpath via Tools --> Libraries as well as to the project libraries via Window --> Projects.
I also checked the Classpath by using this function. It contains the path to the jdbc jar-file just as expected.
I can connect to the database via the Services menu without any problems, so I can assume the URL to be correct, as well as sqlite running on my system.
Some OS information: I'm running Netbeans 8.0 on 64 bit ARCH Linux 3.12.9-2.
Can anybody tell me what I'm missing here? Any help appreciated!
Problem solved
Here is the code that works for me:
//...
private void mitemOpenFileActionPerformed(java.awt.event.ActionEvent evt)
{
/**
* Handles the dialogue for selecting and loading file.
*/
JFileChooser fileChoose = new JFileChooser();
fileChoose.showOpenDialog(this);
//Load the sql file
try {
//Get file path
String filePath = fileChoose.getSelectedFile().toString();
//Open connection
Class.forName("org.sqlite.JDBC");
Connection conn = DriverManager.getConnection("jdbc:sqlite:" + filePath);
//Do stuff...
//Close the connection
conn.close();
}
//"Multicatch":
catch (SQLException | ClassNotFoundException e) {
System.err.println("Database problem: " + e);
}
//...
You probably need to load the driver class so that it registers itself to the DriverManager using the following code:
Class.forName("org.sqlite.JDBC");
Note: this only needs to be called once in your application.
This was a standard procedure before the Java included the ServiceLoader API, now the DriverManager uses that API to register the drivers it finds in the classpath, but the drivers need to declare a file named java.sql.Driver containing the name of the driver class in the directory META-INF\services of their jar.
I am trying to connect to an oracle database in eclipse. I have ojdbc14.jar in a lib folder in the same project and i added it to the build path of my project, so it also resides in the Referenced Libraries directory, but yet i still get an output to the console of "Could not find the database driver"
Myself and another student employee have been trying to get this figured out for the past day and a half, and no one else in our department is experienced in Java and JSP so i thought StackOverflow would be our best bet =)
try {
// Load the JDBC driver
String driverName = "oracle.jdbc.driver.OracleDriver";
System.out.println("Attempting to load the driver...");
Class.forName(driverName);
System.out.print("Loaded the driver");
// Create a connection to the database
String serverName = " ;) ";
String portNumber = " ;) ";
String sid = " ;) ";
String url = "jdbc:oracle:thin:#" + serverName + ":"
+ portNumber + ":" + sid;
String username = "kenne13";
String password = "**********";
connection = DriverManager.getConnection(url, username, password);
if (connection != null) {
return true;
}
} catch (ClassNotFoundException e) {
// Could not find the database driver
System.out.println("Could not find the database driver");
connected = false;
} catch (SQLException e) {
// Could not connect to the database
System.out.println("Could not connect to the database");
connected = false;
}
Here is the output in the console:
Aug 18, 2011 10:07:50 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 382 ms
Attempting to load the driver...
Could not find the database driver
Here is a screen capture of the code, the error, and my project directories.
I'm quite sure now that the class name of the driver is oracle.jdbc.OracleDriver and not oracle.jdbc.driver.OracleDriver.
I believe the Oracle Driver class is: oracle.jdbc.OracleDriver
Go to the deploy folder(C:\Program Files\Apache Software Foundation\Tomcat 6.0\webapps) of your web app and make sure that ojdbc14.jar is there.
In a related post:
Cannot find Oracle jdbc driver
the problem was solved adding the oracle library in the run path. Have you tried to configure too? (Run/Run Configurations Select your configuration/classpath tab)