Im trying to connect to a database called "CompanyCSV" using JDBC but when i try to connect it says "No suitable driver found for jdbc:mariadb://localhost:3306/companyCSV", here's the code:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class Connectar {
public static void main(String[] args) {
String url = "jdbc:mariadb://localhost:3306/companyCSV";
String user = "root";
String passwd = "root";
try (Connection con =
DriverManager.getConnection(url, user, passwd);){
System.out.println("Connexió exitosa a la base de dades!");
} catch (SQLException e) {
System.err.println("Error d'establiment de connexió: " + e.getMessage());
}
}
}
Install JDBC driver
To connect your Java app to a MariaBD server via JDBC, you need to obtain a JDBC driver.
If using Maven as your dependency manager, you have to add the following dependency to your pom.xml file. This will download the MariaDB driver for your project.
<dependency>
<groupId>org.mariadb.jdbc</groupId>
<artifactId>mariadb-java-client</artifactId>
<version>2.7.2</version>
</dependency>
You need to load the driver first. I never used MariaDB but for most databases you need to do something like
Class.forName("<class implementing the driver">);
You'll surely find some examples on the MariaDB homepage.
Related
I am having an issue with an app I am testing. I am using Android Studio and JTDS 1.3.1. I am just trying to test connecting to the database. The end product will be a label application only used within our company on our network. I have tried Microsoft's JDBC driver as well, with no success. The app crashes when it tries to create a connection. I have added JTDS as a module and a dependency. The app is just a button that calls a static method and a text view to display an error or success if it works. If I don't load the database driver I do get a SqlException error for no suitable driver found. When I do load the driver the app closes with no error reported.
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class DBHelper {
public static String checkConnection() {
String message;
String username = "username";
String password = "password";
String connectionURL = "jdbc:jtds:sqlserver://server-name/database-name";
try (Connection connection = DriverManager.getConnection(connectionURL, username, password)) {
message = "Success";
return message;
} catch (SQLException sqle) {
message = sqle.getMessage();
return message;
}
}
}
I know it is too late but try using jtds 1.2.7 version jar
I have a problem connecting to SQL-server database through from my android project. I have added sqljdbc41.jar file to my /app/libs directory and I have added it to dependencies in my android studio project.
I use following code:
package com.konrad.rezerwacje1;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
public class Database_Console {
public static void openConnection(){
try {
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
String url = "jbdc:sqlserver://127.0.0.1:1433;databaseName=my_db";
Connection con = DriverManager.getConnection(url);
} catch (SQLException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
public static void main(String[] args){
openConnection();
}
}
yet i still get this error
java.sql.SQLException: No suitable driver found for jbdc:sqlserver://127.0.0.1:1433;databaseName=my_db
at java.sql.DriverManager.getConnection(DriverManager.java:689)
at java.sql.DriverManager.getConnection(DriverManager.java:270)
Instead of this :
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
String url = "jbdc:sqlserver://127.0.0.1:1433;databaseName=my_db";
You have to use this :
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
String url = "jdbc:sqlserver://127.0.0.1:1433;DatabaseName=my_db";
Connection con = DriverManager.getConnection(url, "username", "password");
Note the different classname, and the fact that prefix jbdc in the URL has been changed to jdbc.
If it is not a requirement to go with sqljdbc41.jar, then you might consider using the jtds driver for your requirement to connect to SQL Server 2014 with Android Studio. There are tons of articles that can help you start with this set of technologies.
For a primer, here are the details:
Download the JTDS driver from here
Then import this jar into your Android Studio, eg: jtds-1.2.5.jar
Use the following details in your code:
Class.forName("net.sourceforge.jtds.jdbc.Driver").newInstance();
DriverManager.getConnection("jdbc:jtds:sqlserver://127.0.0.1:1433/DATABASE;user=sa;password=p#ssw0rd");
I am using one simple code to access the SQLite database from Java application .
My code is
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class ConnectSQLite
{
public static void main(String[] args)
{
Connection connection = null;
ResultSet resultSet = null;
Statement statement = null;
try
{
Class.forName("org.sqlite.JDBC");
connection = DriverManager.getConnection("jdbc:sqlite:D:\\testdb.db");
statement = connection.createStatement();
resultSet = statement
.executeQuery("SELECT EMPNAME FROM EMPLOYEEDETAILS");
while (resultSet.next())
{
System.out.println("EMPLOYEE NAME:"
+ resultSet.getString("EMPNAME"));
}
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
try
{
resultSet.close();
statement.close();
connection.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
}
But this code gives one exception like
java.lang.ClassNotFoundException: org.sqlite.JDBC
How can I slove this,please help me.
You need to have a SQLite JDBC driver in your classpath.
Taro L. Saito (xerial) forked the Zentus project and now maintains it under the name sqlite-jdbc. It bundles the native drivers for major platforms so you don't need to configure them separately.
If you are using netbeans Download the sqlitejdbc driver
Right click the Libraries folder from the Project window and select Add Library ,
then click on the Create button enter the Library name (SQLite) and hit OK
You have to add the sqlitejdbc driver to the class path , click on the
Add Jar/Folder.. button and select the sqlitejdbc file you've downloaded previously
Hit OK and you are ready to go !
If you are using Netbeans using Maven to add library is easier. I have tried using above solutions but it didn't work.
<dependencies>
<dependency>
<groupId>org.xerial</groupId>
<artifactId>sqlite-jdbc</artifactId>
<version>3.7.2</version>
</dependency>
</dependencies>
I have added Maven dependency and java.lang.ClassNotFoundException: org.sqlite.JDBC error gone.
I'm using Eclipse and I copied your code and got the same error. I then opened up the project properties->Java Build Path -> Libraries->Add External JARs...
c:\jrun4\lib\sqlitejdbc-v056.jar
Worked like a charm. You may need to restart your web server if you've just copied the .jar file.
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.swing.JOptionPane;
import org.sqlite.SQLiteDataSource;
import org.sqlite.SQLiteJDBCLoader;
public class Test {
public static final boolean Connected() {
boolean initialize = SQLiteJDBCLoader.initialize();
SQLiteDataSource dataSource = new SQLiteDataSource();
dataSource.setUrl("jdbc:sqlite:/home/users.sqlite");
int i=0;
try {
ResultSet executeQuery = dataSource.getConnection()
.createStatement().executeQuery("select * from \"Table\"");
while (executeQuery.next()) {
i++;
System.out.println("out: "+executeQuery.getMetaData().getColumnLabel(i));
}
} catch (SQLException ex) {
JOptionPane.showMessageDialog(null, ex);
}
return initialize;
}
You have to download and add the SQLite JDBC driver to your classpath.
You can download from here https://bitbucket.org/xerial/sqlite-jdbc/downloads
If you use Gradle, you will only have to add the SQLite dependency:
dependencies {
compile 'org.xerial:sqlite-jdbc:3.8.11.2'
}
Next thing you have to do is to initialize the driver:
try {
Class.forName("org.sqlite.JDBC");
} catch (ClassNotFoundException eString) {
System.err.println("Could not init JDBC driver - driver not found");
}
connection = DriverManager.getConnection("jdbc:sqlite:D:\\testdb.db");
Instead of this put
connection = DriverManager.getConnection("jdbc:sqlite:D:\\testdb");
Hey i have posted a video tutorial on youtube about this, you can check that and you can find here the sample code :
http://myfundatimemachine.blogspot.in/2012/06/database-connection-to-java-application.html
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import javax.swing.JOptionPane;
public class Connectdatabase {
Connection con = null;
public static Connection ConnecrDb(){
try{
//String dir = System.getProperty("user.dir");
Class.forName("org.sqlite.JDBC");
Connection con = DriverManager.getConnection("jdbc:sqlite:D:\\testdb.db");
return con;
}
catch(ClassNotFoundException | SQLException e){
JOptionPane.showMessageDialog(null,"Problem with connection of database");
return null;
}
}
}
I use PostgreSQL to create my database and save my users list to it, when i try to connect db by java jdbc, i get error that say:
"java.sql.SQLException: invalid database address:
jdbc:postgresql://localhost:5432/users".
i use "JDBC41 Postgresql Driver, Version 9.3-1102" from PostgreSQL website.
and this is my code:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class javaconnect {
private static Connection c = null;
public static Connection connectDb() {
try {
Class.forName("org.postgresql.Driver");
c = DriverManager.getConnection("jdbc:postgresql://localhost:5432/users", "postgres", "12345");
return c;
} catch (ClassNotFoundException | SQLException e) {
System.err.println(e.getClass().getName() + ": " + e.getMessage());
System.exit(0);
return null;
}
}
}
Thanks.
As the error,
"java.sql.SQLException: invalid database address:
says your database name is incorrect . check for the database name if you have something like sql developer installed.
Valid database name should be specified here "jdbc:postgresql://localhost:5432/users" after the /localhost:5432/
Read JDBC using postgresql to connect to PostgreSQL database using jdbc
I am using one simple code to access the SQLite database from Java application .
My code is
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class ConnectSQLite
{
public static void main(String[] args)
{
Connection connection = null;
ResultSet resultSet = null;
Statement statement = null;
try
{
Class.forName("org.sqlite.JDBC");
connection = DriverManager.getConnection("jdbc:sqlite:D:\\testdb.db");
statement = connection.createStatement();
resultSet = statement
.executeQuery("SELECT EMPNAME FROM EMPLOYEEDETAILS");
while (resultSet.next())
{
System.out.println("EMPLOYEE NAME:"
+ resultSet.getString("EMPNAME"));
}
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
try
{
resultSet.close();
statement.close();
connection.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
}
But this code gives one exception like
java.lang.ClassNotFoundException: org.sqlite.JDBC
How can I slove this,please help me.
You need to have a SQLite JDBC driver in your classpath.
Taro L. Saito (xerial) forked the Zentus project and now maintains it under the name sqlite-jdbc. It bundles the native drivers for major platforms so you don't need to configure them separately.
If you are using netbeans Download the sqlitejdbc driver
Right click the Libraries folder from the Project window and select Add Library ,
then click on the Create button enter the Library name (SQLite) and hit OK
You have to add the sqlitejdbc driver to the class path , click on the
Add Jar/Folder.. button and select the sqlitejdbc file you've downloaded previously
Hit OK and you are ready to go !
If you are using Netbeans using Maven to add library is easier. I have tried using above solutions but it didn't work.
<dependencies>
<dependency>
<groupId>org.xerial</groupId>
<artifactId>sqlite-jdbc</artifactId>
<version>3.7.2</version>
</dependency>
</dependencies>
I have added Maven dependency and java.lang.ClassNotFoundException: org.sqlite.JDBC error gone.
I'm using Eclipse and I copied your code and got the same error. I then opened up the project properties->Java Build Path -> Libraries->Add External JARs...
c:\jrun4\lib\sqlitejdbc-v056.jar
Worked like a charm. You may need to restart your web server if you've just copied the .jar file.
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.swing.JOptionPane;
import org.sqlite.SQLiteDataSource;
import org.sqlite.SQLiteJDBCLoader;
public class Test {
public static final boolean Connected() {
boolean initialize = SQLiteJDBCLoader.initialize();
SQLiteDataSource dataSource = new SQLiteDataSource();
dataSource.setUrl("jdbc:sqlite:/home/users.sqlite");
int i=0;
try {
ResultSet executeQuery = dataSource.getConnection()
.createStatement().executeQuery("select * from \"Table\"");
while (executeQuery.next()) {
i++;
System.out.println("out: "+executeQuery.getMetaData().getColumnLabel(i));
}
} catch (SQLException ex) {
JOptionPane.showMessageDialog(null, ex);
}
return initialize;
}
You have to download and add the SQLite JDBC driver to your classpath.
You can download from here https://bitbucket.org/xerial/sqlite-jdbc/downloads
If you use Gradle, you will only have to add the SQLite dependency:
dependencies {
compile 'org.xerial:sqlite-jdbc:3.8.11.2'
}
Next thing you have to do is to initialize the driver:
try {
Class.forName("org.sqlite.JDBC");
} catch (ClassNotFoundException eString) {
System.err.println("Could not init JDBC driver - driver not found");
}
connection = DriverManager.getConnection("jdbc:sqlite:D:\\testdb.db");
Instead of this put
connection = DriverManager.getConnection("jdbc:sqlite:D:\\testdb");
Hey i have posted a video tutorial on youtube about this, you can check that and you can find here the sample code :
http://myfundatimemachine.blogspot.in/2012/06/database-connection-to-java-application.html
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import javax.swing.JOptionPane;
public class Connectdatabase {
Connection con = null;
public static Connection ConnecrDb(){
try{
//String dir = System.getProperty("user.dir");
Class.forName("org.sqlite.JDBC");
Connection con = DriverManager.getConnection("jdbc:sqlite:D:\\testdb.db");
return con;
}
catch(ClassNotFoundException | SQLException e){
JOptionPane.showMessageDialog(null,"Problem with connection of database");
return null;
}
}
}