We Keep Coding

Create connection to SQL database using JDBC Driver- SQLException [duplicate]

I am trying to connect to my database by JDBC on localhost. Connecting via windows authentication is no problem, but I want to connect via SQL authentication. Therefore, I created a login and a user corresponding to this login in my database. I can normally log in SSMS:
My connection string for JDBC:
jdbc:sqlserver://localhost:1433;databaseName=TestBazyDanych;user=doszke;password=doszke123
Thrown exception:
com.microsoft.sqlserver.jdbc.SQLServerException: Login failed for user 'doszke'. ClientConnectionId:b7005fe3-904d-40c5-a89e-af0cb61250d6
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:254)
at com.microsoft.sqlserver.jdbc.TDSTokenHandler.onEOF(tdsparser.java:258)
at com.microsoft.sqlserver.jdbc.TDSParser.parse(tdsparser.java:104)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.sendLogon(SQLServerConnection.java:4772)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.logon(SQLServerConnection.java:3581)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.access$000(SQLServerConnection.java:81)
at com.microsoft.sqlserver.jdbc.SQLServerConnection$LogonCommand.doExecute(SQLServerConnection.java:3541)
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:7240)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:2869)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:2395)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:2042)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectInternal(SQLServerConnection.java:1889)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:1120)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:700)
at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:677)
at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:251)
at main.Main.main(Main.java:38)
The username and password are the same, as those used for loging to SSMS.
Here my class code:
package main;
import java.sql.*;
public class Main {
private static ResultSet selectStan(Connection connection) throws SQLException {
String sql_stmt = "SELECT * FROM STAN;";
Statement statement = connection.createStatement();
ResultSet result = statement.executeQuery(sql_stmt);
System.out.println("Select executed");
return result;
}
public static void main(String[] args) {
try {
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
String userName = "doszke";
String password = "doszke123";
String url = "jdbc:sqlserver://localhost:1433;databaseName=TestBazyDanych;user=doszke;password=doszke123";
try (Connection con = DriverManager.getConnection(url)) {
if(con != null){
System.out.println("connected");
} else {
System.out.println("unable to connect");
}
}
catch (SQLException e) {
e.printStackTrace();
}
}
}

As Mark Rotteveel pointed out, I was trying to connect to a LocalDB instance with JDBC, which seemed undoable. (ref: here)
However, I installed jTDS and added to my classpath, changed my connection string to
jdbc:jtds:sqlserver://./TestBazyDanych;instance=LOCALDB#EB7165FD;namedPipe=true
create a connection by the use of this connection string, username and password and it worked. The instance pipe number was taken from cmd line via
sqllocaldb i MSSQLLocalDB

There are few things need to check:
Did you create doszke user under the database and SSMS?
Are you able to login with doszke/doszke123 credentials in SSMS?
Please check 1433 port are open or not in your inbound and outbound firewall.
Trying to telnet on localhost 1433. If it's getting failed change below setting:
Go to Configuration tools -> SQL Server Configuration Manager Select SQL Server Network Configuration -> Select protocol in the right side window enable tcp/ip and restart the services in services.

Java JDBC with SSL: Wallet version not supported or the trustAnchors parameter must be non-empty

I have configured a Oracle 11g database server to work with SSL using a wallet and self signed certificate. The wallet has auto login enabled.
I tested the connection using a client (sqlplus) from another machine and it works.
Now I'm trying to connect to the database using Java JDBC.
I have two code version, both do not work.
First one is attempting to use the SSO option:
Connection connection = null;
String url = "jdbc:oracle:thin:#(DESCRIPTION=(ADDRESS=(PROTOCOL=tcps)(HOST=192.168.200.191)(PORT=1522))(CONNECT_DATA=(SERVICE_NAME=DBSERVICE)))";
Properties props = new Properties();
props.setProperty("user", "dbuser");
props.setProperty("password", "dbpass");
//Single sign on
props.setProperty("javax.net.ssl.trustStore", "C:\\oracle\\wallet\\cwallet.sso");
props.setProperty("javax.net.ssl.trustStoreType","SSO");
/* Load the database driver */
try
{
Security.addProvider(new oracle.security.pki.OraclePKIProvider());
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
connection = DriverManager.getConnection(url,props);
if (connection != null) {
System.out.println("You made it, take control your database now!");
} else {
System.out.println("Failed to make connection!");
}
}
catch (SQLException ex) {
ex.printStackTrace();
}
In this version I get
java.io.IOException: Wallet version not supported
at oracle.security.pki.OracleSSOKeyStoreSpi.engineLoad(OracleSSOKeyStoreSpi)
The second one is using the wallet itself:
Connection connection = null;
String url = "jdbc:oracle:thin:#(DESCRIPTION=(ADDRESS=(PROTOCOL=tcps)(HOST=192.168.200.191)(PORT=1522))(CONNECT_DATA=(SERVICE_NAME=DBSERVICE)))";
Properties props = new Properties();
props.setProperty("user", "dbuser");
props.setProperty("password", "dbpass");
//with password
props.setProperty("javax.net.ssl.trustStore", "C:\\oracle\\wallet\\ewallet.p12");
props.setProperty("javax.net.ssl.trustStorePassword","WalletPasswd1234");
props.setProperty("javax.net.ssl.trustStoreType","PKCS12");
props.setProperty("oracle.net.ssl_cipher_suites","(SSL_RSA_WITH_3DES_EDE_CBC_SHA)");
/* Load the database driver */
try
{
Security.addProvider(new oracle.security.pki.OraclePKIProvider());
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
connection = DriverManager.getConnection(url,props);
if (connection != null) {
System.out.println("You made it, take control your database now!");
} else {
System.out.println("Failed to make connection!");
}
}
catch (SQLException ex) {
ex.printStackTrace();
}
In this attempt I get
java.io.IOException: Wallet version not supported
at oracle.security.pki.OracleSSOKeyStoreSpi.engineLoad(OracleSSOKeyStoreSpi)
at java.security.KeyStore.load(Unknown Source)
at oracle.net.nt.CustomSSLSocketFactory.getTrustManagerArray(CustomSSLSocketFactory.java:406)
I've added the following JARs to the project (not sure I even need them all):
ojdbc6.jar
oraclepki.jar
osdt_cert.jar
osdt_core.jar
ojpse.jar
osdt_xmlsec.jar
osdt_wss.jar
osdt_saml.jar
ldapjclnt10.jar
jssl-1_1.jar
jaxen.jar
javax-ssl-1_1.jar
Please advise on how I can resolve this, thanks.

Be sure to use oraclepki.jar and ojdbc6.jar from 12.1.0.2 which is the latest version to date. If the problem still persists you can try to convert your wallet into a jks file using orapki wallet pkcs12_to_jks. The full commande line looks like this (replace the values between <> with your own):
orapki wallet pkcs12_to_jks -wallet <wallet_directory> -pwd <wallet_password> -jksKeyStoreLoc <keystore.jks> -jksKeyStorepwd <keystore_jks_password> -jksTrustStoreLoc <truststore.jks> -jksTrustStorepwd <truststore_jks_password>
Using jks files for the keystore and truststore is going to be easier than wallets. All you need is the configure the javax.net.ssl.trustStore and javax.net.ssl.keyStore properties. You don't even need the extra jars like oraclepki.jar or the osdt jars.

How to connect my Access Database using Java

I have the following code
import java.sql.*;
public class UserLogin {
public static void main(String[] args) {
try {
// Load MS accces driver class
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
// C:\\databaseFileName.accdb" - location of your database
String url = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb, *.accdb)};DBQ=" + "C:\\AGENDAS\\Agenda.accdb";
// specify url, username, pasword - make sure these are valid
Connection conn = DriverManager.getConnection(url, "Java2016", "Java2016");
System.out.println("Connection Succesfull");
} catch (Exception e) {
System.err.println("Got an exception! ");
System.err.println(e.getMessage());
}
}
}
and it throws the next error
Got an exception!
sun.jdbc.odbc.JdbcOdbcDriver
How can I make the connection?

If you already use JDK8, I suppose the exception you get is a "class not found" exception. But since you did not post the full stack trace, it is not sure - yet, the class name in the output is a strong pointer in that direction.
Please check the source of your initialization of the JDBC URL, I would be interested. In the driver docs, this style is not listed:
9.3.5 What Is the JDBC URL Supported by the Bridge? The Bridge driver uses the odbc subprotocol. URLs for this subprotocol are of the
form:
jdbc:odbc:<data-source-name>[<attribute-name>=<attribute-value>]*
For example:
jdbc:odbc:sybase
jdbc:odbc:mydb;UID=me;PWD=secret
jdbc:odbc:ora123;Cachesize=300
http://download.oracle.com/otn_hosted_doc/jdeveloper/904preview/jdk14doc/docs/guide/jdbc/getstart/bridge.doc.html
Additionally, this is what I found on the state of the ODBC driver.
Status of the JDBC-ODBC Bridge
The JDBC-ODBC Bridge should be considered a transitional solution; it
will be removed in JDK 8.
http://docs.oracle.com/javase/7/docs/technotes/guides/jdbc/bridge.html
Since you are currently starting the project, it seems wise not to use the JDBC-ODBC bridge. Instead use JDK8 and find a solution involving SQL.Server express edition...

Since you are using Access i suggest using UCanAccess which is an open-source Java JDBC driver implementation that allows java developers and jdbc client programs to read/write Microsoft Access database (.mdb and .accdb files).
I think it's simpler and has more support than the traditional JDBC-ODBC bridge.
After downloading the UCanAccess driver, this is how you can set up your connection :
private Connection con ;
private Statement stmt;
public void connect ( String path ){
try {
Class.forName("net.ucanaccess.jdbc.UcanaccessDriver");
this.con = DriverManager.getConnection(path, "", "");
this.stmt = con.createStatement();
} catch (SQLException ex) {
System.err.println("SQLException: " + ex.getMessage());
}
catch (ClassNotFoundException e) {
System.err.println("classnotfoundException: " + e.getMessage());
}
}

Java Database mySQL access denied

So I am trying to connect to my database and display an item from the table.
The error I am getting is: SQL Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Access denied for user 'Bob'#'%' to database 'TEST'
Is this connecting properly, and if so is the error that the credentials are wrong? And if they are wrong how is it connecting? Thank you
try
{
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://THISISTHEHOSTNAME";
String username = "Bob";
String password = "password";
Connection connection = DriverManager.getConnection(url, username, password);
Statement stmt = null;
ResultSet rs = null;
//SQL query command
String SQL = "SELECT * FROM TEST";
stmt = connection.createStatement();
rs = stmt.executeQuery(SQL);
while (rs.next())
{
System.out.println(rs.getString("ProductName") + " : " + rs.getString("UnitPrice"));
}
}
catch (SQLException e)
{
System.out.println("SQL Exception: "+ e.toString());
}
catch (ClassNotFoundException cE)
{
System.out.println("Class Not Found Exception: "+ cE.toString());
}

You need to grant the proper privileges to the user that is connecting to the mysql db.
The message you are getting is informing you that while your user was able to connect to the database server, it was not allowed to access the database TEST.
Running the following command in the mysql console would grant such access:
GRANT ALL ON TEST.* TO 'BOB'#'%'
This is extremely permissive and you should keep in mind that db users should have the minimal amount of privileges possible and be restricted to the smallest range of hosts.

I used ShowIP Firefox add on and used the IP instead and didn't get any errors but I'm wondering if should return access granted and I'm unable to find an answer at the moment.

Here's a few things to do:
Check to see if your username and password are correct.
Did you add the username to the correct database? (This needs to be done in CPanel SQL)
Did you allow your database to get connection access from your IP address? (This also needs to be done in CPanel SQL)

create a new user in mysql check all global privileges > go to service in netbeans > database > mysql server at localhost > right click connect and fill username password
this work for me

Please try the code below:
import java.sql.*;
public class InsertPrepared {
public static void main(String[] args)
{
try
{
Class.forName("com.mysql.jdbc.Driver");
Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306//test","sanjib","");
PreparedStatement stmt=con.prepareStatement("insert into employee values(???)");
stmt.setInt(1,101);
stmt.setString(2,"Sampa");
int i=stmt.executeUpdate();
System.out.println(i+"Records is inserted");
con.close();
}
catch(Exception e)
{
System.out.println(e);
}
}
}

Java Wont connect to database no matter what driver

import java.sql.*;
public class Connect
{
public static void main (String[] args)
{
Connection conn = null;
try
{
String userName = "root";
String password = "password123!";
String url = "jdbc:oracle:thin:#localhost:3306:procomport";
//Class.forName ("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection(url, userName, password);
//Connection connection = DriverManager.getConnection(url , userName, password);
System.out.println ("Database connection established");
}
catch (Exception e)
{
System.err.println ("Cannot connect to database server");
}
finally
{
if (conn != null)
{
try
{
conn.close ();
System.out.println ("Database connection terminated");
}
catch (Exception e) { /* ignore close errors */ }
}
}
}
}
This is my code I have multiple different databases but it wont connect to any of them what's the problem with this? I keep getting the error it cannot connect to the database. Although I can connect to it using other management tools is it a driver issue? How would I be able to tell if I had the drivers necessary?

The code you've provided to connect to the database won't connect to either MySQL nor Oracle as it stands because it's a mish-mash of attempts to connect to both.
For Oracle, the code should look something like:
String userName = "root";
String password = "password123!";
String url = "jdbc:oracle:thin:#localhost:1521:procomport";
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection(url, userName, password);
(assuming you have a user called root on Oracle, and the Oracle SID is procomport). Note in particular the change of port number: MySQL typically uses 3306, Oracle uses 1521.
For MySQL the connection code should look like:
String userName = "root";
String password = "password123!";
String url = "jdbc:mysql://localhost:3306/procomport";
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection(url, userName, password);
(assuming your MySQL database is called procomport). Note the different style of connection URL and the driver class name.
The Oracle driver is typically in a JAR file named ojdbc6.jar, and the MySQL in a JAR named something like mysql-connector-java-5.1.18-bin.jar.
Finally, when you write something like
catch (Exception e)
{
System.err.println ("Cannot connect to database server");
}
you really aren't helping yourself. The exception e will almost certainly contain the reason why your database connection code isn't working, but by deliberately ignoring it you're making it much harder for yourself to figure out what has gone wrong.
To be honest with you, I'd be tempted to declare the main method throws Exception (by adding this to the end of the public static void main... line), and then you can delete your unhelpful catch block. If an exception is thrown and not handled within main, the JVM will print the stack trace for you before it exits.

After your:
System.err.println();
Place a:
e.printStacktrace();
Then you will see real error message. Probably the driver classes are not in the classpath.
Hope this will help you

Uncomment the line Class.forName("oracle.jdbc.driver.OracleDriver");
Make sure you have the Oracle dirver "oracle.jdbc.driver.OracleDriver" in the classpath