What is the MySQL JDBC driver connection string

Question

I am new to JDBC and I am trying to make a connection to a MySQL database  I am using Connector J driver  but I cant find the JDBC connection string for my Class forName   method

User · Answer

protocol   hosts   database   properties   If you don t have any properties ignore it then it will be like   jdbc mysql   127 0 0 1 3306 test   jdbc mysql is the protocol 127 0 0 1  is the host and 3306 is the port number test is the database

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jdbc mysql   localhost    From the oracle docs    jdbc mysql    host   failoverhost       port   database    propertyName1   propertyValue1    amp propertyName2   propertyValue2    host port is the host name and port number of the computer hosting your database  If not specified  the default values of host and port are 127 0 0 1 and 3306  respectively   database is the name of the database to connect to  If not specified  a connection is made with no default database   failover is the name of a standby database  MySQL Connector J supports failover    propertyName propertyValue represents an optional  ampersand-separated list of properties  These attributes enable you to instruct MySQL Connector J to perform various tasks

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Here is a little code from my side    needed driver  com mysql jdbc Driver  download  here  Platform Independent  connection string in one line  jdbc mysql   localhost 3306 db-name user user name amp password db password amp useSSL false  example code  public static void testDB        try           Class forName  quot com mysql jdbc Driver quot          catch  ClassNotFoundException e            e printStackTrace               try           Connection connection   DriverManager getConnection                   quot jdbc mysql   localhost 3306 db-name user user name amp password db password amp useSSL false quot            if  connection    null                Statement statement   connection createStatement                if  statement    null                    ResultSet resultSet   statement executeQuery  quot select   from test quot                    if  resultSet    null                        ResultSetMetaData meta   resultSet getMetaData                        int length   meta getColumnCount                        while resultSet next                                                  for int i   1  i  lt   length  i                                 System out println meta getColumnName i     quot    quot    resultSet getString meta getColumnName i                                                                         resultSet close                                      statement close                              connection close                    catch  Throwable throwable            throwable printStackTrace

User · Answer

Here s the documentation   https   dev mysql com doc connector-j en connector-j-reference-configuration-properties html  A basic connection string looks like   jdbc mysql   localhost 3306 dbname   The class forName string is  com mysql jdbc Driver   which you can find  edit  now on the same page

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Assuming your driver is in path   String url    jdbc mysql   localhost test   Class forName   com mysql jdbc Driver   newInstance     Connection conn   DriverManager getConnection  url   username    password

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As the answer seems already been answered  there is not much to add but I would like to add one thing to the existing answers  This was the way of loading class for JDBC driver for mysql   com mysql jdbc Driver   But this is deprecated now  The new driver class is now  com mysql cj jdbc Driver   Also the driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary

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For Mysql  the jdbc Driver connection string is com mysql jdbc Driver  Use the following code to get connected -  class DBConnection      private static Connection con   null     private static String USERNAME    your mysql username      private static String PASSWORD    your mysql password      private static String DRIVER    com mysql jdbc Driver      private static String URL    jdbc mysql   localhost 3306 database name       public static Connection getDatabaseConnection           Class forName DRIVER          return con   DriverManager getConnection URL USERNAME PASSWORD

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update for mySQL 8   String jdbcUrl  quot jdbc mysql   localhost 3306 youdatabase useSSL false amp serverTimezone UTC quot   Check whether your Jdbc configurations and URL correct or wrong using the following code snippet  import java sql Connection  import java sql DriverManager   public class TestJdbc        public static void main String   args               db name testdb version001           useSSL false  get rid of MySQL SSL warnings           String jdbcUrl    quot jdbc mysql   localhost 3306 testdb version001 useSSL false quot           String username  quot testdb quot           String password   quot testdb quot            try               System out println  quot Connecting to database   quot   jdbcUrl               Connection myConn                       DriverManager getConnection jdbcUrl username password                System out println  quot Connection Successful     quot               catch  Exception e               e printStackTrace                  e printStackTrace

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String url    jdbc mysql   localhost 3306 dbname   String user    user   String pass    pass   Class forName   com mysql jdbc Driver   newInstance     Connection conn   DriverManager getConnection  url  user  pass     3306 is the default port for mysql   If you are using Java 7 then there is no need to even add the Class forName  com mysql jdbc Driver   newInstance     statement Automatic Resource Management  ARM  is added in JDBC 4 1 which comes by default in Java 7   The general format for a JDBC URL for connecting to a MySQL server is as follows  with items in square brackets       being optional   jdbc mysql    host1   port1    host2   port2        database        propertyName1 propertyValue1  amp propertyName2 propertyValue2

User · Answer

Check if the Driver Connector jar matches the SQL version  I was also getting the same error as I was using the  mySQl-connector-java-5 1 30 jar  with MySql 8

User · Answer

It is very simple     Go to MySQL workbench and lookup for Database   Manage Connections you will see a list of connections  Click on the connection you wish to connect to  You will see a tabs around connection  remote management  system profile  Click on connection tab  your url is jdbc mysql    lt hostname gt   lt port gt   lt dbname gt  prop1 etc  where  lt hostname gt  and  lt port gt  are given in the connection tab It will mostly be localhost   3306   lt dbname gt  will be found under System Profile tab in Windows Service Name  Default will mostly be MySQL5 lt x gt  where x is the version number eg  56 for MySQL5 6 and 55 for MySQL5 5 etc You can specify ur own Windows Service name to connect too  Construct the url accordingly and set the url to connect

User · Answer

it s depends on what service you re using  if you use MySQL Workbench it wold be some thing like this   jdbc mysql    quot host quot   quot port number quot   String url    quot jdbc mysql   localhost 3306  quot    And of course it will be different if you using SSL SSH  For more information follow the official link of Jetbriens  intelliJ idea    Connecting to a database   https   www jetbrains com help idea connecting-to-a-database html  Configuring database connections   https   www jetbrains com help idea configuring-database-connections html

User · Answer

update for mySQL 8    String jdbcUrl  jdbc mysql   localhost 3306 youdatabase useSSL false amp serverTimezone UTC

User · Answer

The method Class forName   is used to register the JDBC driver  A connection string is used to retrieve the connection to the database  The way to retrieve the connection to the database is shown below  Ideally since you do not want to create multiple connections to the database  limit the connections to one and re-use the same connection  Therefore use the singleton pattern here when handling connections to the database  Shown Below shows a connection string with the retrieval of the connection  public class Database           private String URL    quot jdbc mysql   localhost 3306 your db name quot     database url     private String username    quot  quot     database username     private String password    quot  quot     database password     private static Database theDatabase   new Database         private Connection theConnection           private Database            try                Class forName  quot com mysql jdbc Driver quot      setting classname of JDBC Driver               this theConnection   DriverManager getConnection URL  username  password             catch Exception ex               System out println  quot Error Connecting to Database   quot  ex                        public static Database getDatabaseInstance            return theDatabase                 public Connection getTheConnectionObject            return theConnection

[mysql] What is the MySQL JDBC driver connection string?

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