Tomcat quickly configures the data source

1. Copy the database driver jar package to the tomcat\common\lib directory.

 

2. Modify the server.xml file and add a resource node under the Context configuration node, as follows:

      <Resource name="jdbc/TestDB" auth="Container" type="javax.sql.DataSource"
                 maxActive="100" maxIdle="30" maxWait="10000"
                 username="root" password="" driverClassName="org.gjt.mm.mysql.Driver"
                 url="jdbc:mysql://127.0.0.1:3306/test?characterEncoding=GBK&useUnicode=TRUE"/>

         Note: If there is an & character, it needs to be converted to & (XML file specification)

 

3. Modify the web application WEB-INF\web.xml file and add Resource-Def as follows:

   <resource-ref>
      <description>DB Connection</description>
      <res-ref-name>jdbc/TestDB</res-ref-name>
      <res-type>javax.sql.DataSource</res-type>
      <res-auth>Container</res-auth>
  </resource-ref>

 

4. Restart the web application. In the web application, the data source and database connection can be obtained by the following code:

javax.naming.InitialContext context = new javax.naming.InitialContext();
DataSource ds = (DataSource) cxt.lookup( "java:/comp/env/jdbc/TestDB" );
connection = (Connection)ds.getConnection();