tomcat7.0连接池配置

tomcat7.04+MySql的连接

1.首先在tomcat下的config/context.xml中的<context></context>中加入下面的resource

<Resource name="jdbc/MySQLDB" auth="Container" type="javax.sql.DataSource"
        driverClassName="com.mysql.jdbc.Driver"
        maxActive="10" maxIdle="5" maxWait="10000"
        username="ruan" password="123456"
        url="jdbc:mysql://localhost:3306/blog" />

 2.在web.xml中的<web-app></web-app>中加入以下配置

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

 3.程序中获取Connection

public  Connetcion getConnection() {
		try {
			Context ctx = new InitialContext();
			DataSource ds = (DataSource)ctx.lookup("java:/comp/env/jdbc/MySQLDB");
			Connection conn = ds.getConnection();
			System.out.println(conn);
                        return conn;
		} catch (Exception e) {
			e.printStackTrace();
		}
                return null;
	}

 连接Sql数据库只需要更改 driverClassName/url

SQL server2005
driver="com.microsoft.sqlserver.jdbc.SQLServerDriver";
url="jdbc:sqlserver://localhost:1433;databaseName=selectcourse";
SQL server2000
driver = "net.sourceforge.jtds.jdbc.Driver";
url = "jdbc:jtds:sqlserver://127.0.0.1:1433/selectcourse";

Oracle数据库

driverClassName="oracle.jdbc.driver.oracledriver"
url="jdbc:oracle:thin:@localhost:1521:yourdbname"