如何在tomcat中用jndi配置多个数据库

一、直连接数据库
1 Java 连接 Oralce

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Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String url="jdbc:oracle:thin:@localhost:1521:orcl";
Connection conn= DriverManager.getConnection(url,user,password);

2 Java 连接 MySQL

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Class.forName("org.gjt.mm.mysql.Driver ").newInstance();
String URL = "jdbc:mysql://localhost/test";
Connection conn= DriverManager.getConnection(url,user,password);

3 Java 连接SQLServer

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Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver ").newInstance();
String URL =” jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=pubs";
Connection conn= DriverManager.getConnection(url,user,password);

4 Java 连接DB2

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Class.forName(“com.ibm.db2.jdbc.app.DB2Driver ").newInstance();
String URL =”jdbc:db2://localhost:5000/sample";
Connection conn= DriverManager.getConnection(url,user,password);

5 Java 连接 Infomix

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Class.forName("com.informix.jdbc.IfxDriver ").newInstance();
String URL ＝jdbc:informix-sqli://123.45.67.89:1533/testDB:INFORMIXSERVER=myserver
Connection conn= DriverManager.getConnection(url,user,password);

6 Java 连接 SyBase

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Class.forName("com.sybase.jdbc.SybDriver").newInstance();
Properties sysProps = System.getProperties();
SysProps.put("user","userid");
SysProps.put("password","user_password");
Connection conn= DriverManager.getConnection(url, SysProps);

7 Java连接 PostgreSQL

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Class.forName("org.postgresql.Driver").newInstance();
String url ="jdbc:postgresql://localhost/soft"
Connection conn= DriverManager.getConnection(url,user,password);