DataSource ds = (DataSource)ctx.lookup("java:/PostgreSql<這個文件和xml文件中的名字對應>"); con = ds.getConnection();jdbc:postgresql://『主機的域名或者IP』:『數據庫的端口』/『要連接的數據庫名字』
配置文件的內容如下
<?xml version="1.0" encoding="UTF-8"?> <datasources> <local-tx-datasource> <jndi-name>PostgreSql</jndi-name> <connection-url>jdbc:postgresql://localhost:5432/testdb</connection-url> <driver-class>org.postgresql.Driver</driver-class> <user-name>username</user-name> <password>password</password> <!-- The minimum connections in a pool/sub-pool. Pools are lazily constructed on first use --> <min-pool-size>5</min-pool-size> <!-- The maximum connections in a pool/sub-pool --> <max-pool-size>100</max-pool-size> </local-tx-datasource> </datasources>