weblogic下JNDI及JDBC连接测试(weblogic环境)

JNDI的专业解释，大家自行去网络搜索吧，这里就不啰嗦了。

单纯从使用角度看，可以简称把它看成一个key-value的“哈希资源”容器。给定一个string类型的key，可以把任何类型的value，放入这个容器（通过bind/rebind方法）；其它地方需要使用该资源时，根据key就能取出该资源（通过lookup方法）

JNDI使用示例：

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package jmyang.weblogic;    /**  * <p>Title:JNDI示例(WebLogic环境) </p>  * <p>Description: </p>  * <p>Copyright: Copyright (c) 2012</p>  * <p>Company:cnblogs </p>  * @菩提下的杨过  * @version 1.0  */    import javax.naming.*; import java.util.Hashtable;    public class JNDITest {        static Context ctx = null;        public static void test() {         String key = "jmyang";            //先绑定         bind(key, "杨俊明");            //再取出来         String value = (String) lookUp(key);            System.out.print(key + "=" + value);     }        /*      *绑定      */     public static void bind(String name, String object) {         Hashtable ht = new Hashtable();         ht.put(Context.INITIAL_CONTEXT_FACTORY,                "weblogic.jndi.WLInitialContextFactory");         ht.put(Context.PROVIDER_URL, "t3://localhost:7001");         try {             ctx = new InitialContext(ht);             ctx.rebind(name, object);         } catch (NamingException e) {             e.printStackTrace();         } finally {             try {                 ctx.close();             } catch (Exception e) {                 e.printStackTrace();             }         }     }        /*      *      */     public static Object lookUp(String name) {         Hashtable ht = new Hashtable();         ht.put(Context.INITIAL_CONTEXT_FACTORY,                "weblogic.jndi.WLInitialContextFactory");         ht.put(Context.PROVIDER_URL, "t3://localhost:7001");         try {             ctx = new InitialContext(ht);             Object object = ctx.lookup(name);             return object;         } catch (Exception e) {} finally {             try {                 ctx.close();             } catch (Exception e) {                 e.printStackTrace();             }         }         return null;     } }

上述代码执行完以后，也可能通过weblogic控制台，查看jndi树来验证:

JDBC数据源，实际上，也是使用JNDI服务来访问的，下面是JDBC示例代码:(必须先在weblogic中创建数据源)

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package jmyang.weblogic;    /**  * <p>Title:JDBC示例(WebLogic环境) </p>   * <p>Description: </p>   * <p>Copyright: Copyright (c) 2012</p>  * <p>Company:cnblogs </p>  * @菩提下的杨过  * @version 1.0  */ import java.sql.*; import javax.naming.*; import javax.sql.*; import java.util.Hashtable;    public class JDBCTest {        static final String webLogicServer = "t3://localhost:7001"; //weblogic服务器地址     static final String webLogicINDIStr =             "weblogic.jndi.WLInitialContextFactory";         public static void test() {         Connection myConn = null;         DataSource ds = null;         Context ctx = null;            Hashtable ht = new Hashtable();         ht.put(Context.INITIAL_CONTEXT_FACTORY, webLogicINDIStr);         ht.put(Context.PROVIDER_URL, webLogicServer);         try {             ctx = new InitialContext(ht);             ds = (javax.sql.DataSource) ctx.lookup("infoskysso"); //取得名为infoskysso的数据源(注:infoskysso要在weblogic中设置数据源)         } catch (NamingException e) {             e.printStackTrace();         }            Statement myStatement = null;         ResultSet myResultSet = null;            try {             myConn = ds.getConnection();//建立连接                myStatement = myConn.createStatement();             myResultSet = myStatement.executeQuery(                     "Select DEPTNO From DEPT where rownum<=10");                while (myResultSet.next()) {                 System.out.println("DEPTNO=" + myResultSet.getInt("DEPTNO"));             }             myResultSet.close();         } catch (SQLException e) {             System.out.println("Error code = " + e.getErrorCode());             System.out.println("Error message = " + e.getMessage());         } finally {                            //关闭查询             if (myStatement != null) {                 try {                     myStatement.close();                 } catch (SQLException e) {                     System.out.println("Error code = " + e.getErrorCode());                     System.out.println("Error message = " + e.getMessage());                 }             }                //关闭连接             if (myConn != null) {                 try {                     myConn.close();                 } catch (SQLException e) {                     System.out.println("Error code = " + e.getErrorCode());                     System.out.println("Error message = " + e.getMessage());                 }             }         }        } }

附: weblogic中创建jdbc数据源的方法