日期:2014-05-16 浏览次数:20597 次
String className,url,uid,pwd; className = "oracle.jdbc.driver.OracleDriver"; url = "jdbc:oracle:thin:@127.0.0.1:1521:orasvr; uid = "system"; pwd = "manager"; Class.forName(className); Connection cn = DriverManager.getConnection(url,uid,pwd);
String jndi = "jdbc/db"; Context ctx = (Context) new InitialContext().lookup("java:comp/env"); DataSource ds = (DataSource) ctx.lookup(jndi); Connection cn = ds.getConnection();
String sql; Statement sm = cn.createStatement(); sm.executeQuery(sql); // 执行数据查询语句(select) sm.executeUpdate(sql); // 执行数据更新语句(delete、update、insert、drop等)statement.close();
String sql; sql = "insert into user (id,name) values (?,?)"; PreparedStatement ps = cn.prepareStatement(sql); ps.setInt(1,xxx); ps.setString(2,xxx); ... ResultSet rs = ps.executeQuery(); // 查询 int c = ps.executeUpdate(); // 更新
cn.close();
Statement sm = cn.createStatement(ResultSet.TYPE_SCROLL_ENSITIVE,ResultSet.CONCUR_READ_ONLY);
PreparedStatemet ps = cn.prepareStatement(sql,ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY); ResultSet.absolute(9000);
Statement sm = cn.createStatement(); sm.addBatch(sql1); sm.addBatch(sql2); ... sm.executeBatch()
PreparedStatement ps = cn.preparedStatement(sql); { ps.setXXX(1,xxx); ... ps.addBatch(); } ps.executeBatch();
cn.setAutoCommit(false);
Statement sm ; sm = cn.createStatement(insert into user...); sm.executeUpdate(); sm.close(); sm = cn.createStatement("insert into corp...); sm.executeUpdate(); sm.close();
cn.commit();
cn.rollback();