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读developerWorks [url="http://www.ibm.com/developerworks/cn/java/j-diag/"]Java 错误模式[/url]系列文章笔记。 1. * 模式：[url=http://www.ibm.com/developerworks/cn/java/j-diag/part1/]Rogue Tile[/url] * 症状：...

[code="java"] // Log表的dt字段是DATETIME类型 PreparedStatement ps = conn.preparedStatement("insert into log(dt) value(?)"); // MySQL中DATETIME类型的默认格式为"yyyy-MM-dd HH:mm:ss" SimpleDateFormat sdf = new Simpl...

[code="java"] java.util.Calendar today = java.util.Calendar.getInstance(); today.add(Calendar.DATE, -1); java.util.Date yesterday = new java.util.Date(today.getTimeInMillis()); [/code] 参考自[url=...

[code="java"] Statement stmt = conn.createStatement(); stmt.executeUpdate(anInsertSQL, Statement.RETURN_GENERATED_KEYS); ResultSet rs = stmt.getGeneratedKeys(); if (rs.next()) { key = rs.getInt...