一个JDBC表控件模型 - 编程入门网
作者 佚名技术
来源 NET编程
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发布时间 2012-06-16
| throws SQLException { super(); getTableContents (conn, tableName); } protected void getTableContents (Connection conn, String tableName) throws SQLException { // get metadata: what columns exist and what // types (classes) are they? DatabaseMetaData meta = conn.getMetaData(); System.out.println ("got meta = " + meta); ResultSet results = meta.getColumns (null, null, tableName, null); System.out.println ("got column results"); ArrayList colNamesList = new ArrayList(); ArrayList colClassesList = new ArrayList(); while (results.next()) { colNamesList.add (results.getString ("COLUMN_NAME")); System.out.println ("name: " + results.getString ("COLUMN_NAME")); int dbType = results.getInt ("DATA_TYPE"); switch (dbType) { case Types.INTEGER: colClassesList.add (Integer.class); break; case Types.FLOAT: colClassesList.add (Float.class); break; case Types.DOUBLE: case Types.REAL: colClassesList.add (Double.class); break; case Types.DATE: case Types.TIME: case Types.TIMESTAMP: colClassesList.add (java.sql.Date.class); break; default: colClassesList.add (String.class); break; }; System.out.println ("type: " + results.getInt ("DATA_TYPE")); } columnNames = new String [colNamesList.size()]; colNamesList.toArray (columnNames); columnClasses = new Class [colClassesList.size()]; colClassesList.toArray (columnClasses); // get all data from table and put into // contents array Statement statement = conn.createStatement (); results = statement.executeQuery ("SELECT * FROM " + tableName); ArrayList rowList = new ArrayList(); while (results.next()) { ArrayList cellList = new ArrayList(); for (int i = 0; i<columnClasses.length; i++) { Object cellValue = nul |
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