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		<font color="#0000ff">JDBC 2.0姣?.0鏈変簡涓�浜涗笉鍚?浣撶幇鍦ㄥ洓涓瘮杈冩槑鏄劇殑鏂歸潰:</font>
		<br />1&gt;. ResutlSet瀵硅薄涓殑Cursor鑳藉鑷敱涓婁笅縐誨姩<br />2&gt;. 鑳界洿鎺ヤ嬌鐢↗ava紼嬪簭璇█鏉ユ洿鏂癉B琛ㄩ噷鐨勫唴瀹?鑰屼笉闇�瑕侀澶栧啓SQL璇硶<br />3&gt;. 鍙互涓�嬈′紶閫佽澶歋QL璇彞鍒癉B鎵ц----Batch<br />4&gt;. 鏂板2涓暟鎹被鍨?BLOB鍜孋LOB)<br />聽聽 鎴戜滑鐭ラ亾鍦↗DBC 1.0鏃?鍙鐢?connection.createStatement()灝辮兘鍙栧緱Statement()瀵硅薄.涓嶈繃鍦?.0涓鐨刢reateStatement()<br />澶氫簡涓や釜鍙傛暟鍊?闇�瑕佹垜浠嚜宸辨潵瀹氫箟瀹?<br />public Statement createStatement(int resultSetType,<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 int resultSetConcurrency)throws SQLException <br />聽聽 絎竴涓弬鏁皉esultSetType鐢ㄦ潵璁懼畾ResultSet瀵硅薄涓殑鍏夋爣鏄惁鍙互鑷敱涓婁笅縐誨姩,瀹冪殑鍊兼湁涓夌,TYPE_FORWARD_ONLY,TYPE_SCROLL_SENSITIVE,<br />TYPE_SCROLL_INSENSITIVE.鑻ヤ負TYPE_FORWARD_ONLY灝辮〃紺哄拰1.0涓�鏍峰彧鑳界敤next()鏂規硶;鐒跺悗鍚庝袱鑰呭彲浠ヨCursor闅忎究鐨勮嚜鐢辯Щ鍔?涓嶈繃,<br />瀹冧滑涓よ�呮渶澶х殑鍖哄埆鍦ㄤ簬:褰揜esutlSet涓殑鍊兼湁鏀瑰彉鏃?TYPE_SCROLL_SENSITIVE鑳藉彇寰椾慨鏀瑰悗鐨勫�?鑰孴YPE_SCROLL_INSENSITIVE鍒欎笉鑳?<br />聽 絎�屼釜鍙傛暟resultSetConcurrentcy,涓昏鏄瀹歊esultSet瀵硅薄鏄彧璇?read-only)榪樻槸鍙互鏀瑰彉鐨?updateable),瀹冨彲鑳界殑鍊兼湁涓ょ,<br />CONCUR_READ_ONLY鎴栬�呮槸CONCUR_UPDATE.鑻ヨ緗負CONCUR_READ_ONLY,ResultSet瀵硅薄鍜?.0涓�鏍?鑻ヤ負CONCUR_UPDATEABLE,閭ｄ箞灝卞彲浠ョ敤<br />ResultSet瀵硅薄鎵ц鏁版嵁搴撶殑淇敼,澧炲姞鍜岀Щ闄ゅ姛鑳?for example:<br />鍏堢湅鍔熻兘鍜?.0涓�鏍風殑鍐欐硶:<br />Statement stmt=con.createStatement(ResultSet.TYPE_FORWARD_ONLY,<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 ResultSet.CONCUR_READ_ONLY);<br />RestultSet rs=stmt.executeQuery("select ename,empno from emp");<br />while(rs.next())<br />{<br />聽聽 String name=rs.getString("ename");<br />聽聽 int empno=rs.getInt("empno");<br />聽聽 System.out.println("name="+name+","+"number="+empno);<br />}<br />杈撳嚭緇撴灉涓?<br />name=feiyang,number=1190<br />name=jack,聽聽 number=1230<br />name=BillGates number=12<br />...........<br />鍐嶇湅鐪嬩笅闈㈣繖涓?<br />Statement stmt=con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 ResultSet.CONCUR_READ_ONLY);<br />RestultSet rs=stmt.executeQuery("select ename,empno from emp");<br />rs.afterLast();<br />while(rs.previous())<br />{<br />聽聽 String name=rs.getString("ename");<br />聽聽 int empno=rs.getInt("empno");<br />聽聽 System.out.println("name="+name+","+"number="+empno);<br />}<br />杈撳嚭緇撴灉涓?<br />name=BillGates number=12<br />name=jack,聽聽 number=1230<br />name=feiyang,number=1190<br />.............<br />榪欏拰涓婇潰絎竴鏈夌偣涓嶅悓鐨勬槸欏哄簭棰犲�掍簡,榪欐槸鍥犱負鎴戜滑浣跨敤浜唕s.afterLast()榪欎釜鏂規硶.鍏跺疄2.0涓繕鏈夊緢澶氭柟娉?濡備笅:<br />rs.absolute(-1); //琛ㄧずcursor鍦ㄦ渶鍚庝竴絎旀暟鎹?鍗?rs.last()<br />rs.absolute(1);聽 //琛ㄧずcursor鍦ㄧ涓�絎旀暟鎹?鍗硆s.first()<br />rs.absolute(n);聽 //琛ㄧずcursor鍦ㄧN絎旀暟鎹?br />鍋囦嬌鎴戜滑鐩墠鏈?000絎旀暟鎹紝鍙栧緱絎?97絎?br />rs.absolute(-4);<br />榪樻湁涓�涓柟娉曞拰absolute寰堢浉鍍?閭ｅ氨鏄痳elative(),<br />rs.absolute(5); //琛ㄧず絎簲絎旀暟鎹?br />......<br />rs.relative(-3);聽 //琛ㄧずcursor鐩墠鍦ㄧ浜岀瑪鏁版嵁<br />.......<br />rs.relative(1);聽 //cursor鐩墠鍦ㄧ涓夌瑪鏁版嵁<br />鐪嬬湅鎬庝箞鐢≧esultSet瀵硅薄鎵ц鏇存柊鏁版嵁搴撳姩浣?br />聽聽 瑕佽ResultSet瀵硅薄鎵ц鏇存柊鏁版嵁搴撶殑鍔ㄤ綔錛岄鍏堝湪澹版槑Statement瀵硅薄鏃?鍙傛暟蹇呴』璁劇疆涓篢YPE_SCROLL_SENSITIVE鍜?br />CUNCOR_UPDATEABLE.<br />Statement stmt=con.createStatment(RestultSet.TYPE_SCROLL_SENSITIVE,<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 ResultSet.CONCUR_UPDATEABLE);<br />ResultSet rs=stmt.executeQuery("select ename,empno from emp);<br />rs.last();<br />rs.updateInt("empno",2230);<br />rs.cancelRowUpdates();<br />rs.updateInt("empno",1213);<br />rs.updateRow();<br />鏂板鏁版嵁鍒版暟鎹簱<br />Statement stmt=con.createStatment(RestultSet.TYPE_SCROLL_SENSITIVE,<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 ResultSet.CONCUR_UPDATEABLE);<br />ResultSet rs=stmt.executeQuery("select * from emp);<br />rs.moveToInsertRow();<br />rs.updateInt("empno",2230);<br />rs.updateString("ename","feiyang");<br />rs.updateString("job","clerk");<br />rs.updateFloat("sal",123456.5);<br />rs.insertRow();<br />鍒犻櫎鏁版嵁<br />Statement stmt=con.createStatment(RestultSet.TYPE_SCROLL_SENSITIVE,<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 ResultSet.CONCUR_UPDATEABLE);<br />ResultSet rs=stmt.executeQuery("select * from emp);<br />rs.absolute(4);<br />rs.deleteRow();<br />渚濇鎵ц澶氭潯SQL璇彞<br />Statement stmt=con.createStatment();<br />int[] rows;<br />stmt.addBatch("insert into emp values('feiyang','123456')");<br />stmt.addBatch("insert into offcie values('employee','Shanghai')");<br />rows=stmt.executeBatch();<br />褰撴墽琛屽ぇ閲忔暟鎹殑鏃跺�欎負浜嗘暟鎹殑瀹屾暣鎬?寤鴻浣跨敤Transaction<br />eg:<br />con.setAutoCommit(false);<br />Statement stmt=con.createStatement();<br />int[] rows;<br />stmt.addBatch("1...........");<br />stmt.addBatch("2...........");<br />stmt.addBatch("3...........");<br />stmt.addBatch("4...........");<br />stmt.addBatch("5...........");<br />stmt.addBatch("6...........");<br />rows=stmt.executeBatch();<br />con.commit();<br />鍦↗DBC2.0涓柊澧炲姞BLOB鍜孋LOB涓や釜鏁版嵁綾誨瀷<br />BOLB鎸囩殑鏄簩榪涘埗澶у瀷瀵硅薄(Binary Large Object),CLOB鎸囩殑鏄瓧絎﹀ぇ鍨嬪璞?Character Large Object).瀹冧滑鐢ㄦ潵澶勭悊澶у瀷<br />鐨勬暟鎹被鍨?浠栦滑鍒嗗埆浠ｈ〃澶ч噺鐨勪簩榪涘埗鏁版嵁鍜屾枃瀛楁暟鎹?<img src ="http://m.tkk7.com/DuYang/aggbug/45417.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.tkk7.com/DuYang/" target="_blank">Dalston.Young</a> 2006-05-10 12:25 <a href="http://m.tkk7.com/DuYang/articles/45417.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss>                                          <footer>
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