Java 6 RowSet ʹÓÃÍêÈ«ÆÊÎö(2)
Java 6 RowSet ʹÓÃÍêÈ«ÆÊÎö(2)
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ÓÉÓÚ CachedRowSet Êǽ«Êý¾ÝÁÙʱ´æ´¢ÔÚÄÚ´æÖУ¬Òò´Ë¶ÔÓÚÐí¶à SQL ²éѯ£¬»á·µ»Ø´óÁ¿µÄÊý¾Ý¡£Èç¹û½«Õû¸ö½á¹û¼¯È«²¿´æ´¢ÔÚÄÚ´æÖлáÕ¼ÓôóÁ¿µÄÄڴ棬ÓÐʱÉõÖÁÊDz»¿ÉÐеġ£¶Ô´Ë CachedRowSet ÌṩÁË·ÖÅú´Ó ResultSet ÖлñÈ¡Êý¾ÝµÄ·½Ê½£¬Õâ¾ÍÊÇ·ÖÒ³¡£Ó¦ÓóÌÐò¿ÉÒÔ¼òµ¥µÄͨ¹ý setPageSize ÉèÖÃÒ»Ò³ÖÐÊý¾ÝµÄ×î´óÐÐÊý¡£Ò²¾ÍÊÇ˵£¬Èç¹ûÒ³´óСÉèÖÃΪ 5£¬Ò»´ÎÖ»»á´ÓÊý¾ÝÔ´»ñÈ¡ 5 ÌõÊý¾Ý¡£ÏÂÃæµÄ´úÂëʾ·¶ÁËÈçºÎ½øÐмòµ¥·ÖÒ³²Ù×÷¡££¨·ÖÒ³²¿·Ö´úÂëĬÈÏ ORDERS ±íÖÐÓÐ 10 ÌõÊý¾Ý£©
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ResultSet rs = stmt.executeQuery(DBCreator.SQL_SELECT_ORDERS);
CachedRowSet cachedRS = new CachedRowSetImpl(); // ÉèÖÃÒ³´óС
cachedRS.setPageSize(4);
cachedRS.populate(rs, 1);
while (cachedRS.nextPage()) { printRowSet(cachedRS); }
while (cachedRS.previousPage()) { printRowSet(cachedRS); }
ResultSet rs = stmt.executeQuery(DBCreator.SQL_SELECT_ORDERS);
CachedRowSet cachedRS = new CachedRowSetImpl(); // ÉèÖÃÒ³´óС
cachedRS.setPageSize(4);
cachedRS.populate(rs, 1);
while (cachedRS.nextPage()) { printRowSet(cachedRS); }
while (cachedRS.previousPage()) { printRowSet(cachedRS); }
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Java:
Simple HTTPUrlConnection example
package
ChinaCache;
import
java.io.BufferedReader;
import
java.io.IOException;
import
java.io.InputStreamReader;
import
java.io.OutputStreamWriter;
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java.net.HttpURLConnection;
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