Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

JavaµÄ·½·¨ÖØÔØ

¸÷λ´óÏÀ£¬ÎÒµÄÒ»¸öÀàÖÐÓÐÁ½·½·¨
·½·¨1:
public Object executeUpdate(final String sql, final Object... values) {
  ...
}

·½·¨2:
public Object executeUpdate(final String sql, final List values) {
  ..
}

ϱßÊÇÎҵĵ÷ÓÃ
List list = new ArrayList();
list.add("aa");
executeUpdate("select * from xxx ",list);

¿ÉÒÔÎÒÕâ¸ö·½·¨µ÷ÓõÄÊÇ·½·¨1,ÎÒÈçºÎ×ö²ÅÄÜÈÃËüµ÷Ó÷½·¨2ÄØ
Õâ2¸ö·½·¨ÊôÓÚͬһ·½·¨Object±¾À´¾ÍÊÇListµÄÉϲã,²¢ÇÒ»¹²ÉÓÃÁ˶à²Î,ËùÒÔÖ»ÐèÒªÓ÷½·¨1...

ÎҵıàÒëÆ÷µ÷ÓõÄÊǵڶþ¸ö·½·¨°¡¡£²»»áµ÷ÓõÚÒ»¸ö·½·¨¡£
executeUpdate("select * from xxx ", (Object)list);

ÕâÑù¾Íµ÷ÓõÚÒ»¸ö·½·¨

ÎÒ°´ÕÕÄãµÄµ÷Ó÷½Ê½£¬µ÷ÓõÄÊÇ·½·¨2...
lsµÄ×¢ÒâÉÏÃæµÄÊÇObject...²»ÊÇObject

public void executeUpdate(final String sql, final Object... values) {
System.out.println(1);
}

public void executeUpdate(final String sql, final Object[] values) {
System.out.println(2);
}

Object...ºÍObject[]ÊǵÈЧµÄ£¬ËùÒÔÈç¹ûÕâôд£¬±à¼­Æ÷Êǻᱨ´íµÄ£º
Duplicate method executeUpdate(String, Object[]) in type Overloadtest

executeUpdate("select * from xxx ", (List)list);

ÊÔÊÔ
ÒýÓÃ
executeUpdate("select * from xxx ", (List)list);



Ïà¹ØÎÊ´ð£º

javaÓï·¨ÎÊÌâ - Java / Java EE

import java.io.*;
class FileTest
{
public static void main(String [] args) throws Exception
{

File fDir=new File(File.separator);
String strFile="javaÔ´´úÂë²âÊÔ"+File.separato ......

eclipseÓëmySQLµÄÎÊÌâ - Java / Eclipse

ÔÚ°²×°Java±àÒëÆ÷µÄEclipseµÄʱºò£¬¶Ô»·¾³±äÁ¿½øÐÐÁËÅäÖã¬ÔÚ°²×°MySQlµÄʱºòÒ²Òª¶Ô»·¾³±äÁ¿½øÐÐÅäÖã»ÄÇôºóÃæµÄÅäÖûáÓ°ÏìÇ°ÃæµÄEclipseµÄÅäÖÃÂð£¿
Çë´ó¼Ò¶àÖ¸½Ì~£¡Ð»Ð»£¡
²»»á°Ñ£¬ÎÒÕâ¶¼×°Á赀 ÎÒϵͳÀï »¹×°ÁË ......

java³ÌÐòÁ¬½ÓSQlServerµÄÎÊÌâ - Java / Java SE

import java.sql.Connection;
import java.sql.Date;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class QueryTest&n ......

struts2ʹÓÃajaxµÄÎÊÌâ~~~ - Java / Java EE

ÎÒÏÖÔÚÓÃstruts2¿ò¼Ü,ÐèҪʹÓÃajaxʵÏÖ¾Ö²¿Ë¢Ð£¬µ«ÊÇ´ÓÈÝÆ÷Àï·µ»ØµÄÖµ²»ÖªµÀÔõô´Óstruts.xmlÅäÖÃÎļþÀïÓ³Éäµ½jspÒ³ÃæÀÒÔǰservletÀïдout.orint("xxxxx")¾Í¿ÉÒԵõ½~£¬µ«ÊÇÏÖÔÚÓÃstruts¾Í²»ÖªµÀÔõôР......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ