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

JAVA Á¬½Ó³Ø BoneCP ²âÊÔ£¨2£© with spring 3

¶îÍâJAR°ü£º
org.springframework.expression-3.0.1.RELEASE.jar
org.springframework.asm-3.0.1.RELEASE.jar
org.springframework.beans-3.0.1.RELEASE.jar
p:statementCacheSize="100"
<bean id="masterDataSource" class="com.jolbox.bonecp.BoneCPDataSource" destroy-method="close"
p:driverClass="com.mysql.jdbc.Driver" 
p:jdbcUrl="jdbc:mysql://localhost/pesdog?autoReconnectForPools=true&amp;autoReconnect=true&amp;characterEncoding=utf-8" 
p:username="root" p:password="" 
p:idleConnectionTestPeriod="60" p:idleMaxAge="240"
p:maxConnectionsPerPartition="30" p:minConnectionsPerPartition="10"
p:partitionCount="3" p:acquireIncrement="5" 
p:releaseHelperThreads="3"
/>
<context:annotation-config/><bean id="foo" class="test.Foo">
</bean>
public static void main(String[] args){
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");

Foo foo = (Foo)context.getBean("foo");


try{
foo.test();
}catch(Exception ex){
ex.printStackTrace();
}


}
@Component
public class Foo {
// @Autowired
private DataSource masterDataSource;
public DataSource getMasterDataSource() {
return masterDataSource;
}
@Required
@Autowired
public void setMasterDataSource(DataSource masterDataSource) {
this.masterDataSource = masterDataSource;
}

public void test() throws Exception{
Connection cn = this.masterDataSource.getConnection();
Statement stmt = cn.createStatement();

String sql = "select username,loginid from sys_user";

System.out.println(sql);
ResultSet rs = stmt.executeQuery(sql);
while(rs.next()){
System.out.println(rs.getString("username"));
System.out.println(rs.getString("loginid"));
}
}

}


Ïà¹ØÎĵµ£º

javaѧϰ±Ê¼Ç 2.»ù±¾Êý¾ÝÀàÐÍ

1.ÕûÊý
byte    1×Ö½Ú
short   2×Ö½Ú
int      4×Ö½Ú
long    8×Ö½Ú
2.¸¡µã
float
double
Ìáʾ
£¨1£© ¸¡µãÐ͵ÄÖµ£¬Èç¹ûûÓÐÌØ±ðÖ¸Ã÷£¬Ä¬ÈÏÊÇ double Ð͵Ä
£¨2£© ¶¨Òå float Ð͵Äʱºò£¬Ò»¶¨ÒªÖ¸Ã÷ÊÇ float Ð͵ģ¬¿ÉÒÔͨ¹ýÔÚÊý×ÖºóÃæÌí¼Ó&rd ......

ÍÆ¼ö¼¸¸öjavaÑ§Ï°ÍøÕ¾

ÍÆ¼ö¼¸¸öjavaÑ§Ï°ÍøÕ¾
Java´úÂë²éѯվµã S+\s4hh@k  
1. java2s http://www.java2s.com/ PeYmf1ox  
Õâ¸öÍøÕ¾·Ç³£ºÃ£¬·Ö³ÉÈý´óÀ࣬·Ö±ðÊÇExample¡¢Products¡¢ Articles£¬Ã¿¸ö´óÀàÏÂÓÖ·Ö±ðÉèÐí¶àСÀ࣬»¹ÓÐËÑË÷¹¦ÄÜ£¬ÕâÑù²éÕÒÆðÀ´·Ç³£·½±ã¡£¡£±ÈÈ磬Èç¹ûҪѧϰSWT/JFace£¬Ö»Òª°ÑExampleϵÄSWT JFace Eclipse ......

ÈçºÎÓ¦ÓÃJavaµÄBigDecimalÀà

±¾ÎĽéÉÜJavaµÄBigDecimalÀàµÄÓ¦Óá£JavaÔÚjava.math°üÖÐÌṩµÄAPIÀàBigDecimal£¬ÓÃÀ´¶Ô³¬¹ý16λÓÐЧλµÄÊý½øÐо«È·µÄÔËËã¡£
BigDecimalÀà
Ë«¾«¶È¸¡µãÐͱäÁ¿double¿ÉÒÔ´¦Àí16λÓÐЧÊý¡£ÔÚʵ¼ÊÓ¦ÓÃÖУ¬ÐèÒª¶Ô¸ü´ó»òÕ߸üСµÄÊý½øÐÐÔËËãºÍ´¦Àí¡£JavaÔÚjava.math°üÖÐÌṩµÄAPIÀàBigDecimal£¬ÓÃÀ´¶Ô³¬¹ý16λÓÐЧλµÄÊý½øÐо«È· ......

JavaÓïÑÔ»ù´¡ÖªÊ¶

JavaÓïÑÔ»ù´¡ÖªÊ¶
³ÌÐòÔ±¶Ô³ÌÐòÖеĸ÷¸öÔªËØ¼ÓÒÔÃüÃûʱʹÓõÄÃüÃû¼ÇºÅ³ÆÎª±êʶ·û£¨identifier£©¡£
JavaÓïÑÔÖУ¬±êʶ·ûÊÇÒÔ×Öĸ£¬Ï»®Ïߣ¨_£©,ÃÀÔª·û($)¿ªÊ¼µÄÒ»¸ö×Ö·ûÐòÁУ¬ºóÃæ¿ÉÒÔ¸ú×Öĸ£¬Ï»®Ïߣ¬ÃÀÔª·û£¬Êý×Ö¡£
ÀýÈ磬identifier£¬userName£¬User_Name£¬_sys_val£¬ $changeΪºÏ·¨µÄ±êʶ·û£¬¶ø2mail room#£¬class Ϊ· ......

java ½âѹËõzipÎļþ

²âÊÔ»·¾³£ºwin2000+jdk1.4+jb2006
 import java.io.*;
import java.util.Enumeration;
//import java.util.zip.*;
import org.apache.tools.zip.*;
public class Test {
//½âѹÎļþ
  public static void extZipFileList(String zipFileName, String extPlace) {
    try {
   ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ