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

java ¶¯Ì¬´úÀí


1¡¢Ê×ÏȱØÐëÓиö½Ó¿Ú
package reflection;
public interface HelloWorld {
    void sayHelloWorld();
    void testHello(String hello);
}
2¡¢½Ó¿ÚµÄʵÏÖÀà
package reflection;
public class HelloWorldImpl implements HelloWorld {
 public void sayHelloWorld() {
&n ......

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 ......

javaÓëc++Óï·¨Çø±ð

//1.JavaÖÐ×Ö·û´®²»ÄܶàÐÐÊéд¡£¶àÐÐÊéдÓÃÒýºÅ¸ô¶Ï£¬¼ÓºÅÏàÁ¬¡£  
  //2.JavaµÄ±êʶ·û¿ÉÒÔÓÃÃÀÔª·ûºÅ¿ªÍ·¡£  
  //3.JavaÖÐûÓÐÎÞ·ûºÅ±äÁ¿»òÎÞ·ûºÅ³£Á¿µÄ¸ÅÄî¡£ËùÓеıäÁ¿¶¼ÊÇÓзûºÅµÄ¡£  
  //4.JavaÖбäÁ¿µÄ×Ö³¤Êǹ̶¨µÄ¡£²»´æÔÚcharºÍwcharÖ®·Ö¡£  
  //5.JavaÖбäÁ¿Î ......

JAVAÁ¬½ÓÊý¾Ý¿â Oracle

±¾ÎÄÊ×ÏȽéÉÜjavaÁ¬½ÓoracleҪעÒâµÄ¼¸µã£¬È»ºó½éÉܼ¸ÖÖ³£ÓõÄÁ¬½Ó·½Ê½¡£
Ò»¡¢¼¸µã×¢Ò⣺
1¡¢ÔÚ¿Í»§¶ËÈí¼þ¿ª·¢ÖÐʹÓÃThinÇý¶¯³ÌÐò
     ÔÚ¿ª·¢JavaÈí¼þ·½Ã棬OracleµÄÊý¾Ý¿âÌṩÁËËÄÖÖÀàÐ͵ÄÇý¶¯³ÌÐò£¬¶þÖÖÓÃÓÚÓ¦ÓÃÈí¼þ¡¢applets¡¢servletsµÈ¿Í»§¶ËÈí¼þ£¬ÁíÍâ¶þÖÖÓÃÓÚÊý¾Ý¿âÖеÄJava´æ´¢¹ý³ÌµÈ·þÎñÆ ......

javaÅжÏ×ÓÍøÑÚÂë

String[] ips = ipValue.split("\\.");
String binaryVal = "";
for (int i = 0; i < ips.length; i++)
{
String binaryStr = Integer.toBinaryString(Integer.parseInt(ips[i]));


Integer times = 8 - binaryStr.length();
......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ