Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

java ·¾¶ classpath


¹éÄÉһЩÍøÉÏÈ¡JAVA·¾¶µÄ·½·¨£º
    ×¢Ã÷£ºÈç¹û´ÓANTÆô¶¯³ÌÐò£¬this.getClass().getResource("")È¡³öÀ´µÄ±È½Ï¹Ö£¬Ö±½ÓÓÃJAVAÃüÁîÐе÷ÊԾͿɳɹ¦¡£
    µÃµ½classpathºÍµ±Ç°ÀàµÄ¾ø¶Ô·¾¶µÄһЩ·½·¨
    »ñµÃCLASSPATHÖ®Íâ·¾¶µÄ·½·¨£º
URL
base = this.getClass£¨£©.getResource£¨""£©£»
//ÏÈ»ñµÃ±¾ÀàµÄËùÔÚλÖã¬Èç/home/popeye/testjava/build/classes/net/ String path =
new File£¨base.getFile£¨£©£¬ "……/……/……/"+name£©.getCanonicalPath£¨£©£»
//¾Í¿ÉÒԵõ½/home/popeye/testjava/name
    ÏÂÃæÊÇһЩµÃµ½classpathºÍµ±Ç°ÀàµÄ¾ø¶Ô·¾¶µÄһЩ·½·¨¡£Äã¿ÉÄÜÐèҪʹÓÃÆäÖеÄһЩ·½·¨À´µÃµ½ÄãÐèÒªµÄ×ÊÔ´µÄ¾ø¶Ô·¾¶¡£
    1.FileTest.class.getResource£¨""£©
    µÃµ½µÄÊǵ±Ç°ÀàFileTest.classÎļþµÄURIĿ¼¡£²»°üÀ¨×Ô¼º£¡
    È磺file£º/D£º/java/eclipse32/workspace/jbpmtest3/bin/com/test/
    2.FileTest.class.getResource£¨"/"£©
    µÃµ½µÄÊǵ±Ç°µÄclasspathµÄ¾ø¶ÔURI·¾¶¡£
    È磺file£º/D£º/java/eclipse32/workspace/jbpmtest3/bin/
    3.Thread.currentThread£¨£©.getContextClassLoader£¨£©.getResource£¨""£©
    µÃµ½µÄÒ²Êǵ±Ç°ClassPathµÄ¾ø¶ÔURI·¾¶¡£
    È磺file£º/D£º/java/eclipse32/workspace/jbpmtest3/bin/
    4.FileTest.class.getClassLoader£¨£©.getResource£¨""£©
    µÃµ½µÄÒ²Êǵ±Ç°ClassPathµÄ¾ø¶ÔURI·¾¶¡£
    È磺file£º/D£º/java/eclipse32/workspace/jbpmtest3/bin/
    5.ClassLoader.getSystemResource£¨""£©
    µÃµ½µÄÒ²Êǵ±Ç°ClassPathµÄ¾ø¶ÔURI·¾¶¡£
    È磺file£º/D£º/java/eclipse32/workspace/jbpmtest3/bin/
    ÎÒÍƼöʹÓÃThread.currentThread£¨£©.getContextClassLoader£¨£©.getResource£¨""£©À´µÃµ½µ±Ç°µÄclasspathµÄ¾ø¶Ô·¾¶µÄURI±íʾ·¨¡£
    ÔÚWebÓ¦ÓóÌÐòÖУ¬ÎÒÃÇÒ»°ãͨ¹ý


Ïà¹ØÎĵµ£º

sql 2005 ´æ´¢¹ý³Ì·ÖÒ³ java ´úÂë

 create PROCEDURE pagelist
@tablename nvarchar(50),
@fieldname nvarchar(50)='*',         
@pagesize int output,--ÿҳÏÔʾ¼Ç¼ÌõÊý
@currentpage int output,--µÚ¼¸Ò³
@orderid nvarchar(50),--Ö÷¼üÅÅÐò
@sort int,--ÅÅÐò·½Ê½£¬1±íʾÉýÐò£¬0±íʾ½µÐòÅÅÁÐ ......

ÔÚJAVA Ô´³ÌÐòÖбàдSQLÓï¾äʱʹÓÃORACLE °ó¶¨±äÁ¿

ÔÚJAVAÖеÄSQL Óï¾äµÄ±àд·½Ã棬ûÓÐʹÓÃORACLE °ó¶¨±äÁ¿£¬ºÜ´ó³Ì¶ÈÉϽµµÍÁËÊý¾Ý¿âµÄÐÔÄÜ£¬±íÏÖÔÚÁ½¸ö·½Ã棺
 
1¡¢SQLÓï¾äÓ²·ÖÎö(Hard Parse)Ì«¶à£¬ÑÏÖØÏûºÄCPU×ÊÔ´£¬ÑÓ³¤ÁËSQLÓï¾ä×ܵÄÖ´ÐÐʱ¼ä
SQLÓï¾äµÄÖ´Ðйý³Ì·Ö¼¸¸ö²½Ö裺Óï·¨¼ì²é¡¢·ÖÎö¡¢Ö´ÐС¢·µ»Ø½á¹û¡£ÆäÖзÖÎöÓÖ·ÖΪӲ·ÖÎö(Hard Parse)ºÍÈí·ÖÎö(Soft Pars ......

ÓÃJAVAдÈëºÍ¶ÁÈ¡MYSQLµÄͼƬµÄʵÀý

Ö÷ÒªµÄ³ÌÐò£º
package greeds.jdbc.sample;
import greeds.jdbc.util.JDBCUtil;
import java.io.*;
import java.sql.*;
public class MySQLBlobSample {
 public static void main(String[] args) throws Exception {
  // дÈëÊý¾Ý¿â
  /*
   *
   * Connection ......

javaÊý¾Ý¿âÉè¼ÆÖеÄ14¸ö¼¼ÇÉ

  ÏÂÊöÊ®Ëĸö¼¼ÇÉ£¬ÊÇÐí¶àÈËÔÚ´óÁ¿µÄÊý¾Ý¿â·ÖÎöÓëÉè¼Æʵ¼ùÖУ¬Öð²½×ܽá³öÀ´µÄ¡£¶ÔÓÚÕâЩ¾­ÑéµÄÔËÓ㬶ÁÕß²»ÄÜÉú°ïÓ²Ì×£¬ËÀ¼ÇÓ²±³£¬¶øÒªÏû»¯Àí½â£¬ÊµÊÂÇóÊÇ£¬Áé»îÕÆÎÕ¡£²¢Öð²½×öµ½£ºÔÚÓ¦ÓÃÖз¢Õ¹£¬ÔÚ·¢Õ¹ÖÐÓ¦Óá£
      1. ԭʼµ¥¾ÝÓëʵÌåÖ®¼äµÄ¹Øϵ
¡¡¡¡
    &nbs ......

Java×Ö·û´®Óë×Ö·û¼¯µÄ»ù±¾¸ÅÄî


±¾×÷Æ·²ÉÓÃ֪ʶ¹²ÏíÊðÃû-·ÇÉÌÒµÐÔʹÓÃ-Ïàͬ·½Ê½¹²Ïí 2.5 Öйú´ó½Ðí¿ÉЭÒé½øÐÐÐí¿É¡£
Java StringÊÇJava APIÖÐ×î³£ÓõÄÀ࣬±¾Îĺʹó¼Ò̸̸StringÀàµÄÄÚ²¿Ô­Àí£¬Í¬Ê±ÃèÊöISO-8859-1×Ö·û¼¯ÔÚ×Ö·û´®´¦ÀíÖеĶÀÌØÓô¦¡£ 
Java×Ö·û´®µÄÄÚ²¿±àÂë
StringÀàÄÚ²¿¹ÜÀí×ÅÒ»¸öcharÀàÐ͵ÄÊý×飬Java APIÊÇÕâÑùÃèÊöchar»ù±¾ÀàÐ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ