oracleµ÷ÓÃjava·½·¨µÄÀý×Ó
ÔÚoracleÖе÷ÓÃjava³ÌÐò,×¢Òâ:java·½·¨±ØÐëÊÇstaticÀàÐ͵Ä,Èç¹ûÏëÔÚJAVAÖÐʹÓÃsystem.out/errÊä³ölog.
ÐèÒªÔÚoracle ÖÐÖ´ÐÐ"call dbms_java.set_output(5000);".
Ò»¡¢helloWord
1 ±àдJAVA³ÌÐò,Ò²ÊÇÔÚSQL/PLUSÖÐд,²¢Ö´ÐÐ.
create or replace and compile java source named hello as
public class Hello {
static public String Message(String name) {
return " Hello, " + name;
}
}
/
2 ·¢²¼JAVA³ÌÐò
create or replace function hello (name VARCHAR2 ) return VARCHAR2
as language java name
' Hello.Message (java.lang.String) return java.lang.String ' ;
/
3 ʹÓ÷¢ÃæµÄJAVA³ÌÐò
select hello( ' world! ' ) from dual;
HELLO( ' world! ' )
-- -------------
Hello world!
¶þ¡¢ÔÚJAVA³ÌÐòÖÐʹÓÃSQL
1 ±àдJAVA³ÌÐò
create or replace and compile java source named test as
import java.sql. * ;
import java. text .DateFormat;
import java. text .SimpleDateFormat;
import java.util. * ;
import java.util.Date;
import com.ccit.wcsmp.comm.vo.daovo.MBTResultVO;
import oracle.sql.ARRAY;
import oracle.sql.ArrayDescriptor;
public class Test
{
static public String message(String name) {
String sql = " select sysdate as dd from dual";
String tmpStr = null ;
PreparedStatement pstmt = null ;
ResultSet rs = null ;
Connection conn = null ;
try
 
Ïà¹ØÎĵµ£º
ÆäÊµÕÆÎÕ
MappedByteBuffer
²¢²»ÄÑ£¬Ö»Òª¼Çס“Èý·½Èý·¨ÈýÌØÐÔ”£¨ÎÒ×Ô¼º×ܽáµÄ£¬ºÇºÇ
~~
²»ÒªÈÓ¼¦µ°Å¶¡£¡£¡££©Õâ¾ä»°¾Í¿ÉÒÔÇáËɸ㶨£¡
MappedByteBuffer
Ö»ÊÇÒ»ÖÖÌØÊâµÄ
ByteBuffer
£¬¼´ÊÇ
ByteBuffer
µÄ×ÓÀà¡£
MappedByteBuffer
½«ÎļþÖ±½ÓÓ³Éäµ½Äڴ棨ÕâÀïµÄÄÚ´æÖ¸µÄÊÇÐéÄâÄڴ棬²¢² ......
Ò» Ï̵߳Ļù±¾¸ÅÄî
Ïß³ÌÊÇÒ»¸ö³ÌÐòÄÚ²¿µÄ˳Ðò¿ØÖÆÁ÷.Ò»¸ö½ø³ÌÏ൱ÓÚÒ»¸öÈÎÎñ,Ò»¸öÏß³ÌÏ൱ÓÚÒ»¸öÈÎÎñÖеÄÒ»ÌõÖ´Ðз¾¶.£»¶à½ø³Ì:ÔÚ²Ù×÷ϵͳÖÐÄÜͬʱÔËÐжà¸öÈÎÎñ (³ÌÐò)£»¶àÏß³Ì:ÔÚͬһ¸öÓ¦ÓóÌÐòÖÐÓжà¸ö˳ÐòÁ÷ͬʱִÐУ»JavaµÄÏß³ÌÊÇͨ¹ýjava.lang.ThreadÀàÀ´ÊµÏֵģ»JVMÆô¶¯Ê±»áÓÐÒ»¸öÓÉÖ÷·½·¨(public static voi ......
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import sun.net.TelnetOutputStream;
import sun.net.TelnetInputStream;
import sun.net.ftp.FtpClient;
public class download ...{
& ......
ÕâÀJavaµÄ¶ÁÎļþºÍдÎļþ¶¼ÊÇ»ùÓÚ×Ö·ûÁ÷µÄ£¬Ö÷ÒªÓõ½ÏÂÃæµÄ¼¸¸öÀࣺ
1¡¢FileReader----¶ÁÈ¡×Ö·ûÁ÷
2¡¢FileWriter----дÈë×Ö·ûÁ÷
3¡¢BufferedReader----»º³åÖ¸¶¨ÎļþµÄÊäÈë
¸ÃÀàµÄ·½·¨ÓУº
void close()
¹Ø±Õ¸ÃÁ÷¡£
void mark(int readAhead ......
1¡¢½ø³ÌÓëỊ̈߳º
¡¶1¡·Ê²Ã´Êǽø³Ì£ºÊÇÖ¸ÔËÐÐÖеÄÓ¦ÓóÌÐò£¬Ã¿Ò»¸ö½ø³Ì¶¼ÓÐ×Ô¼º¶ÀÁ¢µÄÄÚ´æ¿Õ¼ä£¬
Ò»¸öÓ¦ÓóÌÐò¿ÉÒÔͬʱÆô¶¯¶à¸ö½ø³Ì£¬(¾²Ì¬)±ÈÈ磨IE£¬JVM£©
¡¶2¡·Ê²Ã´ÊÇỊ̈߳ºÊÇÖ¸½ø³ÌÖеÄÒ»¸öÖ´ÐÐÁ÷³Ì£¬ ......