java存储过程的创建与调用
create or replace procedure updateProject is
begin
update project p set p.total_intend_gather =
(select sum(ig.gather_sum) from intend_gather ig where ig.project_number=p.project_number);
update project p set p.total_actual_gather =
(select sum(ag.gahter_sum) from actual_gather ag where ag.project_number=p.project_number);
update project p set p.total_invoice=
(select sum(invoice.invoice_sum) from invoice invoice
where invoice.intend_id in
(select ig.intend_id from intend_gather ig where ig.project_number=p.project_number));
end updateProject;
Session session = this.getSession();
Transaction tx =null;
try {
tx = session.beginTransaction();
Connection con = session.connection();
String procedure = "{call updateproject() }";
CallableStatement cstmt = con.prepareCall(procedure);
cstmt.executeUpdate();
tx.commit();
} catch (Exception e) {
tx.rollback();
}
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测试环境:win2000+jdk1.4+jb2006
import java.io.*;
import java.util.Enumeration;
//import java.util.zip.*;
import org.apache.tools.zip.*;
public class Test {
//解压文件
public static void extZipFileList(String zipFileName, String extPlace) {
try {
  ......
今天遇到一个很诡异的bug,调试了半天也没有看出来有什么问题,抽象一下代码如下:
public class Instance
{
public static Instance instance = new Instance();
public static Map<String, String> map = new HashMap<String, String>();
public static Instance instance()
{
r ......
最近在开发一个小的ESB系统,会在这里粘一些觉得会用的到的文章。
出自:www.ibm.com.cn MattTowers 2002年10月08日
摘要
使用 HTTPS(Hypertext Transfer Protocol Secure 安全超文本传输协议)并非你所想的那样简单直接。如果你曾经尝试在 Java 客户端和 HTTPS 服务器之间进行安全的通 ......
http://java.sun.com/javase/technologies/hotspot/vmoptions.jsp
Categories of Java HotSpot VM Options
Standard options recognized by the Java HotSpot VM are described on the Java Application Launcher reference pages for Windows
, Solaris
and Linux
. This document deals exclusively wit ......
System.out.println(2|0); //0010 0000 =>0010 = 2
System.out.println(2|1); //0010 0001 =>0011 = 3
System.out.println(3|2); //0011 0010 =>0011 = 3
System.out.println(3&2); //0011 0010 =>0010 = 2
/*
在java中0代表假, 1代表真
00011|0010 从右到左比较0|1 = 1, 1|0 = ......