tracy婷婷
- 浏览: 23480 次
- 性别:
-
文章列表
SQL> set serveroutput on;
SQL> declare
2 num int;
3 begin
4 num := 'ssddfasf';
5 exception
6 when value_error
7 then dbms_output.put_line('----类型错误------');
8 end;
9 /
----类型错误------
P ...
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
public class Hello extends MIDlet {
private Display display=Display.getDisplay(this);
Form form=null ...
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
public class DisplayHello extends MIDlet {
private Display display=Display.getDisplay(this);
Form form=n ...
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Ticker;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
public class TickerTest extends MIDlet {
private Display display=D ...
不同的背景样式
<s:iterator value="book" var="book" status="st">
<s:if test="#st.odd==true">
<tr bgcolor="#999999">
</s:if>
<s:else>
<tr bgcolor="#00FFFF">
</s:e ...
package com.web.struts.action;
import java.io.File;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;
import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.Act ...
<!-- 国际化 -->
<constant name="struts.custom.i18n.resources" value="globalMessages"></constant>
在struts里面写上国际化 在项目界面里面写国际化的内容
中国 zh CN
user.name=登录名
user.pwd=密码
文件名称：globalMessages_zh_CN.properties
美国 en US
user.name=the LoginNameuser. ...
// 获取ACTION上下文
ActionContext context = ActionContext.getContext();
// 获取session
Map session = context.getSession();
购物车
List cart=null;
//初始化购物车
public void initcar(){
cart=(List) session.get("cart");
if(cart==null){
cart=new ArrayList();
}
session.put("cart", ...
SQL> grant create view to scott;
Grant succeeded.
SQL> conn scott/tiger
Connected.
SQL> create or replace view v_emp_deptno as select empno,ename,job,sal from emp where sal>3000;
View created.
SQL> select * from v_emp_deptno;
EMPNO ENAME JOB SAL ...
create or replace trigger over_tir
before insert on tritest
for each row
when (new.stuid<2000)
begin
if :new.sindex>=30 then
raise_application_error(-20001,'超出这个范围');
end if;
end;
/
SQL> edit
Wrote file afiedt.buf
1 declare
2 type curemptype is ref cursor;
3 curemp_ref curemptype;
4 command char(1);
5 currow emp%rowtype;
6 theename emp.ename%type;
7 begin
8 dbms_output.put_line('请输入操作命令：1-查找deptno=30的员工姓名；2查找job=manager的员工信息');
9 ...
SQL> create sequence stuid
2 increment by 1
3 start with 1
4 nomaxvalue
5 nocycle
6 cache 10;
Sequence created.
SQL> select stuid.nextval from T_student;
NEXTVAL
----------
1
SQL> select stuid .currval from T_student;
CURRV ...
第一步：
需要的8个导包
commons-fileupload-1.2.2.jar
commons-io-2.0.1.jar
commons-lang3-3.1.jar
freemarker-2.3.19.jar
ognl-3.0.6.jar
struts2-core -2.3.8.jar
xwork-core-2.3.8.jar
javassist-lang3-3.1.jar
第二步
在web.xml里面需要写入的文件
<filter>
<filter-name>struts2</filter-name> ...
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
& ...
create database demodb_info
go
USE demodb_info
GO
--drop database demodb_info
/****** Object: Table [dbo].[t_book] Script Date: 12/13/2012 17:28:38 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
--drop table [dbo].[t_book]
CREATE TABLE [dbo].[t_ ...