说明åQšå¤åˆ¶è¡¨(åªå¤åˆ¶ç»“æž?æºè¡¨å：a 新表å：b)
select * into b from a where 1<>1
说明åQšæ‹·è´è¡¨(拯‚´æ•°æ®,æºè¡¨å：a ç›®æ ‡è¡¨ååQšb)
insert into b(a, b, c) select d,e,f from b;
说明åQšæ˜¾½Cºæ–‡ç« ã€æ交äh和最åŽå›žå¤æ—¶é—?br />select a.title,a.username,b.adddate from table a,(select max(adddate) adddate from table where table.title=a.title) b
说明åQšå¤–˜qžæŽ¥æŸ¥è¯¢(表å1åQša 表å2åQšb)
select a.a, a.b, a.c, b.c, b.d, b.f from a LEFT OUT JOIN b ON a.a = b.c
说明åQšæ—¥½E‹å®‰æŽ’æå‰äº”分钟æ醒
select * from 日程安排 where datediff('minute',f开始时�getdate())>5
说明åQšä¸¤å¼ å…³è”表åQŒåˆ 除主表ä¸å·²ç»åœ¨å‰¯è¡¨ä¸æ²¡æœ‰çš„ä¿¡æ?br />delete from info where not exists ( select * from infobz where info.infid=infobz.infid )
说明åQ?-
SQL:
SELECT A.NUM, A.NAME, B.UPD_DATE, B.PREV_UPD_DATE
FROM TABLE1,
(SELECT X.NUM, X.UPD_DATE, Y.UPD_DATE PREV_UPD_DATE
FROM (SELECT NUM, UPD_DATE, INBOUND_QTY, STOCK_ONHAND
FROM TABLE2
WHERE TO_CHAR(UPD_DATE,'YYYY/MM') = TO_CHAR(SYSDATE, 'YYYY/MM')) X,
(SELECT NUM, UPD_DATE, STOCK_ONHAND
FROM TABLE2
WHERE TO_CHAR(UPD_DATE,'YYYY/MM') =
TO_CHAR(TO_DATE(TO_CHAR(SYSDATE, 'YYYY/MM') || '/01','YYYY/MM/DD') - 1, 'YYYY/MM') ) Y,
WHERE X.NUM = Y.NUM åQ?åQ?
AND X.INBOUND_QTY + NVL(Y.STOCK_ONHAND,0) <> X.STOCK_ONHAND ) B
WHERE A.NUM = B.NUM
说明åQ?-
select * from studentinfo where not exists(select * from student where studentinfo.id=student.id) and ¾pÕd¿U?'"&strdepartmentname&"' and 专业å称='"&strprofessionname&"' order by 性别,生æºåœ?高考æ€ÀLˆ¾l?br />
从数æ®åº“ä¸åŽ»ä¸€òq´çš„å„å•ä½ç”µè¯è´¹¾lŸè®¡(电è¯è´¹å®šé¢è´ºç”µåŒ–肥清å•ä¸¤ä¸ªè¡¨æ¥æºåQ?
SELECT a.userper, a.tel, a.standfee, TO_CHAR(a.telfeedate, 'yyyy') AS telyear,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '01', a.factration)) AS JAN,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '02', a.factration)) AS FRI,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '03', a.factration)) AS MAR,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '04', a.factration)) AS APR,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '05', a.factration)) AS MAY,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '06', a.factration)) AS JUE,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '07', a.factration)) AS JUL,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '08', a.factration)) AS AGU,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '09', a.factration)) AS SEP,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '10', a.factration)) AS OCT,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '11', a.factration)) AS NOV,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '12', a.factration)) AS DEC
FROM (SELECT a.userper, a.tel, a.standfee, b.telfeedate, b.factration
FROM TELFEESTAND a, TELFEE b
WHERE a.tel = b.telfax) a
GROUP BY a.userper, a.tel, a.standfee, TO_CHAR(a.telfeedate, 'yyyy')
说明åQšå››è¡¨è”查问é¢?br />select * from a left inner join b on a.a=b.b right inner join c on a.a=c.c inner join d on a.a=d.d where .....
说明åQšå¾—到表ä¸æœ€ž®çš„未ä‹É用的IDå?br />
SELECT (CASE WHEN EXISTS(SELECT * FROM Handle b WHERE b.HandleID = 1) THEN MIN(HandleID) + 1 ELSE 1 END) as HandleID FROM Handle WHERE NOT HandleID IN (SELECT a.HandleID - 1 FROM Handle a)
一个SQLè¯å¥çš„é—®é¢?行列转æ¢
select * from v_temp
上é¢çš„视囄¡»“果如ä¸?
user_name role_name
-------------------------
¾pÈ»Ÿ½Ž¡ç†å‘?½Ž¡ç†å‘?
feng ½Ž¡ç†å‘?
feng 一般用�
test 一般用�
æƒÏxŠŠ¾l“æžœå˜æˆ˜q™æ ·:
user_name role_name
---------------------------
¾pÈ»Ÿ½Ž¡ç†å‘?½Ž¡ç†å‘?
feng ½Ž¡ç†å‘?一般用æˆ?
test 一般用�br />===================
create table a_test(name varchar(20),role2 varchar(20))
insert into a_test values('æ?,'½Ž¡ç†å‘?)
insert into a_test values('å¼?,'½Ž¡ç†å‘?)
insert into a_test values('�,'一般用�)
insert into a_test values('�,'一般用�)
create function join_str(@content varchar(100))
returns varchar(2000)
as
begin
declare @str varchar(2000)
set @str=''
select @str=@str+','+rtrim(role2) from a_test where [name]=@content
select @str=right(@str,len(@str)-1)
return @str
end
go
--调用åQ?br />select [name],dbo.join_str([name]) role2 from a_test group by [name]
--select distinct name,dbo.uf_test(name) from a_test
快速比较结构相åŒçš„两表
¾l“构相åŒçš„两表，一表有记录3万æ¡å·¦å³åQŒä¸€è¡¨æœ‰è®°å½•2万æ¡å·¦å³åQŒæˆ‘æ€Žæ ·å¿«é€ŸæŸ¥æ‰¾ä¸¤è¡¨çš„ä¸åŒè®°å½•åQ?br />============================
¾l™ä½ 一个测试方法，从northwindä¸çš„orders表å–æ•°æ®ã€?br />select * into n1 from orders
select * into n2 from orders
select * from n1
select * from n2
--æ·ÕdŠ 主键åQŒç„¶åŽä¿®æ”¹n1ä¸è‹¥òq²å—ŒD늚„若干æ?br />alter table n1 add constraint pk_n1_id primary key (OrderID)
alter table n2 add constraint pk_n2_id primary key (OrderID)
select OrderID from (select * from n1 union select * from n2) a group by OrderID having count(*) > 1
应该å¯ä»¥åQŒè€Œä¸”ž®†ä¸åŒçš„记录的ID昄¡¤ºå‡ºæ¥ã€?br />下é¢çš„适用于åŒæ–¹è®°å½•ä¸€æ ïLš„情况åQ?br />
select * from n1 where orderid in (select OrderID from (select * from n1 union select * from n2) a group by OrderID having count(*) > 1)
至于åŒæ–¹äº’ä¸å˜åœ¨çš„记录是比较好处ç†çš„
--åˆ é™¤n1,n2ä¸è‹¥òq²æ¡è®°å½•
delete from n1 where orderID in ('10728','10730')
delete from n2 where orderID in ('11000','11001')
--*************************************************************
-- åŒæ–¹éƒ½æœ‰è¯¥è®°å½•å´ä¸å®Œå…¨ç›¸å?br />select * from n1 where orderid in(select OrderID from (select * from n1 union select * from n2) a group by OrderID having count(*) > 1)
union
--n2ä¸å˜åœ¨ä½†åœ¨n1ä¸ä¸å˜çš„åœ?0728,10730
select * from n1 where OrderID not in (select OrderID from n2)
union
--n1ä¸å˜åœ¨ä½†åœ¨n2ä¸ä¸å˜çš„åœ?1000,11001
select * from n2 where OrderID not in (select OrderID from n1)
å››ç§æ–ÒŽ³•å–表里n到mæ¡çºªå½•ï¼š
1.
select top m * into 临时è¡?或表å˜é‡) from tablename order by columnname -- ž®†top m½W”æ’å…?br />set rowcount n
select * from 表å˜é‡?order by columnname desc
2.
select top n * from (select top m * from tablename order by columnname) a order by columnname desc
3.如果tablename里没有其他identity列，那么åQ?br />select identity(int) id0,* into #temp from tablename
å–n到mæ¡çš„è¯å¥ä¸ºï¼š
select * from #temp where id0 >=n and id0 <= m
å¦‚æžœä½ åœ¨æ‰§è¡Œselect identity(int) id0,* into #temp from tablename˜q™æ¡è¯å¥çš„时候报é”?é‚£æ˜¯å› äØ“ä½ çš„DBä¸é—´çš„select into/bulkcopy属性没有打开è¦å…ˆæ‰§è¡ŒåQ?br />exec sp_dboption ä½ çš„DBåå—,'select into/bulkcopy',true
4.如果表里有identity属性，那么½Ž€å•ï¼š
select * from tablename where identitycol between n and m
å¦‚ä½•åˆ é™¤ä¸€ä¸ªè¡¨ä¸é‡å¤çš„记录åQ?br />create table a_dist(id int,name varchar(20))
insert into a_dist values(1,'abc')
insert into a_dist values(1,'abc')
insert into a_dist values(1,'abc')
insert into a_dist values(1,'abc')
exec up_distinct 'a_dist','id'
select * from a_dist
create procedure up_distinct(@t_name varchar(30),@f_key varchar(30))
--f_key表示是分¾l„å—ŒDµï¹å³ä¸»é”®å—ŒD?br />as
begin
declare @max integer,@id varchar(30) ,@sql varchar(7999) ,@type integer
select @sql = 'declare cur_rows cursor for select '+@f_key+' ,count(*) from ' +@t_name +' group by ' +@f_key +' having count(*) > 1'
exec(@sql)
open cur_rows
fetch cur_rows into @id,@max
while @@fetch_status=0
begin
select @max = @max -1
set rowcount @max
select @type = xtype from syscolumns where id=object_id(@t_name) and name=@f_key
if @type=56
select @sql = 'delete from '+@t_name+' where ' + @f_key+' = '+ @id
if @type=167
select @sql = 'delete from '+@t_name+' where ' + @f_key+' = '+''''+ @id +''''
exec(@sql)
fetch cur_rows into @id,@max
end
close cur_rows
deallocate cur_rows
set rowcount 0
end
select * from systypes
select * from syscolumns where id = object_id('a_dist')
查询数æ®çš„最大排åºé—®é¢˜ï¼ˆåªèƒ½ç”¨ä¸€æ¡è¯å¥å†™åQ?
CREATE TABLE hard (qu char (11) ,co char (11) ,je numeric(3, 0))
insert into hard values ('A','1',3)
insert into hard values ('A','2',4)
insert into hard values ('A','4',2)
insert into hard values ('A','6',9)
insert into hard values ('B','1',4)
insert into hard values ('B','2',5)
insert into hard values ('B','3',6)
insert into hard values ('C','3',4)
insert into hard values ('C','6',7)
insert into hard values ('C','2',3)
è¦æ±‚查询出æ¥çš„结果如下：
qu co je
----------- ----------- -----
A 6 9
A 2 4
B 3 6
B 2 5
C 6 7
C 3 4
ž®±æ˜¯è¦æŒ‰qu分组åQŒæ¯¾l„ä¸å–je最大的å‰?ä½ï¼åQ?br />而且åªèƒ½ç”¨ä¸€å¥sqlè¯å¥åQï¼åQ?br />select * from hard a where je in (select top 2 je from hard b where a.qu=b.qu order by je)
æ±‚åˆ é™¤é‡å¤è®°å½•çš„sqlè¯å¥åQ?
æ€Žæ ·æŠŠå…·æœ‰ç›¸åŒå—ŒD늚„¾Uªå½•åˆ 除åQŒåªç•™ä¸‹ä¸€æ¡ã€?br />例如åQŒè¡¨test里有id,nameå—段
如果有name相åŒçš„è®°å½?åªç•™ä¸‹ä¸€æ¡ï¼Œå…¶ä½™çš„åˆ é™¤ã€?br />name的内容ä¸å®šï¼Œç›¸åŒçš„记录数ä¸å®šã€?br />有没有这æ ïLš„sqlè¯å¥åQ?br />==============================
A:一个完整的解决æ–ÒŽ¡ˆåQ?br />
ž®†é‡å¤çš„记录记入temp1è¡?
select [æ ‡å¿—å—段id],count(*) into temp1 from [表å]
group by [æ ‡å¿—å—段id]
having count(*)>1
2ã€å°†ä¸é‡å¤çš„记录记入temp1è¡?
insert temp1 select [æ ‡å¿—å—段id],count(*) from [表å] group by [æ ‡å¿—å—段id] having count(*)=1
3ã€ä½œä¸€ä¸ªåŒ…å«æ‰€æœ‰ä¸é‡å¤è®°å½•çš„表åQ?br />select * into temp2 from [表å] where æ ‡å¿—å—段id in(select æ ‡å¿—å—段id from temp1)
4ã€åˆ 除é‡å¤è¡¨:
delete [表å]
5ã€æ¢å¤è¡¨åQ?br />insert [表å] select * from temp2
6ã€åˆ 除äÍ时表:
drop table temp1
drop table temp2
================================
B:
create table a_dist(id int,name varchar(20))
insert into a_dist values(1,'abc')
insert into a_dist values(1,'abc')
insert into a_dist values(1,'abc')
insert into a_dist values(1,'abc')
exec up_distinct 'a_dist','id'
select * from a_dist
create procedure up_distinct(@t_name varchar(30),@f_key varchar(30))
--f_key表示是分¾l„å—ŒDµï¹å³ä¸»é”®å—ŒD?br />as
begin
declare @max integer,@id varchar(30) ,@sql varchar(7999) ,@type integer
select @sql = 'declare cur_rows cursor for select '+@f_key+' ,count(*) from ' +@t_name +' group by ' +@f_key +' having count(*) > 1'
exec(@sql)
open cur_rows
fetch cur_rows into @id,@max
while @@fetch_status=0
begin
select @max = @max -1
set rowcount @max
select @type = xtype from syscolumns where id=object_id(@t_name) and name=@f_key
if @type=56
select @sql = 'delete from '+@t_name+' where ' + @f_key+' = '+ @id
if @type=167
select @sql = 'delete from '+@t_name+' where ' + @f_key+' = '+''''+ @id +''''
exec(@sql)
fetch cur_rows into @id,@max
end
close cur_rows
deallocate cur_rows
set rowcount 0
end
select * from systypes
select * from syscolumns where id = object_id('a_dist')
行列转æ¢--æ™®é€?
å‡è®¾æœ‰å¼ å¦ç”Ÿæˆç‡Wè¡?CJ)如下
Name Subject Result
å¼ ä¸‰ è¯æ–‡ 80
å¼ ä¸‰ æ•°å¦ 90
å¼ ä¸‰ ç‰©ç† 85
æŽå›› è¯æ–‡ 85
æŽå›› æ•°å¦ 92
æŽå›› ç‰©ç† 82
惛_˜æˆ?
姓å è¯æ–‡ æ•°å¦ ç‰©ç†
å¼ ä¸‰ 80 90 85
æŽå›› 85 92 82
declare @sql varchar(4000)
set @sql = 'select Name'
select @sql = @sql + ',sum(case Subject when '''+Subject+''' then Result end) ['+Subject+']'
from (select distinct Subject from CJ) as a
select @sql = @sql+' from test group by name'
exec(@sql)
行列转æ¢--åˆåƈ
有表A,
id pid
1 1
1 2
1 3
2 1
2 2
3 1
如何化æˆè¡¨B:
id pid
1 1,2,3
2 1,2
3 1
创å¾ä¸€ä¸ªåˆòq¶çš„函数
create function fmerg(@id int)
returns varchar(8000)
as
begin
declare @str varchar(8000)
set @str=''
select @str=@str+','+cast(pid as varchar) from 表A where id=@id
set @str=right(@str,len(@str)-1)
return(@str)
End
go
--调用自定义函数得到结�
select distinct id,dbo.fmerg(id) from 表A
如何å–得一个数æ®è¡¨çš„所有列å?
æ–ÒŽ³•å¦‚下åQšå…ˆä»ŽSYSTEMOBJECT¾pÈ»Ÿè¡¨ä¸å–å¾—æ•°æ®è¡¨çš„SYSTEMID,然åŽå†SYSCOLUMN表ä¸å–得该数æ®è¡¨çš„所有列åã€?
SQLè¯å¥å¦‚下åQ?
declare @objid int,@objname char(40)
set @objname = 'tablename'
select @objid = id from sysobjects where id = object_id(@objname)
select 'Column_name' = name from syscolumns where id = @objid order by colid
�br />
SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME ='users'
通过SQLè¯å¥æ¥æ›´æ”¹ç”¨æˆïLš„密ç
修改别ähçš?需è¦sysadmin role
EXEC sp_password NULL, 'newpassword', 'User'
如果å¸å·ä¸ºSA执行EXEC sp_password NULL, 'newpassword', sa
怎么判æ–å‡ÞZ¸€ä¸ªè¡¨çš„哪些嗌Dµä¸å…许为空åQ?
select COLUMN_NAME from INFORMATION_SCHEMA.COLUMNS where IS_NULLABLE='NO' and TABLE_NAME=tablename
如何在数æ®åº“里找到å«æœ‰ç›¸åŒå—ŒD늚„表？
a. 查已知列å的情况
SELECT b.name as TableName,a.name as columnname
From syscolumns a INNER JOIN sysobjects b
ON a.id=b.id
AND b.type='U'
AND a.name='ä½ çš„å—段åå—'
未知列å查所有在ä¸åŒè¡¨å‡ºçŽ°è¿‡çš„列å?
Select o.name As tablename,s1.name As columnname
From syscolumns s1, sysobjects o
Where s1.id = o.id
And o.type = 'U'
And Exists (
Select 1 From syscolumns s2
Where s1.name = s2.name
And s1.id <> s2.id
)
查询½W¬xxx行数æ?
å‡è®¾id是主键：
select * from (select top xxx * from yourtable) aa where not exists(select 1 from (select top xxx-1 * from yourtable) bb where aa.id=bb.id)
å¦‚æžœä½¿ç”¨æ¸¸æ ‡ä¹Ÿæ˜¯å¯ä»¥çš?
fetch absolute [number] from [cursor_name]
行数为ç»å¯¹è¡Œæ•?
SQL Server日期计算
a. 一个月的第一�
SELECT DATEADD(mm, DATEDIFF(mm,0,getdate()), 0)
b. 本周的星期一
SELECT DATEADD(wk, DATEDIFF(wk,0,getdate()), 0)
c. 一òq´çš„½W¬ä¸€å¤?
SELECT DATEADD(yy, DATEDIFF(yy,0,getdate()), 0)
d. å£åº¦çš„第一å¤?
SELECT DATEADD(qq, DATEDIFF(qq,0,getdate()), 0)
e. 上个月的最åŽä¸€å¤?
SELECT dateadd(ms,-3,DATEADD(mm, DATEDIFF(mm,0,getdate()), 0))
f. åŽÕd¹´çš„最åŽä¸€å¤?
SELECT dateadd(ms,-3,DATEADD(yy, DATEDIFF(yy,0,getdate()), 0))
g. 本月的最åŽä¸€å¤?
SELECT dateadd(ms,-3,DATEADD(mm, DATEDIFF(m,0,getdate())+1, 0))
h. 本月的第一个星期一
select DATEADD(wk, DATEDIFF(wk,0,
dateadd(dd,6-datepart(day,getdate()),getdate())
), 0)
i. 本年的最åŽä¸€å¤?
SELECT dateadd(ms,-3,DATEADD(yy, DATEDIFF(yy,0,getdate())+1, 0))�
获å–表结构[æŠ?'sysobjects' æ›¿æ¢ æˆ?'tablename' å›_¯]
SELECT CASE IsNull(I.name, '')
When '' Then ''
Else '*'
End as IsPK,
Object_Name(A.id) as t_name,
A.name as c_name,
IsNull(SubString(M.text, 1, 254), '') as pbc_init,
T.name as F_DataType,
CASE IsNull(TYPEPROPERTY(T.name, 'Scale'), '')
WHEN '' Then Cast(A.prec as varchar)
ELSE Cast(A.prec as varchar) + ',' + Cast(A.scale as varchar)
END as F_Scale,
A.isnullable as F_isNullAble
FROM Syscolumns as A
JOIN Systypes as T
ON (A.xType = T.xUserType AND A.Id = Object_id('sysobjects') )
LEFT JOIN ( SysIndexes as I
JOIN Syscolumns as A1
ON ( I.id = A1.id and A1.id = object_id('sysobjects') and (I.status & 0x800) = 0x800 AND A1.colid <= I.keycnt) )
ON ( A.id = I.id AND A.name = index_col('sysobjects', I.indid, A1.colid) )
LEFT JOIN SysComments as M
ON ( M.id = A.cdefault and ObjectProperty(A.cdefault, 'IsConstraint') = 1 )
ORDER BY A.Colid ASC
æå–æ•°æ®åº“内所有表的嗌Dµè¯¦¾l†è¯´æ˜Žçš„SQLè¯å¥
SELECT
(case when a.colorder=1 then d.name else '' end) N'表å',
a.colorder N'å—段åºå·',
a.name N'å—段å?,
(case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '�else ''
end) N'æ ‡è¯†',
(case when (SELECT count(*)
FROM sysobjects
WHERE (name in
(SELECT name
FROM sysindexes
WHERE (id = a.id) AND (indid in
(SELECT indid
FROM sysindexkeys
WHERE (id = a.id) AND (colid in
(SELECT colid
FROM syscolumns
WHERE (id = a.id) AND (name = a.name))))))) AND
(xtype = 'PK'))>0 then '� else '' end) N'主键',
b.name N'¾cÕdž‹',
a.length N'å 用å—节æ•?,
COLUMNPROPERTY(a.id,a.name,'PRECISION') as N'长度',
isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as N'ž®æ•°ä½æ•°',
(case when a.isnullable=1 then 'âˆ?else '' end) N'å…许½I?,
isnull(e.text,'') N'默认�,
isnull(g.[value],'') AS N'å—段说明'
FROM syscolumns a
left join systypes b
on a.xtype=b.xusertype
inner join sysobjects d
on a.id=d.id and d.xtype='U' and d.name<>'dtproperties'
left join syscomments e
on a.cdefault=e.id
left join sysproperties g
on a.id=g.id AND a.colid = g.smallid
order by object_name(a.id),a.colorder
快速获å–表test的记录æ€ÀL•°[对大定w‡è¡¨éžå¸¸æœ‰æ•ˆ]
快速获å–表test的记录æ€ÀL•°:
select rows from sysindexes where id = object_id('test') and indid in (0,1)
update 2 set KHXH=(ID+1)\2 2行递增¾~–å·
update [23] set id1 = 'No.'+right('00000000'+id,6) where id not like 'No%' //递增
update [23] set id1= 'No.'+right('00000000'+replace(id1,'No.',''),6) //è¡¥ä½é€’增
delete from [1] where (id%2)=1
奇数
替æ¢è¡¨åå—段
update [1] set domurl = replace(domurl,'Upload/Imgswf/','Upload/Photo/') where domurl like '%Upload/Imgswf/%'
截ä½
SELECT LEFT(表å, 5)
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æ€Èš„æ¥è®²åQŒæœ‰¾l验的è€æ‰‹ä»¬ç”¨ Web 站点æ¥è·Ÿítªè¡Œä¸šçš„走势。书¾cã€æ–‡ç« 和论文有助于跟上潮‹¹ï¼Œä½†å®ƒä»¬æ€ÖM½“上更适åˆäºŽåŸº¼‹€å¦ä¹ 。æžå¯Œåˆ›é€ 性的书ç±å¶å°”会撼动一两个基础性的东西。这æ ïLš„书也在本列表之列ã€?br />
需è¦æ出的一点è¦å‘Šæ˜¯åQŒä¸“注于 Java è¯è¨€çš„书¾cå’Œ Web 站点数é‡å·¨å¤§ã€‚您钟爱的未必在˜q™ä†¾åˆ—表里。那òq¶ä¸æ„味ç€å®ƒä»¬ä¸å¥½ã€‚它们åªæ˜¯ä¸åœ¨è¿™ä»½åˆ—表里而已。å¯èƒ½æ˜¯å› äؓ我还ä¸çŸ¥é“它们。也å¯èƒ½æ˜¯å› 为我ä¸è®¤ä¸ºå®ƒä»¬èƒ½å¤Ÿç®—得上是é‡è¦èµ„æºã€‚ä¸åŒ…å«ä¸€äº›å‚考资料是一个评判问题，但如果丘q™æ ·çš„è¯åQŒæ‚¨ä¹Ÿè®¸ž®Þp¦èŠ±å‡ ž®æ—¶æ¥æ‹–动滚动æ¡åQŒè¿˜è¦èŠ±ä¸Šæˆåƒä¸Šä¸‡ç¾Žå…ƒæ¥ä¹îC¹¦ã€‚如果您作äؓ一个专业的 Java ½E‹åºå‘˜ï¼Œæœ‰ä¸€äº›å¸¸ç”¨çš„优秀å‚考资料，一定è¦è®©æˆ‘知铘q™äº›èµ„料。这份列表一直都在更æ–îC¸åQŒæ‚¨æ出的那些也许就会被收录˜q›åŽ»ã€?br />
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Thinking in Java (Bruce Eckel)
Thinking in Java, 3rd edition åQˆBruce Eckel; Prentice Hall PTRåQ?002 òqß_¼‰
Java ¾~–程æ€æƒ³åQšç¬¬3ç‰?åQˆé™ˆæ˜Šé¹ ½{‰è¯‘; 机械工业出版½C¾ï¼Œ2005 òqß_¼‰
Eckel 的书对于å¦ä¹ 如何åœ?Java è¯è¨€çŽ¯å¢ƒä¸ä‹É用好é¢å‘对象技术æžå…¶å®žç”¨ã€‚书ä¸å¤§é‡çš„代ç æ ·ä¾‹è§£é‡Šäº†ä»–æ‰€ä»‹ç»çš„概å¿üc€‚æ–‡å—出自一个åƈä¸è®¤ä¸?Java 技术æ€ÀL˜¯æ£ç¡®½{”案的ähåQŒæ‰€ä»¥ç›¸å½“地实用。Eckel å…ähœ‰å¤šç§è¯è¨€çš„大é‡ç»éªŒï¼Œ˜q˜æœ‰ç”¨é¢å‘对象方å¼è¿›è¡Œæ€è€ƒçš„扎实技能。本书将˜q™äº›æŠ€èƒ½æ”¾åˆ°å®žç”¨çš„ Java è¯è¨€çŽ¯å¢ƒä¸ã€‚ä»–˜q˜åœ¨å†™ä¸€æœ¬æ–°ä¹¦ï¼ŒåäØ“ Thinking in Enterprise Javaã€?br />
Effective Java (Joshua Bloch)
Effective Java: Programming Language Guide åQˆJoshua Bloch; Addison-WesleyåQ?001 òqß_¼‰
Effective Java ä¸æ–‡ç‰?åQˆæ½˜çˆ±æ°‘ è¯? 机械工业出版½C¾ï¼Œ2003 òqß_¼‰
本书是ç†è§£ä¼˜¿U€ Java ½E‹åºè®¾è®¡åŽŸåˆ™çš„最佳书¾c。大多数æ料从其他的 “å¦ä¹?Java â€?的书ä¸æ ¹æœ¬æ‰¾ä¸åˆ°ã€‚例如，Bloch 书ä¸å…³äºŽè¦†ç›– equals() ˜q™ä¸€ç« 是我读˜q‡çš„最好的å‚考资料之一。他也在书ä¸åŒ…括了很实用的å¾è®®ï¼šç”¨æŽ¥å£æ›¿ä»£æŠ½è±¡ç±»å’Œçµ‹zÖM‹É用异常。Bloch æ˜?Sun å…¬å¸ Java òq›_°åº“的架构师，所以他é€å½»åœîCº†è§£è¿™é—¨è¯a€ã€‚事实上åQŒä»–¾~–写了该è¯è¨€ä¸å¤§é‡æœ‰ç”¨çš„库。本书必读ï¼
The Java Programming Language (Ken Arnold, James Gosling, David Holmes)
The Java Programming Language åQˆKen ArnoldåQŒJames GoslingåQŒDavid Holmes; Addison-WesleyåQ?000 òqß_¼‰
Java ¾~–程è¯è¨€åQˆç¬¬ 3 版） åQˆè™žä¸‡è£ ½{‰è¯‘åQŒä¸å›½ç”µåŠ›å‡ºç‰ˆç¤¾åQ?003 òqß_¼‰
˜q™ä¹Ÿè®¸æ˜¯èƒ½å¼„到的最好的 Java 入门è¯È‰©ã€‚它òq¶ä¸æ˜¯ä¸€ä¸ªæ ‡å‡†è§„范，而是一本介¾læ¯é—¨è¯a€ç‰ÒŽ€§çš„å¯è¯»ä¹¦ç±ã€‚这本书在严谨性和教育性方é¢æƒè¡¡å¾—很好åQŒèƒ½å¤Ÿè®©æ‡‚ç¼–½E‹çš„äºø™¿…速被 Java è¯è¨€åQˆå’Œå…¶ä¸°å¯Œçš„¾cÕdº“åQ‰æ‰€å¸å¼•ã€?br />
Concurrent Programming in Java: Design Principles and Patterns (Doug Lea)
Concurrent Programming in Java: Design Principles and Patterns, 2nd edition åQˆDoug Lea; Addison-WesleyåQ?999 òqß_¼‰
Java òq¶å‘¾~–程—设计原则与模å¼åQˆç¬¬äºŒç‰ˆåQ?åQˆè™næ¶?½{‰è¯‘åQŒä¸å›½ç”µåŠ›å‡ºç‰ˆç¤¾åQ?004 òqß_¼‰
ä¸æ˜¯æ¯ä¸ªå¼€å‘äh员都需è¦å¦‚æ¤ç»†è‡´åœ°äº†è§£òq¶å‘性，也ä¸æ˜¯æ¯ä¸ªå·¥½E‹å¸ˆéƒ½èƒ½è¾‘Öˆ°æœ¬ä¹¦çš„水准，但å´æ²¡æœ‰æ¯”本书更好的关于òq¶å‘性编½E‹çš„概述了。如果您å¯ÒŽ¤æ„Ÿå…´‘£ï¼Œè¯·ä»Ž˜q™é‡Œå¼€å§‹ã€‚Lea æ˜?SUNY 的一å专业程åºå‘˜åQŒä»–çš„å’Œòq¶å‘性有关的作å“和想法都包å«åœ¨äº† JDK 5.0 规范åQˆå¼•è‡?JSR166åQ‰ä¸åQŒæ‰€ä»¥æ‚¨å¤§å¯æ”‘Ö¿ƒåQŒä»–所说的关于有效使用 Java è¯è¨€çš„å¾è®®æ˜¯å€¼å¾—一å¬çš„。他是一个很善于沟通的人ã€?br />
Expert One-On-One J2EE Design and Development (Rod Johnson)
Expert One-On-One J2EE Design and Development åQˆRod JohnsonåQ?br />WROX: J2EE 设计开å‘ç¼–½E‹æŒ‡å?åQˆé‹¹¯‚ 译，电å工业出版½C¾ï¼Œ2003 òqß_¼‰
对于刚接è§?J2EE çš„ähæ¥è¯´åQŒè¿™æ˜¯å”¯ä¸€çš„一本如实åæ˜ è¿™™åÒŽŠ€æœ¯çš„书。本书收录了多年的æˆåŠŸç»éªŒå’Œå¤ÞpÓ|¾l验åQŒä¸åŒäºŽå…¶ä»–许多作者，Johnson ä¹äºŽž®†å¤±è´¥çš„¾l验公诸于众。J2EE 常常都被˜q‡åº¦ä½¿ç”¨ã€‚Johnson 的书能帮您é¿å…这一ç‚V€?
Refactoring (Martin Fowler, Kent Beck, John Brant, William Opdyke, Don Roberts)
Refactoring: Improving the Design of Existing Code åQˆMartin FowleråQŒKent BeckåQŒJohn BrantåQŒWilliam OpdykeåQŒDon Roberts; Addison-WesleyåQ?999 òqß_¼‰
é‡æž„åQšæ”¹å–„既有代ç 的设计åQˆä¸æ–‡ç‰ˆåQ?åQˆä¾¯æ?½{‰è¯‘åQŒä¸å›½ç”µåŠ›å‡ºç‰ˆç¤¾ åQ?003 òqß_¼‰
Fowler å†™äº†å‡ æœ¬çŽ°å·²å‡ºç‰ˆçš„æœ€‹¹è¡Œçš„ç¼–½E‹ä¹¦åQŒåŒ…æ‹?Analysis Patterns。他的关于é‡æž?的书是这一主题的基本书¾c。é‡æž„代ç 是被程åºå‘˜å¿½ç•¥çš„设lƒï¼Œä½†å´æ˜¯ç¨‹åºå‘˜æœ€ç›´è§‚的想法。é‡æž„是在ä¸æ”¹å˜ä»£ç ¾l“果的å‰æ下改进现有代ç 的设计。这是ä¿æŒä»£ç æ•´‹z的最ä½Ïx–¹å¼ï¼Œç”¨è¿™¿U方法设计的代ç æ€ÀL˜¯å¾ˆå®¹æ˜“ä¿®æ”V€‚什么时候进行é‡æž„å‘¢åQŸå½“代ç “散å‘出味é“â€æ—¶ã€‚Fowler 的书里满æ˜?Java è¯è¨€ä»£ç 的例å。许å¤?Java è¯è¨€é›†æˆå¼€å‘环境（IDEåQ‰ï¼ˆåŒ…括äº?IBM çš?EclipseåQ‰éƒ½ž®?Fowler çš„é‡æž„包å«äº†˜q›åŽ»åQŒæ¯ä¸€ä¸ªéƒ½ä½¿ç”¨ä»–çš„é‡æž„å命å，所以熟悉如extract method ½{‰é‡æž„方法还是很值得的ã€?br />
Design Patterns (Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides)
Design Patterns: Elements of Reusable Object Oriented Software åQˆErich GammaåQŒRichard HelmåQŒRalph JohnsonåQŒJohn Vlissides; Addison-WesleyåQ?997 òqß_¼‰
设计模å¼åQšå¯å¤ç”¨é¢å‘对象软äšg的基¼‹€ åQˆæŽè‹±å†› ½{‰è¯‘åQŒæœºæ¢°å·¥ä¸šå‡ºç‰ˆç¤¾ åQ?005 òqß_¼‰
˜q™æ˜¯ä¸€æœ¬åœ¨ä¸“业½E‹åºå‘˜åœˆå里更äؓ有å的书åQŒåŸºäºŽä½œè€…å…±åŒçš„¾l°å·åQŒè¿™æœ¬ä¹¦è¢«è®¤ä¸ºæ˜¯ “四人帮åQˆGOFåQ‰ä¹‹ä¹¦â€ã€‚模å¼æ˜¯æ€è€ƒå’Œè§£å†³æ™®é€šç¼–½E‹é—®é¢˜æ—¶å¯ä»¥é‡ç”¨çš„æ–¹å¼ã€‚å¦ä¹ 模å¼æ˜¯ä¸€é—¨å¦¿U‘。ä‹É用好模å¼åQˆæˆ–知é“ä»€ä¹ˆæ—¶å€™ä¸ ä½¿ç”¨æ¨¡å¼åQ‰æ˜¯ä¸€™åÒŽŠ€èƒ½ã€‚忽略模å¼åˆ™æ˜¯é”™è¯¯çš„。书ä¸æ‰€æœ‰çš„例å都以 C++ 表示åQŒä½† Java è¯è¨€æ˜¯ä»Žé‚£é‡Œè¯žç”Ÿçš„，è®?Java è¯è¨€½E‹åºå‘˜ç”±æ¤è”¾pÕdˆ°å¦‚何åœ?Java è¯è¨€ä¸å®žçŽ°è¿™äº›æ¨¡å¼ç›¸å¯¹ç®€å•ä¸€äº›ã€‚熟悉模å¼åƈ了解如何使用好模å¼ä‹É¾~–ç¨‹æ›´åŠ ½Ž€å•ã€‚这使得和其他程åºå‘˜äº¤æµä¹Ÿæ›´½Ž€å•ï¼Œå› äؓ在针寚w€šç”¨é—®é¢˜çš„通用解决æ–ÒŽ¡ˆä¸ï¼Œæ¨¡å¼æ˜¯æ˜q°è§£å†Ïx–¹æ¡ˆä¸å½¼æ¤å作的大é‡ç›¸å…³ç¼–½E‹æ¦‚å¿ëŠš„å¿«æ·æ–¹å¼ã€‚一些更为通用的方å¼ï¼Œå¦‚工厂方æ³?则是普便å˜åœ¨çš„，甚至å˜åœ¨äº?Java è¯è¨€æœ¬èín。关于明æ™ÞZ‹É用模å¼çš„˜q™ä¸ªä¸»é¢˜åQŒä¹Ÿå¯ä»¥é˜…读 Joshua Kerievsky çš?Refactoring to PatternsåQŒè¯¥ä¹¦ç§°å¯ä»¥è®©ä»£ç æ¥å‘Šè¯‰æ‚¨ä½•æ—¶å®žçŽ°æ¨¡å¼ã€?br />
Patterns of Enterprise Application Architecture (Martin Fowler)
Patterns of Enterprise Application Architecture åQˆMartin Fowler; Addison-WesleyåQ?002 òqß_¼‰
ä¼ä¸šåº”ç”¨æž¶æž„æ¨¡å¼ åQˆçŽ‹æ€€æ°?½{‰è¯‘åQŒæœºæ¢°å·¥ä¸šå‡ºç‰ˆç¤¾ åQ?004 òqß_¼‰
比è“vž®åž‹ã€ä¸€‹Æ¡æ€§é¡¹ç›®æ¥è¯ß_¼Œä¼ä¸šå¼€å‘当然代表了更大的挑战。那òq¶ä¸æ„味ç€ä¼ä¸šå¼€å‘带æ¥çš„所有挑战都是新挑战。事实上有些时候，˜q™é¡¹å¼€å‘å·²¾l?是以å‰å®Œæˆè¿‡çš„了。Fowler åšäº†å¾ˆå¤šä¸ªè¿™æ ïLš„™å¹ç›®ã€‚他的书æ到了一些通用解决æ–ÒŽ¡ˆåQŒåƈæ供了关于ä‹É用ã€æŠ˜ä¸å’Œå¯é€‰æ–¹æ¡ˆçš„指导。Fowler 在书ä¸åŒ…å«äº†ä¸€äº›ç†Ÿæ‚‰çš„模å¼åQŒå¦‚模型视图控制器（MVCåQ‰ï¼Œä»–也æ供了一些您也许ä¸äº†è§£çš„模å¼åQŒå¦‚å¤„ç† Web 站点上特定页é¢è¯·æ±‚或行äØ“è¯äh±‚çš?Page Controller 模å¼ã€‚æ£å¦‚您对待大多数模å¼ä¸€æ øP¼Œä¸€æ—¦æ‚¨è¯»è¿‡è®¸å¤šæ¨¡å¼åQŒæ‚¨ž®×ƒ¼šè®¤äØ“ “我已ç»çŸ¥é“那个模å¼äº†â€?。也许是˜q™æ ·åQŒä½†æœ‰ä¸€ä¸ªç”¨æ¥å¼•ç”¨æ¨¡å¼çš„通用表达方弘q˜æ˜¯å¾ˆæœ‰å¸®åŠ©çš„。在有多个组ä»Óž¼ˆç”׃¸åŒähå¼€å‘）的大型项目ä¸åQŒè¯¥¾cÕd¼•ç”¨æ˜¯ä¸€™å¹å¾ˆå¥½çš„帮助ã€?br />
UML Distilled (Martin Fowler)
UML Distilled: A Brief Guide to the Standard Object Modeling Language åQˆMartin Fowler; Addison-Wesley 2003 òqß_¼‰
UML¾_„¡ÑaåQšæ ‡å‡†å¯¹è±¡è¯a€½Ž€æ˜ŽæŒ‡å—（½W?版） åQˆå¾å®¶ç¦ 译，清åŽå¤§å¦å‡ºç‰ˆ½C?åQ?005 òqß_¼‰
对于专业的程åºå‘˜æ¥è¯´åQŒUML 是一门很é‡è¦çš„通用å¯è§†åŒ–沟通è¯a€åQŒä½†æ˜¯å®ƒè¢«è¿‡åº¦ä‹É用和è‰çŽ‡åœ°æ»¥ç”¨äº†ã€‚æ‚¨æ— éœ€å¯¹ä‹Éç”?UML 沟通了解太多。Martin å¯?UML çš„æç‚égؓ您æä¾›äº†æœ€æ ¸å¿ƒçš„ä¸œè¥Ñ€‚事实上åQŒå‰åŽçš„ž®é¡µæ供了常规基¼‹€ä¸Šå¯èƒ½ä‹É用到的所有东è¥Ñ€‚è¯¥ä¹¦ä¸ UML 例å的代ç 都æ˜?Java 代ç ã€?br />
Test-Driven Development: By Example (Kent Beck)
Test-Driven Development: By Example åQˆKent Beck; Addison-Wesley 2002 òqß_¼‰
‹¹‹è¯•é©±åŠ¨å¼€å‘（ä¸æ–‡ç‰ˆï¼‰ åQˆå´”å‡?译，ä¸å›½ç”µåŠ›å‡ºç‰ˆ½C?åQ?004 òqß_¼‰
‹¹‹è¯•ä¼˜å…ˆ¾~–程ž®†ä‹É¾~–程å‘生é©å‘½æ€§å˜åŒ–，能助您æˆä¸ºæ›´å¥½çš„½E‹åºå‘˜ã€‚在写代ç 之å‰ç¼–写测试开始很难，但å´æ˜¯ä¸€™å¹å¨åŠ›å¼ºå¤§çš„技能。通过优先¾~–写‹¹‹è¯•åQŒå¯ä½¿ä»£ç æ›´åŠ ç®€å•ï¼Œòq¶ç¡®ä¿ä»Žä¸€å¼€å§‹å®ƒž®Þpƒ½å·¥ä½œåQˆBeck 实践ç€ä»–æ倡的‹¹‹è¯•ä¼˜å…ˆåQŒä¸Žäººåˆå†™äº† JUnitåQŒè¿™æ˜?Java è¯è¨€æœ€‹¹è¡Œçš„测试框æžÓž¼‰ã€‚Beck 的书是æƒå¨çš„å‚考资料，扩展了的 Money 例å也用 Java è¯è¨€å†™æˆã€‚Beck 详述了如何用‹¹‹è¯•ä¼˜å…ˆ˜q›è¡Œ æ€è€ƒï¼ˆ˜q™ä¹Ÿè®¸æ˜¯è®¸å¤š½E‹åºå‘˜é¦–å…ˆé‡åˆ°çš„éšœç¢åQ‰ã€?br />
The Pragmatic Programmer: From Journeyman to Master (Andy Hunt and Dave Thomas)
The Pragmatic Programmer: From Journeyman to Master åQˆAndrew Hunt å’?David Thomas; Addison-Wesley 1999 òqß_¼‰
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Bruce Eckel's MindView, Inc.
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ONJava.com
ONJava.com
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 10ã€åœ¨ä¸€ä¸ªJSP的请求处ç†ä¸å¦‚何åœæ¢JSP的执行Â?br /> 如下例：Â
 <%Â
 if (request.getParameter("wen") != null) {Â
 // do somethingÂ
 } else {Â
 return;Â
 }Â
 %>Â
 11ã€åœ¨JSPä¸å¦‚何定义方法Â?br />Â ä½ å¯ä»¥å®šä¹‰æ–¹æ³•ï¼Œä½†æ˜¯ä½ ä¸èƒ½ç›´æŽ¥è®¿é—®JSP的内¾|®å¯¹è±¡ï¼Œè€Œæ˜¯é€šè¿‡å‚æ•°çš„æ–¹æ³•ä¼ é€’ã€‚å¦‚ä¸‹ï¼šÂ
 <%!Â
 public String howBadFrom(HttpServletRequest req) {Â
 HttpSession ses = req.getSession();Â
 ...Â
 return req.getRemoteHost();Â
 }Â
 %>Â
 <%Â
 out.print("in general,lao lee is not baddie ");Â
 %>Â
 <%= howBadFrom(request) %>Â
 12ã€å¦‚æžœBROWSER已关é—了COOKIESåQŒåœ¨JSPä¸æˆ‘如何打开SESSIONæ¥è·ŸítªÂ?br /> 使用URLé‡å†™å›_¯åQŒå¦‚下：Â
 hello1.jspÂ
 <%@ page session="true" %>Â
 <%Â
 Integer num = new Integer(100);Â
 session.putValue("num",num);Â
 String url =response.encodeURL("hello2.jsp");Â
 %>Â
 <a href=<%=url%>>hello2.jsp</a>Â
 hello2.jspÂ
 <%@ page session="true" %>Â
 <%Â
 Integer i= (Integer )session.getValue("num");Â
 out.println("Num value in session is "+i.intValue());Â
 %>Â
 13ã€åœ¨JSPä¸èƒ½å‘é€EMAILå—Â?br /> å¯ä»¥ä½¿ç”¨SUN的专用包åQšsun.net.smtp包。如下脚本ä‹É用SmtpClient¾cÕd‘é€EMAIL。Â?br /> <%@ page import="sun.net.smtp.SmtpClient, java.io.*" %>Â
 <%Â
 String from="ybwen@sina.com";Â
 String to="hewenjun@yeah.net, lei@who.com.cn";Â
 try{Â
 SmtpClient client = new SmtpClient("mail.xxxxx.xxx");Â
 client.from(from);Â
 client.to(to);Â
 PrintStream message = client.startMessage();Â
 message.println("To: " + to);Â
 message.println("Subject: Sending email from JSP!");Â
 message.println("This was sent from a JSP page!");Â
 message.println();Â
 message.println("Cool! :-)");Â
 message.println();Â
 message.println("Good Boy");Â
 message.println("Im in genius.com");Â
 message.println();Â
 client.closeServer();Â
 }Â
 catch (IOException e){Â
 System.out.println("ERROR SENDING EMAIL:"+e);Â
 }Â
 %>Â
 14ã€åœ¨SERVLETä¸æˆ‘能调用一个JSP错误™åµå—Â
 当然没问题，如下展示了如何在一个SERVLET控制逻辑å•å…ƒå†…调用一个JSP错误™åµé¢ã€‚Â?br /> protected void sendErrorRedirect(HttpServletRequest request,Â
 HttpServletResponse response, String errorPageURL,Â
 Throwable e)Â
 throws ServletException, IOException {Â
 request.setAttribute ("javax.servlet.jsp.jspException", e);Â
 getServletConfig().getServletContext().Â
 getRequestDispatcher(errorPageURL).forward(request,Â
 response);Â
 }Â
 public void doPost(HttpServletRequest request,HttpServletResponse response) {Â
 try {Â
 // do somethingÂ
 } catch (Exception ex) {Â
 try {Â
 sendErrorRedirect(request,response,"/jsp/MyErrorPage.jsp",ex);Â
 } catch (Exception e) {Â
 e.printStackTrace();Â
 }Â
 }Â
 }Â
 15ã€JSPå’ŒAPPLET如何通讯Â
 JSP如何与EJB SessionBean通讯Â
 下é¢çš„代ç 段作了很好的示范Â?br /> <%@ page import="javax.naming.*, javax.rmi.PortableRemoteObject,Â
 foo.AccountHome, foo.Account" %>Â
 <%!Â
 //定义一个对SessionBeanHome接å£å®žä¾‹çš„全局引用Â
 AccountHome accHome=null;Â
 public void jspInit() {Â
 //获得Home接å£å®žä¾‹Â
 InitialContext cntxt = new InitialContext( );Â
 Object ref= cntxt.lookup("java:comp/env/ejb/AccountEJB");Â
 accHome = (AccountHome)PortableRemoteObject.narrow(ref,AccountHome.class);Â
 }Â
 %>Â
 <%Â
 //实例化SessionBeanÂ
 Account acct = accHome.create();Â
 //调用˜qœç¨‹æ–ÒŽ³•Â
 acct.doWhatever(...);Â
 // 如椽{‰ç‰Â
 %>Â
 16ã€å½“我ä‹É用一个结果集æ—Óž¼Œå¦‚何防æ¢å—段ä¸?null"çš„å—域显½Cºåœ¨æˆ‘çš„HTML输入文本域ä¸?Â
 å¯ä»¥å®šä¹‰ä¸€ä¸ªç®€å•çš„函数æ¥è¾¾åˆ°ç›®çš„，如下åQšÂ?br /> <%!Â
 String blanknull(String s) {Â
 return (s == null) ? "" : s;Â
 }Â
 %>Â
 然åŽåœ¨JSPçš„FORMä¸ï¼Œå¯ä»¥˜q™æ ·ä½¿ç”¨Â
 <input type="text" name="shoesize" value="<%=blanknull(shoesize)%>">Â
 17ã€å¦‚何ä¸SERVLET或JSP下è²ä¸€ä¸ªæ–‡ä»Óž¼ˆå¦‚：binary,text,executable)åQŸÂ?br /> 现æ供两个解å†Ïx–¹æ¡ˆï¼šÂ
 AåQšä‹É用HTTPåQŒÂ?br /> BåQšåœ¨Servletä¸ï¼Œé€šè¿‡è®„¡½®ContentTypeå’Œä‹É用java.io包的Stream½{‰ç±»å¯ä½œåˆ?例如åQšÂ?br /> response.setContentType("application/x-msword");Â
 然åŽæƒŒ™¾“出缓冲ä¸å†™ä¸€äº›ä¸œä¸œå³å¯ã€‚Â?/p>
 18ã€ä‹É用useBeanæ ‡å¿—åˆå§‹åŒ–BEAN时如何接å—åˆå§‹åŒ–å‚æ•°Â
Â ä½¿ç”¨å¦‚ä¸‹ä¸¤æ ‡½{‘Ö³å¯ï¼šÂ
 <jsp:getProperty name="wenBean" property="someProperty"/>Â
 <jsp:setProperty name="wenBean" property="someProperty" value="someValue"/>Â
 19ã€ä‹É用JSP如何获得客户‹¹è§ˆå™¨çš„ä¿¡æ¯åQŸÂ?br /> 使用request.getHeader(String)å›_¯Â
 20ã€èƒ½è±¡è°ƒç”¨å½E‹åºä¸€æ ¯‚°ƒç”¨JSPå—？Â
 当然å¯ä»¥åQŒç”¨<jsp:include page="relativeURL" flush="true"/>Â
 21ã€å½“我釾~–译我的JSP使用的一个类åŽï¼Œä¸ÞZ»€ä¹ˆJVM¾l§ç®‹ä½¿ç”¨æˆ‘çš„è€CLASSåQŸÂ?/p>
 <%@include file="abc.jsp"%>ä¸?lt;jsp:include page="abc.jsp"/>之间的差别？Â
 å‰ä¸€ä¸ªäØ“é™æ€åŒ…å«ï¼Œè€ŒåŽä¸€ä¸ªäؓ动æ€åŒ…å«Â?/p>
 22ã€JSP的缺点？Â
 1。对JAVA½E‹åº˜q›è¡Œè°ƒè¯•æ²¡æœ‰å¥½ä¸œä¸œÂ?br /> 2ã€‚å› å¤§å¤šæ•°çš„servlet引擎ä¸æ”¯æŒconnection poolingÂ
 3。Servletå¼•æ“Žæ²¡æœ‰æ ‡å‡†Â
 4。JSP与其它脚本è¯a€çš„交互Â?/p>
 23ã€JSP能进行递归调用å—？Â
 当然å¯ä»¥,如对formçš„æ交给本页Â
 34ã€å¦‚何实现JSP的国际化åQŸÂ?br /> 为儿U版本æä¾›resource bundles属性文件å³å¯Â?/p>
 25ã€åœ¨JSPä¸å¦‚何写文本文äšgåQŸÂ?br /> 使用PrintWriter对象åQŒå¦‚åQšÂ?br /> <%@ page import="java.io.*" %>Â
 <%Â
 String str = "print me";Â
 String nameOfTextFile = "/usr/anil/imp.txt";Â
 try {Â
 PrintWriter pw = new PrintWriter(new FileOutputStream(nameOfTextFile));Â
 pw.println(str);Â
 pw.close();Â
 } catch(IOException e) {Â
 out.println(e.getMessage());Â
 }Â
 %>Â
 26ã€å¦‚何在JSPä¸åŒ…括ç»å¯¹èµ\径文ä»Óž¼ŸÂ
 使用URLConnectionå›_¯ã€‚Â?/p>
 27ã€åœ¨servletså’ŒJSP之间能共享session对象å—？Â
 当然å¯ä»¥åQŒÂ?br /> HttpSession session = request.getSession(true);Â
 session.putValue("variable","value");Â
 28ã€JavaScriptçš„å˜é‡èƒ½å¤åˆ¶åˆ°JSPçš„SESSIONä¸å—åQŸÂ?/p>
 29ã€å¦‚何设¾|®cookie在æŸä¸€æ—‰™—´åŽè¿‡æœŸï¼ŸÂ
 用Cookie.setMaxAge(int)Â
 30ã€å¦‚何获得当å‰çš„sessions敎ͼŸÂ
 å¯ä»¥ä½¿ç”¨HttpSessionBindingListenersæ¥è·ŸítªÂ?/p>
 31ã€èƒ½è®„¡½®ä¸€äº›ä»£ç 在我所有的JSPæ–‡äšg之上˜qè¡ŒåQŸå¦‚æžœå¯ä»¥ï¼Œèƒ½å…±äº«å—åQŸÂ?br /> 当然å¯ä»¥,å¯ä»¥ä¸ÞZ½ çš„JSPæ–‡äšg定义一个别å?/jsp/=ybwen.genius.myPreprocessingServlet,而以/jsp/为剾~€çš„文件å¯ä»¥ä‹É用Â?/p>
 32ã€å¯¹ä¸€ä¸ªJSP™åµï¼Œå¦‚果多个客户端åŒæ—¶è¯·æ±‚它åQŒåŒæ¥å¯èƒ½å—åQŸÂ?br /> 在jsp:useBeanè¯æ³•ä¸ä‹É用beanName有何好处åQŸÂ?br /> beanName使用Beans.instantiate()åˆå§‹åŒ–BeanÂ
 33ã€å½“我ä‹Éç”?lt;jsp:forward>æ—Óž¼Œåœ¨æµè§ˆå™¨çš„地å€æ 没有改å˜ï¼ŸÂ
 使用response.sendRedirect("newURL")Â
 34ã€å¦‚何è{æ¢JSP 0.9版本的文件到JSP1.1?Â
 å¯ä‹É用sed/awkå›_¯Â
 35ã€ä‹É用JSP能设¾|®HTML FORMä¸è¾“入域的焦点，ä¸ç”¨JavaScript?Â
 没办法�/p>
 36ã€ä‹É用JSP˜qžæŽ¥åˆ°æ•°æ®åº“˜qžæŽ¥¾~“å†²æ± çš„æœ€å¥½æ–¹æ³•æ˜¯ä»€ä¹ˆï¼ŸÂ
 1.使用JDBC2ã€?ä¸å¸¦æœ‰æ¤æœåŠ¡çš„DriverÂ
 2.使用æ供有æ¤æœåŠ¡çš„Application serverÂ
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1ã€å°†eclipse安装路径下的configurationç›®å½•åˆ é™¤åQŒå†é‡å¯eclipseã€?
2ã€å³å‡»eclipseå¿«æ·æ–¹å¼åQŒåœ¨ç›®æ ‡æ 的最åŽåŠ å…¥eclipseçš„å¯åŠ¨å‚æ•?clean。或者在DOS下用“eclipse-cleanâ€æ¥å¯åŠ¨ã€?/span>
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1.安装JDK
下è²åœ°å€:http://Java.sun.com/j2se/
注æ„:在WIN XP下安装ECLIPSEä¸éœ€è¦è®¾¾|®JDK环境å˜é‡ã€‚（实践¾l验åQ?
2.安装ECLIPSE
下è²åœ°å€:http://download.eclipse.org/downloads/ã€?
åQ?åQ‰eclipse的安装éžå¸¸ç®€å•ï¼Œå®ƒå±žäºŽç»¿è‰²èÊY件的安装æ–ÒŽ³•åQšä¸éœ€è¦è¿è¡Œå®‰è£…程åºï¼Œåªéœ€è¦å°†ä¸‹è²çš„eclipse压羃包解压就å¯ä»¥˜qè¡Œeclipse了（路径自己喜欢åQ‰ã€?
åQ?åQ‰æ£€æŸ¥eclipse是å¦å®‰è£…æˆåŠŸã€‚åŒå‡È›®å½•ä¸‹åQšeclipse.exeæ–‡äšgæ¥å¯åŠ¨eclipse。第一‹Æ¡å¯åŠ¨ä¼šå¼¹å‡ºå¯¹è¯æ¡†ï¼ˆç”¨æ¥è®„¡½®å·¥ä½œ½Iºé—´åQŒä½¾|®è‡ªå·±å–œ‹Æ¢ï¼‰åQŒå•å‡»OK按钮åQŒå¼€å§‹è¿è¡Œeclipse½E‹åºã€‚è¿è¡Œå®Œæ¯•åŽåQŒå‡ºçŽîC¸€ä¸ªWelcome to Eclipse 3.0 的欢˜qŽç•Œé¢ï¼Œè¡¨ç¤ºå·²ç»å®‰è£…æˆåŠŸäº†ã€?
3.安装多国è¯è¨€åŒ?
下è²åœ°å€åQ?a target="_new" rel="nofollow">http://download.eclipse.org/downloads/ã€?
注æ„åQšè¦ä¸Žeclipse 3.0.1版本相对应（¾|‘ååQšLanguage PackåQ‰ã€?
åQ?åQ‰å…ˆå…ÏxŽ‰Eclipseã€?
åQ?åQ‰å°†ä¸‹è²çš„è¯a€åŒ…解压羃åQŒåƈ¾l™è¿™ä¸ªç›®å½•å–个ååQˆæœ¬ä¾‹ï¼šlanguageåQ‰ã€?
(3) ž®†æ¤ç›®å½•å¤åˆ¶åˆ°eclipse安装目录下（最åŽèµ\径äØ“åQšeclipse安装目录/language/eclipse/..åQ‰ã€?
åQ?åQ‰å¾ç«‹è¯a€åŒ…çš„linkæ–‡äšg。在eclipse安装目录下å¾ä¸€ä¸ªç›®å½•åƈå–å为linksåQŒåœ¨è¯¥ç›®å½•ä¸æ–°å¾ä¸€ä¸ªæ–‡æœ¬åƈå–å为language.linkåQˆå¯ä»ÀL„å–ååQ‰ï¼Œç„¶åŽåœ¨language.linkæ–‡äšgä¸åŠ 入一行文å—：path=language(用相对èµ\å¾?ã€?
¾l过四æ¥åŽï¼ŒçŽ°åœ¨ž®±å¯ä»¥é‡å¯eclipse了。看看ï¼æ˜¯ä¸æ˜¯eclipseç•Œé¢éƒ½æ±‰åŒ–æˆä¸æ–‡äº†å‘¢åQ未æˆåŠŸå®‰è£…的朋å‹ï¼Œå¿«ç‚¹è¯•ä¸‹å•¦ï¼
以上为本äºø™¿‘期的å¦ä¹ æˆæžœåQŒè°}ä¾›å„ä½æœ‹å‹å‚考ï¼è‹¥æœ‰ä¸å¯¹çš„地方请è§è°…åQ?/span>
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