两个实例介绍: OXuSL~
page.rar --servlet+bean+jsp; iWd}6Mw
page2.rar --servlet+bean+jsp+structs+dao类; e'vs:$@Ip9
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封装类的代码: !m$ ]$]I
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/** ~QT0PE<$4?
* ni+ 7o^
* 实现分页功能的Bean :H+ghgh
* O&?-=8pL
* @author ThinkBank +eHA1w~~
* @version 1.0 .;/> )K[
* $wJc;2g:_
*/ a+ k-0^T
public class PageBean { tzp^[t~
/** Nc*Xnq 8z
* 每页显示的记录数 >Ff-VatLR
*/ |t6rH=
private int pageSize; GCJ; MuJ
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/** Z+.*^|C"
* 总记录数 ~0CNc'TRb
*/ dvF]o
private int totalResults; NPzb=,>
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/** xD/ W7P
* 当前页号 sCu3]
*/ i['@?5N
private int currentPage = 1; |2c3 tCt
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/** QHV$^>+k
* 总页数 c50r/t3P
*/ r_c }DV
private int totalPages; RkibQQd5/
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/** #Igi>t
* q*-+ AYR
* @param totalResults fGwxfh@
* 总记录数 @\ T9)
* @param pageSize QW PH!B]B
* 每页显示记录数 T6CgQY|:-_
*/ 2 H8
public PageBean(int totalResults, int pageSize) { ,*Pp"k*p
this.totalResults = totalResults; 5ONgU":e
this.pageSize = pageSize; r)|H5xc
this.totalPages = (int) Math.ceil(totalResults / (double) pageSize); 0OZv4uw
} R4DB5B
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/** 7hg2!$y.+}
* 是否存在下一页 Ce?udUUJ
* 1%LG[vD
* @return N]mC.
*/ X+v7.| &
public boolean hasNextPage() { }-D G"9
if (this.currentPage >= this.totalPages) ii7}NW
return false; $fr4L
else y9-F{~%@r
return true; _lc0EazU
} I-'Gp)j?
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/** l>jY-qhc
* 是否存在上一页 F?)%RK
* \.xP({
* @return $wo4,1
*/ Gyn(|SH5
public boolean hasPreviousPage() { \0| [
if (this.currentPage <= 1) w|#rXl9vz
return false; J1$*4bW
else <S/f>n;
return true; XYK #TC:
} :0eQv+M
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/** hWjA(HN
* 取得当前页号 WYBn +:pNM
* ZOBvGEo
* @return BtDJ=vfA
*/ SM`#lpGD
public int getCurrentPage() { H!xL$J\F
return currentPage; ?L6l&*P
} o'H!/CaK
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/** nv6-}+X
* 设置当前页号 p,7@NSDC&
* *jpW;<R2@
* @param currentPage M kA^|
*/ J ) UB,:
public void setCurrentPage(int currentPage) { NxO\DI*
this.currentPage = currentPage; $&K&b,
} 0K^&)&W1 7
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/** ZvC>d"to"
* 总页数 >!=3 WiDm
* XJK3"Jk$
* @return r7"/, C=
*/ BND GK)8u
public int getTotalPages() { zn|lihR
return totalPages; $`9H$*
} yr=o O' o
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/** BA[|M
* 开始的记录号 +o ]j|`vS)
* HB W1N><
* @return @rlvp5 rr
*/ + _ ~_)F
public int getStartResult() { q 5:OZp
return this.pageSize * (this.currentPage - 1); Q"o,n!<
} AG 7v[X(
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/** 6RyeEbL
* 获取每页显示记录数 QN4^HT;
* @return ,d8#R/
*/ ?f@Q9{5tb
public int getPageSize() { >FdkK
return pageSize; 4bB~r2J-
} `z0(
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/** |n)<_6I
* 设置每页显示记录数 -\4V[(: +
* @param pageSize ?X0r>H&e
*/ }ISQZ%_1d
public void setPageSize(int pageSize) { ]BMfXcJPG
this.pageSize = pageSize; Wu/ I V8'O
} %/EU_GcW1
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/** _E2_.Ke2nn
* J`h v4r<
* @return 总记录数 *p;{!AE
*/ u ^~zX=
public int getTotalResults() { t~<&x X-!
return totalResults; t`b q4]
} 4fWJG
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public static void main(String[] args) SRw{2R;]/
{ r Q<y[K}h
PageBean pageBean=new PageBean(105,10); $jHdT
pageBean.setCurrentPage(11); &;Nwmwf
System.out.println(pageBean.getTotalPages()); CJ-vb.`dk&
System.out.println(pageBean.getStartResult()); vHv$z6f{O
System.out.println(pageBean.hasNextPage()); jxLfx^G%
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} =dU9rz
}