当需要在数据库中开发输出HTML报表的时候, 我们可以在过程中直接使用htp包来实现html代码和对数据处理后的输出. 并输出为需要的格式(HTML标记语言来控制) . 以下提供一个直接从数据库生成HTML报表的测试例子, 需要根据自己的需要来进行修改或增加.
在使用前需要配置apache的连接, 这样在调用过程的时候, 系统直接将生成的html输出到WEB;
--配置apache连接:
如安装在D:\system\https下,D:\system\https\Apache\modplsql\conf\dads.conf文件. 设置为:
<Location /ss>
SetHandler pls_handler
Order deny,allow
Allow from all
AllowOverride None
PlsqlDatabaseUsername dinya
PlsqlDatabasePassword dinya
PlsqlDatabaseConnectString dinya:1521:ora10g
PlsqlAuthenticationMode Basic
</Location>
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当然对数据库的连接必须有效, 具体请见相关的设置文档. 重起Apache服务.
--创建测试包:
create or replace package cux_html_report as
function t(p_size in number, p_content in varchar2) return varchar2 ;
type c_sql is ref cursor;
procedure main;
procedure html_header(p_title in varchar2);
procedure html_body(p_sql in varchar2,p_column_count in number,p_subtitle
in varchar2,p_align in varchar2,p_black in varchar2);
procedure html_tail;
procedure table_h(p_width in number,p_border in number,p_align in varchar2);
procedure table_t;
procedure tr_(p_col_count in number,p_column in varchar2,p_align in varchar2,
p_black in varchar2);
procedure tr_h;
procedure tr_t;
procedure td_(p_col_count in number,p_content in varchar2,p_align in varchar2,
p_black in varchar2);
procedure report_header(p_title in varchar2);
procedure report_subtitle(p_col_count in number,p_content in varchar2,p_align
in varchar2,p_black in varchar2);
procedure report_tail(p_content in varchar2);
end ;
/
create or replace package body cux_html_report as
function t(p_size in number, p_content in varchar2) return varchar2 as
i number:=0;
v_out varchar2(300):='';
p_cont varchar2(1000):=p_content;
begin
for ii in 1..p_size loop
select substr(p_cont,0,decode(instr(p_cont,';'),0,length(p_cont),instr(p_cont,';')-1))
into v_out from dual ;
p_cont:=substr(p_cont,instr(p_cont,';')+1);
i:=i+1;
if i=p_size then
return v_out;
end if;
end loop;
end ;
/*******************************************************************************
主程序
需要处理分页的问题
********************************************************************************/
procedure main as
begin
html_header('我的测试报表');
report_header('我的标题');
html_body('select t.owner||'';''||t.object_name||'';''||t.object_id||'';''|
|t.object_type||'';''||t.owner
from all_objects t
where t.owner=''DINYA''
and rownum<=100',5,'序号;对象名称;ID;类型','center','<b></b>');
report_tail('这里是报表尾');
html_tail;
end;
--页头,固定格式
procedure html_header(p_title in varchar2) as
begin
htp.p('
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>'||nvl(trim(p_title),'无标题文档')||'</title>
</head>
<body>');
end ;
--页体, 根据SQL程序和字段数,展示数据
procedure html_body(p_sql in varchar2,p_column_count in number,p_subtitle
in varchar2,p_align in varchar2,p_black in varchar2) as
i number:=0;
c c_sql;
v_column varchar2(4000);
begin
table_h(90,1,'center');
report_subtitle(p_column_count,p_subtitle,p_align,p_black);
open c for p_sql;
loop
fetch c into v_column;
exit when c%notfound;
i:=i+1;
tr_(p_column_count,v_column,'left','');
end loop;
table_t;
end ;
--页尾, 固定内容
procedure html_tail as
begin
htp.p('</body> </html>');
end ;
--------------------------------------------------------------------------------
--表头, 表的属性
procedure table_h(p_width in number,p_border in number,p_align in varchar2) as
begin
htp.p('<table width="'||p_width||'%" border="'||p_border||'
" align="'||p_align||'">');
end ;
--表尾
procedure table_t as
begin
htp.p('</table>');
end ;
--------------------------------------------------------------------------------
--表格行
--------------------------------------------------------------------------------
procedure tr_(p_col_count in number,p_column in varchar2,p_align in varchar2,
p_black in varchar2) as
begin
htp.p('<tr>');
td_(p_col_count,p_column,p_align,p_black);
htp.p('</tr>');
end;
procedure tr_h as
begin
htp.p('<tr>');
end ;
procedure tr_t as
begin
htp.p('</tr>');
end ;
-------------------------------------------------------------------------------
--表单元格
-------------------------------------------------------------------------------
procedure td_(p_col_count in number,p_content in varchar2,p_align in varchar2,
p_black in varchar2) as
v_cont varchar2(300):=p_content;
v_out varchar2(300):='';
begin
for i in 1..p_col_count loop
select substr(v_cont,0,decode(instr(v_cont,';'),0,length(v_cont),
instr(v_cont,';')-1))
into v_out from dual ;
htp.p('<td align="'||p_align||'">'||substr(p_black,1,3)||v_out|
|substr(p_black,4)||'</td>');
v_cont:=substr(v_cont,instr(v_cont,';')+1);
end loop;
end ;
------------------------------------------------------------------------------
--报表内容部分
-----------------------------------------------------------------------------
procedure report_header(p_title in varchar2) as
begin
table_h(90,0,'center');
tr_(1,p_title,'center','<b></b>');
table_t;
end ;
procedure report_subtitle(p_col_count in number,p_content in varchar2,
p_align in varchar2,p_black in varchar2) as
begin
tr_h;
td_(p_col_count,p_content,p_align,p_black);
tr_t;
end ;
procedure report_tail(p_content in varchar2) as
begin
table_h(90,0,'center');
tr_(1,p_content,'left','');
table_t;
end;
----------------------------------------------------------------------------------
end ;
/
SQL> @d:\cux_html_report.pck
Package created.
Package body created.
SQL>
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编译没有错误后, 使用http://dinya:7777/ss/cux_html_report.main 即可查看报表.
如果在main过程中使用owa_util.mime_header(ccontent_type => 'application/vnd.ms-excel'); 可以直接将数据生成到Excel中.
如:
procedure main as
begin
owa_util.mime_header(ccontent_type => 'application/vnd.ms-excel');
html_header('我的测试报表');
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需要使用的话, 可以根据需要修改上面的程序.
（T114）
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