一.设计初衷

1.EBS请求输出excel文件常用的有3种模式:

1.1.RTF模板+XML数据源
1.2 package输出html格式
1.3 package输出excel对应的xml文本

2.上面三种模式开发起来都比较麻烦，而且输出的是xls的文件，如果导出的数据很多，文件特别大。

3.所以想法是请求根据一段sql，动态解析出字段名称，作为excel的标题，然后数据库拼接xml文本，转成blob对象，存储到fnd_lobs表。这样通过ebs标准api就能在请求里面下载blob对应的excel文件。

二．设计思路

参考网上的程序包CUX_XLSX_MAKER_PKG,传入一段SQL后，产生一个EXCEL文件，转成blob对象后，存储到数据库服务器指定目录。由于请求输出访问的应用服务器，没法直接读取数据库服务器的文件。所以考虑直接把转成的blob对象存储到FND_LOBS表，然后通过标准API（fnd_gfm.construct_download_URL）得到文件下载url，然后在form查看数据时通过 fnd_utilities.open_url下载excel文件。

三．部署步骤

1.执行下面的SQL创建请求和文件对应关系表

-- Create table
create table CUX.CUX_REQUEST_FILE_MAPPING
(id               NUMBER,request_id       NUMBER,file_id          NUMBER,creation_date    DATE,created_by       NUMBER,last_update_date DATE,last_updated_by  NUMBER
);
-- Add comments to the table 
comment on table CUX.CUX_REQUEST_FILE_MAPPINGis '请求和文件对应关系表';
-- Add comments to the columns 
comment on column CUX.CUX_REQUEST_FILE_MAPPING.idis '主键ID';
comment on column CUX.CUX_REQUEST_FILE_MAPPING.request_idis '请求ID';
comment on column CUX.CUX_REQUEST_FILE_MAPPING.file_idis '文件ID';
-- Create/Recreate indexes 
create index CUX.CUX_REQUEST_FILE_MAPPING_N1 on CUX.CUX_REQUEST_FILE_MAPPING (REQUEST_ID);
create index CUX.CUX_REQUEST_FILE_MAPPING_N2 on CUX.CUX_REQUEST_FILE_MAPPING (FILE_ID);
create unique index CUX.CUX_REQUEST_FILE_MAPPING_U1 on CUX.CUX_REQUEST_FILE_MAPPING (ID);
CREATE OR REPLACE SYNONYM CUX_REQUEST_FILE_MAPPING FOR CUX.CUX_REQUEST_FILE_MAPPING;-- Create sequence 
create sequence CUX.CUX_REQUEST_FILE_MAPPING_S
minvalue 1
start with 1
increment by 1;CREATE OR REPLACE SYNONYM CUX_REQUEST_FILE_MAPPING_S FOR CUX.CUX_REQUEST_FILE_MAPPING_S;

2.创建CUX_XLSX_MAKER_PKG包

create or replace package CUX_XLSX_MAKER_PKG is/******************************************************************************NAME:       CUX_XLSX_MAKER_PKGPURPOSE:    XLSX 生成 Pkg，主要是从Oracle数据库端生成Xlsx二进制的文件。REVISIONS:Ver        Date        Author           Description---------  ----------  ---------------  ------------------------------------1.0        2011/2/19   Anton Scheffer   1,New Create the pkg1.1        2015/6/10     Sam.T          1.优化核心处理生成xlsx的代码，使得生成文档的执行效率大大提高！1.1        2015/6/10     Sam.T          1.query2sheet增加绑定变量的可选输入参数。1.2        2015/6/15     Sam.T          1.代码增加调试模式。直接设置G_DEBUG_MODE变量即可。1.2        2015/6/20     Sam.T          1.为方便使用，再次封装一些简单易用的过程，生成xlsx文档1.2        2015/7/5     Sam.T          1.单条SQL生成xlsx文档的内容，增加是否显示foot，以及显示的行数。******************************************************************************/---------/****************************************************************************************************************************Copyright (C) 2011, 2012 by Anton SchefferPermission is hereby granted, free of charge, to any person obtaining a copyof this software and associated documentation files (the "Software"), to dealin the Software without restriction, including without limitation the rightsto use, copy, modify, merge, publish, distribute, sublicense, and/or sellcopies of the Software, and to permit persons to whom the Software isfurnished to do so, subject to the following conditions:The above copyright notice and this permission notice shall be included inall copies or substantial portions of the Software.THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS ORIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THEAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHERLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS INTHE SOFTWARE.************************************************************************************************************************** */G_DEBUG_MODE boolean := FALSE;---DBMS_OUTPUT直接输出/FILE_OUTPUT文档输出/REQUEST_OUTPUT请求日志输出/CONTEXT_OUTPUT 将日志改为上下文输出G_DEBUG_TYPE VARCHAR2(240) := 'DBMS_OUTPUT';---绑定变量用的临时表变量TYPE REC_COL_VALUE IS RECORD(COL_ID    NUMBER(3),COL_VALUE VARCHAR2(2400));TYPE TAB_COL_VALUE IS table of REC_COL_VALUE index by binary_integer;TYPE TAB_COL_WIDTHS IS table of NUMBER index by binary_integer;--type tp_alignment is record(vertical   varchar2(11),horizontal varchar2(16),wrapText   boolean);--procedure clear_workbook;--procedure new_sheet(p_sheetname varchar2 := null);--function OraFmt2Excel(p_format varchar2 := null) return varchar2;--function get_numFmt(p_format varchar2 := null) return pls_integer;--function get_font(p_name      varchar2,p_family    pls_integer := 2,p_fontsize  number := 11,p_theme     pls_integer := 1,p_underline boolean := false,p_italic    boolean := false,p_bold      boolean := false,p_rgb       varchar2 := null -- this is a hex ALPHA Red Green Blue value) return pls_integer;--function get_fill(p_patternType varchar2,p_fgRGB       varchar2 := null -- this is a hex ALPHA Red Green Blue value) return pls_integer;--function get_border(p_top    varchar2 := 'thin',p_bottom varchar2 := 'thin',p_left   varchar2 := 'thin',p_right  varchar2 := 'thin')/*nonethinmediumdasheddottedthickdoublehairmediumDasheddashDotmediumDashDotdashDotDotmediumDashDotDotslantDashDot*/return pls_integer;--function get_alignment(p_vertical   varchar2 := null,p_horizontal varchar2 := null,p_wrapText   boolean := null)/* horizontalcentercenterContinuousdistributedfillgeneraljustifyleftright*//* verticalbottomcenterdistributedjustifytop*/return tp_alignment;--procedure cell(p_col       pls_integer,p_row       pls_integer,p_value     number,p_numFmtId  pls_integer := null,p_fontId    pls_integer := null,p_fillId    pls_integer := null,p_borderId  pls_integer := null,p_alignment tp_alignment := null,p_sheet     pls_integer := null);--procedure cell(p_col       pls_integer,p_row       pls_integer,p_value     varchar2,p_numFmtId  pls_integer := null,p_fontId    pls_integer := null,p_fillId    pls_integer := null,p_borderId  pls_integer := null,p_alignment tp_alignment := null,p_sheet     pls_integer := null);--procedure cell(p_col       pls_integer,p_row       pls_integer,p_value     date,p_numFmtId  pls_integer := null,p_fontId    pls_integer := null,p_fillId    pls_integer := null,p_borderId  pls_integer := null,p_alignment tp_alignment := null,p_sheet     pls_integer := null);--procedure hyperlink(p_col   pls_integer,p_row   pls_integer,p_url   varchar2,p_value varchar2 := null,p_sheet pls_integer := null);--procedure comment(p_col    pls_integer,p_row    pls_integer,p_text   varchar2,p_author varchar2 := null,p_width  pls_integer := 150 -- pixels,p_height pls_integer := 100 -- pixels,p_sheet  pls_integer := null);--procedure mergecells(p_tl_col pls_integer -- top left,p_tl_row pls_integer,p_br_col pls_integer -- bottom right,p_br_row pls_integer,p_sheet  pls_integer := null);--procedure list_validation(p_sqref_col   pls_integer,p_sqref_row   pls_integer,p_tl_col      pls_integer -- top left,p_tl_row      pls_integer,p_br_col      pls_integer -- bottom right,p_br_row      pls_integer,p_style       varchar2 := 'stop' -- stop, warning, information,p_title       varchar2 := null,p_prompt      varchar := null,p_show_error  boolean := false,p_error_title varchar2 := null,p_error_txt   varchar2 := null,p_sheet       pls_integer := null);--procedure list_validation(p_sqref_col    pls_integer,p_sqref_row    pls_integer,p_defined_name varchar2,p_style        varchar2 := 'stop' -- stop, warning, information,p_title        varchar2 := null,p_prompt       varchar := null,p_show_error   boolean := false,p_error_title  varchar2 := null,p_error_txt    varchar2 := null,p_sheet        pls_integer := null);--procedure defined_name(p_tl_col     pls_integer -- top left,p_tl_row     pls_integer,p_br_col     pls_integer -- bottom right,p_br_row     pls_integer,p_name       varchar2,p_sheet      pls_integer := null,p_localsheet pls_integer := null);--procedure set_column_width(p_col   pls_integer,p_width number,p_sheet pls_integer := null);--procedure set_column(p_col       pls_integer,p_numFmtId  pls_integer := null,p_fontId    pls_integer := null,p_fillId    pls_integer := null,p_borderId  pls_integer := null,p_alignment tp_alignment := null,p_sheet     pls_integer := null);--procedure set_row(p_row       pls_integer,p_numFmtId  pls_integer := null,p_fontId    pls_integer := null,p_fillId    pls_integer := null,p_borderId  pls_integer := null,p_alignment tp_alignment := null,p_sheet     pls_integer := null);--procedure freeze_rows(p_nr_rows pls_integer := 1,p_sheet   pls_integer := null);--procedure freeze_cols(p_nr_cols pls_integer := 1,p_sheet   pls_integer := null);--procedure freeze_pane(p_col   pls_integer,p_row   pls_integer,p_sheet pls_integer := null);--procedure set_autofilter(p_column_start pls_integer := null,p_column_end   pls_integer := null,p_row_start    pls_integer := null,p_row_end      pls_integer := null,p_sheet        pls_integer := null);--function finish return blob;--procedure save(p_blob blob, p_directory varchar2, p_filename varchar2);-----当p_footer设定参数为真，这个g_query2sheet_footer有值，则会显示这个值的内容。没有则默认是Generated xxxx---有一点说明的是，&ROWS 字段会被自动替换为结果返回的行数。g_query2sheet_footer varchar2(1000);g_query2sheet_rows   number; --结果返回的是多少行记录--这个是这个程序的"完全体"procedure query2sheet(p_sql            varchar2,p_col_value_tab  CUX_XLSX_MAKER_PKG.TAB_COL_VALUE ---运行的动态SQL的绑定变量,p_column_headers boolean := true,p_directory      varchar2 := null,p_filename       varchar2 := null,p_sheet          pls_integer := null,p_footer         boolean := true,x_retcode        OUT NUMBER ---0:成功  非0:失败( 或者：0:成功  1:警告   2:错误  ----注意：确定警告的时候要做什么动作),x_errbuf         OUT VARCHAR2 ---具体的错误信息,p_file_name      varchar2,X_FILE_ID        OUT NUMBER);---默认用上绑定变量的逻辑！procedure query2sheet(p_sql            varchar2,p_column_headers boolean := true,p_directory      varchar2 := null,p_filename       varchar2 := null,p_sheet          pls_integer := null,p_footer         boolean := true,x_retcode        OUT NUMBER ---0:成功  非0:失败( 或者：0:成功  1:警告   2:错误  ----注意：确定警告的时候要做什么动作),x_errbuf         OUT VARCHAR2 ---具体的错误信息,p_file_name      varchar2,X_FILE_ID        OUT NUMBER);---最简单的使用版本procedure query2sheet(p_sql            varchar2,p_column_headers boolean := true,p_directory      varchar2 := null,p_filename       varchar2 := null,p_sheet          pls_integer := null,p_footer         boolean := true,p_file_name      varchar2,P_COLUMN_WIDTHS  IN TAB_COL_WIDTHS,X_FILE_ID        OUT NUMBER);---参考老外的，另外封装的一个好用的过程！游标直接输出excel。未测试过~procedure cursor2sheet(p_sql            in sys_refcursor,p_column_headers boolean := true,p_directory      varchar2 := null,p_filename       varchar2 := null,p_sheet          pls_integer := null,p_footer         boolean := true);--
end;
/
create or replace package body CUX_XLSX_MAKER_PKG is--c_LOCAL_FILE_HEADER        constant raw(4) := hextoraw('504B0304'); -- Local file header signaturec_END_OF_CENTRAL_DIRECTORY constant raw(4) := hextoraw('504B0506'); -- End of central directory signature--type tp_XF_fmt is record(numFmtId  pls_integer,fontId    pls_integer,fillId    pls_integer,borderId  pls_integer,alignment tp_alignment);type tp_col_fmts is table of tp_XF_fmt index by pls_integer;type tp_row_fmts is table of tp_XF_fmt index by pls_integer;type tp_widths is table of number index by pls_integer;type tp_cell is record(value number,style varchar2(50));type tp_cells is table of tp_cell index by pls_integer;type tp_rows is table of tp_cells index by pls_integer;type tp_autofilter is record(column_start pls_integer,column_end   pls_integer,row_start    pls_integer,row_end      pls_integer);type tp_autofilters is table of tp_autofilter index by pls_integer;type tp_hyperlink is record(cell varchar2(10),url  varchar2(1000));type tp_hyperlinks is table of tp_hyperlink index by pls_integer;subtype tp_author is varchar2(32767 char);type tp_authors is table of pls_integer index by tp_author;authors tp_authors;type tp_comment is record(text   varchar2(32767 char),author tp_author,row    pls_integer,column pls_integer,width  pls_integer,height pls_integer);type tp_comments is table of tp_comment index by pls_integer;type tp_mergecells is table of varchar2(21) index by pls_integer;type tp_validation is record(type             varchar2(10),errorstyle       varchar2(32),showinputmessage boolean,prompt           varchar2(32767 char),title            varchar2(32767 char),error_title      varchar2(32767 char),error_txt        varchar2(32767 char),showerrormessage boolean,formula1         varchar2(32767 char),formula2         varchar2(32767 char),allowBlank       boolean,sqref            varchar2(32767 char));type tp_validations is table of tp_validation index by pls_integer;type tp_sheet is record(rows        tp_rows,widths      tp_widths,name        varchar2(100),freeze_rows pls_integer,freeze_cols pls_integer,autofilters tp_autofilters,hyperlinks  tp_hyperlinks,col_fmts    tp_col_fmts,row_fmts    tp_row_fmts,comments    tp_comments,mergecells  tp_mergecells,validations tp_validations);type tp_sheets is table of tp_sheet index by pls_integer;type tp_numFmt is record(numFmtId   pls_integer,formatCode varchar2(100));type tp_numFmts is table of tp_numFmt index by pls_integer;type tp_fill is record(patternType varchar2(30),fgRGB       varchar2(8));type tp_fills is table of tp_fill index by pls_integer;type tp_cellXfs is table of tp_xf_fmt index by pls_integer;type tp_font is record(name      varchar2(100),family    pls_integer,fontsize  number,theme     pls_integer,RGB       varchar2(8),underline boolean,italic    boolean,bold      boolean);type tp_fonts is table of tp_font index by pls_integer;type tp_border is record(top    varchar2(17),bottom varchar2(17),left   varchar2(17),right  varchar2(17));type tp_borders is table of tp_border index by pls_integer;type tp_numFmtIndexes is table of pls_integer index by pls_integer;type tp_strings is table of pls_integer index by varchar2(32767 char);type tp_str_ind is table of varchar2(32767 char) index by pls_integer;type tp_defined_name is record(name  varchar2(32767 char),ref   varchar2(32767 char),sheet pls_integer);type tp_defined_names is table of tp_defined_name index by pls_integer;type tp_book is record(sheets        tp_sheets,strings       tp_strings,str_ind       tp_str_ind,str_cnt       pls_integer := 0,fonts         tp_fonts,fills         tp_fills,borders       tp_borders,numFmts       tp_numFmts,cellXfs       tp_cellXfs,numFmtIndexes tp_numFmtIndexes,defined_names tp_defined_names);workbook tp_book;lc_rows  tp_rows; --new 2015.5.27G_COLUMN_WIDTHS   TAB_COL_WIDTHS;--PROCEDURE DEBUGLOG(P_MSG IN VARCHAR2) ISBEGINIF G_DEBUG_TYPE = 'DBMS_OUTPUT' THENDBMS_OUTPUT.PUT_LINE(P_MSG);ELSIF G_DEBUG_TYPE = 'FILE_OUTPUT' THEN--XYG_FND_FILE.PUT_LINE(FND_FILE.OUTPUT, P_MSG);NULL;ELSIF G_DEBUG_TYPE = 'REQUEST_OUTPUT' THEN--LOG(P_MSG);--FND_FILE.PUT_LINE (FND_FILE.LOG, P_MSG);NULL;END IF;END DEBUGLOG;procedure blob2file(p_blob      blob,p_directory varchar2 := 'MY_DIR',p_filename  varchar2 := 'my.xlsx') ist_fh  utl_file.file_type;t_len pls_integer := 32767;begint_fh := utl_file.fopen(p_directory, p_filename, 'wb');for i in 0 .. trunc((dbms_lob.getlength(p_blob) - 1) / t_len) looputl_file.put_raw(t_fh, dbms_lob.substr(p_blob, t_len, i * t_len + 1));end loop;utl_file.fclose(t_fh);end;--function raw2num(p_raw raw, p_len integer, p_pos integer) return number isbeginreturn utl_raw.cast_to_binary_integer(utl_raw.substr(p_raw,p_pos,p_len),utl_raw.little_endian);end;--function little_endian(p_big number, p_bytes pls_integer := 4) return raw isbeginreturn utl_raw.substr(utl_raw.cast_from_binary_integer(p_big,utl_raw.little_endian),1,p_bytes);end;--function blob2num(p_blob blob, p_len integer, p_pos integer) return number isbeginreturn utl_raw.cast_to_binary_integer(dbms_lob.substr(p_blob,p_len,p_pos),utl_raw.little_endian);end;--procedure add1file(p_zipped_blob in out blob,p_name        varchar2,p_content     blob) ist_now        date;t_blob       blob;t_len        integer;t_clen       integer;t_crc32      raw(4) := hextoraw('00000000');t_compressed boolean := false;t_name       raw(32767);begint_now := sysdate;t_len := nvl(dbms_lob.getlength(p_content), 0);if t_len > 0 thent_blob       := utl_compress.lz_compress(p_content);t_clen       := dbms_lob.getlength(t_blob) - 18;t_compressed := t_clen < t_len;t_crc32      := dbms_lob.substr(t_blob, 4, t_clen + 11);end if;if not t_compressed thent_clen := t_len;t_blob := p_content;end if;if p_zipped_blob is null thendbms_lob.createtemporary(p_zipped_blob, true);end if;t_name := utl_i18n.string_to_raw(p_name, 'AL32UTF8');dbms_lob.append(p_zipped_blob,utl_raw.concat(c_LOCAL_FILE_HEADER -- Local file header signature,hextoraw('1400') -- version 2.0,case whent_name =utl_i18n.string_to_raw(p_name, 'US8PC437') thenhextoraw('0000') -- no General purpose bitselse hextoraw('0008') -- set Language encoding flag (EFS)end,case when t_compressed thenhextoraw('0800') -- deflateelse hextoraw('0000') -- storedend,little_endian(to_number(to_char(t_now,'ss')) / 2 +to_number(to_char(t_now,'mi')) * 32 +to_number(to_char(t_now,'hh24')) * 2048,2) -- File last modification time,little_endian(to_number(to_char(t_now,'dd')) +to_number(to_char(t_now,'mm')) * 32 +(to_number(to_char(t_now,'yyyy')) - 1980) * 512,2) -- File last modification date,t_crc32 -- CRC-32,little_endian(t_clen) -- compressed size,little_endian(t_len) -- uncompressed size,little_endian(utl_raw.length(t_name), 2) -- File name length,hextoraw('0000') -- Extra field length,t_name -- File name));if t_compressed thendbms_lob.copy(p_zipped_blob,t_blob,t_clen,dbms_lob.getlength(p_zipped_blob) + 1,11); -- compressed contentelsif t_clen > 0 thendbms_lob.copy(p_zipped_blob,t_blob,t_clen,dbms_lob.getlength(p_zipped_blob) + 1,1); --  contentend if;if dbms_lob.istemporary(t_blob) = 1 thendbms_lob.freetemporary(t_blob);end if;end;--procedure finish_zip(p_zipped_blob in out blob) ist_cnt             pls_integer := 0;t_offs            integer;t_offs_dir_header integer;t_offs_end_header integer;t_comment         raw(32767) := utl_raw.cast_to_raw('Implementation by Anton Scheffer');begint_offs_dir_header := dbms_lob.getlength(p_zipped_blob);t_offs            := 1;while dbms_lob.substr(p_zipped_blob,utl_raw.length(c_LOCAL_FILE_HEADER),t_offs) = c_LOCAL_FILE_HEADER loopt_cnt := t_cnt + 1;dbms_lob.append(p_zipped_blob,utl_raw.concat(hextoraw('504B0102') -- Central directory file header signature,hextoraw('1400') -- version 2.0,dbms_lob.substr(p_zipped_blob,26,t_offs + 4),hextoraw('0000') -- File comment length,hextoraw('0000') -- Disk number where file starts,hextoraw('0000') -- Internal file attributes =>--     0000 binary file--     0100 (ascii)text file,case when dbms_lob.substr(p_zipped_blob,1,t_offs + 30 +blob2num(p_zipped_blob,2,t_offs + 26) - 1) in(hextoraw('2F') -- /,hextoraw('5C') -- \) then hextoraw('10000000') -- a directory/folderelse hextoraw('2000B681') -- a fileend -- External file attributes,little_endian(t_offs - 1) -- Relative offset of local file header,dbms_lob.substr(p_zipped_blob,blob2num(p_zipped_blob,2,t_offs + 26),t_offs + 30) -- File name));t_offs := t_offs + 30 + blob2num(p_zipped_blob, 4, t_offs + 18) -- compressed size+ blob2num(p_zipped_blob, 2, t_offs + 26) -- File name length+ blob2num(p_zipped_blob, 2, t_offs + 28); -- Extra field lengthend loop;t_offs_end_header := dbms_lob.getlength(p_zipped_blob);dbms_lob.append(p_zipped_blob,utl_raw.concat(c_END_OF_CENTRAL_DIRECTORY -- End of central directory signature,hextoraw('0000') -- Number of this disk,hextoraw('0000') -- Disk where central directory starts,little_endian(t_cnt, 2) -- Number of central directory records on this disk,little_endian(t_cnt, 2) -- Total number of central directory records,little_endian(t_offs_end_header -t_offs_dir_header) -- Size of central directory,little_endian(t_offs_dir_header) -- Offset of start of central directory, relative to start of archive,little_endian(nvl(utl_raw.length(t_comment),0),2)