Haw*_*awk 14 sql json plsql oracle11g
我创建了以下脚本,以便从Oracle SQL Developer中读取Mobile App DB(基于MongoDB)的数据:
DECLARE
l_param_list VARCHAR2(512);
l_http_request UTL_HTTP.req;
l_http_response UTL_HTTP.resp;
l_response_text VARCHAR2(32767);
BEGIN
-- service's input parameters
-- preparing Request...
l_http_request := UTL_HTTP.begin_request ('https://api.appery.io/rest/1/db/collections/Photos?where=%7B%22Oracle_Flag%22%3A%22Y%22%7D'
, 'GET'
, 'HTTP/1.1');
-- ...set header's attributes
UTL_HTTP.set_header(l_http_request, 'X-Appery-Database-Id', '53f2dac5e4b02cca64021dbe');
--UTL_HTTP.set_header(l_http_request, 'Content-Length', LENGTH(l_param_list));
-- ...set input parameters
-- UTL_HTTP.write_text(l_http_request, l_param_list);
-- get Response and obtain received value
l_http_response := UTL_HTTP.get_response(l_http_request);
UTL_HTTP.read_text(l_http_response, l_response_text);
DBMS_OUTPUT.put_line(l_response_text);
insert into appery values(l_response_text);
-- finalizing
UTL_HTTP.end_response(l_http_response);
EXCEPTION
WHEN UTL_HTTP.end_of_body
THEN UTL_HTTP.end_response(l_http_response);
END;
/
响应(l_response_text)是类似JSON的字符串.例如:
[{"Postcode":"47100","OutletCode":"128039251","MobileNumber":"0123071303","_createdAt":"2014-11-10 06:12:49.837","_updatedAt":"2014-11-10 06:12:49.837"}, {"Postcode":"32100","OutletCode":"118034251", ..... ]
代码工作正常,并将响应插入到一个名为appery的列表中.但是,我需要解析这个响应,使每个数组进入名为appery_test的表中的特定列.表appery_test有许多列,与JSON对的数量相同,顺序相同.
我搜索了一下,我发现了将Oracle表解析为JSON的大部分结果,而不是相反的结果.不过,我发现这个链接有点类似于我的问题.但是,答案中建议的库没有任何关于如何使用它来使用PL/SQL将JSON插入常规表的示例.
注意:我使用的是11g,而不是12c.所以内置函数不适合我.
Ola*_*son 14
由于这个问题在结果中得分很高,我想发布这个首选的替代方案:
Oracle发布了APEX 5.0(2015年4月15日).有了它,您可以访问一个很棒的API来使用JSON
我在11.2上使用它并且能够处理每个json,从具有多个阵列和4/5级别的简单到非常复杂的对象. APEX_JSON
如果您不想使用APEX.只需安装运行时环境即可访问API.
示例用法,来自json.org示例的数据:
declare
sample_json varchar2 (32767)
:= '{
"glossary": {
"title": "example glossary",
"GlossDiv": {
"title": "S",
"GlossList": {
"GlossEntry": {
"ID": "SGML",
"SortAs": "SGML",
"GlossTerm": "Standard Generalized Markup Language",
"Acronym": "SGML",
"Abbrev": "ISO 8879:1986",
"GlossDef": {
"para": "A meta-markup language, used to create markup languages such as DocBook.",
"GlossSeeAlso": ["GML", "XML"]
},
"GlossSee": "markup"
}
}
}
}
}';
begin
apex_json.parse (sample_json);
dbms_output.put_line (apex_json.get_varchar2 ('glossary.GlossDiv.title'));
dbms_output.put_line (apex_json.get_varchar2 ('glossary.GlossDiv.GlossList.GlossEntry.GlossTerm'));
dbms_output.put_line (apex_json.get_varchar2 ('glossary.GlossDiv.GlossList.GlossEntry.GlossDef.GlossSeeAlso[%d]', 2));
end;
结果:执行了PL/SQL块
S
Standard Generalized Markup Language
XML
我使用了PL/JSON库.具体来说,JSON_EXT包函数是为了解析它.
受Oracle社区答案启发的以下脚本为我工作
DECLARE
l_param_list VARCHAR2(512);
l_http_request UTL_HTTP.req;
l_http_response UTL_HTTP.resp;
l_response_text VARCHAR2(32767);
l_list json_list;
A_id VARCHAR2(200);
UserId VARCHAR2(100);
UserName VARCHAR2(100);
OutletCode VARCHAR2(100);
OutletName VARCHAR2(100);
MobileNumber VARCHAR2(100);
PhoneNumber VARCHAR2(100);
Address VARCHAR2(100);
City VARCHAR2(100);
State VARCHAR2(100);
Postcode VARCHAR2(100);
Email VARCHAR2(100);
UpdateCount VARCHAR2(100);
loginCount VARCHAR2(100);
ReferencePhoto VARCHAR2(100);
Updates VARCHAR2(100);
AccountLocked VARCHAR2(100);
Oracle_Flag VARCHAR2(100);
acl VARCHAR2(100);
BEGIN
-- service's input parameters
-- preparing Request...
l_http_request := UTL_HTTP.begin_request('https://api.appery.io/rest/1/db/collections/Outlet_Details?where=%7B%22Oracle_Flag%22%3A%22Y%22%7D'
, 'GET'
, 'HTTP/1.1');
-- ...set header's attributes
UTL_HTTP.set_header(l_http_request, 'X-Appery-Database-Id', '53f2dac5e4b02cca64021dbe');
--UTL_HTTP.set_header(l_http_request, 'Content-Length', LENGTH(l_param_list));
-- ...set input parameters
-- UTL_HTTP.write_text(l_http_request, l_param_list);
-- get Response and obtain received value
l_http_response := UTL_HTTP.get_response(l_http_request);
UTL_HTTP.read_text(l_http_response, l_response_text);
DBMS_OUTPUT.put_line(l_response_text);
l_list := json_list(l_response_text);
FOR i IN 1..l_list.count
LOOP
A_id := json_ext.get_string(json(l_list.get(i)),'_id');
UserId := json_ext.get_string(json(l_list.get(i)),'UserId');
UserName := json_ext.get_string(json(l_list.get(i)),'UserName');
OutletCode := json_ext.get_string(json(l_list.get(i)),'OutletCode');
OutletName := json_ext.get_string(json(l_list.get(i)),'OutletName');
MobileNumber := json_ext.get_string(json(l_list.get(i)),'MobileNumber');
PhoneNumber := json_ext.get_string(json(l_list.get(i)),'PhoneNumber');
Address := json_ext.get_string(json(l_list.get(i)),'Address');
City := json_ext.get_string(json(l_list.get(i)),'City');
State := json_ext.get_string(json(l_list.get(i)),'State');
Postcode := json_ext.get_string(json(l_list.get(i)),'Postcode');
Email := json_ext.get_string(json(l_list.get(i)),'Email');
UpdateCount := json_ext.get_string(json(l_list.get(i)),'UpdateCount');
loginCount := json_ext.get_string(json(l_list.get(i)),'loginCount');
ReferencePhoto := json_ext.get_string(json(l_list.get(i)),'ReferencePhoto');
Updates := json_ext.get_string(json(l_list.get(i)),'Updates');
AccountLocked := json_ext.get_string(json(l_list.get(i)),'AccountLocked');
Oracle_Flag := json_ext.get_string(json(l_list.get(i)),'Oracle_Flag');
acl := json_ext.get_string(json(l_list.get(i)),'acl');
insert .....
请注意,json_ext.get_string仅返回VARCHAR2,最大值为32767.为了使用更大的json_list和json_values(> 32KB)的相同包,请在此处查看.
如果你有APEX 5.0及更高版本,通过APEX_JSON包提供更好的选择和更好的性能.有关详细信息,请参阅@ Olafur Tryggvason的回答