> When I try to print out tbl[1][1]:
>
> io.write(tostring(tbl[1][cusomer_cnt]))
>
> the print out result is: nil
Apart from the typo (cusomer_cnt instead of customer_cnt), I’m not sure what you expect from the call.
This is what is contained in tbl:
{
[1] = "
",
[2] =
{
[1] = "
",
[2] =
{
[1] = "
",
[2] =
{
[1] = "XYZ Market",
["attr"] =
{
},
["tag"] = "CompanyName",
},
[3] = "
",
[4] =
{
[1] = "John Doe",
["attr"] =
{
},
["tag"] = "ContactName",
},
[5] = "
",
[6] =
{
[1] = "Marketing Manager",
["attr"] =
{
},
["tag"] = "ContactTitle",
},
[7] = "
",
[8] =
{
[1] = "(212) 555-1212",
["attr"] =
{
},
["tag"] = "Phone",
},
[9] = "
",
[10] =
{
[1] = "
",
[2] =
{
[1] = "100 Park Avenue.",
["attr"] =
{
},
["tag"] = "Address",
},
[3] = "
",
[4] =
{
[1] = "New York",
["attr"] =
{
},
["tag"] = "City",
},
[5] = "
",
[6] =
{
[1] = "NY",
["attr"] =
{
},
["tag"] = "State",
},
[7] = "
",
["attr"] =
{
},
["tag"] = "FullAddress",
},
[11] = "
",
["attr"] =
{
[1] = "CustomerID",
["CustomerID"] = "XYZ",
},
["tag"] = "Customer",
},
[3] = "
",
["attr"] =
{
},
["tag"] = "Customers",
},
[3] = "
",
["attr"] =
{
},
["tag"] = "Root",
}
Check the LuaExpat documentation [1] for details on the table format.
Tom
[1] http://matthewwild.co.uk/projects/luaexpat/lom.html
From: lua-l-bounces@lists.lua.org [mailto:lua-l-bounces@lists.lua.org]
On Behalf Of Jim zhang
Sent: Wednesday, February 06, 2013 3:56 PM
To: Lua mailing list
Subject: xml parsing problem
I try to use lxp.lom to parse xml file, but it gives empty table. Here is the code:
-- setup XML parser
local lom = require "lxp.lom"
--define global variables
tbl = {}
customer_cnt = 1
function initialize()
-- create a file handle to the file
local handle = io.open("testxml.xml","r")
-- read and parse the XML document
tbl = lom.parse(handle:read("*a"))
handle:close()
end;
When I try to print out tbl[1][1]:
io.write(tostring(tbl[1][cusomer_cnt]))
the print out result is: nil
testxml.xml file:
<?xmlversion="1.0" encoding="utf-8"?>
<Root>
<Customers>
<Customer CustomerID="XYZ">
<CompanyName>XYZ Market</CompanyName>
<ContactName>John Doe</ContactName>
<ContactTitle>Marketing Manager</ContactTitle>
<Phone>(212) 555-1212</Phone>
<FullAddress>
<Address>100 Park Avenue.</Address>
<City>New York</City>
<State>NY</State>
</FullAddress>
</Customer>
</Customers>
</Root>
Not sure what I did incorrectly here, I would like to get some help. Thank you very much!
Jim