xml结构如下:
<?xml version="1.0"?> <customers> <customer> <id>ALFKI</id> <name>Alfreds Futterkiste</name> <address>Obere Str. 57</address> <city>Berlin</city> <postalcode>12209</postalcode> <country>Germany</country> <phone>030-0074321</phone> <fax>030-0076545</fax> <orders> <order> <id>10643</id> <orderdate>1997-08-25T00:00:00</orderdate> <total>814.50</total> </order> <order> <id>10692</id> <orderdate>1997-10-03T00:00:00</orderdate> <total>878.00</total> </order> <order> <id>10702</id> <orderdate>1997-10-13T00:00:00</orderdate> <total>330.00</total> </order> <order> <id>10835</id> <orderdate>1998-01-15T00:00:00</orderdate> <total>845.80</total> </order> <order> <id>10952</id> <orderdate>1998-03-16T00:00:00</orderdate> <total>471.20</total> </order> <order> <id>11011</id> <orderdate>1998-04-09T00:00:00</orderdate> <total>933.50</total> </order> </orders> </customer>....