需要使用Windows窗体（C＃）将数据从XML导入SQL
这是将数据从XML文档导入SQL的代码，我不知道如何处理XML属性的名称是否与表中的某个SQL属性匹配，导入数据只匹配属性，如果它不匹配导入空数据。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.OleDb;
using System.Data.SqlClient;
using System.Xml;
namespace XML_A_BD
{
public partial class Form1 : Form
{
string archivo = "";
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
string strConn = "Data Source=(LOCAL);Initial Catalog=master;Integrated Security=true";
string strSQL = "SELECT name FROM sys.databases order by name";
SqlConnection scnnRegistro = new SqlConnection(strConn);
SqlCommand scmd = new SqlCommand(strSQL, scnnRegistro);
try
{
scnnRegistro.Open();
SqlDataReader sdr = scmd.ExecuteReader(CommandBehavior.CloseConnection);
while (sdr.Read())
{
comboBoxBase.Items.Add(sdr.GetString(0).ToString());
}
sdr.Close();
comboBoxBase.SelectedIndex = 0;
}
catch (SqlException expSql)
{
MessageBox.Show(expSql.ToString());
}
}
private void comboBoxBase_SelectedIndexChanged(object sender, EventArgs e)
{
string strConn = "Data Source=(LOCAL);Initial Catalog =master;Integrated Security=SSPI";
string strSQL = "SELECT name FROM " + comboBoxBase.SelectedItem.ToString();
strSQL += ".sys.objects where type = 'U' order by name";
MessageBox.Show(strSQL);
SqlConnection scnnRegistro = new SqlConnection(strConn);
SqlCommand scmd = new SqlCommand(strSQL, scnnRegistro);
try
{
scnnRegistro.Open();
SqlDataReader sdr = scmd.ExecuteReader(CommandBehavior.CloseConnection);
while (sdr.Read())
{
comboBoxTabla.Items.Add(sdr.GetString(0).ToString());
}
sdr.Close();
}
catch (SqlException expSql)
{
MessageBox.Show(expSql.ToString());
}
comboBoxTabla.SelectedIndex = 0;
}
private void buttonSalir_Click(object sender, EventArgs e)
{
DialogResult dialog = MessageBox.Show("Seguro que desea salir?", "Salir", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (dialog == DialogResult.Yes)
{
this.Dispose();
}
}
private void buttonSeleccionar_Click(object sender, EventArgs e)
{
try
{
OpenFileDialog abrir = new OpenFileDialog();
abrir.Filter = "Archivos XML(*.xml)|*.xml|Todos los archivos(*.*)|*.*";
abrir.FilterIndex = 0;
abrir.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
//guardar.Filename = tabla;
if (abrir.ShowDialog() == DialogResult.OK)
{
archivo = abrir.FileName;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void buttonCargar_Click(object sender, EventArgs e)
{
bool bandera = false;
//Esto lee los nombres de la tabla
/*System.Xml.XmlTextReader lee = new System.Xml.XmlTextReader(archivo);
string contents = "";
while (lee.Read())
{
lee.MoveToContent();
if (lee.NodeType == System.Xml.XmlNodeType.Element)
{
contents += "<" + lee.Name + ">\n";
*/
try
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(archivo);
XmlNodeList dataNodes = xmlDoc.SelectNodes("/" + comboBoxBase.SelectedItem.ToString() + "/" + comboBoxTabla.SelectedItem.ToString());
foreach (XmlNode node in dataNodes)
{
string sql = "";
XmlNodeList lstNodos = node.ChildNodes;
MessageBox.Show(lstNodos.Count.ToString());
int contador = 0;
string[] atributos = new string[lstNodos.Count];
string[] valores = new string[lstNodos.Count];
/*string[] nombres = new string[lstNodos.Count];*/
sql = "Insert into " + comboBoxBase.SelectedItem.ToString();
sql = sql + ".." + comboBoxTabla.SelectedItem.ToString() + " values (";
foreach (XmlNode nodoHijo in lstNodos)
{
MessageBox.Show(nodoHijo.Name); //Nombre de la etiqueta del nodo
MessageBox.Show(nodoHijo.InnerText);
atributos[contador] = "@" + nodoHijo.Name;
valores[contador] = nodoHijo.InnerText;
sql = sql + (++contador < lstNodos.Count ? "@" + nodoHijo.Name + "," : "@" + nodoHijo.Name);
}
sql = sql + ")";
//sql = "insert into banco..prestamo values(1,1,6,3000.00)";
MessageBox.Show(sql);
try
{
string conexion = "Data Source=(local);Initial Catalog=master;Integrated Security=SSPI";
SqlConnection conn = new SqlConnection(conexion);
//using (command = new SqlCommand(sql, conn));
SqlCommand comando = new SqlCommand(sql, conn);
for (int i = 0; i < lstNodos.Count; i++)
{
//comando.Parameters.AddWithValue(atributos[i], (i < 3 ? int.Parse(valores)))
comando.Parameters.AddWithValue(atributos[i], valores[i]);
MessageBox.Show(atributos[i] + " " + valores[i]);
}
conn.Open();
comando.ExecuteNonQuery();
conn.Close();
}
catch (SqlException expSql)
{
bandera = true;
MessageBox.Show(expSql.Message);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
if (bandera == true)
{
MessageBox.Show("Se omitieron valores repetidos. Exportacion completa.", "Exito", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
MessageBox.Show("Exportacion a SQL correcta", "Exito", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
}
XML代码
<?xml version="1.0" standalone="yes"?>
<cliente>
<cliente>
<no_cliente>6</no_cliente>
<nombre>Luis</nombre>
<ap_paterno>Franco</ap_paterno>
<ap_materno>Cárdenas</ap_materno>
<calle>Sadi Carnot</calle>
<ciudad_cliente>Distrito Federal</ciudad_cliente>
<password>6</password>
</cliente>
<cliente>
<no_cliente>7</no_cliente>
<nombre>Alberto</nombre>
<ap_paterno>Marín</ap_paterno>
<ap_materno>Pérez</ap_materno>
<calle>Principal</calle>
<ciudad_cliente>Distrito Federal</ciudad_cliente>
<password>7</password>
</cliente>
<cliente>
<no_cliente>8</no_cliente>
<nombre>Roberto</nombre>
<ap_paterno>López</ap_paterno>
<ap_materno>Mora</ap_materno>
<calle>Altavista</calle>
<ciudad_cliente>Guadalajara</ciudad_cliente>
<password>8</password>
</cliente>
<cliente>
<no_cliente>9</no_cliente>
<nombre>Andrea</nombre>
<ap_paterno>Carrillo</ap_paterno>
<ap_materno>Méndez</ap_materno>
<calle>Primavera</calle>
<ciudad_cliente>Monterrey</ciudad_cliente>
<password>9</password>
</cliente>
<cliente>
<no_cliente>10</no_cliente>
<nombre>Daniela</nombre>
<ap_paterno>Torres</ap_paterno>
<ap_materno>Gordillo</ap_materno>
<calle>Ing. Militares</calle>
<ciudad_cliente>Naucalpan</ciudad_cliente>
<password>10</password>
</cliente>
<cliente>
<no_cliente>11</no_cliente>
<nombre>Pedro</nombre>
<ap_paterno>López</ap_paterno>
<ap_materno>Zamorano</ap_materno>
<calle>Barracuda</calle>
<ciudad_cliente>Veracruz</ciudad_cliente>
<password>11</password>
</cliente>
</cliente>
它必须将任何XML文档转换为SQL上的表。如果它与属性的名称匹配。
1 个答案:
答案 0 :(得分：1)
好的，所以你想将XML数据导入到SQL表中的相应列（字段）......
在SQL Server上创建表和存储过程
/****** Object: Table [dbo].[cliente] Script Date: 21/04/2016 01:08:28 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[cliente](
[no_cliente] [nvarchar](max) NULL,
[nombre] [nvarchar](max) NULL,
[ap_paterno] [nvarchar](max) NULL,
[ap_materno] [nvarchar](max) NULL,
[calle] [nvarchar](max) NULL,
[ciudad_cliente] [nvarchar](max) NULL,
[password] [nvarchar](max) NULL
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
/****** Object: StoredProcedure [dbo].[SP_InsertXMLData] Script Date: 21/04/2016 01:08:28 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[SP_InsertXMLData] (@InputXML xml)
as
begin
MERGE cliente AS main
USING (select Row.id.value('@no_cliente','[nvarchar](MAX)') as no_cliente, Row.id.value('@nombre','[nvarchar](MAX)') as nombre, Row.id.value('@ap_paterno','[nvarchar](MAX)') as ap_paterno, Row.id.value('@ap_materno','[nvarchar](MAX)') as ap_materno
, Row.id.value('@calle','[nvarchar](MAX)') as calle, Row.id.value('@ciudad_cliente','[nvarchar](MAX)') as ciudad_cliente, Row.id.value('@password','[nvarchar](MAX)') as password
from @InputXML.nodes('/Root/CSVDataRecord') as Row(id)) as stage
ON main.password=stage.password
WHEN MATCHED THEN
UPDATE SET main.no_cliente=stage.no_cliente, main.nombre=stage.nombre, main.ap_paterno=stage.ap_paterno, main.ap_materno=stage.ap_materno , main.calle=stage.calle , main.ciudad_cliente=stage.ciudad_cliente, main.password=stage.password
WHEN NOT MATCHED THEN
INSERT (no_cliente, nombre, ap_paterno, ap_materno, calle, ciudad_cliente, password)
VALUES (stage.no_cliente, stage.nombre, stage.ap_paterno, stage.ap_materno, stage.calle, stage.ciudad_cliente, stage.password);
end
GO
这是代码
Usings
using System.Data;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using System.IO;
using System.Linq;
using System.Xml.Linq;
代码...更新!!!
我修改了LINQ语句，以便在缺少元素（在XML中）时，新的XAttribute [发送到存储过程]默认为null ......
static void Main(string[] args)
{
string strXML = File.ReadAllText("xml.xml");
XDocument xmlsrcdoc = XDocument.Parse(strXML);
using (SqlConnection connection = new SqlConnection("<Your connection string>"))
{
SqlCommand command = connection.CreateCommand();
connection.Open();
command.CommandType = System.Data.CommandType.StoredProcedure;
command.CommandText = "SP_InsertXMLData";
XElement XMLData = new XElement("Root",
from xml in xmlsrcdoc.Descendants("cliente").Descendants("cliente")
select new XElement("CSVDataRecord",
new XAttribute("no_cliente", (string)xml.Element("no_cliente") ?? ""),
new XAttribute("nombre", (string)xml.Element("nombre") ?? ""),
new XAttribute("ap_paterno", (string)xml.Element("ap_paterno") ?? ""),
new XAttribute("ap_materno", (string)xml.Element("ap_materno") ?? ""),
new XAttribute("calle", (string)xml.Element("calle") ?? ""),
new XAttribute("ciudad_cliente", (string)xml.Element("ciudad_cliente") ?? ""),
new XAttribute("password", (string)xml.Element("password") ?? "")
)
);
command.Parameters.Clear();
command.Parameters.Add(new SqlParameter
{
ParameterName = "@InputXML",
SqlDbType = SqlDbType.Xml,
Value = new SqlXml(XMLData.CreateReader())
});
command.ExecuteNonQuery();
}
}
这是数据导入后SQL表的图片....
将XML保存到与.EXE相同的文件夹中的文件（xml.xml）中......希望有所帮助。
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