xml与DataSet的互转换类
以前在博客上发过，经人提醒DataSet已自带读写XML的功能，于是便删了，
不过在实践中感觉封装一层后，使用起来还是蛮方便的。故再次重发。
using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.IO;
using System.Xml;
namespace XmlDesign
{
class XmlDatasetConvert
{
//将xml对象内容字符串转换为DataSet
public static DataSet ConvertXMLToDataSet(string xmlData)
{
StringReader stream = null;
XmlTextReader reader = null;
try
{
DataSet xmlDS = new DataSet();
stream = new StringReader(xmlData);
//从stream装载到XmlTextReader
reader = new XmlTextReader(stream);
xmlDS.ReadXml(reader);
return xmlDS;
}
catch (System.Exception ex)
{
throw ex;
}
finally
{
if (reader != null) reader.Close();
}
}
//将xml文件转换为DataSet
public static DataSet ConvertXMLFileToDataSet(string xmlFile)
{
StringReader stream = null;
XmlTextReader reader = null;
try
{
XmlDocument xmld = new XmlDocument();
xmld.Load(xmlFile);
DataSet xmlDS = new DataSet();
stream = new StringReader(xmld.InnerXml);
//从stream装载到XmlTextReader
reader = new XmlTextReader(stream);
xmlDS.ReadXml(reader);
//xmlDS.ReadXml(xmlFile);
return xmlDS;
}
catch (System.Exception ex)
{
throw ex;
}
finally
{
if (reader != null) reader.Close();
}
}
//将DataSet转换为xml对象字符串
public static string ConvertDataSetToXML(DataSet xmlDS)
{
MemoryStream stream = null;
XmlTextWriter writer = null;
try
{
stream = new MemoryStream();
//从stream装载到XmlTextReader
writer = new XmlTextWriter(stream, Encoding.Unicode);
//用WriteXml方法写入文件.
xmlDS.WriteXml(writer);
int count = (int)stream.Length;
byte[] arr = new byte[count];
stream.Seek(0, SeekOrigin.Begin);
stream.Read(arr, 0, count);
UnicodeEncoding utf = new UnicodeEncoding();
return utf.GetString(arr).Trim();
}
catch (System.Exception ex)
{
throw ex;
}
finally
{
if (writer != null) writer.Close();
}
}
//将DataSet转换为xml文件
public static void ConvertDataSetToXMLFile(Dat
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现象描述：JDom输出Xml文件，当使用字符编码GBK时正常，而输出UTF-8时乱码。
完美的解决方法从辟谣开始：
1）JDOM是否生成UTF-8的文件与Format是否设置无关，只有输出其他字符编码才需要设置，见下面的注释。
& ......
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and open the template in the editor.
-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title ......
PHP从PHP5开始，彻底重新编写的和新增了对XML的扩展，如 SAX 解析器、DOM、SimpleXML、XMLReader、XMLWriter 和 XSLT 处理程序。所有这些扩展都以 libxml2 为基础。
=============================
1、DOMDocument对象常用方法：
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a）createElement(elementName)
该� ......
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileWriter;
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import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
imp ......
