通过C#动态生成图书信息XML文件-巨人网络通讯

通过C#动态生成图书信息XML文件

通过C#动态生成图书信息XML文件（Books.xml），文件如下：

复制代码代码如下:

 
?xml version="1.0" encoding="iso-8859-1"?> 
bookstore> 

book id="1" category="CHILDREN"> 
title>Harry Potter/title> 
author>J K. Rowling/author> 
publishDate>2005-08-15/publishDate> 
price>29.99/price> 
/book> 

book id="2" category="WEB"> 
title>Learning XML/title> 
author>Erik T. Ray/author> 
publishDate>2003-10-18/publishDate> 
price>39.95/price> 
/book> 

/bookstore> 

方法1：使用StringBuilder拼接XML

复制代码代码如下:

 
/// summary> 
/// 创建图书信息XML 
/// /summary> 
public void CreateBookXML(string fileName) 
{ 
StringBuilder xmlResult = new StringBuilder("?xml version=\"1.0\" encoding=\"utf-8\"?>"); 
ListBookInfo> bookList = GetBookList(); //获取图书列表 
if (bookList != null  bookList.Count > 0) 
{ 
xmlResult.Append("bookstore>"); 
foreach (BookInfo book in bookList) 
{ 
xmlResult.AppendFormat("book id=\"{0}\" category=\"{1}\">", book.BookId, book.Category); 
xmlResult.AppendFormat("title>{0}/title>", book.Title); 
xmlResult.AppendFormat("author>{0}/author>", book.Author); 
xmlResult.AppendFormat("publishDate>{0}/publishDate>", book.PublishDate.ToString("yyyy-MM-dd")); 
xmlResult.AppendFormat("price>{0}/price>", book.Price); 
xmlResult.Append("/book>"); 
} 
xmlResult.Append("/bookstore>"); 
} 

//写入文件 
try 
{ 
//1.创建文件流 
FileStream fileStream = new FileStream(fileName, FileMode.Create); 
//2.创建写入器 
StreamWriter streamWriter = new StreamWriter(fileStream); 
//3.将内容写入文件 
streamWriter.WriteLine(xmlResult); 
//4.关闭写入器 
streamWriter.Close(); 
//5.关闭文件流 
fileStream.Close(); 
} 
catch (Exception e) 
{ } 
} 

方法2：使用XmlTextWriter类创建XML

复制代码代码如下:

 
/// summary> 
/// 创建图书信息XML 
/// /summary> 
/// param name="fileName">/param> 
public void CreateBookXML(string fileName) 
{ 
try 
{ 
FileStream fileStream = new FileStream(fileName, FileMode.Create); 
XmlTextWriter writer = new XmlTextWriter(fileStream, Encoding.UTF8); 
ListBookInfo> bookList = GetBookList(); //获取图书列表 
if (bookList != null  bookList.Count > 0) 
{ 
writer.WriteStartDocument(); 
writer.WriteStartElement("bookstore"); //创建父节点 
foreach (BookInfo book in bookList) 
{ 
writer.WriteStartElement("book"); //创建子节点 
writer.WriteAttributeString("id", book.BookId.ToString()); //添加属性 
writer.WriteAttributeString("category", book.Category); 
//图书名称节点 
writer.WriteStartElement("title"); 
writer.WriteValue(book.Title); //节点赋值 
writer.WriteEndElement(); 
//图书作者节点 
writer.WriteStartElement("author"); 
writer.WriteValue(book.Author); 
writer.WriteEndElement(); 
//出版时间节点 
writer.WriteStartElement("publishDate"); 
writer.WriteValue(book.PublishDate.ToString("yyyy-MM-dd")); 
writer.WriteEndElement(); 
//销售价格节点 
writer.WriteStartElement("price"); 
writer.WriteValue(book.Price); 
writer.WriteEndElement(); 

writer.WriteEndElement(); //子节点结束 
} 
writer.WriteEndElement(); //父节点结束 
} 
writer.WriteEndDocument(); 
writer.Close(); 
fileStream.Close(); 
} 
catch (Exception e) 
{ } 
} 

XmlTextWriter类：表示提供快速、非缓存、只进方法的编写器，该方法生成包含 XML 数据的流或文件。
WriteStartDocument()方法：编写XML的声明。
WriteEndDocument()方法：关闭任何打开的元素或属性并将编写器重新设置为 Start 状态。
WriteStartElement(string localName)方法：创建一个节点的开始。
WriteAttributeString(string localName, string value)方法：给节点添加属性。
WriteValue(value)方法：给节点赋值。

3、其他代码

3.1 获取图书列表

复制代码代码如下:

 
/// summary> 
/// 获取图书列表 
/// /summary> 
/// returns>/returns> 
public ListBookInfo> GetBookList() 
{ 
ListBookInfo> bookList = new ListBookInfo>(); 
BookInfo book1 = new BookInfo() { 
BookId = 1, 
Category = "CHILDREN", 
Title = "Harry Potter", 
Author = "J K. Rowling", 
PublishDate = new DateTime(2005,08,15), 
Price = 29.99 
}; 
bookList.Add(book1); 
BookInfo book2 = new BookInfo() 
{ 
BookId = 2, 
Category = "WEB", 
Title = "Learning XML", 
Author = "Erik T. Ray", 
PublishDate = new DateTime(2003,10,18), 
Price = 39.95 
}; 
bookList.Add(book2); 
return bookList; 
} 

3.2 图书信息实体类

复制代码代码如下:

 
/// summary> 
/// 图书信息实体类 
/// /summary> 
public class BookInfo 
{ 
public int BookId { set; get; } //图书ID 
public string Title { set; get; } //图书名称 
public string Category { set; get; } //图书分类 
public string Author { set; get; } //图书作者 
public DateTime PublishDate { set; get; } //出版时间 
public Double Price { set; get; } //销售价格 
} 

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