我正在创建一个返回XML的ASHX,但是当我这样做时它需要一个路径
XmlWriter writer = XmlWriter.Create(returnXML, settings)
但是returnXML现在只是一个空字符串(猜测不起作用),但是我需要将XML写入我可以作为响应文本发送的内容。我尝试了XmlDocument,但它给了我一个错误,期待一个字符串。我在这里缺少什么?
答案 0 :(得分:43)
如果您真的想写入内存,请传递StringWriter
或StringBuilder
,如下所示:
using System;
using System.Text;
using System.Xml;
public class Test
{
static void Main()
{
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
StringBuilder builder = new StringBuilder();
using (XmlWriter writer = XmlWriter.Create(builder, settings))
{
writer.WriteStartDocument();
writer.WriteStartElement("root");
writer.WriteStartElement("element");
writer.WriteString("content");
writer.WriteEndElement();
writer.WriteEndElement();
writer.WriteEndDocument();
}
Console.WriteLine(builder);
}
}
但是,如果您想直接将其写入回复,则可以传入HttpResponse.Output
,而不是TextWriter
:
using (XmlWriter writer = XmlWriter.Create(Response.Output, settings))
{
// Write into it here
}
答案 1 :(得分:6)
我身边缺少一些东西:刷新XmlWriter的缓冲区:
static void Main()
{
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
StringBuilder builder = new StringBuilder();
using (XmlWriter writer = XmlWriter.Create(builder, settings))
{
writer.WriteStartDocument();
writer.WriteStartElement("root");
writer.WriteStartElement("element");
writer.WriteString("content");
writer.WriteEndElement();
writer.WriteEndElement();
writer.WriteEndDocument();
writer.Flush();
}
Console.WriteLine(builder);
}
答案 2 :(得分:3)
StringBuilder xml = new StringBuilder();
TextWriter textWriter = new StringWriter(xml);
XmlWriter xmlWriter = new XmlTextWriter(textWriter);
然后,使用xmlWriter完成所有xml编写,并将其直接写入StringBuilder。
编辑:感谢Jon Skeet的评论:
StringBuilder xml = new StringBuilder();
XmlWriter xmlWriter = XmlWriter.Create(xml);
答案 3 :(得分:2)
最好的方法是直接写入响应输出流。它是一个内置于ASP.NET的流,允许您将任何输出写为流,在这种情况下,您可以将XML写入其中。