最好是重用通過創建讀取器來解析結果,而不是直接使用字符串消息進行反序列化,因爲字符串不會被再次解析在deserilization期間。
如果我們用一個快速和骯髒的演示程序:
using System;
using System.Text;
using System.Xml.Serialization;
using System.IO;
using System.Xml.Linq;
using System.Diagnostics;
namespace Sample_04_03_2014_01
{
public class Sample
{
public string Name { get; set; }
}
class Program
{
static void Main(string[] args)
{
Sample s = new Sample();
s.Name = "Hello";
var serializer = new XmlSerializer(typeof(Sample));
var sb = new StringBuilder();
using (var sw = new StringWriter(sb))
{
serializer.Serialize(sw, s);
}
string serialized = sb.ToString();
Console.WriteLine(serialized);
var root = XDocument.Parse(serialized).Root;
Sample someType1 = null;
Stopwatch stopWatch1 = new Stopwatch();
stopWatch1.Start();
for (int i = 0; i < 100000; i++)
{
var serializer1 = new XmlSerializer(typeof(Sample));
using (var reader = root.CreateReader())
{
someType1 = (Sample)serializer1.Deserialize(reader);
}
}
stopWatch1.Stop();
Console.WriteLine(someType1.Name);
Console.WriteLine(stopWatch1.Elapsed);
Sample someType2 = null;
Stopwatch stopWatch2 = new Stopwatch();
stopWatch2.Start();
for (int i = 0; i < 100000; i++)
{
var serializer2 = new XmlSerializer(typeof(Sample));
using (TextReader reader = new StringReader(serialized))
{
someType2 = (Sample)serializer2.Deserialize(reader);
}
}
stopWatch2.Stop();
Console.WriteLine(someType2.Name);
Console.WriteLine(stopWatch2.Elapsed);
}
}
}
然後我們得到〜對於第一種方法(CreateReader)30%的性能增益。
你好00:00:00.8825465你好00:00:01.2636450
只有這樣,才能回答正確的是火候。 –