本文实例讲述了C#中JavaScriptSerializer帮助类用法。分享给大家供大家参考。具体如下：
关键代码如下：
复制代码 代码如下:using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Web.Script.Serialization;
namespace YanZhiwei.DotNet3._5.Utilities.Common
{
/// <summary>
/// JavaScriptSerializer 帮助类
/// </summary>
public static class ScriptSerializerHelper
{
#region 处理Json字符串的时间格式问题
/// <summary>
/// 处理JsonString的时间格式问题
/// <para>eg:ScriptSerializerHelper.ParseJsonTime(@"[{'getTime':'/Date(1419564257428)/'}]", "yyyyMMdd hh:mm:ss");==>[{'getTime':'20141226 11:24:17'}]</para>
/// <para>参考：http://www.cnphp6.com/archives/35773 </para>
/// </summary>
/// <param name="jsonString">Json字符串</param>
/// <param name="formart">时间格式化类型</param>
/// <returns>处理好的Json字符串</returns>
public static string ParseJsonTime(this string jsonString, string formart)
{
if (!string.IsNullOrEmpty(jsonString))
{
jsonString = Regex.Replace(jsonString, @"/Date((d+))/", match =>
{
DateTime _dateTime = new DateTime(1970, 1, 1);
_dateTime = _dateTime.AddMilliseconds(long.Parse(match.Groups[1].Value));
_dateTime = _dateTime.ToLocalTime();
return _dateTime.ToString(formart);
});
}
return jsonString;
}
/// <summary>
/// 处理JsonString的时间格式问题【时间格式：yyyy-MM-dd HH:mm:ss】
/// <para>参考：http://www.cnphp6.com/archives/35773 </para>
/// </summary>
/// <param name="jsonString">Json字符串</param>
/// <returns>处理好的Json字符串</returns>
public static string ParseJsonTime(this string jsonString)
{
return ParseJsonTime(jsonString, "yyyy-MM-dd HH:mm:ss");
}
#endregion
#region 利用JavaScriptSerializer将对象序列化成JSON
/// <summary>
/// 利用JavaScriptSerializer将对象序列化成JSON字符串
/// <para>eg:ScriptSerializerHelper.Serialize<Person>(_personList);</para>
/// </summary>
/// <typeparam name="T">泛型</typeparam>
/// <param name="entityList">对象集合</param>
/// <returns>json</returns>
public static string Serialize<T>(this IEnumerable<T> entityList) where T : class
{
string _jsonString = string.Empty;
if (entityList != null)
{
JavaScriptSerializer _serializerHelper = new JavaScriptSerializer();
_serializerHelper.MaxJsonLength = int.MaxValue;
_jsonString = _serializerHelper.Serialize(entityList);
}
return _jsonString;
}
#endregion
#region 利用JavaScriptSerializer将json字符串反序列化
/// <summary>
///利用JavaScriptSerializer将json字符串反序列化
/// <para>eg:List<Person> _result = (List<Person>)ScriptSerializerHelper.Deserialize<Person>(_jsonString);</para>
/// </summary>
/// <typeparam name="T">泛型</typeparam>
/// <param name="jsonString"></param>
/// <returns>IEnumerable</returns>
public static IEnumerable<T> Deserialize<T>(this string jsonString) where T : class
{
IEnumerable<T> _list = null;
if (!string.IsNullOrEmpty(jsonString))
{
JavaScriptSerializer _serializerHelper = new JavaScriptSerializer();
_list = _serializerHelper.Deserialize<IEnumerable<T>>(jsonString);
}
return _list;
}
#endregion
}
}
测试代码如下：
复制代码 代码如下:using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using YanZhiwei.DotNet3._5.UtilitiesTests.Model;
namespace YanZhiwei.DotNet3._5.Utilities.Common.Tests
{
[TestClass()]
public class ScriptSerializerHelperTests
{
[TestMethod()]
public void SerializeTest()
{
Person _personA = new Person() { Name = "YanZhiweiA", Age = 10, Address = "shanghaiA" };
Person _personB = new Person() { Name = "YanZhiweiB", Age = 11, Address = "shanghaiB" };
IList<Person> _personList = new List<Person>();
_personList.Add(_personA);
_personList.Add(_personB);
string _actual = ScriptSerializerHelper.Serialize<Person>(_personList);
string _expect = "[{"Name":"YanZhiweiA","Age":10,"Address":"shanghaiA"},{"Name":"YanZhiweiB","Age":11,"Address":"shanghaiB"}]";
Assert.AreEqual<string>(_expect, _actual);
}
[TestMethod()]
public void DeserializeTest()
{
Person _personA = new Person() { Name = "YanZhiweiA", Age = 10, Address = "shanghaiA" };
Person _personB = new Person() { Name = "YanZhiweiB", Age = 11, Address = "shanghaiB" };
List<Person> _expected = new List<Person>();
_expected.Add(_personA);
_expected.Add(_personB);
string _jsonString = "[{'Name':'YanZhiweiA','Age':10,'Address':'shanghaiA'},{'Name':'YanZhiweiB','Age':11,'Address':'shanghaiB'}]";
List<Person> _result = (List<Person>)ScriptSerializerHelper.Deserialize<Person>(_jsonString);
bool _actual = _expected.SequenceEqual(_result, new PersonCompare());
Assert.IsTrue(_actual);
}
[TestMethod()]
public void ParseJsonTimeTest()
{
string _actual = ScriptSerializerHelper.ParseJsonTime(@"[{'getTime':'/Date(1419564257428)/'}]", "yyyyMMdd hh:mm:ss");
Assert.AreEqual("[{'getTime':'20141226 11:24:17'}]", _actual);
}
}
public class PersonCompare : IEqualityComparer<Person>
{
public bool Equals(Person x, Person y)
{
return (x.Age == y.Age) && (x.Address == y.Address) && (x.Name == y.Name);
}
public int GetHashCode(Person obj)
{
return obj.Name.GetHashCode();
}
}
}
测试结果如下图所示：
希望本文所述对大家的C#程序设计有所帮助。