C#中JavaScriptSerializer帮助类用法实例

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：

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：

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。