反序列化包含日期的 JSON 字符串
本文关键字：JSON 字符串 日期 包含 反序列化 | 更新日期: 2023-09-27 18:33:23
我一直在看一些关于如何在 json 字符串中反序列化日期的文章。
这些帖子提到对字符串进行替换以重新格式化日期部分。
JSON 字符串如下所示：
"/Date(1336258800000)/'"
显然我需要得到的是这个：
"new Date(1336258800000)"
问题是一旦我尝试替换或索引 '）/''' 它就找不到要替换的字符串（indexOf 是 -1）
谁能看到我做错了什么？
JavaScriptSerializer jss = new JavaScriptSerializer();
//Fix an issue with Json Dates
string json = eventArgument.Replace( @"/Date(", "new Date(" ).Replace( @")/'", ")" );
int index = json.IndexOf( @")/'", 0 );
WorkPattern wp = jss.DeserializeObject( json ) as WorkPattern;
下面是完整的 JSON 字符串：
"{'"WorkPatternDays'":[{'"WorkPatternDayShifts'":[{'"WorkPatternDayShiftRates'":[{'"Duration'":8.5,'"Sequence'":0,'"WorkPatternDayShiftID'":186,'"WorkPatternDayShiftRateID'":105,'"Deleted'":false,'"UpdatedUser'":'"'",'"UpdatedDate'":'"/Date(1336258800000)/'"}],'"WorkPatternDayShiftBreaks'":[{'"PaidBreak'":true,'"Duration'":1,'"EndTime'":'"/Date(1336050000000)/'",'"StartTime'":'"/Date(1336046400000)/'",'"WorkPatternDayShiftID'":186,'"WorkPatternDayShiftBreakID'":284,'"Deleted'":false,'"UpdatedUser'":'"'",'"UpdatedDate'":'"/Date(1336258800000)/'"},{'"PaidBreak'":false,'"Duration'":0.25,'"EndTime'":'"/Date(1336058100000)/'",'"StartTime'":'"/Date(1336057200000)/'",'"WorkPatternDayShiftID'":186,'"WorkPatternDayShiftBreakID'":285,'"Deleted'":false,'"UpdatedUser'":'"'",'"UpdatedDate'":'"/Date(1336258800000)/'"}],'"Duration'":8.5,'"EndTime'":'"/Date(1336062600000)/'",'"StartTime'":'"/Date(1336032000000)/'",'"WorkPatternDayID'":186,'"WorkPatternDayShiftID'":186,'"Deleted'":false,'"UpdatedUser'":'"'",'"UpdatedDate'":'"/Date(1336258800000)/'"}],'"DayOfWeek'":1,'"DayOfWeekNumber'":1,'"WorkPatternID'":105,'"WorkPatternDayID'":186,'"Deleted'":false,'"UpdatedUser'":'"'",'"UpdatedDate'":'"/Date(1336258800000)/'"},{'"WorkPatternDayShifts'":[{'"WorkPatternDayShiftRates'":[],'"WorkPatternDayShiftBreaks'":[{'"PaidBreak'":true,'"Duration'":0.5,'"EndTime'":'"/Date(1336041000000)/'",'"StartTime'":'"/Date(1336039200000)/'",'"WorkPatternDayShiftID'":187,'"WorkPatternDayShiftBreakID'":286,'"Deleted'":false,'"UpdatedUser'":'"'",'"UpdatedDate'":'"/Date(1336258800000)/'"}],'"Duration'":5.5,'"EndTime'":'"/Date(1336046400000)/'",'"StartTime'":'"/Date(1336026600000)/'",'"WorkPatternDayID'":187,'"WorkPatternDayShiftID'":187,'"Deleted'":false,'"UpdatedUser'":'"'",'"UpdatedDate'":'"/Date(1336258800000)/'"}],'"DayOfWeek'":3,'"DayOfWeekNumber'":3,'"WorkPatternID'":105,'"WorkPatternDayID'":187,'"Deleted'":false,'"UpdatedUser'":'"'",'"UpdatedDate'":'"/Date(1336258800000)/'"}],'"WorkPatternName'":'"Naths Test Work Pattern'",'"WorkPatternID'":105,'"Deleted'":false,'"UpdatedUser'":'"'",'"UpdatedDate'":'"/Date(1336258800000)/'"}"
更多信息以了解它们如何组合在一起：
代码隐藏：
public override void DataBind()
{
try
{
if ( this.WorkPattern != null )
{
//Create a javascript serializer
JavaScriptSerializer jss = new JavaScriptSerializer();
//Get the serialised object as a json string
string json = jss.Serialize( this.WorkPattern );
//Run the jquery code
base.RunjQueryCode(
String.Format( "loadWorkPattern({0});", json ) );
jss = null;
}
}
catch ( Exception )
{
throw;
}
}
protected override void HandlePostbacks( string eventTarget, string eventArgument )
{
try
{
switch ( eventTarget )
{
case "Save":
JavaScriptSerializer jss = new JavaScriptSerializer();
//Fix an issue with Json Dates
string json = eventArgument.Replace( @"/Date(", "new Date(" ).Replace( @")/'", ")" );
int index = json.IndexOf( @")/''", 0 );
WorkPattern wp = jss.DeserializeObject( json ) as WorkPattern;
object o = jss.Deserialize<WorkPattern>( json );
break;
default: break;
}
base.HandlePostbacks( eventTarget, eventArgument );
}
catch ( Exception )
{
throw;
}
}
标记/js：
function loadWorkPattern(jsonData) {
//Store the work pattern
_workPattern = jsonData;
//Loop through the work pattern days
$.each(_workPattern.WorkPatternDays, function (key, workPatternDay) {
//Loop through each shift
$.each(workPatternDay.WorkPatternDayShifts, function (key, workPatternShift) {
addShift(workPatternShift, workPatternDay.DayOfWeekNumber);
//Loop through each break
$.each(workPatternShift.WorkPatternDayShiftBreaks, function (key, workPatternDayShiftBreak) {
addBreak(workPatternDayShiftBreak);
});
});
});
}
function saveWorkPattern() {
__doPostBack('Save', JSON.stringify(_workPattern));
}
我调用 JSON.stringify 在发送回服务器之前序列化序列化存储的对象，这是我做错了吗？
更新
这是工作代码：
string json = eventArgument.Replace( @"/Date(", "''/Date(" ).Replace( @")/", ")''/" );
尝试int index = json.IndexOf( @")/''", 0 ); - 在斜杠前再加一个斜杠
更新
JavaScriptSerializer s = new JavaScriptSerializer();
string date = s.Serialize(DateTime.Now);
int index = date.IndexOf(@")'/", 0);
Console.WriteLine(index); // index = 21
更新 - 解决方案
问题是初始字符串是/Date(1336258800000)/的，但不是/Date(1336258800000)/'，因为最后一个斜杠是 JSON 中"字符的转义。并且去西亚化的格式应该是dirrerent，所以工作解决方案是
string json = eventArgument.Replace( @"/Date(", "''/Date(" ).Replace( @")/", ")''/" );
我使用了正则表达式，希望这不是问题。正则表达式检测/Date(NUMBER)/'并将 NUMBER 作为正则表达式匹配中的一个组获取，因此我使用它来替换 dateTimeJson 中与其构造函数中指定的正则表达式匹配的所有内容与新的 Date（NUMBER） 匹配的内容。
//the source JSON
string dateTimeJson = "/Date(1336258800000)/''";
string result = "";
//you might want to do a quick IndexOf("Date") to make sure that there is a date
//so you won't trouble yourselve with regex computation unnecessarily. performance?
//find Date(NUMBER) matches and get the NUMBER then use it again with new Date in the
//call to replace
System.Text.RegularExpressions.MatchCollection matches = null;
System.Text.RegularExpressions.Regex regex = null;
try
{
//at the end is one forwared slash for regex escaping ' and another is the ' that is escaped
regex = new System.Text.RegularExpressions.Regex(@"/Date'(([0-9]*)')/''");
matches = regex.Matches(dateTimeJson);
string dateNumber = matches[0].Groups[1].Value;
result = regex.Replace(dateTimeJson, "new Date(" + dateNumber + ")");
}
catch (Exception iii)
{
//MessageBox.Show(iii.ToString());
}
MessageBox.Show(result);