Re: UseRecurringJob("recurringjob.json") Newtonsoft.Json.JsonSerializationException

Hello,

We are using your excellent hangfire extension.However, we are stuck at trying to get the recurringjob.json method of recurring jobs. we get the following error:

Newtonsoft.json.JsonSerializationException 'Error converting value to type 'System.Type.Path' [0].job-type, line 5, position 69'

Inner exception
ArgumentException: Could not cast or convert from System.String to System.Type.

it would be awesome if we could get some help with this :)

Thanks

[claudiobottari]

Did you find out? I'm getting the same error....

No I didn't..was hoping for a response

[icsharp]

@ChristopherTodd
u can paste your json file content here，it will helpe me to check the error.

[claudiobottari]

Since it was urgent to me to fix this... I changed the receiving object definition for the property that gave me this error (from System.Type to string) to avoid this exception. It's a workaround that you may use as well...

[icsharp]

@claudiobottari
Got it!

Hi @icsharp thanks for getting in touch!

we are using:
"HangFire" Version: 1.6.17
"Microsoft.AspNetCore" Version= 2.0.1

please see a pic of the error we have recreated and please find the json below:

[
{
"job-name": "My Job1",
"job-type": "Hangfire.Samples.MyJob1, Hangfire.Samples",
"cron-expression": "*/1 * * * ",
"timezone": "China Standard Time",
},
{
"job-name": "My Job2",
"job-type": "Hangfire.Samples.MyJob2, Hangfire.Samples",
"cron-expression": "/5 * * * ",
"job-data": {
"IntVal": 1,
"StringVal": "abcdef",
"BooleanVal": true,
"SimpleObject": {
"Name": "Foo",
"Age": 100
}
}
},
{
"job-name": "Long Running Job",
"job-type": "Hangfire.Samples.LongRunningJob, Hangfire.Samples",
"cron-expression": "/2 * * * *",
"job-data": {
"RunningTimes": 300
}
}
]

[icsharp]

@ChristopherTodd
see unit test I added ,it passed. Maybe you can serialize RecurringJobJsonOptions instance and get the job-type string as @claudiobottari said .

[russosalv]

@claudiobottari can you explain how you did perform it?

[claudiobottari]

Hi there and sorry for the late reply. Since there's clearly an issues on deserializing certain types, I worked around this limitation updating the property which raised the exception to be a simple string... that was enough to make the serialization/deserialization work. At that point I converted by myself the string to the required type. Is is clear?

[simplysiby]

Hi Guys.. I was getting this error while setting up a simple project.. The actual recurring job was a new project in the same solution.
The fix was simply to add the project as a reference in the parent project. (Right click the parent project references > Add reference > Select the recurringjob Project)
Hope this helps somebody !

[wangboshun]

I also encountered this problem. How to solve it? Is there a demo? thank you

[kevinmatspie]

If anyone else runs into this issue, here is what solved it for me: Use the AssemblyQualifiedName property to discover the full name of your class and use that in the job-type property. I added this bit of code in my startup before attempting to do anything with Hangfire:
string myTask = typeof(MyTask).AssemblyQualifiedName
I examined "myTask" in the debugger and that gave me a string that looked like: "MyTaskProject.Tasks.MyTask, MyTask, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"
That string satisfied the type conversion. I found that it still worked after removing the Version, Culture and PublicKeyToken attributes, so my final job-type value ended up being: "MyTaskProject.Tasks.MyTask, MyTask".

[MohammedSafi96]

@kevinmatspie you're SUUUUUUUPER HEROOOOOOOOOOOOOO,
I got stuck a lot of time thanks