This Stackoverflow answer showed me how to do it. If you refer back to their migration guide, you’ll see that they give some advice for workarounds, etc.įurthermore, you can always just outright skip and go back to Newtonsoft JSON.Net really easily. What do I mean by this? Well, simply that the whole freaking framework is extensible. NET Core in a whole new light compared to the olden days. Luckily, and to their credit, Microsoft is looking at things in. As Christian puts it, “The fact that JSON is treated as case insensitive has literally slowed the internet down.” What can I do? It is important to point out that the change to case-sensitivity is a performance boon. Similarly, Christian alludes to speed during his owns tests while writing Rest Client in RestClient.Net. NET Core Tutorials, posts What Those Benchmarks Of Don’t Mention. Furthermore, you might find the benchmarks involved with case sensitivity interesting. Luckily you can easily change it to use case-insensitive matching via JsonSerializerOptions. I also never even noticed it buried in the documentation. Newtonsoft is case-insensitive by default. It turns out that defaults to case sensitive deserialization. Case-SensitivityĬhristian Findlay, author of RestClient.Net, pointed out another breaking change I had missed. Regardless, I now have a story on my Jira board to add some more integration tests to handle different JSON serialization formats for this particular API. In my defense this migration guide appears with publication date and we had actually upgraded to. I found that MSDN actually has a table of differences in their migration guide. Running into that issue led me to investigate further.
#Json compare newtonsoft code
Here is just a small sample of code to highlight the problem: // model in C# This was our exact issue API #2 was sending us a property as a long but our side had the field as a string (which is another story for another day).
Similarly, if you pass a string that could otherwise be converted to an int or long, Newtonsoft would do so but does not. That had to be it.ĭigging deeper I learned that one of the differences between Newtonsoft Json.NET and was that Newtonsoft could deserialize a long or int to a string property whereas would skip the field. NET Core 3 had changed the JSON serialization engine. While talking I realized that what had changed, however, was the. Turns out they were validation “errors”, not actual errors, but I digress.Īs I investigated the issue with a developer from the other team we both determined that our code for the API method in question had not changed since initial deployment. A week after it went to production we found out that a different API which called this one was having thousands of errors. NET Core 3.1 along with some other very minor changes and released it to production. NET Core API web application we originally started with. Of course the second time was what prompted this blog post in the first place. The first time was something to do with WCF and configuration settings between the original. That doesn’t mean there haven’t been more, just that I’ve only actually ran into them twice. You mentioned breaking changes?Īs I alluded to in my introduction I’ve only personally ran into breaking changes on the. Grab some popcorn, read the article, and then read the comments. Rather than talk about their points–either in favor or opposition–I’m simply presenting them with the link and I’ll let you decide on your own how you feel about it. To provide an ASP.NET Core integration package for Json.NET.To remove the Json.NET dependency from ASP.NET Core.It is easy to know which packages belong simply due to version parity with all the stuff 3.x+.Īccording to this blog post by Immo Landwerth, Microsoft’s primary reasons to build a new JSON library are: That, of course, isn’t the only reason but it’s still a pretty good one. NET 5 and unification of the platform, they are standardizing on versioning. This means that it has it’s own developers, it’s own release cycle, and, more importantly, it’s own versioning scheme. While Newtonsoft Json.NET is great, Microsoft doesn’t control it. Microsoft has been packaging Newtonsoft Json.NET alongside. That said, you will still want to be aware of the limitations and changes in. NET Core 3.x you may not run into breaking changes. If you are starting an application fresh with. NET Core 3.x, however, Microsoft switched to their implementation in. NET Core 3.x, Newtonsoft is the default JSON engine. NET Core and how it handles JSON serialization (and deserialization). NET Core 3.x, you’ll want to be aware of some changes in the defaults. Once with WCF configuration in my app.config, and recently with the JSON serialization (or deserialization, as it were). In that time I have only experienced a breaking change twice. NET 1.0 right after it’s initial release. I started my programming journey learning C# on.
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