csvutil | csvutil provides fast and idiomatic mapping | CSV Processing library
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QUESTION
I was working on a project where we use OpenCSV to read in CSV files and fill up a database with them at start. I noticed that there is a strange thing, that in certain cases a given identifier value can not be queried. During debugging I found that OpenCSV does not read up the CSV correctly.
Let's say that I have the following CSV file:
...ANSWER
Answered 2021-Oct-28 at 13:19This is not an OpenCSV specific problem, but rather that FileReader
reads in the BOM in the UTF encoded file. This is kind of unexpected, but it makes sense, as there is no context for FileReader
that it should excludes those bytes.
The solution would be to either manually remove it, or - in my case - use a library to make sure it is excluded. I wrote the following utility class:
QUESTION
I'm currently trying to write and integration flow then reads a csv file and processes it in chunks (Calls API for enrichment) then writes in back out as a new csv. I currently have an example working perfectly except that it is polling a directory. What I would like to do is be able to pass the file-path and file-name to the integration flow in the headers and then just perform the operation on that one file.
Here is my code for the polling example that works great except for the polling.
...ANSWER
Answered 2021-Oct-19 at 19:38If you know the file, then there is no reason in any special component from the framework. You just start your flow from a channel and send a message to it with File
object as a payload. That message is going to be carried on to the slitter in your flow and everything is going to work OK.
If you really want to have a high-level API on the matter, you can expose a @MessagingGateway
as a beginning of that flow and end-user is going to call your gateway method with desired file as an argument. The framework will create a message on your behalf and send it to the message channel in the flow for processing.
See more info in docs about gateways:
And also a DSL definition starting from some explicit channel:
https://docs.spring.io/spring-integration/docs/current/reference/html/dsl.html#java-dsl-channels
QUESTION
I'm trying to configure my .yml but I get a null pointer exception always...
I have the following .yml:
...ANSWER
Answered 2021-Sep-20 at 07:26I assume you have a setup of your project like:
QUESTION
With the latest releases of Spring Boot 2.3.0
, spring-graalvm-native 0.7.0.BUILD-SNAPSHOT
, GraalVM 20.1.0.r11
and the corresponding blog posts
- https://spring.io/blog/2020/04/16/spring-tips-the-graalvm-native-image-builder-feature
- https://blog.codecentric.de/en/2020/05/spring-boot-graalvm
I also started to play around with one of my apps.
Luckily I was able to compile my app without any big hurdles. My compile.sh
script looks as follows
ANSWER
Answered 2020-May-22 at 12:00Looks like adding following argument helps
-H:IncludeResources='.*/*.csv$'
QUESTION
I have a solution with a "Common" project. This "Common" project is used by other projects in the solution.
Within this "Common" project, I have a "Utilities" folder with several different utility classes, for example, "CsvUtilities.cs" and "JsonUtilities.cs". Assume that I could have many classes like this, and that all methods in these classes are pure functions. Based on this, it would make sense for these classes and methods to be static. Then from other projects I can import the common project and do things like:
...ANSWER
Answered 2020-Feb-26 at 21:46You can have Utilities.Json.StaticJsonMethod();
if you nest static class Json
inside Utilities
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