To represent an array of Employees and Contractors. Open the CSV file using a BufferedReaderin a try-with-resources block. So here we need to create a POJO class that can contain all details of an employee.
We are going to parse the CSV data and create the POJO (Plain-Old-Java-Object) shown in this definition. Also mind that your POJO fields are lowercase and so have to be your JSON keys. Let’s first add the following dependencies to the pom. Before getting started, lets define the required Jackson API dependencies. When the CSV file to be parsed is simple that there are no quoted fields or commas embedded in fields, you can use a simple pattern matcher to split the CSV fields. Watch out for the list directly in 'Assessments'. In this article, we use Jackson library class ObjectMapper which provides the functionality for reading and writing JSON, either to or from basic POJOs. writing plain JSON, you may want to configure Jacksons ObjectMapper with your.
In this method, we use the Java Collection classes to store the parsed data and convert those to JSON. text/uri-list: URIs pointing to the resource to bind to the association. Whilst the other answers show alternative ways of achieving the same result, the actual answer to this question is that I had defined a separate class that extended WebMvcConfigurationSupport.By doing that the WebMvcAutoConfiguration bean had been disabled and so the Primary ObjectMapper was not picked up by Spring. The second method uses a more complete CSV parser with support for quoted fields and commas embedded within fields. The first method defines a POJO and uses simple string splitting to convert CSV data to POJO, which in turn is serialized to JSON. If you're using Maven, it's as easy as adding the dependency: compile group: '', name: 'jackson-databind', version: '2.11.2'. Since we're using Jackson, you'll have to add it to your project. In this article, we present a couple of methods to parse CSV data and convert it to JSON. Jackson provide writeValue() and readValue() methods to convert Java objects to / from JSON. Either you can use readTree in ObjectMapper, which returns a JsonNode. In this article, we'll convert a JSON array into a Java Array and Java List using Jackson.