![]() ![]() View the JSON to CSV convertion in the Result box. Use the default comma separator or change it to tab or semicolon. Upload your JSON file or paste your JSON text into the textbox. Now, let's use Jackson's CsvMapper to read our CSV file into a List of OrderLine objects. JSON to CSV Converter transforms the structured content of a JSON file into a table representation. When we run this sample code, our example JSON document is converted to the expected CSV file. writeValue(new File("src/main/resources/orderLines.csv"), jsonTree) Then, we create a CsvMapper with our CsvSchema, and finally, we write the jsonTree to our CSV file: CsvMapper csvMapper = new CsvMapper() I have a folder of about a million JSON files and I wrote this to convert them quickly to CSV, but the formatting is not correct for the software Im. JsonNode firstObject = jsonTree.elements().next() įirstObject.fieldNames().forEachRemaining(fieldName -> ) ĬsvSchema csvSchema = csvSchemaBuilder.build().withHeader() To do this, we create a CsvSchema Builder and set the column headers to match the JSON field names: Builder csvSchemaBuilder = CsvSchema.builder() ![]() This determines the column headers, types, and sequence of columns in the CSV file. First, we use Jackson's ObjectMapper to read our example JSON document into a tree of JsonNode objects: JsonNode jsonTree = new ObjectMapper().readTree(new File("src/main/resources/orderLines.json")) ![]()
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