5/4/2023 0 Comments Parse json to csvTo configure the JSON record reader as below, click on the → right arrow symbol. In the Same Way, we also created the CSVRecordSetWriter to convert the JSON data into CSV data write into the FlowFile.Īfter creating the JsonTreeReader, you will be in the below in the screen. When we click on the V symbol, we will get the drop-down with readers, select "JsonTreeReader," and click on the Create Nifi will create it. ![]() ![]() In the value of Record reader, when you click on it will give a drop-down as above click on create new Service and then you will dialog box as below click V symbol as shown below. We will create and configure RecordReader as below : While the reader expects each record to be well-formed JSON, the content of a FlowFile may consist of many records, each as a well-formed JSON array or JSON object with optional whitespace between them, such as the common 'JSON-per-line' format. JsonTreeReader: it Parses JSON into individual Record objects. Since we have the JSON, we need to create a JSON record reader we called as JsonTreeReader. ![]() To convert the JSON into CSV, we need to read that data. When we open the processor by double-clicking on it, as shown below. Step 2: Configure the Convert Record and Create Controller Services Here we are ingesting the json.txt file emp data from a local directory we configured Input Directory and provided the file name. Here we are getting the file from the local directory. NiFi will ignore files it doesn't have at least read permissions for. Step 2: Configure the Convert Record and Create Controller ServicesĬreates FlowFiles from files in a directory.Recipe Objective: How to read data in JSON format and parse it into CSV using NiFi controller services?.
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