Parse JSON object in SAS macro

Question

Here is the input JSON file. It have to parse in SAS dataset.

\"results\":
[
 {
    \"acct_nbr\": 1234,
    \"firstName\": \"John\",
    \"lastName\": \"Smit         


        

Answer 1

You can use proc groovy to parse JSON pretty easily (assuming you know Groovy). This SAS blog on authenticating to Twitter shows a detailed example of how to do it; here is some of the highlights.

This assumes you have the Groovy JAR files (http://groovy.codehaus.org/Download) and a way to output the files (the example uses OpenCSV).

The below is my attempt at it; I don't think it quite works, but I don't know Groovy, either. The general concept should be correct. If you want to try this approach, but can't figure out the specifics of this, you might either retag your question groovy or ask a new question with that tag.

%let groovydir=C:\Program Files\SASHome_9.4\SASFoundation\9.4\groovy; *the location the groovy JARs are located at;

%let sourcefile=c:\temp\json.txt;
%let outfile=c:\temp\json.csv;

proc groovy classpath="&groovydir.\groovy-all-2.2.0.jar;&groovydir.\opencsv-2.3.jar"; 

   submit "&sourcefile" "&outfile"; 
      import groovy.json.*
      import au.com.bytecode.opencsv.CSVWriter

      def input = new File(args[0]).text
      def output = new JsonSlurper().parseText(input)
      def csvoutput = new FileWriter(args[1])

      CSVWriter writer = new CSVWriter(csvoutput);

      String[] header = new String[8];
      header[0] = "results.acct_nbr";
      header[1] = "results.firstName";
      header[2] = "results.lastName";
      header[3] = "results.age";
      header[4] = "results.address.streetAddress";
      header[5] = "results.address.city";
      header[6] = "results.address.state";
      header[7] = "results.address.postalCode";
      writer.writeNext(header);

      output.statuses.each {
         String[] content = new String[8];
         content[0] = it.results.acct_nbr.toString();
         content[1] = it.results.firstName.toString();
         content[2] = it.results.lastName.toString();
         content[3] = it.results.age.toString();
         content[4] = it.results.address.streetAddress.toString();
         content[5] = it.results.address.city.toString();
         content[6] = it.results.address.state.toString();
         content[7] = it.results.address.postalCode.toString(); 
         writer.writeNext(content)
      }         

      writer.close();

    endsubmit; 
 quit;