Merge branch 'BF-8187' into 'master'

#8187: Rewrote the csv output to use a library, instead of doing it manually.

See merge request !2

@@ -81,6 +81,7 @@ import org.ofbiz.service.ServiceContainer;
 
 import org.apache.commons.csv.CSVFormat;
 import org.apache.commons.csv.CSVRecord;
+import org.apache.commons.csv.CSVPrinter;
 import org.apache.commons.fileupload.MultipartStream;
 import org.apache.commons.fileupload.ParameterParser;
 import org.apache.http.HeaderElement;
@@ -520,45 +521,28 @@ public class DirectControlServlet extends HttpServlet {
                 response.setContentType("text/csv");
 
                 // Find the first list
-                List<Map> resList = null;
+                List<Map<String, Object>> resList = null;
                 for (Object o : result.values()) {
                     if (o instanceof List) {
-                        resList = (List<Map>) o;
+                        resList = UtilGenerics.cast(o);
                         break;
                     }
                 }
 
-                if (resList != null) {
+                if (UtilValidate.isNotEmpty(resList)) {
                     PrintWriter writer = response.getWriter();
-                    List<Map> data = null;
-                    if (resList.get(1) instanceof List) {
-                        data = (List<Map>)(resList.get(1));
-                    } else {
-                        data = resList;
-                    }
-
-                    if (data.size() > 0) {
-                        Set keys = ((Map) data.get(0)).keySet();
-                        Iterator hi = keys.iterator();
-                        StringBuffer csvBuf = new StringBuffer();
-                        while(hi.hasNext()) {
-                            csvBuf.append(hi.next());
-                            if (hi.hasNext()) csvBuf.append(",");
-                        }
-                        writer.println(csvBuf);
-
-                        for (Map row : data) {
-                            Iterator i = keys.iterator();
-                            csvBuf = new StringBuffer();
-                            while(i.hasNext()) {
-                                Object val = row.get(i.next());
-                                if (!"null".equals("" + val)) csvBuf.append(val);
-                                if (i.hasNext()) csvBuf.append(",");
-                            }
-                            writer.println(csvBuf);
-                        }
-                    }
-
+                    Set<String> headerNameSet = resList.get(0).keySet();
+                    CSVFormat csvFormat = CSVFormat.EXCEL.withHeader(headerNameSet.toArray(new String[headerNameSet.size()]));
+                    CSVPrinter csvPrinter = new CSVPrinter(writer, csvFormat);
+                    for (Map<String, Object> csvLine: resList) {
+                        List<Object> csvData = new ArrayList<Object>(headerNameSet.size());
+                        for (String headerName: headerNameSet) {
+                            csvData.add(csvLine.get(headerName));
+                        }
+                        csvPrinter.printRecord(csvData.toArray(new Object[csvData.size()]));
+                    }
+                    csvPrinter.flush();
+                    csvPrinter.close();
                     writer.flush();
                     writer.close();
                 }