getUrlJsonObject({
  href:pathcamp+'sql/getFileNamesDocs.jsp',
  method:"GET",
},
function(data){
  console.log(data);
});

<%@page import="java.io.*"%>
<%
    File folder = new File("docs/");
    File[] listOfFiles = folder.listFiles();
    String [] listOfNames = new String[listOfFiles.length];
    for (int i = 0; i < listOfFiles.length; i++) {
        if (listOfFiles[i].isFile()) {
            listOfNames[i] = listOfFiles[i].getName();
            out.println(listOfNames[i]);
        }
    }
%>