Issue #4170: Refactor use of pathInfo/contentType/getPathInfo()/getContentType().

@@ -97,11 +97,12 @@ public class DirectControlServlet extends HttpServlet {
     }
 
     public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        String pathInfo = request.getPathInfo();
+        String contentType = request.getContentType();
         try {
-            Debug.logInfo("getPathInfo: " + request.getPathInfo() + 
-                    " request.getContentType: " + request.getContentType(), module);
+            Debug.logInfo("getPathInfo: " + pathInfo +
+                    " request.getContentType: " + contentType, module);
 
-            String pathInfo = request.getPathInfo();
             if (pathInfo == null || pathInfo.length() == 0) {
                 return;
             }
@@ -109,7 +110,6 @@ public class DirectControlServlet extends HttpServlet {
 
             // Determine type of request and load the context from JSON content or
             // parameter values accordingly
-            String contentType = request.getContentType();
 
             // Determine the request method for service lookup and parameter filters
             String method = "";
@@ -129,8 +129,8 @@ public class DirectControlServlet extends HttpServlet {
                 }
             } else {
                 // Check if the request is a backbone style "emulateJSON" request
-                if (request.getContentType() != null && 
-			request.getContentType().indexOf("x-www-form-urlencoded") != -1 &&
+                if (contentType != null &&
+			contentType.indexOf("x-www-form-urlencoded") != -1 &&
 			request.getParameter("model") != null) {
                     Debug.logInfo("MODEL: " + request.getParameter("model"), module);
                     JSON json = new JSON(new StringReader(request.getParameter("model")));