Detect invalidly mapped service names earlier, before the request body

is parsed.

@@ -130,21 +130,34 @@ public class DirectControlServlet extends HttpServlet {
             }
             pathInfo = pathInfo.substring(1).replaceAll(":", ".");
 
-            // Determine type of request and load the context from JSON content or
-            // parameter values accordingly
-            if (contentType != null) {
-                int semi = contentType.indexOf(";");
-                if (semi != -1) {
-                    contentType = contentType.substring(0, semi);
+            // Determine the request method for service lookup and parameter filters
+            String method = request.getParameter("_method");
+            String httpMethod = request.getMethod();
+            if (method == null) {
+                method = request.getMethod();
             }
+            if (method == null) {
+                method = "GET";
             }
 
-            // Determine the request method for service lookup and parameter filters
-            String method = "";
-            method = request.getParameter("_method");
-            String httpMethod = request.getMethod();
-            if (method == null && httpMethod != null) method = httpMethod;
-            if (method == null) method = "GET";
+            // If there is a mapping for this pathInfo, run the corresponding service
+            // otherwise, return an error
+            String serviceName = serviceURLMappings.get(pathInfo + "#" + method);
+            if (serviceName == null) {
+                serviceName = serviceURLMappings.get(pathInfo);
+                if (serviceName == null) {
+                    response.setStatus(404);
+
+                    Debug.logInfo("No mapping found for " + pathInfo + "#" + method, module);
+
+                    PrintWriter writer = response.getWriter();
+                    writer.println("No mapping found for URL \"" + pathInfo + "\"");
+                    writer.flush();
+                    writer.close();
+                    return;
+                }
+            }
+            Debug.logInfo("Service name " + serviceName, module);
 
             // Load context
             Map<String, Object> context = new HashMap<String, Object>();
@@ -157,6 +170,15 @@ public class DirectControlServlet extends HttpServlet {
             }
             context.remove("_method");
 
+            // Determine type of request and load the context from JSON content or
+            // parameter values accordingly
+            if (contentType != null) {
+                int semi = contentType.indexOf(";");
+                if (semi != -1) {
+                    contentType = contentType.substring(0, semi);
+                }
+            }
+
             if ("application/json".equals(contentType)) {
                 // Read request body as JSON and insert into the context
                 Map<String, Object> items = UtilGenerics.cast(JSON.from(UtilIO.readString(request.getReader())).toObject(Map.class));
@@ -211,25 +233,6 @@ public class DirectControlServlet extends HttpServlet {
             Delegator delegator = getDelegator(request.getServletContext());
             LocalDispatcher dispatcher = getDispatcher(request.getServletContext());
 
-            // If there is a mapping for this pathInfo, run the corresponding service
-            // otherwise, return an error
-            String serviceName = serviceURLMappings.get(pathInfo + "#" + method);
-            Debug.logInfo("Service name " + serviceName, module);
-            if (serviceName == null) {
-                serviceName = serviceURLMappings.get(pathInfo);
-                if (serviceName == null) {
-                    response.setStatus(404);
-
-                    Debug.logInfo("No mapping found for " + pathInfo + "#" + method, module);
-
-                    PrintWriter writer = response.getWriter();
-                    writer.println("No mapping found for URL \"" + pathInfo + "\"");
-                    writer.flush();
-                    writer.close();
-                    return;
-                }
-            }
-
             // Check if there is an output handler
             String outputHandler = "JSON";
             if (serviceName.indexOf("|") != -1) {