Add java http filter (currently not working)

dmnverifierfrontend/src/main/java/de/unikoblenz/fgbks/dmn/frontend/HttpFilter.java

+package de.unikoblenz.fgbks.dmn.frontend;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.ws.rs.container.ContainerRequestContext;
+import javax.ws.rs.container.ContainerRequestFilter;
+import javax.ws.rs.core.Context;
+import javax.ws.rs.core.UriInfo;
+import javax.ws.rs.ext.Provider;
+
+@Provider
+public class HttpFilter implements ContainerRequestFilter {
+
+  @Context
+  UriInfo info;
+  @Context
+  HttpServletRequest request;
+
+  @Override
+  public void filter(ContainerRequestContext context) {
+    final String method = context.getMethod();
+    final String path = info.getPath();
+    final String address = request.getRemoteAddr();
+    System.out.format("Request %s %s from IP %s %n + x", method, path, address);
+  }
+}