Added /robots.txt controller

src/main/java/org/genesys2/server/servlet/controller/RobotsTxtController.java

+/**
+ * Copyright 2014 Global Crop Diversity Trust
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+package org.genesys2.server.servlet.controller;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.commons.lang.StringUtils;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+/**
+ * 
+ * @author Matija Obreza, matija.obreza@croptrust.org
+ */
+@Controller
+@RequestMapping("/robots.txt")
+public class RobotsTxtController {
+
+	@Value("${base.host}")
+	private String host = "localhost";
+
+	private static final String ROBOTS_ALLOW_ALL = "User-Agent: *\nAllow: /";
+	private static final String ROBOTS_DENY_ALL = "User-Agent: *\nDisallow: /";
+
+	@RequestMapping(method = RequestMethod.GET)
+	public @ResponseBody
+	String robotsTxt(HttpServletResponse response, HttpServletRequest request) {
+		response.setContentType("text/plain");
+		String reqHost = request.getHeader("Host");
+		if (StringUtils.isNotBlank(reqHost) && StringUtils.contains(reqHost, ":")) {
+			reqHost = reqHost.substring(0, reqHost.indexOf(":"));
+		}
+
+		if (StringUtils.equalsIgnoreCase(this.host, reqHost)) {
+			return ROBOTS_ALLOW_ALL;
+		} else {
+			return ROBOTS_DENY_ALL;
+		}
+	}
+}

src/main/resources/spring/spring.properties

@@ -14,7 +14,9 @@
 # limitations under the License.
 #-------------------------------------------------------------------------------
 
-base.url=http://localhost:8080
+base.host=localhost
+base.hostname=${base.host}:8080
+base.url=http://${base.hostname}
 base.cookie-domain=
 base.cookie-secure=false
 base.cookie-http-only=false

src/main/webapp/robots.txt

-User-Agent: *
-Allow: /
\ No newline at end of file