1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.shiro.samples.sprhib.web;
20
21 import org.apache.shiro.samples.sprhib.model.User;
22 import org.apache.shiro.samples.sprhib.service.UserService;
23 import org.springframework.beans.factory.annotation.Autowired;
24 import org.springframework.stereotype.Component;
25 import org.springframework.web.servlet.ModelAndView;
26 import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
27
28 import javax.servlet.http.HttpServletRequest;
29 import javax.servlet.http.HttpServletResponse;
30
31 /**
32 * A Spring MVC interceptor that adds the currentUser into the request as a request attribute
33 * before the JSP is rendered. This operation is assumed to be fast because the User should be
34 * cached in the Hibernate second-level cache.
35 */
36 @Component
37 public class CurrentUserInterceptor extends HandlerInterceptorAdapter {
38
39 private UserService userService;
40
41 @Autowired
42 public void setUserService(UserService userService) {
43 this.userService = userService;
44 }
45
46 @Override
47 public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
48 // Add the current user into the request
49 User currentUser = userService.getCurrentUser();
50 if( currentUser != null ) {
51 httpServletRequest.setAttribute( "currentUser", currentUser );
52 }
53 }
54 }