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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  
20  package org.apache.myfaces.tobago.facelets;
21  
22  import org.slf4j.Logger;
23  import org.slf4j.LoggerFactory;
24  
25  import javax.servlet.Filter;
26  import javax.servlet.FilterConfig;
27  import javax.servlet.ServletException;
28  import javax.servlet.ServletRequest;
29  import javax.servlet.ServletResponse;
30  import javax.servlet.FilterChain;
31  import javax.servlet.annotation.WebFilter;
32  import java.io.IOException;
33  
34  @WebFilter(urlPatterns = "/*")
35  public class FixCharacterEncodingFilter implements Filter {
36  
37    private static final Logger LOG = LoggerFactory.getLogger(FixCharacterEncodingFilter.class);
38  
39    @Override
40    public void init(final FilterConfig filterConfig) throws ServletException {
41      if (LOG.isInfoEnabled()) {
42        LOG.info("Filter initialized: Setting characterEncoding to UTF-8 to all requests.");
43      }
44    }
45  
46    @Override
47    public void doFilter(
48        final ServletRequest servletRequest, final ServletResponse servletResponse, final FilterChain filterChain)
49        throws IOException, ServletException {
50      if (servletRequest.getCharacterEncoding() == null) {
51        servletRequest.setCharacterEncoding("UTF-8");
52      }
53      filterChain.doFilter(servletRequest, servletResponse);
54    }
55  
56    @Override
57    public void destroy() {
58    }
59  }