| package org.apache.turbine.pipeline; |
| |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| import java.nio.charset.Charset; |
| |
| import javax.servlet.http.HttpServletRequest; |
| |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| import org.apache.turbine.Turbine; |
| import org.apache.turbine.util.LocaleUtils; |
| import org.apache.turbine.util.TurbineException; |
| |
| /** |
| * Set default encoding of the request. The default behavior is to respond |
| * with the charset that was requested. If the configuration sets a property named |
| * "locale.override.charset", the output encoding will always be set to its value, |
| * no matter what the input encoding is. |
| * |
| * This valve must be situated in the pipeline before any access to the |
| * {@link org.apache.fulcrum.parser.ParameterParser} to take effect. |
| * |
| * @author <a href="mailto:tv@apache.org">Thomas Vandahl</a> |
| */ |
| public class DefaultSetEncodingValve |
| implements Valve |
| { |
| private static final Logger log = LogManager.getLogger(DefaultSetEncodingValve.class); |
| |
| /** |
| * @see org.apache.turbine.pipeline.Valve#invoke(PipelineData, ValveContext) |
| */ |
| @Override |
| public void invoke(PipelineData pipelineData, ValveContext context) |
| throws IOException, TurbineException |
| { |
| HttpServletRequest req = pipelineData.get(Turbine.class, HttpServletRequest.class); |
| |
| // If the servlet container gives us no clear indication about the |
| // encoding of the contents, set it to our default value. |
| String requestEncoding = req.getCharacterEncoding(); |
| |
| if (requestEncoding == null) |
| { |
| requestEncoding = LocaleUtils.getDefaultInputEncoding(); |
| log.debug("Changing Input Encoding to {}", requestEncoding); |
| |
| try |
| { |
| req.setCharacterEncoding(requestEncoding); |
| } |
| catch (UnsupportedEncodingException uee) |
| { |
| throw new TurbineException("Could not change request encoding to " + requestEncoding, uee); |
| } |
| } |
| |
| // Copy encoding charset to RunData to set a reasonable default for the response |
| Charset outputEncoding = LocaleUtils.getOverrideCharset(); |
| if (outputEncoding == null) |
| { |
| outputEncoding = Charset.forName(requestEncoding); |
| } |
| |
| pipelineData.getRunData().setCharset(outputEncoding); |
| |
| // Pass control to the next Valve in the Pipeline |
| context.invokeNext(pipelineData); |
| } |
| } |