/*
* Copyright 2013-2018 Lilinfeng.
*
* 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 com.phei.netty.protocol.http.xml.codec;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPipeline;
import io.netty.handler.codec.MessageToMessageDecoder;
import java.io.StringReader;
import java.nio.charset.Charset;
import org.jibx.runtime.BindingDirectory;
import org.jibx.runtime.IBindingFactory;
import org.jibx.runtime.IUnmarshallingContext;
/**
* @author Lilinfeng
* @date 2014年3月1日
* @version 1.0
*/
public abstract class AbstractHttpXmlDecoder<T> extends
MessageToMessageDecoder<T> {
private IBindingFactory factory;
private StringReader reader;
private Class<?> clazz;
private boolean isPrint;
private final static String CHARSET_NAME = "UTF-8";
private final static Charset UTF_8 = Charset.forName(CHARSET_NAME);
protected AbstractHttpXmlDecoder(Class<?> clazz) {
this(clazz, false);
}
protected AbstractHttpXmlDecoder(Class<?> clazz, boolean isPrint) {
this.clazz = clazz;
this.isPrint = isPrint;
}
protected Object decode0(ChannelHandlerContext arg0, ByteBuf body)
throws Exception {
factory = BindingDirectory.getFactory(clazz);
String content = body.toString(UTF_8);
if (isPrint)
System.out.println("The body is : " + content);
reader = new StringReader(content);
IUnmarshallingContext uctx = factory.createUnmarshallingContext();
Object result = uctx.unmarshalDocument(reader);
reader.close();
reader = null;
return result;
}
/**
* Calls {@link ChannelHandlerContext#fireExceptionCaught(Throwable)} to
* forward to the next {@link ChannelHandler} in the {@link ChannelPipeline}
* .
*
* Sub-classes may override this method to change behavior.
*/
@Skip
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause)
throws Exception {
// 释放资源
if (reader != null) {
reader.close();
reader = null;
}
}
}