Exception Netty 3.5.8-Final-帧解码器帮助
我的帧解码器有以下代码:Exception Netty 3.5.8-Final-帧解码器帮助,exception,netty,decoder,Exception,Netty,Decoder,我的帧解码器有以下代码: protected Object decode(ChannelHandlerContext channelHandlerContext, Channel channel, ChannelBuffer channelBuffer) throws Exception { //Header 1 + 4 length bytes if (channelBuffer.readableBytes() < 5) { return
protected Object decode(ChannelHandlerContext channelHandlerContext,
Channel channel, ChannelBuffer channelBuffer) throws Exception {
//Header 1 + 4 length bytes
if (channelBuffer.readableBytes() < 5) {
return null;
}
System.out.println(channelBuffer.readerIndex());
//mark the reader index
channelBuffer.markReaderIndex();
//extract the length bytes and convert to an int value
//**note: length value of the message is a decimal not hex
StringBuilder lengthBuilder = new StringBuilder("");
for (int ctr = 1; ctr < 5; ctr += 1) {
lengthBuilder.append(String.format("%02x",
channelBuffer.getByte(ctr)));
}
int length = Integer.parseInt(hexToASCII(lengthBuilder.toString()));
System.out.println("This is the length: " + length);
System.out.println("reader index: " + channelBuffer.readerIndex());
channelBuffer.readerIndex(4);
//get the remaining bytes
if (channelBuffer.readableBytes() <= length) {
channelBuffer.resetReaderIndex();
return null;
}
String s = "";
for (int ctr = 0; ctr < length + 5; ctr += 1) {
s += (char) channelBuffer.getByte(ctr);
}
return s;
}
受保护对象解码(ChannelHandlerContext ChannelHandlerContext,
通道,通道缓冲区(通道缓冲区)引发异常{
//头1+4个长度字节
if(channelBuffer.readableBytes()<5){
返回null;
}
System.out.println(channelBuffer.readerIndex());
//标记读者索引
channelBuffer.markReaderIndex();
//提取长度字节并转换为int值
//**注意:消息的长度值是十进制而不是十六进制
StringBuilder lengthBuilder=新StringBuilder(“”);
对于(int ctr=1;ctr<5;ctr+=1){
lengthBuilder.append(String.format(“%02x”),
channelBuffer.getByte(ctr));
}
int length=Integer.parseInt(hexToASCII(lengthBuilder.toString());
System.out.println(“这是长度:“+length”);
System.out.println(“读卡器索引:+channelBuffer.readerIndex());
channelBuffer.readerIndex(4);
//获取剩余的字节
if(channelBuffer.readableBytes()通过将readerIndex从4更改为5进行修复
channelBuffer.readerIndex(4);
在返回结果之前,我还添加了一个读卡器索引重置,以便它能够读取整个消息,而不仅仅是实际消息:)
channelBuffer.readerIndex(0);
字符串s=“”;
对于(整数中心=0;中心<长度+5;中心+=1){
s+=(char)channelBuffer.getByte(ctr);
}
channelBuffer.readerIndex(0);
String s = "";
for (int ctr = 0; ctr < length + 5; ctr += 1) {
s += (char) channelBuffer.getByte(ctr);
}