我正在进行的HTTP请求中得到了302状态码,我希望它由我的Netty代码处理。
我的客户端代码:
我的处理器代码:
我的初始化代码:
我参考了这个链接,它与我的问题相似: redirect - handling http 302 moved temporarily using netty 但是这段代码使用的是 3.x 版本的库,而且目前还没有答案。
我正在使用 Netty 4.0.12 库。
请告诉我如何使用 Netty 处理这个问题。
我的客户端代码:
public static void main(String[] args) throws Exception {
URI uri = new URI("http://myurl.mydomain.com/v1/v2?param1=value1¶m2=value2");
String host = uri.getHost();
int port = 80;
// Configure the client.
EventLoopGroup group = new NioEventLoopGroup();
try {
Bootstrap b = new Bootstrap();
b.group(group)
.channel(NioSocketChannel.class)
.handler(new NettyClientInitializer());
// Make the connection attempt.
Channel ch = b.connect(host, port).sync().channel();
// Prepare the HTTP request.
HttpRequest request = new DefaultHttpRequest(
HttpVersion.HTTP_1_1, HttpMethod.GET, uri.toString());
request.headers().set(HttpHeaders.Names.HOST, host);
request.headers().set(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.KEEP_ALIVE);
request.headers().set(HttpHeaders.Names.CACHE_CONTROL, HttpHeaders.Values.NO_CACHE);
/*// Set some example cookies.
request.headers().set(
HttpHeaders.Names.COOKIE,
ClientCookieEncoder.encode(
new DefaultCookie("my-cookie", "foo"),
new DefaultCookie("another-cookie", "bar")));
*/
// Send the HTTP request.
ch.writeAndFlush(request);
// Wait for the server to close the connection.
ch.closeFuture().sync();
} finally {
// Shut down executor threads to exit.
group.shutdownGracefully();
}
}
我的处理器代码:
public class NettyClientHandler extends SimpleChannelInboundHandler<HttpObject> {
@Override
public void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
if (msg instanceof HttpResponse) {
HttpResponse response = (HttpResponse) msg;
System.out.println("STATUS: " + response.getStatus());
System.out.println("VERSION: " + response.getProtocolVersion());
System.out.println();
if (!response.headers().isEmpty()) {
for (String name: response.headers().names()) {
for (String value: response.headers().getAll(name)) {
System.out.println("HEADER: " + name + " = " + value);
}
}
System.out.println();
}
if (HttpHeaders.isTransferEncodingChunked(response)) {
System.out.println("CHUNKED CONTENT {");
} else {
System.out.println("CONTENT {");
}
}
if (msg instanceof HttpContent) {
HttpContent content = (HttpContent) msg;
System.out.print(content.content().toString(CharsetUtil.UTF_8));
System.out.flush();
if (content instanceof LastHttpContent) {
System.out.println("} END OF CONTENT");
}
}
}
@Override
public void exceptionCaught(
ChannelHandlerContext ctx, Throwable cause) throws Exception {
cause.printStackTrace();
ctx.close();
}
}
我的初始化代码:
public class NettyClientInitializer extends ChannelInitializer<SocketChannel> {
@Override
public void initChannel(SocketChannel ch) throws Exception {
// Create a default pipeline implementation.
ChannelPipeline p = ch.pipeline();
p.addLast("log", new LoggingHandler(LogLevel.INFO));
// Enable HTTPS if necessary.
/*
if (ssl) {
SSLEngine engine =
SecureChatSslContextFactory.getClientContext().createSSLEngine();
engine.setUseClientMode(true);
p.addLast("ssl", new SslHandler(engine));
}
*/
p.addLast("codec", new HttpClientCodec());
// Remove the following line if you don't want automatic content decompression.
// p.addLast("inflater", new HttpContentDecompressor());
// Uncomment the following line if you don't want to handle HttpChunks.
p.addLast("aggregator", new HttpObjectAggregator(1048576));
p.addLast("handler", new NettyClientHandler());
}
}
我参考了这个链接,它与我的问题相似: redirect - handling http 302 moved temporarily using netty 但是这段代码使用的是 3.x 版本的库,而且目前还没有答案。
我正在使用 Netty 4.0.12 库。
请告诉我如何使用 Netty 处理这个问题。