程序包 xyz.xiezc.ioc.starter.starter.web.netty.file

类 HttpStaticFileServerHandler

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.channel.SimpleChannelInboundHandler<HttpRequest>

xyz.xiezc.ioc.starter.starter.web.netty.file.HttpStaticFileServerHandler

所有已实现的接口:

io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler

@Sharable
public class HttpStaticFileServerHandler
extends io.netty.channel.SimpleChannelInboundHandler<HttpRequest>

A simple handler that serves incoming HTTP requests to send their respective HTTP responses. It also implements 'If-Modified-Since' header to take advantage of browser cache, as described in RFC 2616.

How Browser Caching Works

Web browser caching works with HTTP headers as illustrated by the following sample:

1. Request #1 returns the content of /file1.txt.
2. Contents of /file1.txt is cached by the browser.
3. Request #2 for /file1.txt does not return the contents of the file again. Rather, a 304 Not Modified is returned. This tells the browser to use the contents stored in its cache.
4. The server knows the file has not been modified because the If-Modified-Since date is the same as the file's last modified date.

 Request #1 Headers
 ===================
 GET /file1.txt HTTP/1.1

 Response #1 Headers
 ===================
 HTTP/1.1 200 OK
 Date:               Tue, 01 Mar 2011 22:44:26 GMT
 Last-Modified:      Wed, 30 Jun 2010 21:36:48 GMT
 Expires:            Tue, 01 Mar 2012 22:44:26 GMT
 Cache-Control:      private, max-age=31536000

 Request #2 Headers
 ===================
 GET /file1.txt HTTP/1.1
 If-Modified-Since:  Wed, 30 Jun 2010 21:36:48 GMT

 Response #2 Headers
 ===================
 HTTP/1.1 304 Not Modified
 Date:               Tue, 01 Mar 2011 22:44:28 GMT

 

嵌套类概要

从接口继承的嵌套类/接口 io.netty.channel.ChannelHandler

io.netty.channel.ChannelHandler.Sharable

字段概要

字段

修饰符和类型	字段	说明
static DateTimeFormatter	dateTimeFormatter
static int	HTTP_CACHE_SECONDS
static String	HTTP_DATE_FORMAT
static String	HTTP_DATE_GMT_TIMEZONE
String	staticPath

构造器概要

构造器

构造器	说明
HttpStaticFileServerHandler(String staticPath)

方法概要

修饰符和类型	方法	说明
void	channelRead0(io.netty.channel.ChannelHandlerContext ctx, HttpRequest request)
void	exceptionCaught(io.netty.channel.ChannelHandlerContext ctx, Throwable cause)
void	handle(io.netty.channel.ChannelHandlerContext ctx, HttpRequest httpRequest)

从类继承的方法 io.netty.channel.SimpleChannelInboundHandler

acceptInboundMessage, channelRead

从类继承的方法 io.netty.channel.ChannelInboundHandlerAdapter

channelActive, channelInactive, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, userEventTriggered

从类继承的方法 io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, handlerAdded, handlerRemoved, isSharable

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 io.netty.channel.ChannelHandler

handlerAdded, handlerRemoved

字段详细资料

HTTP_DATE_FORMAT

public static final String HTTP_DATE_FORMAT

另请参阅:

常量字段值

dateTimeFormatter

public static final DateTimeFormatter dateTimeFormatter

HTTP_DATE_GMT_TIMEZONE

public static final String HTTP_DATE_GMT_TIMEZONE

另请参阅:

常量字段值

HTTP_CACHE_SECONDS

public static final int HTTP_CACHE_SECONDS

另请参阅:

常量字段值

staticPath

public String staticPath

构造器详细资料

HttpStaticFileServerHandler

public HttpStaticFileServerHandler(String staticPath)

方法详细资料

channelRead0

public void channelRead0(io.netty.channel.ChannelHandlerContext ctx,
                         HttpRequest request)
                  throws Exception

指定者:

channelRead0 在类中 io.netty.channel.SimpleChannelInboundHandler<HttpRequest>

抛出:

Exception

handle

public void handle(io.netty.channel.ChannelHandlerContext ctx,
                   HttpRequest httpRequest)

exceptionCaught

public void exceptionCaught(io.netty.channel.ChannelHandlerContext ctx,
                            Throwable cause)

指定者:

exceptionCaught 在接口中 io.netty.channel.ChannelHandler

指定者:

exceptionCaught 在接口中 io.netty.channel.ChannelInboundHandler

覆盖:

exceptionCaught 在类中 io.netty.channel.ChannelInboundHandlerAdapter