我运行一个聊天服务器,该服务器使用Atmosphere作为Websocket支持的框架。 Atmosphere之所以使用Jersey,是因为我使用的是大气球衣Maven依赖项。
聊天服务器在Tomcat 7上运行,我们正在升级到Tomcat 8。
我们的一位客户使用Tyrus作为他们的Java websocket API。
当我们的聊天服务器部署在Tomcat 7(使用Java 6,7或8)上时,没有任何问题。
在Tomcat 8(Java 8)上使用我们的聊天服务器时,使用Atmosphere的测试客户端可以正常工作,但是使用Tyrus的客户端则不能。我们看到的错误是:
2017-01-17 02:36:51,114 ERROR () [http-nio-8443-exec-11] ReflectorServletProcessor (?) - onRequest()
java.lang.IllegalArgumentException: Schema specific part is opaque
at com.sun.jersey.api.uri.UriBuilderImpl.checkSsp(UriBuilderImpl.java:529)
at com.sun.jersey.api.uri.UriBuilderImpl.replacePath(UriBuilderImpl.java:256)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:703)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.atmosphere.util.AtmosphereFilterChain.doFilter(AtmosphereFilterChain.java:135)
at org.atmosphere.util.AtmosphereFilterChain.invokeFilterChain(AtmosphereFilterChain.java:96)
at org.atmosphere.handler.ReflectorServletProcessor$FilterChainServletWrapper.service(ReflectorServletProcessor.java:317)
at org.atmosphere.handler.ReflectorServletProcessor.onRequest(ReflectorServletProcessor.java:160)
at org.atmosphere.cpr.AsynchronousProcessor.action(AsynchronousProcessor.java:199)
at org.atmosphere.cpr.AsynchronousProcessor.suspended(AsynchronousProcessor.java:107)
at org.atmosphere.container.Servlet30CometSupport.service(Servlet30CometSupport.java:66)
at org.atmosphere.cpr.AtmosphereFramework.doCometSupport(AtmosphereFramework.java:2078)
at org.atmosphere.websocket.DefaultWebSocketProcessor.dispatch(DefaultWebSocketProcessor.java:571)
at org.atmosphere.websocket.DefaultWebSocketProcessor$3.run(DefaultWebSocketProcessor.java:333)
at org.atmosphere.util.VoidExecutorService.execute(VoidExecutorService.java:101)
at org.atmosphere.websocket.DefaultWebSocketProcessor.dispatch(DefaultWebSocketProcessor.java:328)
at org.atmosphere.websocket.DefaultWebSocketProcessor.invokeWebSocketProtocol(DefaultWebSocketProcessor.java:525)
at org.atmosphere.websocket.DefaultWebSocketProcessor.invokeWebSocketProtocol(DefaultWebSocketProcessor.java:428)
at org.atmosphere.container.JSR356Endpoint$1.onMessage(JSR356Endpoint.java:213)
at org.atmosphere.container.JSR356Endpoint$1.onMessage(JSR356Endpoint.java:210)
at org.apache.tomcat.websocket.WsFrameBase.sendMessageText(WsFrameBase.java:393)
at org.apache.tomcat.websocket.WsFrameBase.processDataText(WsFrameBase.java:494)
at org.apache.tomcat.websocket.WsFrameBase.processData(WsFrameBase.java:289)
at org.apache.tomcat.websocket.WsFrameBase.processInputBuffer(WsFrameBase.java:130)
at org.apache.tomcat.websocket.server.WsFrameServer.onDataAvailable(WsFrameServer.java:60)
at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler$WsReadListener.onDataAvailable(WsHttpUpgradeHandler.java:183)
at org.apache.coyote.http11.upgrade.AbstractServletInputStream.onDataAvailable(AbstractServletInputStream.java:198)
at org.apache.coyote.http11.upgrade.AbstractProcessor.upgradeDispatch(AbstractProcessor.java:96)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:669)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
发生这种情况的原因是,对于Tomcat 7,Websocket请求中的请求URL被视为类似于“ http:// localhost:8080 / chat /”(该请求是对ws:// localhost:8080 / chat /进行的,但已更改)到http://)。但是对于Tomcat 8,来自websocket请求的请求URL与“ / chat /”类似,并且该模式不存在,并且Jersey引发错误。
为了解决这个问题,Atmosphere会在Atmosphere客户端发出请求时寻找具有模式的标头“ origin”。但是,当Tyrus客户端发出请求时,该“原始”标头不包含http模式,从而导致上述错误。
我想知道是否有人对此有一个简单的解决方案的想法或遇到类似的问题。我已经做了很多寻找简单解决方案的尝试,但是还没有找到。没有一个,我们正在考虑必须停止使用Atmosphere,而要使用其他很多代码重构的东西。
这些是有关此问题的票证/错误的一些链接,这些链接似乎可以解决此问题,但我的版本正确,仍然存在问题。
https://bz.apache.org/bugzilla/show_bug.cgi?id=56573
https://github.com/Atmosphere/atmosphere/issues/1839
大气版本:2.4.8
球衣版本(通过氛围):1.19
Tyrus版本:1.13
最佳答案
解决方法是通过“过滤器”更改“ origin”标头,并添加http://模式(如果不存在)。本文有助于弄清它:Modify request parameter with servlet filter
import java.io.IOException;
import java.util.Collections;
import java.util.Enumeration;
import javax.servlet.*;
public class FixSchemaFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {}
@Override
public void destroy() {}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
if (request instanceof HttpServletRequest) {
chain.doFilter(new FixSchemaHttpServletRequest((HttpServletRequest) request), response);
} else {
chain.doFilter(request, response);
}
}
public class FixSchemaHttpServletRequest extends HttpServletRequestWrapper {
public FixSchemaHttpServletRequest(HttpServletRequest request) {
super(request);
}
@Override
public String getHeader(String header) {
String value = super.getHeader(header);
if (header.equalsIgnoreCase("origin") && !value.startsWith("http://")) {
return "http://" + value;
}
return value;
}
@Override
public Enumeration getHeaders(String header) {
Enumeration enumeration = super.getHeaders(header);
if (header.equalsIgnoreCase("origin") && super.getHeader(header) != null && !super.getHeader(header).startsWith("http://")) {
return Collections.enumeration(Collections.singleton(getHeader(header)));
}
return enumeration;
}
}
}
然后将过滤器添加到web.xml
<filter>
<filter-name>FixSchemaFilter</filter-name>
<filter-class>com.example.FixSchemaFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>FixSchemaFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>