我有两个弹簧启动应用程序。一个在端口8081上运行ZuulProxy服务器，并将对/ notification发出的所有请求转发到在端口8086上运行的另一个Spring引导应用程序（通知服务器）。
zuul配置如下所示
zuul:
routes:
notification:
path: /notification/**
url: http://localhost:8086
通知服务器代码如下所示
@RestController
public class JmsController {
private Logger log = Logger.getLogger(this.getClass());
private final List<SseEmitter> emitters = new ArrayList<>();
@Autowired
private JmsService jmsService;
@RequestMapping(value = "send", method = RequestMethod.POST, consumes= MediaType.APPLICATION_JSON_VALUE)
public NotificationDTO sendMessage(@RequestBody NotificationDTO dto){
jmsService.sendMessage(dto);
return dto;
}
@RequestMapping(path = "/stream", method = RequestMethod.GET)
public SseEmitter stream() throws IOException {
SseEmitter emitter = new SseEmitter();
emitters.add(emitter);
emitter.onCompletion(() -> emitters.remove(emitter));
return emitter;
}
@JmsListener(destination = "${queue.name}", containerFactory = "myJmsContainerFactory")
public void receiveMessage(NotificationDTO dto) throws Exception{
log.info("Got message" + dto);
if(emitters!=null && emitters.size() > 0) {
emitters.forEach((SseEmitter emitter) -> {
try {
emitter.send(dto, MediaType.APPLICATION_JSON);
} catch (IOException e) {
emitter.complete();
emitters.remove(emitter);
log.info(e);
}
});
}else{
log.info("No emitters");
}
}
}
html页面如下：
<script>
var myName = null;
var form = document.getElementById('form');
var nameForm = null;
var connected = false;
var setMyName = function () {
myName = $('#myname').val();
$('#myModal').modal('hide');
return false;
};
var connect = function () {
var source = new EventSource('http://localhost:8081/notification/stream');
source.addEventListener('open', function (e) {
console.log('connected');
});
source.addEventListener('message', function (e) {
console.log(e.data);
var message = JSON.parse(e.data);
var outMesage = $(
'<div class="row">' +
' <div class="col-md-2"><strong>' + message.id + '</strong></div>' +
' <div class="col-md-10"><p>' + message.label + '</p></div>' +
'</div>'
);
$('#notificationLog').append(outMesage);
}, false);
source.addEventListener('error', function (e) {
if (e.readyState == EventSource.CLOSED) {
connected = false;
connect();
}
}, false);
};
$(function () {
connect();
});
</script>
当我直接针对通知服务器http://localhost:8086/index.html运行html页面时，应用程序正常运行。
当我针对zuul代理服务器http://localhost:8081/notification/index2.html运行html页面时，我在10秒后收到以下错误：
java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
at java.net.SocketInputStream.read(SocketInputStream.java:170)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at org.apache.http.impl.io.AbstractSessionInputBuffer.fillBuffer(AbstractSessionInputBuffer.java:160)
at org.apache.http.impl.io.SocketInputBuffer.fillBuffer(SocketInputBuffer.java:84)
at org.apache.http.impl.io.AbstractSessionInputBuffer.readLine(AbstractSessionInputBuffer.java:273)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:140)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:260)
at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:283)
at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:251)
at org.apache.http.impl.conn.AbstractClientConnAdapter.receiveResponseHeader(AbstractClientConnAdapter.java:223)
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:271)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123)
at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:685)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:487)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:115)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
at org.springframework.cloud.netflix.zuul.filters.route.SimpleHostRoutingFilter.forwardRequest(SimpleHostRoutingFilter.java:259)
at org.springframework.cloud.netflix.zuul.filters.route.SimpleHostRoutingFilter.forward(SimpleHostRoutingFilter.java:222)
at org.springframework.cloud.netflix.zuul.filters.route.SimpleHostRoutingFilter.run(SimpleHostRoutingFilter.java:174)
at com.netflix.zuul.ZuulFilter.runFilter(ZuulFilter.java:112)
at com.netflix.zuul.FilterProcessor.processZuulFilter(FilterProcessor.java:197)
at com.netflix.zuul.FilterProcessor.runFilters(FilterProcessor.java:161)
at com.netflix.zuul.FilterProcessor.route(FilterProcessor.java:120)
at com.netflix.zuul.ZuulRunner.route(ZuulRunner.java:84)
at com.netflix.zuul.http.ZuulServlet.route(ZuulServlet.java:111)
at com.netflix.zuul.http.ZuulServlet.service(ZuulServlet.java:77)
at org.springframework.web.servlet.mvc.ServletWrappingController.handleRequestInternal(ServletWrappingController.java:158)
at org.springframework.cloud.netflix.zuul.web.ZuulController.handleRequestInternal(ZuulController.java:43)
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:146)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:50)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextHeaderFilter.doFilterInternal(EndpointWebMvcAutoConfiguration.java:295)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:102)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:68)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1521)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1478)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$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)
我将应用程序的代码上传到github，以防您需要运行代码或获取有关此实现的更多详细信息。
https://github.com/karimgarza/zuulnotifications
发送这样的POST应该会自动在浏览器上显示一条消息。该网页仅接收前10秒的消息，然后超时。
curl 'http://localhost:8081/notification/send' -H 'Origin: chrome-extension://hgmloofddffdnphfgcellkdfbfbjeloo' -H 'Accept-Encoding: gzip, deflate' -H 'Accept-Language: en-US,en;q=0.8,pt;q=0.6,pt-BR;q=0.4' -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.125 Safari/537.36' -H 'Content-Type: application/json' -H 'Accept: */*' -H 'Connection: keep-alive' --data-binary '{"id":"12345","label":"my test 6 curl","type":1,"url":"http://www.gmail.com"}' --compressed
先谢谢你
答案 0 :(得分：8)
查看该代码，它不是硬编码，而是默认为您可以在application.properties：zuul.host.socket-timeout-millis中设置的可配置值。另一个是zuul.host.connect-timeout-millis。
答案 1 :(得分：0)
对我来说，通过zuul发送事件的服务器无效。我使用spring boot 1.5.8和cloud Dalston.SR4
zuul是否支持SSE？
XHR请求对enpdpoint打开但我没有得到回应