我使用Apache Camel来帮助捕获由第三方软件包发出的消息数据。在这个特定的例子中,我只需要捕获软件生成的内容,在另一端没有接收器(实际上没有“end”可去)。

所以,我试图设置一个只有“from”端点和没有“to”端点的路由。显然这是不正确的用法,因为我收到了以下异常:

[2018-08-15 11:08:03.205] ERROR: string.Launcher:191 - Exception

org.apache.camel.FailedToCreateRouteException: Failed to create route route1 at: >>> From[mina:udp://localhost:9877?sync=false] <<< in route: Route(route1)[[From[mina:udp://localhost:9877?sync=false]] -... because of Route route1 has no output processors. You need to add outputs to the route such as to("log:foo").

at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:1063)

at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:196)

at org.apache.camel.impl.DefaultCamelContext.startRoute(DefaultCamelContext.java:974)

at org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:3301)

at org.apache.camel.impl.DefaultCamelContext.doStartCamel(DefaultCamelContext.java:3024)

at org.apache.camel.impl.DefaultCamelContext.access$000(DefaultCamelContext.java:175)

at org.apache.camel.impl.DefaultCamelContext$2.call(DefaultCamelContext.java:2854)

at org.apache.camel.impl.DefaultCamelContext$2.call(DefaultCamelContext.java:2850)

at org.apache.camel.impl.DefaultCamelContext.doWithDefinedClassLoader(DefaultCamelContext.java:2873)

at org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:2850)

at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:61)

at org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:2819)

at {removed}.Launcher.startCamel(Launcher.java:189)

at {removed}.Launcher.main(Launcher.java:125)

Caused by: java.lang.IllegalArgumentException: Route route1 has no output processors. You need to add outputs to the route such as to("log:foo").

at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:1061)

... 13 more

例外建议

to("log:foo")