阿帕奇骆驼发送一个简单的消息 [英] Apache camel send a simple message
问题描述
我有一个使用 JAVA DSL 的简单的骆驼 MINA 服务器，我的运行方式与此处记录的示例一样:
I have a simply camel MINA server using the JAVA DSL, and I am running like the example documented here:
我正在尝试创建一个托管在mina:tcp://localhost:9991"(又名 MyApp_B)的示例应用程序，它向托管在mina:tcp://localhost:9990"的服务器发送一条非常简单的消息(又名 MyApp_A).
I am trying to create a sample application hosted at "mina:tcp://localhost:9991" (aka MyApp_B) that sends a very simple message to a server hosted at "mina:tcp://localhost:9990" (aka MyApp_A).
我想要发送一个简单的消息，该消息在标头中包含一个字符串(即Hellow World！")，并在正文中包含地址.
I want is to send a simple message containing a String in the header (which is "Hellow World!") and with the address in the body.
public class MyApp_B extends Main{
public static final String MINA_HOST = "mina:tcp://localhost:9991";
public static void main(String... args) throws Exception {
MyApp_B main = new MyApp_B();
main.enableHangupSupport();
main.addRouteBuilder(
new RouteBuilder(){
@Override
public void configure() throws Exception {
from("direct:start")
.setHeader("order", constant("Hello World!"))
.setBody(constant(MINA_HOST))
.to("mina:tcp://localhost:9990");
}
}
);
System.out.println("Starting Camel MyApp_B. Use ctrl + c to terminate the JVM.
");
main.run();
}
}
<小时>
public class MainApp_A {
public static void main(String... args) throws Exception {
Main main = new Main();
main.enableHangupSupport();
main.addRouteBuilder(new RouteBuilder(){
@Override
public void configure() throws Exception {
from("mina:tcp://localhost:9990").bean(MyRecipientListBean.class,
"updateServers").to("direct:debug");
from("direct:debug").process(new Processor() {
public void process(Exchange exchange) throws Exception {
System.out.println("Received order: " +
exchange.getIn().getBody());
}
});
}
});
main.run(args);
}
}
<小时>
MyApp_A 使用的 Bean:
Bean used by MyApp_A:
public class MyRecipientListBean {
public final static String REMOVE_SERVER = "remove";
public final static String ADD_SERVER = "add";
private Set<String> servers = new HashSet<String>();
public void updateServers(@Body String serverURI,
@Header("order") String order){
System.out.println("===============================================
");
System.out.println("Received " + order + "request from server " + serverURI + "
");
System.out.println("===============================================
");
if(order.equals(ADD_SERVER))
servers.add(serverURI);
else if(order.equals(REMOVE_SERVER))
servers.remove(serverURI);
}
}
我已经完成了这段代码，但是，另一端的服务器似乎没有收到任何东西.因此我有两个问题:
I have done this code, however, the servers on the other side don't seem to receive anything. Therefore I have 2 questions:
- 我做错了吗?
- 有没有更好的方法来使用 Camel 发送简单的消息?
推荐答案
MyApp_A 不发送任何消息.您需要向直接端点发送消息以启动路由.
MyApp_A does NOT send any messages. You need to send a message to the direct endpoint to start the route.
您也可以直接更改为计时器组件，使其每 X 秒触发一次，等等.
You can also change direct to a timer component to have it trigger every X second etc.
按要求添加了最新评论:
是的，直接路线也在运行.它只是发送一个要指导的消息，您需要使用 Camel 执行此操作.直接是一个用于在其端点之间发送消息的内部 Camel 组件(路线).要向它发送消息，您可以使用生产者模板.请参阅 Camel in Action 一书的第 7 章第 7.7 节.
yes and the direct route is also running. Its just that to send a message to direct, you need to do that using Camel. direct is an internal Camel component for sending messages between its endpoint (routes). To send a message to it, you can use the producer template. See chapter 7, section 7.7 in the Camel in Action book.
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