在apache camel中找不到与http http错误的组件

Question

我已经编写了使用apache camel调用rest api的示例代码.哪个在独立工作正常,但是我用来创建OSGI捆绑包的相同代码并将其部署到karaf容器中,捆绑包是成功创建的但我得到的错误如"没有组件找到方案http"当我尝试叫它.

你能帮我解决这个问题吗？

这是代码:

        CamelContext context = new DefaultCamelContext();
        context.addRoutes(new RouteBuilder() {
            public void configure() {
                from("direct:start")
                .setHeader(Exchange.HTTP_METHOD,simple("GET"))
                .to("http://10.10.10.10:8080/RestfulDemo/rest/get");
            }
        });

        context.start();

        ProducerTemplate template = context.createProducerTemplate();
        String headerValue = "application/xml";

        Map<String, Object> headers = new HashMap<String,Object>();
        headers.put("Content-Type", headerValue);

        Object result = template.requestBodyAndHeaders("direct:start", null, headers, String.class);
        Exchange exchange = new DefaultExchange(context); 
        String response = ExchangeHelper.convertToType(exchange, String.class, result); 
        System.out.println("Response : "+response);
        context.stop();

错误如下:

org.apache.camel.ResolveEndpointFailedException: Failed to resolve endpoint: http://10.10.10.10:8080/RestfulDemo/rest/get due to: No component found with scheme: http

Answer 1

将以下snipplet添加到您的pom.xml:

<dependency>
     <groupId>org.apache.camel</groupId>
     <artifactId>camel-http</artifactId>
     <version>x.x.x</version>
     <!-- use the same version as your Camel core version -->
 </dependency>

如果您在OSGI/Karaf/ServiceMix/JBoss FUSE ESB环境中使用Camel,则必须通过Karaf控制台添加捆绑包

features:install camel-http

有关安装camel for Karaf的更多信息,请访问http://camel.apache.org/karaf