79.7. 消耗 REST Request - Default Binding Style
CXF JAXRS 前端 实施 JAX-RS (JSR-311) API,以便我们可以将资源类导出为 REST 服务。我们利用 CXF Invoker API 将 REST 请求转变为普通的 Java 对象方法调用。与 Camel Restlet 组件不同,您不需要在端点中指定 URI 模板,CXF 会根据 JSR-311 规格将 REST 请求 URI 来处理资源类方法映射。在 Camel 中完成的所有操作都将这个方法请求委派给正确的处理器或端点。
以下是 CXFRS route… 示例
private static final String CXF_RS_ENDPOINT_URI = "cxfrs://http://localhost:" + CXT + "/rest?resourceClasses=org.apache.camel.component.cxf.jaxrs.testbean.CustomerServiceResource"; private static final String CXF_RS_ENDPOINT_URI2 = "cxfrs://http://localhost:" + CXT + "/rest2?resourceClasses=org.apache.camel.component.cxf.jaxrs.testbean.CustomerService"; private static final String CXF_RS_ENDPOINT_URI3 = "cxfrs://http://localhost:" + CXT + "/rest3?" + "resourceClasses=org.apache.camel.component.cxf.jaxrs.testbean.CustomerServiceNoAnnotations&" + "modelRef=classpath:/org/apache/camel/component/cxf/jaxrs/CustomerServiceModel.xml"; private static final String CXF_RS_ENDPOINT_URI4 = "cxfrs://http://localhost:" + CXT + "/rest4?" + "modelRef=classpath:/org/apache/camel/component/cxf/jaxrs/CustomerServiceDefaultHandlerModel.xml"; private static final String CXF_RS_ENDPOINT_URI5 = "cxfrs://http://localhost:" + CXT + "/rest5?" + "propagateContexts=true&" + "modelRef=classpath:/org/apache/camel/component/cxf/jaxrs/CustomerServiceDefaultHandlerModel.xml"; protected RouteBuilder createRouteBuilder() throws Exception { final Processor testProcessor = new TestProcessor(); final Processor testProcessor2 = new TestProcessor2(); final Processor testProcessor3 = new TestProcessor3(); return new RouteBuilder() { public void configure() { errorHandler(new NoErrorHandlerBuilder()); from(CXF_RS_ENDPOINT_URI).process(testProcessor); from(CXF_RS_ENDPOINT_URI2).process(testProcessor); from(CXF_RS_ENDPOINT_URI3).process(testProcessor); from(CXF_RS_ENDPOINT_URI4).process(testProcessor2); from(CXF_RS_ENDPOINT_URI5).process(testProcessor3); } }; }
以及用来配置 endpoint…
INFO:*注意资源类*
默认情况下,JAX-RS 资源类是 only* 用于配置 JAX-RS 属性。方法将 *not 在将消息路由到端点时执行。相反,路由负责执行所有处理。
请注意,从 Camel 2.15 开始,它还足以提供一个接口,而不能为默认模式实施类。
从 Camel 2.15 开始,如果启用了 performInvocation 选项,则首先将调用服务实施,该响应将设置在 Camel 交换上,并且路由执行将继续正常。这可用于将现有的 JAX-RS 实施集成到 Camel 路由中,并在自定义处理器中进行后处理 JAX-RS 响应。
@Path("/customerservice/") public interface CustomerServiceResource { @GET @Path("/customers/{id}/") Customer getCustomer(@PathParam("id") String id); @PUT @Path("/customers/") Response updateCustomer(Customer customer); @Path("/{id}") @PUT() @Consumes({ "application/xml", "text/plain", "application/json" }) @Produces({ "application/xml", "text/plain", "application/json" }) Object invoke(@PathParam("id") String id, String payload); }