红帽全球峰会78.7. 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);
}
};
}
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);
}
@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);
}
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