REST服务:如何在不使用注释的情况下指定annotatedMethod

Question

我们试图从我们的类中取出所有注释并在一个中配置它spring-config.xml.

spring-config.xml 好像

<jaxrs:server id="restServer" address="/rest/">
        <jaxrs:model id="restModel">
            <jaxrs:resource name="com.csc.fs.rest.contact.RetrieveContactHistoryBP" path="retrieveContactHistoryBP">
                <jaxrs:operation name="retrieve" path="{partyId}" consumes="application/json" produces="application/json" verb="GET">
                    <jaxrs:param name="req" type="CONTEXT"/>
                    <jaxrs:param name="partyId" type="PATH"/>
                </jaxrs:operation>
            </jaxrs:resource>
            <jaxrs:resource name="com.csc.fs.rest.contact.StartContactBP" path="startContactBP">
                <jaxrs:operation name="startContact" path="/" consumes="application/json" produces="application/json" verb="PUT">
                    <jaxrs:param name="req" type="CONTEXT"/>
                    <jaxrs:param name="startContact" type="REQUEST_BODY"/>
                </jaxrs:operation>
            </jaxrs:resource>
        </jaxrs:model>
        <jaxrs:serviceBeans>

现在当我点击暴露的服务时:

我得到以下痕迹:

HTTP Status 500 - 
________________________________________
type Exception report
message 
description The server encountered an internal error () that prevented it from fulfilling this request.
exception 
java.lang.RuntimeException: org.apache.cxf.interceptor.Fault
    org.apache.cxf.interceptor.AbstractFaultChainInitiatorObserver.onMessage(AbstractFaultChainInitiatorObserver.java:102)
    org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:315)
    org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:113)
    org.apache.cxf.transport.servlet.ServletDestination.invoke(ServletDestination.java:105)
    org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:461)
    org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:188)
    org.apache.cxf.transport.servlet.AbstractCXFServlet.invoke(AbstractCXFServlet.java:148)
    org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:179)
    org.apache.cxf.transport.servlet.AbstractHTTPServlet.doGet(AbstractHTTPServlet.java:108)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:159)
root cause 
org.apache.cxf.interceptor.Fault
    org.apache.cxf.interceptor.AbstractFaultChainInitiatorObserver.onMessage(AbstractFaultChainInitiatorObserver.java:67)
    org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:315)
    org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:113)
    org.apache.cxf.transport.servlet.ServletDestination.invoke(ServletDestination.java:105)
    org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:461)
    org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:188)
    org.apache.cxf.transport.servlet.AbstractCXFServlet.invoke(AbstractCXFServlet.java:148)
    org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:179)
    org.apache.cxf.transport.servlet.AbstractHTTPServlet.doGet(AbstractHTTPServlet.java:108)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:159)
root cause 
java.lang.NullPointerException
    org.apache.cxf.jaxrs.model.wadl.WadlGenerator.handleOperation(WadlGenerator.java:310)
    org.apache.cxf.jaxrs.model.wadl.WadlGenerator.handleResource(WadlGenerator.java:253)
    org.apache.cxf.jaxrs.model.wadl.WadlGenerator.handleRequest(WadlGenerator.java:185)
    org.apache.cxf.jaxrs.impl.RequestPreprocessor.checkMetadataRequest(RequestPreprocessor.java:189)
?

我调试了cxf-jaxrs源码并在线上调试

java.lang.NullPointerException
        org.apache.cxf.jaxrs.model.wadl.WadlGenerator.handleOperation(WadlGenerator.java:310)

该方法搜索annotatedMethod但该对象具有由此抛出错误的annotatedMethod字段null.

我可以使用方法上面的类中的注释来使用它.但我希望它通过xml配置工作.

我指定了

<jaxrs:operation name="retrieve" path="{partyId}" consumes="application/json" produces="application/json" verb="GET">

这retrieve是要调用的操作.还需要设置哪些其他属性？或者它只是xml配置的限制？

PS:如果您觉得需要添加或澄清更多信息,请留下评论.RESTful服务的新功能,不确定在此上下文中所需的所有信息.

更新:

服务类

//@Path("/startContactBP")
public class StartContactBP {
    //@PUT  
    //@Consumes(MediaType.APPLICATION_JSON)
    //@Produces(MediaType.APPLICATION_JSON)
    //@Path ("/")   
    //public com.csc.fs.ws.contact.StartContactResult startContact(@Context HttpServletRequest req, com.csc.fs.ws.contact.StartContact startContact){
    public com.csc.fs.ws.contact.StartContactResult startContact(HttpServletRequest req, com.csc.fs.ws.contact.StartContact startContact){

        //call login
            //call actual service
            //call logoff
    }

Answer 1

据我所知，CXF 不一定期望该方法被注释，只是在恰好被调用的WadlGenerator类的实例上调用一个方法。这可能是因为开发人员只是懒惰，没有适当地命名该方法。OperationResourceInfogetAnnotatedMethod

我的建议是在堆栈跟踪中进行更高的调试，以查看是什么在创建该类的实例OperationResourceInfo，从中您应该能够看到此创建是否出错。

另外您使用的是哪个版本的CXf？确保其是最新的。

出于好奇，您是否有任何理由选择 XML 配置而不是注释？