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我在以下博客中描述的示例 Web 服务的 MessageContext 中启动 JAXWSProperties 有问题

在 getHeaders() 方法中有启动 HeaderList 对象的辅助类：

import com.sun.xml.internal.ws.api.SOAPVersion;
import com.sun.xml.internal.ws.api.addressing.AddressingVersion;
import com.sun.xml.internal.ws.api.message.HeaderList;
import com.sun.xml.internal.ws.api.message.Headers;
import com.sun.xml.internal.ws.developer.JAXWSProperties;
import com.sun.xml.internal.ws.developer.WSBindingProvider;

import javax.xml.ws.EndpointReference;
import javax.xml.ws.Service;
import javax.xml.ws.WebServiceContext;

public final class CorrelationHelper<S extends Service> {

private WebServiceContext wsc;
private S service;

public CorrelationHelper(S service, WebServiceContext wsc) {
    this.service = service;
    this.wsc = wsc;
}

private HeaderList getHeaders() {
    return (HeaderList)wsc.getMessageContext().get(JAXWSProperties.INBOUND_HEADER_LIST_PROPERTY);
}

public <P> P getCorrelatedPort(Class<P> portType) {
    P port = service.getPort(getReplyTo(), portType);
    ((WSBindingProvider)port).setOutboundHeaders(Headers.create(AddressingVersion.W3C.relatesToTag,
                                                                getMessageId()));
    return port;
}

private EndpointReference getReplyTo() {
    return getHeaders().getReplyTo(AddressingVersion.W3C,
                                   SOAPVersion.SOAP_11).toSpec();
}


private String getMessageId() {
    return getHeaders().getMessageID(AddressingVersion.W3C,
                                     SOAPVersion.SOAP_11);
}
}

这个助手是从服务实现中调用的：

import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import javax.jws.HandlerChain;
import javax.jws.WebService;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.handler.MessageContext;
import javax.xml.ws.soap.Addressing;

import dev.home.examples.jobprocessor.client.JobProcessorNotify;
import dev.home.examples.jobprocessor.client.JobProcessorNotify_Service;
import dev.home.examples.jobprocessor.client.JobReplyType;
import dev.home.examples.jobprocessor.handlers.CorrelationHelper;
import dev.home.examples.jobprocessor.types.JobType;

@WebService(serviceName = "JobProcessor",
            targetNamespace = "http://examples.home.dev/jobprocessor",
            portName = "jobProcessor",
            endpointInterface = "dev.home.examples.jobprocessor.ws.JobProcessor")
@HandlerChain(file = "JobProcessor-HandlerChain.xml")
@Addressing(required = true)
public class JobProcessorImpl {
//...
public void processJob(JobType job) {

    // do processing
    int seconds = doJob();

    // prepare reply message
    JobReplyType jobReply = new JobReplyType();
    jobReply.setJobId(job.getJobId());
    jobReply.setResult(String.format("Job payload %s processed in %d seconds!",
                                     job.getPayload(), seconds));

    // do correlation and perform the callback
    JobProcessorNotify jobProcessorNotify =
        correlationHelper.getCorrelatedPort(JobProcessorNotify.class);
    jobProcessorNotify.replyFinishedJob(jobReply);
}
}

HeaderList 在 getReplyTo() 期间未启动，并且返回为 null：

(HeaderList)wsc.getMessageContext().get(JAXWSProperties.INBOUND_HEADER_LIST_PROPERTY)


Caused by: java.lang.NullPointerException
    at dev.home.examples.jobprocessor.handlers.CorrelationHelper.getReplyTo(CorrelationHelper.java:67)
    at dev.home.examples.jobprocessor.handlers.CorrelationHelper.getCorrelatedPort(CorrelationHelper.java:56)
    at dev.home.examples.jobprocessor.ws.JobProcessorImpl.processJob(JobProcessorImpl.java:61)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:180)
    at org.apache.cxf.jaxws.JAXWSMethodInvoker.performInvocation(JAXWSMethodInvoker.java:66)
    at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96)
    ... 17 more

尽管 SOAP 数据 Header 包含所有数据：

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:typ="http://examples.home.dev/jobprocessor/types">
   <soapenv:Header xmlns:wsa="http://www.w3.org/2005/08/addressing"><wsa:Action>http://examples.home.dev/jobprocessor/processJob</wsa:Action><wsa:ReplyTo><wsa:Address>http://CZ407032:8088/mockJobProcessorNotify</wsa:Address></wsa:ReplyTo><wsa:MessageID>uuid:96dd09e2-c448-47c0-902f-7eb95421e232</wsa:MessageID><wsa:To>http://CZ407032:8088/JobProcessor</wsa:To></soapenv:Header>
   <soapenv:Body>
      ...
   </soapenv:Body></soapenv:Envelope>
4

1 回答 1

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您正在使用该属性INBOUND_HEADER_LIST_PROPERTY。阅读JAX-WS 文档，显示令人不快的警告

此属性为实验性属性，如有更改，恕不另行通知。

HeaderList并且JAXWSProperties是com.sun.xml.internal.ws.*包中的类。你真的要使用这个吗？该博客的日期为 2012 年，可能是行为发生了变化

检查这个简单的代码是否返回一个非空对象（在你的服务中messageContext注入之后）@Resource

HeaderList hl = (HeaderList) messageContext.get(JAXWSProperties.INBOUND_HEADER_LIST_PROPERTY);
于 2016-11-24T08:13:06.000 回答