Question

我正在处理一个rest应用程序，我的rest应用程序总是通过http头部传递一些参数来调用。我的rest应用程序中有一个过滤器，它可以为每个请求调用并从http头部检索参数，如图所示下方。

 @Override
public void doFilter(ServletRequest request, ServletResponse response,
        FilterChain chain) throws IOException, ServletException {
    HttpServletRequest httpServletRequest=(HttpServletRequest) request;
    String email = httpServletRequest.getHeader("user-email");         
    String userName = httpServletRequest.getHeader("user-name"); 
    chain.doFilter(request, response);
}

我的休息应用程序依次使用spring integration调用soap服务。调用soap服务的代码如下所示。

@RequestMapping(value = "/projects", method = RequestMethod.GET, produces = "application/json")
public @ResponseBody List<Project> getProject(HttpServletRequest httpRequest) {
    GetAuthorizedWebSendTransferProjects request = new GetAuthorizedWebSendTransferProjects();
    GetAuthorizedWebSendTransferProjectsResponse response = gw.getResponse(request);
    JAXBElement<ArrayOfProjectContainer> arr = response.getGetAuthorizedWebSendTransferProjectsResult();
    ArrayOfProjectContainer arr1 = arr.getValue();
    List<ProjectContainer> arr2 = arr1.getProjectContainer();
    List<Project> projects = getPopulatedProjectList(arr2);
    return projects;
}

应用context.xml中

<int:chain input-channel="requestChannel" output-channel="outputChannel">
    <int-ws:header-enricher>
        <int-ws:soap-action
            value="http://tempuri.org/IPermissionService/GetAuthorizedWebSendTransferProjects"/>
    </int-ws:header-enricher>
    <int-ws:outbound-gateway
        uri="http://10.255.2.51/PermissionService.svc?wsdl" marshaller="marshaller"
        unmarshaller="marshaller" interceptor="addHttpHeaderInterceptor"/>
</int:chain>

我还有一个拦截器来向http头添加参数，这是一个静态数据。

 @Override
public boolean handleRequest(MessageContext messageContext)
        throws WebServiceClientException {
    TransportContext context = TransportContextHolder.getTransportContext();
    HttpUrlConnection connection = (HttpUrlConnection) context.getConnection();
    HttpURLConnection connection1= connection.getConnection();
    connection1.addRequestProperty("user-email","ws_user1@biopacstest.domain");
    connection1.addRequestProperty("user-name","ws_user1");
    return true;
}

但是我需要动态地传递“user-email”和“user-name”而不是静态的，即我在过滤器中收到的数据。任何人都可以帮助我解决这个问题。在此先感谢。

Answer 1

解决方法是在拦截器中使用ThreadLocal，然后在调用网关之前设置标头。

private final ThreadLocal<MyHolder> holder = new ThreadLocal<MyHolder>();

@Override 
public boolean handleRequest(MessageContext messageContext)
        throws WebServiceClientException {
    TransportContext context = TransportContextHolder.getTransportContext();
    HttpUrlConnection connection = (HttpUrlConnection) context.getConnection();
    HttpURLConnection connection1= connection.getConnection();
    MyHolder holder = this.holder.remove();
    connection1.addRequestProperty("user-email", holder.getEmail());
    connection1.addRequestProperty("user-name", holder.getUser());
    return true;
}


public Message<?> setUserInfo(Message<?> message, String user, String email) {
    this.holder.set(new MyHolder(user, email));
    return message;
}

然后，在您的整合流程中，添加到chain ...

<int:service-activator expression=@interceptorBean.setUserInfo(#root, headers['user'], headers['email'])" />

（MyHolder是一个简单的java bean）。表达式可以是您想要的任何内容（不仅仅是标头访问）。或者，只需传入Message<?>并在代码中内部确定用户/电子邮件。

如何使用spring集成动态地通过http标头传递值

1 个答案: