春季集成：int-http：入站網關沒有路徑變量集

Question

我正在使用Spring集成的（版本4.3.1）int-http：入站網關，我發現＃路徑變量沒有設置。

<int-http:inbound-gateway id="httpInboundGatewayPathAdapterControlBus" 
         request-channel="controlBusIn" 
         reply-channel="controlBusWithReplyChannel" 
         supported-methods="GET" 
         path="{pathvalue}" request-payload-type="java.lang.String" 
         payload-expression="#pathVariables.pathvalue"> 

我的web.xml

<listener> 
    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> 
</listener> 

<servlet> 
    <servlet-name>httpInboundGatewayPathAdapterControlBus</servlet-name> 
    <servlet-class>org.springframework.web.context.support.HttpRequestHandlerServlet</servlet-class> 
</servlet> 

<servlet-mapping> 
    <servlet-name>httpInboundGatewayPathAdapterControlBus</servlet-name> 
    <url-pattern>/controlBusURIExpression/*</url-pattern> 
</servlet-mapping> 

調試似乎表明春天的HttpRequestHandlingEndpointSupport發現下面沒有設置URI_TEMPLATE_VARIABLES_ATTRIBUTE： -

Map<String, String> pathVariables = 
      (Map<String, String>) servletRequest.getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE); 

我也嘗試添加

<bean id="integrationRequestMappingHandlerMapping" class="org.springframework.integration.http.inbound.IntegrationRequestMappingHandlerMapping"/> 

但仍然得到一個異常，我想因爲沒有路徑變量被添加，堆棧跟蹤表明IntegrationRequestMappingHandlerMapping沒有被使用。

任何幫助將不勝感激。

 
    2017-02-17 11:26:03.223:WARN:oejs.ServletHandler:qtp2505735-16: /xxxxxxxxx-integration-app/controlBusURIExpression/controlBus/getCreateCheckCaseCurrentConsumers 
org.springframework.expression.spel.SpelEvaluationException: EL1007E:(pos 0): Property or field 'pathvalue' cannot be found on null 
     at org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:220) 
     at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:94) 
     at org.springframework.expression.spel.ast.PropertyOrFieldReference.access$000(PropertyOrFieldReference.java:46) 
     at org.springframework.expression.spel.ast.PropertyOrFieldReference$AccessorLValue.getValue(PropertyOrFieldReference.java:374) 
     at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:88) 
     at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:120) 
     at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:242) 
     at org.springframework.integration.http.inbound.HttpRequestHandlingEndpointSupport.actualDoHandleRequest(HttpRequestHandlingEndpointSupport.java:463) 
     at org.springframework.integration.http.inbound.HttpRequestHandlingEndpointSupport.doHandleRequest(HttpRequestHandlingEndpointSupport.java:399) 
     at org.springframework.integration.http.inbound.HttpRequestHandlingMessagingGateway.handleRequest(HttpRequestHandlingMessagingGateway.java:103) 
     at org.springframework.web.context.support.HttpRequestHandlerServlet.service(HttpRequestHandlerServlet.java:67) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) 
     at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:806) 
     at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) 

Answer 1

我剛剛與http sample app試了一下，改變了入站網關

<int-http:inbound-gateway request-channel="receiveChannel" 
         path="{pathValue}" 
         payload-expression="#pathVariables.pathValue" 
         supported-methods="GET"/> 

而且這對我來說工作得很好：

我只能得到這個錯誤的錯誤地輸入變量名稱。

你的web.xml中應該是這樣的......

<?xml version="1.0" encoding="UTF-8"?> 
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> 
    <display-name>http</display-name> 
    <servlet> 
    <servlet-name>SI</servlet-name> 
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
    <init-param> 
     <param-name>contextConfigLocation</param-name> 
     <param-value>/WEB-INF/servlet-config.xml</param-value> 
    </init-param> 
    <load-on-startup>1</load-on-startup> 
    </servlet> 
    <servlet-mapping> 
    <servlet-name>SI</servlet-name> 
    <url-pattern>/*</url-pattern> 
    </servlet-mapping> 
</web-app>