Spring HTTP调用:构建服务器上的测试崩溃

Question

我通过Spring HTTP调用构建一个API。我的config.xml看起来像这样：

<bean id="apiUrlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
    <property name="mappings">
        <props>
            <prop key="/remoteapi/boat">boatEndpointExporter</prop>
        </props>
    </property>
</bean>

<bean id="boatEndpointExporter" class="org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter">
    <property name="service" ref="rApiBoatEndpointImpl"/>
    <property name="serviceInterface" value="xxx.RApiBoatEndpoint"/>
</bean>

这是我的测试用例:它假装从应用程序外部调用API，并尝试ping它。

  @Test
public void invokePing() {
    RApiBoatEndpoint remoteInteface = buildRemoteInteface();
    assertEquals("test", remoteInteface.ping("test"));
}

private RApiBoatEndpoint buildRemoteInteface() {

    String url = WebDriverResourceManager.BASE_URL + "/remoteapi/boat";
    System.out.println("build remote interface for RApiBoatEndpoint - url=" + url);

    PoolingHttpClientConnectionManager poolingHttpClientConnectionManager = new PoolingHttpClientConnectionManager();
    poolingHttpClientConnectionManager.setMaxTotal(100);
    poolingHttpClientConnectionManager.setDefaultMaxPerRoute(5);

    CloseableHttpClient httpClient = HttpClientBuilder.create()
            .setConnectionManager(poolingHttpClientConnectionManager)
            .build();

    HttpComponentsHttpInvokerRequestExecutor httpComponentsHttpInvokerRequestExecutor = new HttpComponentsHttpInvokerRequestExecutor();
    httpComponentsHttpInvokerRequestExecutor.setHttpClient(httpClient);

    HttpInvokerProxyFactoryBean factory = new HttpInvokerProxyFactoryBean();
    factory.setServiceUrl(url);
    factory.setServiceInterface(RApiBoatEndpoint.class);
    factory.setHttpInvokerRequestExecutor(httpComponentsHttpInvokerRequestExecutor);
    factory.afterPropertiesSet();
    return (RApiBoatEndpoint) factory.getObject();
}

测试在我的IDE本地和通过maven都通过了。我可以手动调用api，也可以从客户端应用程序调用。

但是我们的构建服务器一直说它不工作：

org.springframework.remoting.RemoteAccessException: Could not access HTTP invoker remote service at [http://xxxx/remoteapi/boat]; nested exception is org.apache.http.NoHttpResponseException: Did not receive successful HTTP response: status code = 404, status message = [Not Found]
at org.springframework.remoting.httpinvoker.HttpComponentsHttpInvokerRequestExecutor.validateResponse(HttpComponentsHttpInvokerRequestExecutor.java:233)
at org.springframework.remoting.httpinvoker.HttpComponentsHttpInvokerRequestExecutor.doExecuteRequest(HttpComponentsHttpInvokerRequestExecutor.java:149)
at org.springframework.remoting.httpinvoker.AbstractHttpInvokerRequestExecutor.executeRequest(AbstractHttpInvokerRequestExecutor.java:138)
at org.springframework.remoting.httpinvoker.HttpInvokerClientInterceptor.executeRequest(HttpInvokerClientInterceptor.java:194)
at org.springframework.remoting.httpinvoker.HttpInvokerClientInterceptor.executeRequest(HttpInvokerClientInterceptor.java:176)
at org.springframework.remoting.httpinvoker.HttpInvokerClientInterceptor.invoke(HttpInvokerClientInterceptor.java:144)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy36.ping(Unknown Source)

有什么建议可以解决这个问题吗？

Answer 1

经过几天乏味的bug查找后，我们找到了一个解决方案:我们的构建服务器以另一种顺序加载文件，而不是本地maven，因此我们永远不能在本地重现bug。

我们的配置文件包括以下内容：

<mvc:default-servlet-handler/>

我们的构建服务器首先加载此配置文件，然后加载api-config-file。

解决方案是让我们的SimpleUrlHandler首先注册，给它一个非常低的顺序：

<bean id="apiUrlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
    <property name="order" value="-1" />
    <property name="mappings">
        <props>
            <prop key="/remoteapi/boat">boatEndpointExporter</prop>
        </props>
    </property>
</bean>