如何用Cloud项目模板在OData调用中设置“SAP-护照”标头

Question

我们将使用FRun (不支持CF)在support环境中收集一些静态信息。若要实现对传出连接调用的跟踪，请执行以下操作。我需要更新“SAP-护照”，并将其作为标题转发。

我遵循SAP的正式文档来实现它。https://help.sap.com/viewer/ea72206b834e4ace9cd834feed6c0e09/Cloud/en-US/05a07108d34540d39b8a79e2caf96c8c.html

在我看来，可以跳过步骤2。我唯一需要做的就是更新，并将其设置为request。

样本代码：

1.实现ConnectionInfo接口

public class ConnectionInfoNeo implements ConnectionInfo {

    @Override
    public byte[] getId() {

        UUID uuid = java.util.UUID.randomUUID();

        ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
        bb.putLong(uuid.getMostSignificantBits());
        bb.putLong(uuid.getLeastSignificantBits());

        return bb.array();
    }

    @Override
    public int getCounter() {
        return 1;
    }
}

1. 获取SapPassportHeader并将其设置为请求头

公共类LoggerFactory.getLogger(MyPurchaseOrderService.class)；{私有静态最终日志记录器= ctx.lookup("java:comp/env/connectivityConfiguration")；私有静态最终日志记录器=新ConnectionInfoNeo()；公共列表getPurchaseOrdersValueHelp(String purOrderStr)抛出NamingException { String destinationName = "ErpQueryEndpoint"；上下文ctx =新InitialContext()；logger.info(“上下文：”+ ctx)；// ConnectivityConfiguration配置= (ConnectivityConfiguration)// DestinationConfiguration destConfiguration =DestinationConfiguration // String destinationUrl = destConfiguration.getProperty("URL")；

SapPassportHeader sapPassportHeader = updateSapPassportHeader(ctx)；

DestinationAccessor.getDestination(destinationName).asHttp()；HttpDestination =HttpDestination List purchaseOrders = new DefaultPurchaseOrderService() .getAllPurchaseOrder() .withHeader(“SAP-2”，sapPassportHeader.getValue()) .filter(PurchaseOrder.PURCHASE_ORDER.startsWith(purOrderStr)) //..top(20).executeRequest(目的)；List purOrderNumList =新ArrayList<>()；purOrderNumList.add(purchaseOrder.getPurchaseOrder())；(purchaseOrder -> { sapPassportHeaderProvider.getSapPassportHeader(CONNECTION_INFO)；})；返回purOrderNumList；}私有SapPassportHeader updateSapPassportHeader(上下文ctx)抛出NamingException { SapPassportHeaderProvider sapPassportHeaderProvider = (SapPassportHeaderProvider) ctx.lookup("java:comp/env/SapPassportHeaderProvider")；返回sapPassportHeaderProvider.getSapPassportHeader(CONNECTION_INFO)；}

但是当我在Neo环境中测试时，我得到了一个例外。

2021 11 04 03:05:11#+00#ERROR#java.lang.Throwable##ZJE8SZH#https-jsse-nio-8041-exec-6#na#s3td7fnnd5#purchaseorderneoapplication#web#s3td7fnnd5#na#na#na#na#javax.naming.NameNotFoundException: Name [SapPassportHeaderProvider] is not bound in this Context. Unable to find [SapPassportHeaderProvider]. |
2021 11 04 03:05:11#+00#ERROR#java.lang.Throwable##ZJE8SZH#https-jsse-nio-8041-exec-6#na#s3td7fnnd5#purchaseorderneoapplication#web#s3td7fnnd5#na#na#na#na# at org.apache.naming.NamingContext.lookup(NamingContext.java:824) |
2021 11 04 03:05:11#+00#ERROR#java.lang.Throwable##ZJE8SZH#https-jsse-nio-8041-exec-6#na#s3td7fnnd5#purchaseorderneoapplication#web#s3td7fnnd5#na#na#na#na# at org.apache.naming.NamingContext.lookup(NamingContext.java:157) |
2021 11 04 03:05:11#+00#ERROR#java.lang.Throwable##ZJE8SZH#https-jsse-nio-8041-exec-6#na#s3td7fnnd5#purchaseorderneoapplication#web#s3td7fnnd5#na#na#na#na# at org.apache.naming.NamingContext.lookup(NamingContext.java:834) |
2021 11 04 03:05:11#+00#ERROR#java.lang.Throwable##ZJE8SZH#https-jsse-nio-8041-exec-6#na#s3td7fnnd5#purchaseorderneoapplication#web#s3td7fnnd5#na#na#na#na# at org.apache.naming.NamingContext.lookup(NamingContext.java:157) |
2021 11 04 03:05:11#+00#ERROR#java.lang.Throwable##ZJE8SZH#https-jsse-nio-8041-exec-6#na#s3td7fnnd5#purchaseorderneoapplication#web#s3td7fnnd5#na#na#na#na# at org.apache.naming.NamingContext.lookup(NamingContext.java:834) |
2021 11 04 03:05:11#+00#ERROR#java.lang.Throwable##ZJE8SZH#https-jsse-nio-8041-exec-6#na#s3td7fnnd5#purchaseorderneoapplication#web#s3td7fnnd5#na#na#na#na# at org.apache.naming.NamingContext.lookup(NamingContext.java:171) |
2021 11 04 03:05:11#+00#ERROR#java.lang.Throwable##ZJE8SZH#https-jsse-nio-8041-exec-6#na#s3td7fnnd5#purchaseorderneoapplication#web#s3td7fnnd5#na#na#na#na# at org.apache.naming.SelectorContext.lookup(SelectorContext.java:161) |
2021 11 04 03:05:11#+00#ERROR#java.lang.Throwable##ZJE8SZH#https-jsse-nio-8041-exec-6#na#s3td7fnnd5#purchaseorderneoapplication#web#s3td7fnnd5

#na#na#na#na#   at javax.naming.InitialContext.lookup(InitialContext.java:417) |

如何在JNDI中注册SapPassportHeaderProvider？有什么简单的方法可以在Cloud中为Java7项目获取标头吗？

================================================================

我在web.xml中添加了一些资源配置。上述问题已得到解决。但是SAP护照头始终为空。

<resource-ref>
        <res-ref-name>connectivityConfiguration</res-ref-name>
        <res-type>com.sap.core.connectivity.api.configuration.ConnectivityConfiguration</res-type>
    </resource-ref>

    <resource-ref>
        <res-ref-name>SapPassportHeaderProvider</res-ref-name>
        <res-type>com.sap.core.connectivity.api.sappassport.SapPassportHeaderProvider</res-type>
    </resource-ref>

2021 11 04 04:14:58#+00#ERROR#org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/PurchaseOrderNeo-application].[com.bosch.sbs.po.servet.PurchaseOrderValueHelpServlet]##ZJE8SZH#https-jsse-nio-8041-exec-7#na#s3td7fnnd5#purchaseorderneoapplication#web#s3td7fnnd5#na#na#na#na#Servlet.service() for servlet [com.bosch.sbs.po.servet.PurchaseOrderValueHelpServlet] in context with path [/PurchaseOrderNeo-application] threw exception com.sap.cloud.sdk.cloudplatform.exception.ShouldNotHappenException: com.sap.cloud.sdk.cloudplatform.thread.exception.ThreadContextExecutionException: java.lang.NullPointerException: while trying to invoke the method com.sap.core.connectivity.api.sappassport.SapPassportHeader.getValue() of a null object loaded from local variable 'sapPassportHeader'

=========================================================================

​

Answer 1

既然你用sap-cloud-sdk标记了你的问题，我就代表图书馆回答。

它独立于SAP官方文档提供的API。您只需将SAP内部依赖项com.sap.cloud.sdk.cloudplatform:sap-passport添加到项目中即可。只要使用目标API，相应的标头就会自动添加到传出请求中。