SAP在公网上提供了免费的开发测试用OData服务

SAP在公网上提供了免费的开发测试用OData服务 - ZGWSAMPLE_SRV 等。

比如 

https://sapes1.sapdevcenter.com/SAP/OPU/ODATA/IWFND/RMTSAMPLEFLIGHT/

http://sapes1.sapdevcenter.com:8080/SAP/OPU/ODATA/IWFND/RMTSAMPLEFLIGHT/

https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/

http://sapes1.sapdevcenter.com:8080/sap/opu/odata/sap/ZGWSAMPLE_SRV/

如何申请测试帐号：

1. 立即免费申请SAP Netweaver Gateway测试服务，浏览器访问SAP SCN网站
2. 如果没有SCN帐号，先申请一下。
3. 点击  follow this link to the sign up form 填写表格申请，系统自动立刻回复给你电子邮件，内有帐号口令。
4. 登录 https://sapes1.sapdevcenter.com/webgui 修改缺省口令
5. SCN网站 上有Flight Example服务的测试链接，比如  https://sapes1.sapdevcenter.com/SAP/OPU/ODATA/IWFND/RMTSAMPLEFLIGHT/

以ZGWSAMPLE_SRV为例，OData访问方法

Service Root,  Service Document，可以查看Collection, Entity的名字列表

https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/

Metadata信息，可以看到Entity的定义

https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/$metadata

导航
https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/BusinessPartnerCollection
https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/BusinessPartnerCollection('0100000000')
https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/BusinessPartnerCollection('0100000000')/SalesOrders
https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/SalesOrderCollection('0500000000')/LineItems
https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/SalesOrderLineItemCollection(SoItemPos='0000000010',SoId='0500000000')/Product


Get all business partners whose company name starts with the letter S.
  check xml item CompanyName
https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/BusinessPartnerCollection?$filter=startswith(CompanyName,'S')
select字段
https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/BusinessPartnerCollection?$select=BusinessPartnerID,CompanyName
复杂查询
https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/BusinessPartnerCollection?$filter=startswith(CompanyName,'SAP')&$select=BusinessPartnerID,CompanyName
排序
https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/BusinessPartnerCollection?$orderby=CompanyName
分页
https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/BusinessPartnerCollection?$top=2&$inlinecount=allpages&$select=BusinessPartnerID,CompanyName
https://sapes1.sapdevcenter.com/sap/opu/odata/sap/ZGWSAMPLE_SRV/BusinessPartnerCollection?$top=2&$inlinecount=allpages&$select=BusinessPartnerID,CompanyName&$skip=1

返回格式，加个参数 

$format=atom

$format=json

$format=xml