关于partnerLinkType的相关实验
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关于partnerLinkType的相关实验
1 将partnerLinkType的定义放到bpel定义当中去
以Loan Approval为例，理想情况下partnerLinkType的定义应该放到相关服务的WSDL文件中定义，如下所示：
<wsdl:definitions
targetNamespace="http://example.com/loan-approval/wsdl/"
xmlns:ens="http://example.com/loan-approval/xsd/error-messages/"
xmlns:plnk="http://docs.oasis-open.org/wsbpel/2.0/plnktype"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:tns="http://example.com/loan-approval/wsdl/"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<wsdl:types>
……………………………………..
</wsdl:types>
<wsdl:message name="creditInformationMessage">
……………………………………..
</wsdl:message>
……………………………………..
……………………………………..
<wsdl:portType name="loanServicePT">
……………………………………..
</wsdl:portType>
……………………………………..
……………………………………..
<wsdl:binding name="SOAPBinding" type="tns:loanApprovalPT">
……………………………………..
</wsdl:binding>
<wsdl:service name="LoanApprover">
……………………………………..
</wsdl:service>
<plnk:partnerLinkType name="loanPartnerLT">
<plnk:role name="loanService" portType="tns:loanServicePT" />
</plnk:partnerLinkType>
<plnk:partnerLinkType name="loanApprovalLT">
<plnk:role name="approver" portType="tns:loanApprovalPT" />
</plnk:partnerLinkType>
<plnk:partnerLinkType name="riskAssessmentLT">
<plnk:role name="assessor" portType="tns:riskAssessmentPT" />
</plnk:partnerLinkType>
</wsdl:definitions>
将partnerLinkType的相关定义放到BPEL代码中，并修改相应wsdl和bpel文件的名称空间。bpel代码修改后如下：
<?xml version="1.0" encoding="UTF-8"?>
<bpel:process
xmlns:bpel="http://docs.oasis-open.org/wsbpel/2.0/process/executable"
xmlns:lns="http://example.com/loan-approval/wsdl/"
xmlns:plnk="http://docs.oasis-open.org/wsbpel/2.0/plnktype"
xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="loan_approval" suppressJoinFailure="yes"
targetNamespace="http://loan_approval">
<bpel:import importType="http://schemas.xmlsoap.org/wsdl/"
location="WSDL/loanServicePT.wsdl" namespace="http://example.com/loan-approval/wsdl/"/>
<plnk:partnerLinkType name="loanPartnerLT">
<plnk:role name="loanService" portType="lns:loanServicePT"/>
</plnk:partnerLinkType>
<plnk:partnerLinkType name="loanApprovalLT">
<plnk:role name="approver" portType="lns:loanApprovalPT"/>
</plnk:partnerLinkType>
<plnk:partnerLinkType name="riskAssessmentLT">
<plnk:role name="assessor" portType="lns:riskAssessmentPT"/>
</plnk:partnerLinkType>
<bpel:partnerLinks>
<bpel:partnerLink myRole="loanService" name="customer" partnerLinkType="loanPartnerLT"/>
<bpel:partnerLink name="assessor" partnerLinkType="riskAssessmentLT" partnerRole="assessor"/>
<bpel:partnerLink name="approver" partnerLinkType="loanApprovalLT" partnerRole="approver"/>
</bpel:partnerLinks>
<bpel:variables>
……………………………………..
</bpel:variables>
<bpel:faultHandlers>
……………………………………..
</bpel:faultHandlers>
<bpel:flow>
……………………………………..
……………………………………..
</bpel:flow>
</bpel:process>
将修改后的wsdl和bpel文件，以及之前的pdd文件一齐打包为bpr文件，部署到BPEL引擎上运行，部署时错误信息如下：
信息: [tutorial.bpr] Starting ActiveBPEL deployment.
2007-11-20 22:09:18 org.activebpel.rt.axis.bpel.web.AeProcessEngineServlet$AeTom
catLogger logError
严重: [tutorial.bpr] META-INF\pdd\Loan_Approval\loan_approval.pdd failed deploym
ent validation. See deployment log.
2007-11-20 22:09:18 org.activebpel.rt.AeException logError
严重: META-INF\pdd\Loan_Approval\loan_approval.pdd failed deployment validation.
See deployment log.
2007-11-20 22:09:18 org.activebpel.rt.axis.bpel.web.AeProcessEngineServlet$AeTom
catLogger logInfo
信息: [tutorial.bpr] Finished ActiveBPEL deployment.
2007-11-20 22:09:18 org.activebpel.rt.axis.bpel.web.AeProcessEngineServlet$AeTom
catLogger logInfo
信息: ********** ActiveBPEL In-Memory Configuration Started
在引擎控制台查看部署日志如下：
11/20/2007 10:09:18:281 [tutorial.bpr] [error-messages.xsd] Added resource mapped to location hint: project:/Loan_Approval/WSDL/error-messages.xsd
11/20/2007 10:09:18:281 [tutorial.bpr] [loanServicePT.wsdl] Added resource mapped to location hint: project:/Loan_Approval/WSDL/loanServicePT.wsdl
11/20/2007 10:09:18:609 [tutorial.bpr] [loan_approval.pdd] Fault name lns:unableToHandleRequest can not be found.: in META-INF\pdd\Loan_Approval\loan_approval.pdd
11/20/2007 10:09:18:640 [tutorial.bpr] [loan_approval.pdd] Extension with namespace 'http://docs.oasis-open.org/wsbpel/2.0/plnktype' is not declared.: in META-INF\pdd\Loan_Approval\loan_approval.pdd
11/20/2007 10:09:18:640 [tutorial.bpr] [loan_approval.pdd] Extension with namespace 'http://docs.oasis-open.org/wsbpel/2.0/plnktype' is not declared.: in META-INF\pdd\Loan_Approval\loan_approval.pdd
11/20/2007 10:09:18:640 [tutorial.bpr] [loan_approval.pdd] Extension with namespace 'http://docs.oasis-open.org/wsbpel/2.0/plnktype' is not declared.: in META-INF\pdd\Loan_Approval\loan_approval.pdd
11/20/2007 10:09:18:640 [tutorial.bpr] [loan_approval.pdd] Partner Link Type {no namespace}:loanPartnerLT can not be found.: in META-INF\pdd\Loan_Approval\loan_approval.pdd
11/20/2007 10:09:18:640 [tutorial.bpr] [loan_approval.pdd] Partner Link Type {no namespace}:riskAssessmentLT can not be found.: in META-INF\pdd\Loan_Approval\loan_approval.pdd
11/20/2007 10:09:18:640 [tutorial.bpr] [loan_approval.pdd] Partner Link Type {no namespace}:loanApprovalLT can not be found.: in META-INF\pdd\Loan_Approval\loan_approval.pdd
原因分析：
我们使用的ActiveBPEL引擎执行时对bpr包（流程部署包）的处理首先是从相应wsdl文件中查找partnerLinkType的定义，然后解析pdd（部署描述文件，流程引擎特有，非标准），最后处理bpel文件。
使用wsdl包装方式
新建一个名为wrapper的wsdl文件，导入之前的wsdl文件，最后添加相应的bpel扩展。作为包装器的wsdl内容如下：
<wsdl:definitions
targetNamespace="http://example.com/loan-approval/wsdl/wrapper"
xmlns:plnk="http://docs.oasis-open.org/wsbpel/2.0/plnktype"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
xmlns:loan="http://example.com/loan-approval/wsdl/">
<wsdl:import namespace="http://example.com/loan-approval/wsdl/" location="loanServicePT.wsdl"/>
<plnk:partnerLinkType name="loanPartnerLT">
<plnk:role name="loanService" portType="loan:loanServicePT"/>
</plnk:partnerLinkType>
<plnk:partnerLinkType name="loanApprovalLT">
<plnk:role name="approver" portType="loan:loanApprovalPT"/>
</plnk:partnerLinkType>
<plnk:partnerLinkType name="riskAssessmentLT">
<plnk:role name="assessor" portType="loan:riskAssessmentPT"/>
</plnk:partnerLinkType>
</wsdl:definitions>
对bpel文件进行相应的修改，将最新的wrapper.wsdl文件引入。
<?xml version="1.0" encoding="UTF-8"?>
<bpel:process
xmlns:bpel="http://docs.oasis-open.org/wsbpel/2.0/process/executable"
xmlns:loan="http://example.com/loan-approval/wsdl/"
xmlns:lns="http://example.com/loan-approval/wsdl/wrapper"
xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="loan_approval" suppressJoinFailure="yes"
targetNamespace="http://loan_approval">
<bpel:import
importType="http://schemas.xmlsoap.org/wsdl/"
location="WSDL/wrapper.wsdl" namespace="http://example.com/loan-approval/wsdl/wrapper"/>
<bpel:partnerLinks>
<bpel:partnerLink myRole="loanService" name="customer" partnerLinkType="lns:loanPartnerLT"/>
<bpel:partnerLink name="assessor" partnerLinkType="lns:riskAssessmentLT" partnerRole="assessor"/>
<bpel:partnerLink name="approver" partnerLinkType="lns:loanApprovalLT" partnerRole="approver"/>
</bpel:partnerLinks>
<bpel:variables>
<bpel:variable messageType="loan:creditInformationMessage" name="request"/>
<bpel:variable messageType="loan:approvalMessage" name="approval"/>
<bpel:variable messageType="loan:riskAssessmentMessage" name="risk"/>
</bpel:variables>
<bpel:faultHandlers>
……………………………………..
</bpel:faultHandlers>
<bpel:flow>
……………………………………..
</bpel:flow>
</bpel:process>
修改相应的pdd文件和catalog.xml文件（引擎特定文件，非标准）
pdd文件修改如下：
<?xml version="1.0" encoding="UTF-8"?>
<process xmlns="http://schemas.active-endpoints.com/pdd/2006/08/pdd.xsd"
xmlns:bpelns="http://loan_approval"
xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/addressing"
location="bpel/Loan_Approval/loan_approval.bpel" name="bpelns:loan_approval" persistenceType="none">
<partnerLinks>
<partnerLink name="approver">
<partnerRole endpointReference="static">
<wsa:EndpointReference xmlns:s="http://example.com/loan-approval/wsdl/" xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/addressing">
<wsa:Address>http://localhost:8080/active-bpel/services/ApproverWebService</wsa:Address>
<wsa:ServiceName PortName="SOAPPort">s:LoanApprover</wsa:ServiceName>
</wsa:EndpointReference>
</partnerRole>
</partnerLink>
<partnerLink name="assessor">
<partnerRole endpointReference="static">
<wsa:EndpointReference
xmlns:s="http://example.com/loan-approval/wsdl/"
xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/addressing">
<wsa:Address>http://localhost:8080/active-bpel/services/AssessorWebService</wsa:Address>
<wsa:ServiceName PortName="SOAPPort1">s:LoanAssessor</wsa:ServiceName>
</wsa:EndpointReference>
</partnerRole>
</partnerLink>
<partnerLink name="customer">
<myRole allowedRoles="" binding="RPC" service="LoanService"/>
</partnerLink>
</partnerLinks>
<references>
<wsdl
location="project:/Loan_Approval/WSDL/wrapper.wsdl"
namespace="http://example.com/loan-approval/wsdl/wrapper"/>
<wsdl
location="project:/Loan_Approval/WSDL/loanServicePT.wsdl"
namespace="http://example.com/loan-approval/wsdl/"/>
</references>
</process>
catalog.xml文件修改如下：
<?xml version="1.0" encoding="UTF-8"?>
<catalog xmlns='http://schemas.active-endpoints.com/catalog/2006/07/catalog.xsd'>
<wsdlEntry
location="project:/Loan_Approval/WSDL/loanServicePT.wsdl"
classpath="wsdl/Loan_Approval/WSDL/loanServicePT.wsdl" />
<wsdlEntry
location="project:/Loan_Approval/WSDL/wrapper.wsdl"
classpath="wsdl/Loan_Approval/WSDL/wrapper.wsdl" />
<schemaEntry
location="project:/Loan_Approval/WSDL/error-messages.xsd"
classpath="wsdl/Loan_Approval/WSDL/error-messages.xsd" />
</catalog>
重新打包，部署到bpel引擎上，一切正常，实验成功。
关于PDD
A Process Deployment Descriptor (.pdd) file describes the relationship between the partner links defined in the BPEL file and the implementation required to interact with actual partner endpoints. You create a .pdd file to indicate where your
endpoint references are. The .pdd file is an integral part of the deployment package for the process.
使用wsdl包装方式，通过url引用第三方服务wsdl文件
首先将第三方服务的wsdl放到一台Web服务器上面，支持http访问。
<!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"> <v:stroke joinstyle="miter" /> <v:formulas> <v:f eqn="if lineDrawn pixelLineWidth 0" /> <v:f eqn="sum @0 1 0" /> <v:f eqn="sum 0 0 @1" /> <v:f eqn="prod @2 1 2" /> <v:f eqn="prod @3 21600 pixelWidth" /> <v:f eqn="prod @3 21600 pixelHeight" /> <v:f eqn="sum @0 0 1" /> <v:f eqn="prod @6 1 2" /> <v:f eqn="prod @7 21600 pixelWidth" /> <v:f eqn="sum @8 21600 0" /> <v:f eqn="prod @7 21600 pixelHeight" /> <v:f eqn="sum @10 21600 0" /> </v:formulas> <v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect" /> <o:lock v:ext="edit" aspectratio="t" /> </v:shapetype><v:shape id="_x0000_i1025" type="#_x0000_t75" style='width:522.75pt; height:224.25pt'> <v:imagedata src="file:///d:\Temp\msohtmlclip1\01\clip_image001.png" o:title="" /> </v:shape><![endif]--><!--[if !vml]-->wsdl文件的url为：http://10.3.5.37/loanServicePT.wsdl
修改本地相应的包装作用的wsdl文件wrapper.wsdl如下：
<wsdl:definitions
targetNamespace="http://example.com/loan-approval/wsdl/wrapper"
xmlns:plnk="http://docs.oasis-open.org/wsbpel/2.0/plnktype"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
xmlns:loan="http://example.com/loan-approval/wsdl/">
<wsdl:import
namespace="http://example.com/loan-approval/wsdl/" location="http://10.3.5.37/loanServicePT.wsdl"/>
<plnk:partnerLinkType name="loanPartnerLT">
<plnk:role name="loanService" portType="loan:loanServicePT"/>
</plnk:partnerLinkType>
<plnk:partnerLinkType name="loanApprovalLT">
<plnk:role name="approver" portType="loan:loanApprovalPT"/>
</plnk:partnerLinkType>
<plnk:partnerLinkType name="riskAssessmentLT">
<plnk:role name="assessor" portType="loan:riskAssessmentPT"/>
</plnk:partnerLinkType>
</wsdl:definitions
修改之前的pdd文件和catalog.xml文件如下：
pdd文件：
<?xml version="1.0" encoding="UTF-8"?>
<process xmlns="http://schemas.active-endpoints.com/pdd/2006/08/pdd.xsd" xmlns:bpelns="http://loan_approval" xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/addressing" location="bpel/Loan_Approval/loan_approval.bpel" name="bpelns:loan_approval" persistenceType="none">
<partnerLinks>
<partnerLink name="approver">
<partnerRole endpointReference="static">
<wsa:EndpointReference xmlns:s="http://example.com/loan-approval/wsdl/" xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/addressing">
<wsa:Address>http://localhost:8080/active-bpel/services/ApproverWebService</wsa:Address>
<wsa:ServiceName PortName="SOAPPort">s:LoanApprover</wsa:ServiceName>
</wsa:EndpointReference>
</partnerRole>
</partnerLink>
<partnerLink name="assessor">
<partnerRole endpointReference="static">
<wsa:EndpointReference xmlns:s="http://example.com/loan-approval/wsdl/" xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/addressing">
<wsa:Address>http://localhost:8080/active-bpel/services/AssessorWebService</wsa:Address>
<wsa:ServiceName PortName="SOAPPort1">s:LoanAssessor</wsa:ServiceName>
</wsa:EndpointReference>
</partnerRole>
</partnerLink>
<partnerLink name="customer">
<myRole allowedRoles="" binding="RPC" service="LoanService"/>
</partnerLink>
</partnerLinks>
<references>
<wsdl
location="project:/Loan_Approval/WSDL/wrapper.wsdl"
namespace="http://example.com/loan-approval/wsdl/wrapper"/>
<wsdl
location="http://10.3.5.37/loanServicePT.wsdl"
namespace="http://example.com/loan-approval/wsdl/"/>
</references>
</process>
catalog.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<catalog xmlns='http://schemas.active-endpoints.com/catalog/2006/07/catalog.xsd'>
<wsdlEntry location="http://10.3.5.37/loanServicePT.wsdl" classpath="http://10.3.5.37/loanServicePT.wsdl" />
<wsdlEntry
location="project:/Loan_Approval/WSDL/wrapper.wsdl"
classpath="wsdl/Loan_Approval/WSDL/wrapper.wsdl" />
<schemaEntry
location="project:/Loan_Approval/WSDL/error-messages.xsd"
classpath="wsdl/Loan_Approval/WSDL/error-messages.xsd" />
</catalog>
然后将组合服务重新打包，部署到bpel引擎上，控制台部署日志报错如下：
11/25/2007 09:23:45:359 [tutorial.bpr] http://10.3.5.37/loanServicePT.wsdl could not be found in /f:/Apache Software Foundation/Tomcat 5.5/bpr/tutorial.bpr - please check your catalog descriptor (catalog.xml or wsdlCatalog.xml)
11/25/2007 09:23:45:375 [tutorial.bpr] Encountered unexpected deployment error. See previous messages for /f:/Apache Software Foundation/Tomcat 5.5/bpr/tutorial.bpr.
分析原因:BPEL引擎无法按照所提供的location找到相应的wsdl文件。
由于pdd和catalog.xml为自己手动修改，所以无法判断地址定义格式是否符合正确，所以考虑通过官方的ActiveBPEL Designer实现外部引用wsdl，根据官方设计器生成相应的pdd和catalog.xml来逆向分析。
还是以现有的贷款流程设计为例，在ActiveBPEL Designer下导入外部wsdl时出现问题：
<!--[if gte vml 1]><v:shape id="_x0000_i1026" type="#_x0000_t75" style='width:498.75pt;height:239.25pt'> <v:imagedata src="file:///d:\Temp\msohtmlclip1\01\clip_image003.png" o:title="" /> </v:shape><![endif]--><!--[if !vml]--><!--[endif]-->
点击OK时会报如下的错误：
<!--[if gte vml 1]><v:shape id="_x0000_i1027" type="#_x0000_t75" style='width:330.75pt;height:108pt'> <v:imagedata src="file:///d:\Temp\msohtmlclip1\01\clip_image005.png" o:title="" /> </v:shape><![endif]--><!--[if !vml]--><!--[endif]-->
这个提示并非是找不到wsdl，因为如果找不到，相应的情况应该为：
<!--[if gte vml 1]><v:shape id="_x0000_i1028" type="#_x0000_t75" style='width:330.75pt;height:108pt'> <v:imagedata src="file:///d:\Temp\msohtmlclip1\01\clip_image007.png" o:title="" /> </v:shape><![endif]--><!--[if !vml]--><!--[endif]-->
但如果我导入一个Internet上第三方提供可以访问的wsdl文件，例如http://services.aonaware.com/DictService/提供了一个字典查询的服务，它的wsdl文件路径为http://services.aonaware.com/DictService/DictService.asmx?WSDL，结果可以正常的导入，结果如下：
<!--[if gte vml 1]><v:shape id="_x0000_i1029" type="#_x0000_t75" style='width:498.75pt;height:239.25pt'> <v:imagedata src="file:///d:\Temp\msohtmlclip1\01\clip_image009.png" o:title="" /> </v:shape><![endif]--><!--[if !vml]--><!--[endif]-->
<!--[if gte vml 1]><v:shape id="_x0000_i1030" type="#_x0000_t75" style='width:522.75pt;height:391.5pt'> <v:imagedata src="file:///d:\Temp\msohtmlclip1\01\clip_image011.png" o:title="" /> </v:shape><![endif]--><!--[if !vml]--><!--[endif]-->
DictService服务本身没有包含partnerLinkType的定义，对于这种情况，ActiveBPEL Deigner提供了BPEL扩展功能，大致操作如下：
选择相应WSDL中PortType定义中相应的Operation操作，将其拖拽到BPEL设计器上面，将自动激活Partner Link Type导航窗口，界面如下：
<!--[if gte vml 1]><v:shape id="_x0000_i1031" type="#_x0000_t75" style='width:432.75pt;height:366pt'> <v:imagedata src="file:///d:\Temp\msohtmlclip1\01\clip_image013.png" o:title="" /> </v:shape><![endif]--><!--[if !vml]--><!--[endif]-->
<!--[if gte vml 1]><v:shape id="_x0000_i1032" type="#_x0000_t75" style='width:432.75pt;height:366pt'> <v:imagedata src="file:///d:\Temp\msohtmlclip1\01\clip_image015.png" o:title="" /> </v:shape><![endif]--><!--[if !vml]--><!--[endif]-->
点击Finish后将自动新建一个wsdl文件，包装有最初的原始wsdl文件。
新的wsdl文件内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions name="wrapper"
targetNamespace="http://www.jssoa.com/DictService"
xmlns:tns="http://www.jssoa.com/DictService"
xmlns:ns1="http://services.aonaware.com/webservices/"
xmlns:plnk="http://schemas.xmlsoap.org/ws/2003/05/partner-link/"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
<plnk:partnerLinkType xmlns:plnk="http://docs.oasis-open.org/wsbpel/2.0/plnktype" name="DictSeverInformation">
<plnk:role name="GetServerInfo" portType="ns1:DictServiceHttpPost"/>
</plnk:partnerLinkType>
<wsdl:import
namespace="http://services.aonaware.com/webservices/"
location="http://services.aonaware.com/DictService/DictService.asmx?WSDL"/>
</wsdl:definitions>
(PS 这里有比较严重的bug，如果想再次添加一个新的partnerLinkType的话，之前的拖拽操作将没有响应，必须重启ActiveBPEL Designer程序后方可再次定义)
如果将这个第三方服务，用我们之前的方式导入到Web Reference里面，结果是成功的，具体过程如下：
将第三方服务的wsdl文件从http://services.aonaware.com/DictService/DictService.asmx?WSDL地址获得，保存到本地，命名为DictService.wsdl文件，放置到服务器上，支持http访问，还是按照之前的方式导入设计器中，结果如下：
<!--[if gte vml 1]><v:shape id="_x0000_i1033" type="#_x0000_t75" style='width:498.75pt;height:239.25pt'> <v:imagedata src="file:///d:\Temp\msohtmlclip1\01\clip_image017.png" o:title="" /> </v:shape><![endif]--><!--[if !vml]--><!--[endif]-->
点击OK后，成功导入
<!--[if gte vml 1]><v:shape id="_x0000_i1034" type="#_x0000_t75" style='width:522.75pt;height:391.5pt'> <v:imagedata src="file:///d:\Temp\msohtmlclip1\01\clip_image019.png" o:title="" /> </v:shape><![endif]--><!--[if !vml]--><!--[endif]-->
实验证明我们之前的贷款服务的wsdl不被设计器所“接受”，而那个wsdl文件本身是正确的，因为之前我们的流程部署和执行都是成功的。
分析比较两个wsdl文件，终于找到问题发生的原因，是因为之前的贷款服务的wsdl文件中引用了一个xsd文件用来定义Web服务错误信息，由于wsdl文件路径的变化，之前的xsd文件路径已经无法被当前wsdl所访问，需要同步修改该xsd路径如下：
<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions………………………………>
<wsdl:types>
<xsd:schema elementFormDefault="qualified">
<xsd:import
namespace="http://example.com/loan-approval/xsd/error-messages/"
schemaLocation="http://10.3.5.38/error-messages.xsd" />
</xsd:schema>
</wsdl:types>
………………………………
这里我将xsd同wsdl放置到服务器同一目录下，再次实验，顺利导入。然后我就可以尝试通过本地包装远程wsdl文件的方式实现partnerLinkType定义，在此基础上实现流程的设计
通过之前的方式，在ActiveBPEL Designer中对贷款服务的wsdl实现BPEL扩展，本地生成的wrapper.wsdl文件内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions name="wrapper"
targetNamespace="http://example.com/loan-approval/wsdl/wrapper"
xmlns:tns="http://example.com/loan-approval/wsdl/wrapper"
xmlns:ns1="http://example.com/loan-approval/wsdl/"
xmlns:plnk="http://schemas.xmlsoap.org/ws/2003/05/partner-link/"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
<plnk:partnerLinkType xmlns:plnk="http://docs.oasis-open.org/wsbpel/2.0/plnktype" name="loanPartnerLT">
<plnk:role name="loanService" portType="ns1:loanServicePT"/>
</plnk:partnerLinkType>
<plnk:partnerLinkType xmlns:plnk="http://docs.oasis-open.org/wsbpel/2.0/plnktype" name="loanApprovalLT">
<plnk:role name="approver" portType="ns1:loanApprovalPT"/>
</plnk:partnerLinkType>
<plnk:partnerLinkType xmlns:plnk="http://docs.oasis-open.org/wsbpel/2.0/plnktype" name="riskAssessmentLT">
<plnk:role name="assessor" portType="ns1:riskAssessmentPT"/>
</plnk:partnerLinkType>
<wsdl:import
namespace="http://example.com/loan-approval/wsdl/" location="http://10.3.5.38/loanServicePT.wsdl"/>
</wsdl:definitions>
实验成功
但分析设计器生成的pdd文件，可以看出与先前的实现方式生成的pdd文件有较大的区别：
新生成的pdd文件内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<process
xmlns="http://schemas.active-endpoints.com/pdd/2006/08/pdd.xsd"
xmlns:bpelns="http://www.jssoa.com/loan_approval"
xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/addressing"
location="bpel/Loan_Approval_Remote/loan_approval.bpel" name="bpelns:loan_approval" persistenceType="full">
<partnerLinks>
<partnerLink name="approver">
<partnerRole endpointReference="static">
<wsa:EndpointReference
xmlns:s="FILL_IN_NAMESPACE" xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/addressing">
<wsa:Address>FILL_IN_ADDRESS_URI</wsa:Address>
<wsa:ServiceName PortName="FILL_IN_PORT_NAME">s:FILL_IN_SERVICE_NAME</wsa:ServiceName>
</wsa:EndpointReference>
</partnerRole>
</partnerLink>
<partnerLink name="assessor">
<partnerRole endpointReference="static">
<wsa:EndpointReference
xmlns:s="FILL_IN_NAMESPACE" xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/addressing">
<wsa:Address>FILL_IN_ADDRESS_URI</wsa:Address>
<wsa:ServiceName PortName="FILL_IN_PORT_NAME">s:FILL_IN_SERVICE_NAME</wsa:ServiceName>
</wsa:EndpointReference>
</partnerRole>
</partnerLink>
<partnerLink name="customer">
<myRole allowedRoles="" binding="RPC" service="customerService"/>
</partnerLink>
</partnerLinks>
<references>
<wsdl location="http://10.3.5.37/loanServicePT.wsdl" namespace="http://example.com/loan-approval/wsdl/"/>
<wsdl
location="project:/Loan_Approval_Remote/wsdl/wrapper.wsdl"
namespace="http://example.com/loan-approval/wsdl/wrapper"/>
</references>
</process>
</process>
为了便于我们自己的BPEL设计器实现，尝试将最新生成的pdd进行静态转换，对每个partnerLink元素做如下操作：
<!--[if !supportLists]-->l <!--[endif]-->将FILL_IN_NAMESPACE替换为partnerLink相关服务的WSDL文件的目标名空间（target namespace）；
<!--[if !supportLists]-->l <!--[endif]-->将FILL_IN_ADDRESS_URI替换为WSDL文件中<service>元素相应服务URI