【dinghao】delphi对.net2.0webservice封装问题
delphi调用WebService一直发生500错误，可是同样的Service用.net调用，xmlspy调用都没有问题。因此估计Delphi对Service的封装有问题。
跟踪发现：竟然没有参数传递给Webservice，参数或者是null或者是初始值。通过查看Post的数据包：
xml version="1.0"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xm
lns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XML
Schema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encodin
g/" xmlns:NS2="http://microsoft.com/wsdl/types/">
<NS1:GetServiceInfo xmlns:NS1="http://goldentek.biz/">
<passport xsi:type="xsd:string">xxx@im.chinabubble.compassport>
<oem xsi:type="NS2:guid">{xxxxxxxx-8456-550a-8bb9-65d484f8bc3b}oem>
<codePage xsi:type="xsd:int">936codePage>
NS1:GetServiceInfo>
SOAP-ENV:Body>
SOAP-ENV:Envelope>
发现以下部分不正确：
<NS1:GetServiceInfo xmlns:NS1="http://goldentek.biz/">
<passport xsi:type="xsd:string">monkeyking@im.chinabubble.compassport>
<oem xsi:type="NS2:guid">{341a4fbb-8456-550a-8bb9-65d484f8bc3b}oem>
<codePage xsi:type="xsd:int">936codePage>
NS1:GetServiceInfo>
问题已经确定是Delphi的封装问题。进一步测试发现，在2005下的Service，如果有参数delphi都不能正确封装。难道只有把服务转到2003？或者自己封装Webservie调用？这两个方法都要很多工作量。
下面先看一下2003和2005生成的wsdl的不同点（完整wsdl看附录）：
1、2005增加了对soap1.2的支持
2、2005如果没有描述会没有<documentation xmlns="http://schemas.xmlsoap.org/wsdl/" /> 标记。
3、2005没有显式设置styly，而采用的是默认值 <soap12:binding transport="http://schemas.xmlsoap.org/soap/http" />
第二个可以排除，它不会产生这样的错误，最有可能的是第一条，delphi对soap1.2支持不好。而且发现：“User-Agent: Borland SOAP 1.2”，证明delphi确实用的是Soap1.2。手动修改Wsdl，去掉对1.2的支持重新生成代理类，测试扔出现问题。
是第三个？可是省略style也是符合wsdl规范的。修改wsdl加上style，测试成功。真是没有想到会是这里的问题，修改起来竟是如此简单！
后面还发现delphi不能正确解析nil如：
总结：
可以看出delphi对webservie的封装还是很有问题的，规范都没有实现！对xml的支持也不完善。
因此在webservice的开发中不要用高级的特性，因为某些语言对service的封装还是不好。
还真是怀疑wse的前途，还是因为某些语言调用起来很麻烦。
附：
正确的Post格式
1、
xml version="1.0"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xm
lns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XML
Schema-instance">
<SOAP-ENV:Body>
<GetServiceInfo xmlns="http://goldentek.biz/">
<passport>xxxxx@im.chinabubble.compassport>
<oem>{xxxxxxxx-8456-550a-8bb9-65d484f8bc3b}oem>
<codePage>936codePage>
GetServiceInfo>
SOAP-ENV:Body>
SOAP-ENV:Envelope>
2、
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<SOAP-ENV:Body>
<m:GetServiceInfo xmlns:m="http://goldentek.biz/">
<m:passport>monkeyking@im.chinabubble.comm:passport>
<m:oem>341a4fbb-8456-550a-8bb9-65d484f8bc3bm:oem>
<m:codePage>936m:codePage>
m:GetServiceInfo>
SOAP-ENV:Body>
SOAP-ENV:Envelope>
<!--
Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/
--> [WebMethod]
public string HelloWorld(string s) {
string t = s;
return "Hello World";
}
<!--
Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/
--> xml version="1.0" encoding="utf-8" ?>
- <wsdl:definitions xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tns="http://tempuri.org/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" targetNamespace="http://tempuri.org/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
- <wsdl:types>
- <s:schema elementFormDefault="qualified" targetNamespace="http://tempuri.org/">
- <s:element name="HelloWorld">
- <s:complexType>
- <s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="s" type="s:string" />
s:sequence>
s:complexType>
s:element>
- <s:element name="HelloWorldResponse">
- <s:complexType>
- <s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="HelloWorldResult" type="s:string" />
s:sequence>
s:complexType>
s:element>
s:schema>
wsdl:types>
- <wsdl:message name="HelloWorldSoapIn">
<wsdl:part name="parameters" element="tns:HelloWorld" />
wsdl:message>
- <wsdl:message name="HelloWorldSoapOut">
<wsdl:part name="parameters" element="tns:HelloWorldResponse" />
wsdl:message>
- <wsdl:portType name="Service1Soap">
- <wsdl:operation name="HelloWorld">
<wsdl:input message="tns:HelloWorldSoapIn" />
<wsdl:output message="tns:HelloWorldSoapOut" />
wsdl:operation>
wsdl:portType>
- <wsdl:binding name="Service1Soap" type="tns:Service1Soap">
<soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" />
+ <wsdl:operation name="HelloWorld">
<soap:operation soapAction="http://tempuri.org/HelloWorld" style="document" />
- <wsdl:input>
<soap:body use="literal" />
wsdl:input>
- <wsdl:output>
<soap:body use="literal" />
wsdl:output>
wsdl:operation>
wsdl:binding>
- <wsdl:service name="Service1">
<documentation xmlns="http://schemas.xmlsoap.org/wsdl/" />
- <wsdl:port name="Service1Soap" binding="tns:Service1Soap">
<soap:address location="http://localhost/WebService1/Service1.asmx" />
wsdl:port>
wsdl:service>
wsdl:definitions>
<!--
Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/
--> xml version="1.0" encoding="utf-8" ?>
- <wsdl:definitions xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:tns="http://tempuri.org/" xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" targetNamespace="http://tempuri.org/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
- <wsdl:types>
- <s:schema elementFormDefault="qualified" targetNamespace="http://tempuri.org/">
- <s:element name="HelloWorld">
- <s:complexType>
- <s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="s" type="s:string" />
s:sequence>
s:complexType>
s:element>
- <s:element name="HelloWorldResponse">
- <s:complexType>
- <s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="HelloWorldResult" type="s:string" />
s:sequence>
s:complexType>
s:element>
s:schema>
wsdl:types>
- <wsdl:message name="HelloWorldSoapIn">
<wsdl:part name="parameters" element="tns:HelloWorld" />
wsdl:message>
- <wsdl:message name="HelloWorldSoapOut">
<wsdl:part name="parameters" element="tns:HelloWorldResponse" />
wsdl:message>
- <wsdl:portType name="ServiceSoap">
- <wsdl:operation name="HelloWorld">
<wsdl:input message="tns:HelloWorldSoapIn" />
<wsdl:output message="tns:HelloWorldSoapOut" />
wsdl:operation>
wsdl:portType>
- <wsdl:binding name="ServiceSoap" type="tns:ServiceSoap">
<soap:binding transport="http://schemas.xmlsoap.org/soap/http" />
- <wsdl:operation name="HelloWorld">
<soap:operation soapAction="http://tempuri.org/HelloWorld" style="document" />
- <wsdl:input>
<soap:body use="literal" />
wsdl:input>
- <wsdl:output>
<soap:body use="literal" />
wsdl:output>
wsdl:operation>
wsdl:binding>
- <wsdl:binding name="ServiceSoap12" type="tns:ServiceSoap">
<soap12:binding transport="http://schemas.xmlsoap.org/soap/http" />
- <wsdl:operation name="HelloWorld">
<soap12:operation soapAction="http://tempuri.org/HelloWorld" style="document" />
- <wsdl:input>
<soap12:body use="literal" />
wsdl:input>
- <wsdl:output>
<soap12:body use="literal" />
wsdl:output>
wsdl:operation>
wsdl:binding>
- <wsdl:service name="Service">
- <wsdl:port
跟踪发现：竟然没有参数传递给Webservice，参数或者是null或者是初始值。通过查看Post的数据包：
xml version="1.0"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xm lns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XML Schema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"> <SOAP-ENV:Body SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encodin g/" xmlns:NS2="http://microsoft.com/wsdl/types/"> <NS1:GetServiceInfo xmlns:NS1="http://goldentek.biz/"> <passport xsi:type="xsd:string">xxx@im.chinabubble.compassport> <oem xsi:type="NS2:guid">{xxxxxxxx-8456-550a-8bb9-65d484f8bc3b}oem> <codePage xsi:type="xsd:int">936codePage> NS1:GetServiceInfo> SOAP-ENV:Body> SOAP-ENV:Envelope> <NS1:GetServiceInfo xmlns:NS1="http://goldentek.biz/"> <passport xsi:type="xsd:string">monkeyking@im.chinabubble.compassport> <oem xsi:type="NS2:guid">{341a4fbb-8456-550a-8bb9-65d484f8bc3b}oem> <codePage xsi:type="xsd:int">936codePage> NS1:GetServiceInfo>下面先看一下2003和2005生成的wsdl的不同点（完整wsdl看附录）：
1、2005增加了对soap1.2的支持
2、2005如果没有描述会没有<documentation xmlns="http://schemas.xmlsoap.org/wsdl/" /> 标记。
3、2005没有显式设置styly，而采用的是默认值 <soap12:binding transport="http://schemas.xmlsoap.org/soap/http" />
第二个可以排除，它不会产生这样的错误，最有可能的是第一条，delphi对soap1.2支持不好。而且发现：“User-Agent: Borland SOAP 1.2”，证明delphi确实用的是Soap1.2。手动修改Wsdl，去掉对1.2的支持重新生成代理类，测试扔出现问题。
是第三个？可是省略style也是符合wsdl规范的。修改wsdl加上style，测试成功。真是没有想到会是这里的问题，修改起来竟是如此简单！
后面还发现delphi不能正确解析nil如：
总结：
可以看出delphi对webservie的封装还是很有问题的，规范都没有实现！对xml的支持也不完善。
因此在webservice的开发中不要用高级的特性，因为某些语言对service的封装还是不好。
还真是怀疑wse的前途，还是因为某些语言调用起来很麻烦。
附：
正确的Post格式
1、
xml version="1.0"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xm lns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XML Schema-instance"> <SOAP-ENV:Body> <GetServiceInfo xmlns="http://goldentek.biz/"> <passport>xxxxx@im.chinabubble.compassport> <oem>{xxxxxxxx-8456-550a-8bb9-65d484f8bc3b}oem> <codePage>936codePage> GetServiceInfo> SOAP-ENV:Body> SOAP-ENV:Envelope><SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <SOAP-ENV:Body> <m:GetServiceInfo xmlns:m="http://goldentek.biz/"> <m:passport>monkeyking@im.chinabubble.comm:passport> <m:oem>341a4fbb-8456-550a-8bb9-65d484f8bc3bm:oem> <m:codePage>936m:codePage> m:GetServiceInfo> SOAP-ENV:Body>SOAP-ENV:Envelope>wsdl规范：
http://www.w3.org/TR/2004/WD-wsdl20-primer-20041221/
下面是1.1和2.0的wsdl，webmethod是：
<!--
Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/
-->
[WebMethod] public string HelloWorld(string s) { string t = s; return "Hello World"; }
.net1.1生成的wsdl：
<!--
Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/
-->
xml version="1.0" encoding="utf-8" ?> - <wsdl:definitions xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tns="http://tempuri.org/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" targetNamespace="http://tempuri.org/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">- <wsdl:types>- <s:schema elementFormDefault="qualified" targetNamespace="http://tempuri.org/">- <s:element name="HelloWorld">- <s:complexType>- <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="s" type="s:string" /> s:sequence> s:complexType> s:element>- <s:element name="HelloWorldResponse">- <s:complexType>- <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="HelloWorldResult" type="s:string" /> s:sequence> s:complexType> s:element> s:schema> wsdl:types>- <wsdl:message name="HelloWorldSoapIn"> <wsdl:part name="parameters" element="tns:HelloWorld" /> wsdl:message>- <wsdl:message name="HelloWorldSoapOut"> <wsdl:part name="parameters" element="tns:HelloWorldResponse" /> wsdl:message>- <wsdl:portType name="Service1Soap">- <wsdl:operation name="HelloWorld"> <wsdl:input message="tns:HelloWorldSoapIn" /> <wsdl:output message="tns:HelloWorldSoapOut" /> wsdl:operation> wsdl:portType>- <wsdl:binding name="Service1Soap" type="tns:Service1Soap"> <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" /> + <wsdl:operation name="HelloWorld"> <soap:operation soapAction="http://tempuri.org/HelloWorld" style="document" /> - <wsdl:input> <soap:body use="literal" /> wsdl:input>- <wsdl:output> <soap:body use="literal" /> wsdl:output> wsdl:operation> wsdl:binding>- <wsdl:service name="Service1"> <documentation xmlns="http://schemas.xmlsoap.org/wsdl/" /> - <wsdl:port name="Service1Soap" binding="tns:Service1Soap"> <soap:address location="http://localhost/WebService1/Service1.asmx" /> wsdl:port> wsdl:service> wsdl:definitions>
.net2.0生成的wsdl：
<!--
Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/
-->
xml version="1.0" encoding="utf-8" ?> - <wsdl:definitions xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:tns="http://tempuri.org/" xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" targetNamespace="http://tempuri.org/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">- <wsdl:types>- <s:schema elementFormDefault="qualified" targetNamespace="http://tempuri.org/">- <s:element name="HelloWorld">- <s:complexType>- <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="s" type="s:string" /> s:sequence> s:complexType> s:element>- <s:element name="HelloWorldResponse">- <s:complexType>- <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="HelloWorldResult" type="s:string" /> s:sequence> s:complexType> s:element> s:schema> wsdl:types>- <wsdl:message name="HelloWorldSoapIn"> <wsdl:part name="parameters" element="tns:HelloWorld" /> wsdl:message>- <wsdl:message name="HelloWorldSoapOut"> <wsdl:part name="parameters" element="tns:HelloWorldResponse" /> wsdl:message>- <wsdl:portType name="ServiceSoap">- <wsdl:operation name="HelloWorld"> <wsdl:input message="tns:HelloWorldSoapIn" /> <wsdl:output message="tns:HelloWorldSoapOut" /> wsdl:operation> wsdl:portType>- <wsdl:binding name="ServiceSoap" type="tns:ServiceSoap"> <soap:binding transport="http://schemas.xmlsoap.org/soap/http" /> - <wsdl:operation name="HelloWorld"> <soap:operation soapAction="http://tempuri.org/HelloWorld" style="document" /> - <wsdl:input> <soap:body use="literal" /> wsdl:input>- <wsdl:output> <soap:body use="literal" /> wsdl:output> wsdl:operation> wsdl:binding>- <wsdl:binding name="ServiceSoap12" type="tns:ServiceSoap"> <soap12:binding transport="http://schemas.xmlsoap.org/soap/http" /> - <wsdl:operation name="HelloWorld"> <soap12:operation soapAction="http://tempuri.org/HelloWorld" style="document" /> - <wsdl:input> <soap12:body use="literal" /> wsdl:input>- <wsdl:output> <soap12:body use="literal" /> wsdl:output> wsdl:operation> wsdl:binding>- <wsdl:service name="Service">- <wsdl:port
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