学步园

公司有需求是这样的：一台服务器上用MemCached存一了些数据，另一台服务器的数据库上也存了数据，MemCached是数据库的映象，所以问题是数据同步。
数据库是oracle10g，暂考虑以webservice实现，oracle10g中可以使用webservice。
测试例子：
需要导入dbws-callout-utility-10131.zip地址：
http://download.oracle.com/technology/sample_code/tech/java/jsp/dbws-callout-utility-10131.zip
导入方法是这样的：
The jar file can be loaded into the SYS schema for everyone to access, or into an individual schema that needs access to the web client.

    # Load into the SYS schema.
    export PATH=/u01/app/oracle/product/10.2.0/db_1/bin:$PATH
    cd /u01/app/oracle/product/10.2.0/db_1/sqlj/lib
    # 10gR2
    loadjava -u sys/password -r -v -f -genmissing -s -grant public dbwsclientws.jar dbwsclientdb102.jar
    # 11g
    loadjava -u sys/password -r -v -f -genmissing -s -grant public dbwsclientws.jar dbwsclientdb11.jar

    # Load into an individual schema.
    export PATH=/u01/app/oracle/product/10.2.0/db_1/bin:$PATH
    cd /u01/app/oracle/product/10.2.0/db_1/sqlj/lib
    # 10gR2
    loadjava -u scott/tiger -r -v -f -genmissing dbwsclientws.jar dbwsclientdb102.jar
    # 11g
    loadjava -u scott/tiger -r -v -f -genmissing dbwsclientws.jar dbwsclientdb11.jar

导入完成后写如下SQL

CREATE OR REPLACE FUNCTION get_city_from_zipcode (ssid  IN  INTEGER,ssname IN VARCHAR2)
  RETURN VARCHAR2
AS
  l_service  UTL_DBWS.service;
  l_call     UTL_DBWS.call;
  l_result   ANYDATA;
  
  l_wsdl_url         VARCHAR2(32767);
  l_namespace        VARCHAR2(32767);
  l_service_qname    UTL_DBWS.qname;
  l_port_qname       UTL_DBWS.qname;
  l_operation_qname  UTL_DBWS.qname;
  l_input_params     UTL_DBWS.anydata_list;
BEGIN
  l_wsdl_url        := 'http://localhost:8888/axis/services/OracleSay?wsdl';
  l_namespace       := 'http://localhost:8888/axis/services/OracleSay';

  l_service_qname   := UTL_DBWS.to_qname(l_namespace, 'OracleSayService');
  l_port_qname      := UTL_DBWS.to_qname(l_namespace, 'OracleSay');
  l_operation_qname := UTL_DBWS.to_qname(l_namespace, 'test');

  l_service := UTL_DBWS.create_service (
    wsdl_document_location => URIFACTORY.getURI(l_wsdl_url),
    service_name           => l_service_qname);

  l_call := UTL_DBWS.create_call (
    service_handle => l_service,
    port_name      => l_port_qname,
    operation_name => l_operation_qname);

  l_input_params(0) := ANYDATA.CONVERTNUMBER(ssid);
  l_input_params(1) := ANYdATA.CONVERTVARCHAR2(ssname);
  l_result := UTL_DBWS.invoke ( 
    call_handle  => l_call,
    input_params => l_input_params);

  UTL_DBWS.release_call (call_handle => l_call);
  UTL_DBWS.release_service (service_handle => l_service);

  RETURN ANYDATA.AccessVarchar2(l_result);
END;

关于上面一些方法的含意可以看这里：
http://download-east.oracle.com/docs/cd/B19306_01/appdev.102/b14258/u_dbws.htm#i1001229
接下来是server端，使用tomcat6+axis1.4实现，activation.jar，mail.jar，xerces.jar放到tomcat的lib下，建一个web项目然后把axis包中webapps/axis下的东西拷到WebRoot下。

package gjs;

public class OracleSay {
	public String test(int id,String name){
		return "you id is:"+id+" "+"you name is:"+name+"";
	}
}

发布服务：
写一个deploy.wsdd

<deployment xmlns="http://xml.apache.org/axis/wsdd/" xmlns:java="http://xml.apache.org/axis/wsdd/providers/java">
 <service name="OracleSay" provider="java:RPC">
  <parameter name="allowedMethods" value="test"/>
  <parameter name="className" value="gjs.OracleSay"/>
 </service>
</deployment>

axis.jar里有org.apache.axis.client.AdminClient，run它带参数-lhttp://localhost:8888/axis/services/ src/deploy.wsdd
会在WEB-INF下生成一个server-config.wsdd，如果已经有这个的就直接在
server-config.wsdd中加入：
<service name="OracleSay" provider="java:RPC">
  <parameter name="allowedMethods" value="test"/>
  <parameter name="className" value="gjs.OracleSay"/>
</service>
想看生成的wsdl在浏览器里http://localhost:8888/axis/services/OracleSay?wsdl
生成：

<wsdl:definitions targetNamespace="http://localhost:8888/axis/services/OracleSay">

<!--
WSDL created by Apache Axis version: 1.4
Built on Apr 22, 2006 (06:55:48 PDT)
-->
<wsdl:message name="testResponse">
<wsdl:part name="testReturn" type="xsd:string"/>
</wsdl:message>
<wsdl:message name="testRequest">
<wsdl:part name="id" type="xsd:int"/>
<wsdl:part name="name" type="xsd:string"/>
</wsdl:message>
<wsdl:portType name="OracleSay">
<wsdl:operation name="test" parameterOrder="id name">
<wsdl:input message="impl:testRequest" name="testRequest"/>
<wsdl:output message="impl:testResponse" name="testResponse"/>
</wsdl:operation>
</wsdl:portType>
<wsdl:binding name="OracleSaySoapBinding" type="impl:OracleSay">
<wsdlsoap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
<wsdl:operation name="test">
<wsdlsoap:operation soapAction=""/>
<wsdl:input name="testRequest">
<wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://gjs" use="encoded"/>
</wsdl:input>
<wsdl:output name="testResponse">
<wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://localhost:8888/axis/services/OracleSay" use="encoded"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:service name="OracleSayService">
<wsdl:port binding="impl:OracleSaySoapBinding" name="OracleSay">
<wsdlsoap:address location="http://localhost:8888/axis/services/OracleSay"/>
</wsdl:port>
</wsdl:service>
</wsdl:definitions>

用java写个client测试：

	public static void main(String[] args) throws ServiceException, MalformedURLException, RemoteException {
		String endPoint="http://localhost:8888/axis/services/OracleSay";
		Service service=new Service();
		Call call=null;
		call=(Call)service.createCall();
		call.setOperationName(new QName(endPoint,"test"));
		call.setTargetEndpointAddress(new java.net.URL(endPoint));
		String str = (String) call.invoke(new Object[]{182,"李世民"});
		System.out.println(str);

	}

输出：you id is:182 you name is:李世民
oracle调用：

SELECT get_city_from_zipcode(22,'lui') FROM dual;

输出：you id is:22 you name is:lui