关于基于xfire webservice框架开发webservice的总结
基础条件：依赖包和插件
http://repository.codehaus.org/org/codehaus/xfire/xfire-distribution/1.2.6/xfire-distribution-1.2.6.zip
开发环境：myeclipse7.5 +tomcat6.0
插件：xfire插件
?
?
包括服务器端的开发和客户端的调用代码的开发
一、 服务器端开发
1.? 开发服务接口
package com.mybank.xfire.example;
public interface IBankingService {
?public String transferFunds(String fromAccount,String toAccount,
???double amount,String currency);
}
?
2.? 开发服务接口实现类
package com.mybank.xfire.example;
?import java.text.NumberFormat;???
?import java.text.DecimalFormat;???
???
?public class BankingService implements IBankingService {???
???
?//Default constructor.???
??? public BankingService(){???????
???? }???
???????
???? /** Transfers fund from one account to another.??
??? */??
??? public String transferFunds(???
??????? String fromAccount,double amount,String currency){???
??????????
??????? String statusMessage = "";???
??????????????????????????
???????? //调用业务逻辑执行操作.???
?????? //建立并返回状态信息.???
??????? try {???
??????????? NumberFormat formatter = new DecimalFormat("###,###,###.00");??????????
???????????? statusMessage = "COMPLETED: " + currency + " " + formatter.format(amount)+????
???????????? " was successfully transferred from A/C# " + fromAccount + " to A/C# " + toAccount;???
??????? } catch (Exception e){???
???????????? statusMessage = "BankingService.transferFunds(): EXCEPTION: " + e.toString();???
??????? }???
???????? return statusMessage;???
?? }???
???
?}
?
3. 接口和实现类的配置
配置文件中加入实现类和接口的配置
配置文件名称为services.xml,其位置为WEB-INF/classes/META-INF/xfire/services.xml
?
<beans xmlns="http://xfire.codehaus.org/config/1.0">????????
<service>?
<name>Banking</name>??
<namespace>mybank</namespace>??
<serviceClass>com.mybank.xfire.example.IBankingService</serviceClass>??
<implementationClass>com.mybank.xfire.example.BankingService</implementationClass>??
</service>??????
</beans>
注意：<name>Banking</name>??? 这个Banking
4. web.xml中配置xfire的servlet.
web.xml配置：
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
?xmlns="http://java.sun.com/xml/ns/javaee"
?xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
?xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
?http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
?
<servlet>?
<servlet-name>XFireServlet</servlet-name>??
<servlet-class>org.codehaus.xfire.transport.http.XFireConfigurableServlet</servlet-class>??
<load-on-startup>0</load-on-startup>??
</servlet>??
<servlet-mapping>??
<servlet-name>XFireServlet</servlet-name>??
<url-pattern>/services/*</url-pattern>??
</servlet-mapping> ?
?
? <welcome-file-list>
??? <welcome-file>index.jsp</welcome-file>
? </welcome-file-list>
</web-app>
注意：servlet配置和url映射
<servlet>?
<servlet-name>XFireServlet</servlet-name>??
<servlet-class>org.codehaus.xfire.transport.http.XFireConfigurableServlet</servlet-class>??
<load-on-startup>0</load-on-startup>??
</servlet>??
<servlet-mapping>??
<servlet-name>XFireServlet</servlet-name>??
<url-pattern>/services/*</url-pattern>??
</servlet-mapping>
5. 发布后测试：
http://192.168.63.187:8080/webservice/services/Banking?wsdl
返回如下：
<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions targetNamespace="mybank" xmlns:soapenc12="http://www.w3.org/2003/05/soap-encoding" xmlns:tns="mybank" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap11="http://schemas.xmlsoap.org/soap/envelope/" xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:soapenc11="http://schemas.xmlsoap.org/soap/encoding/" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
? <wsdl:types>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" attributeFormDefault="qualified" elementFormDefault="qualified" targetNamespace="mybank">
<xsd:element name="transferFunds">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="1" minOccurs="1" name="in0" nillable="true" type="xsd:string"/>
<xsd:element maxOccurs="1" minOccurs="1" name="in1" nillable="true" type="xsd:string"/>
<xsd:element maxOccurs="1" minOccurs="1" name="in2" type="xsd:double"/>
<xsd:element maxOccurs="1" minOccurs="1" name="in3" nillable="true" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="transferFundsResponse">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="1" minOccurs="1" name="out" nillable="true" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>
? </wsdl:types>
? <wsdl:message name="transferFundsResponse">
??? <wsdl:part name="parameters" element="tns:transferFundsResponse">
??? </wsdl:part>
? </wsdl:message>
? <wsdl:message name="transferFundsRequest">
??? <wsdl:part name="parameters" element="tns:transferFunds">
??? </wsdl:part>
? </wsdl:message>
? <wsdl:portType name="BankingPortType">
??? <wsdl:operation name="transferFunds">
????? <wsdl:input name="transferFundsRequest" message="tns:transferFundsRequest">
??? </wsdl:input>
????? <wsdl:output name="transferFundsResponse" message="tns:transferFundsResponse">
??? </wsdl:output>
??? </wsdl:operation>
? </wsdl:portType>
? <wsdl:binding name="BankingHttpBinding" type="tns:BankingPortType">
??? <wsdlsoap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
??? <wsdl:operation name="transferFunds">
????? <wsdlsoap:operation soapAction=""/>
????? <wsdl:input name="transferFundsRequest">
??????? <wsdlsoap:body use="literal"/>
????? </wsdl:input>
????? <wsdl:output name="transferFundsResponse">
??????? <wsdlsoap:body use="literal"/>
????? </wsdl:output>
??? </wsdl:operation>
? </wsdl:binding>
? <wsdl:service name="Banking">
??? <wsdl:port name="BankingHttpPort" binding="tns:BankingHttpBinding">
????? <wsdlsoap:address location="http://192.168.63.187:8080/webservice/services/Banking"/>
??? </wsdl:port>
? </wsdl:service>
</wsdl:definitions>
?
则表示发布成功。
至此，服务器端开发全部完成。
?
二、客户端调用代码的开发
包括以下几种方式
1. 如果能够知道并得到service的类，那么可以在客户端中通过xfier的代理工厂生成service类。然后调用相应的方法。（有服务的代码）
package com.mybank.xfire.example;
import java.net.MalformedURLException;
import org.codehaus.xfire.XFire;
import org.codehaus.xfire.XFireFactory;
import org.codehaus.xfire.client.XFireProxyFactory;
import org.codehaus.xfire.service.Service;
import org.codehaus.xfire.service.binding.ObjectServiceFactory;
public class Client {
?/**
? * @param args
? */
?public static void main(String[] args) {
??Client c=new Client();
??String ret;
??try {
???ret = c.callWebService("111","222",1.1d,"aaaaa");
???System.out.println("s="+ret);
??} catch (MalformedURLException e) {
???// TODO Auto-generated catch block
???e.printStackTrace();
??} catch (Exception e) {
???// TODO Auto-generated catch block
???e.printStackTrace();
??}
?}
?
?
?
??? public String callWebService(???
??? ???????? String fromAccount,String currency)????
??? ????????? throws MalformedURLException,Exception {???
??? ?????????????
??? ???????? //Create a metadata of the service? 创建一个service的元数据???????
??? ??????? Service serviceModel = new ObjectServiceFactory().create(IBankingService.class);???????????
??? ???????? System.out.println("callSoapServiceLocal(): got service model." );???
??? ????????
??? ??????? //Create a proxy for the deployed service 为XFire获得一个代理工厂对象???
??? ??????? XFire xfire = XFireFactory.newInstance().getXFire();???
??? ?????????? XFireProxyFactory factory = new XFireProxyFactory(xfire);?????????
??? ?????????? //得到一个服务的本地代理???
??? ????????? String serviceUrl = "http://192.168.63.187:8080/webservice/services/Banking";???
??? ?????????????
??? ???????? IBankingService client = null;???
??? ????????? try {???
??? ?????????????? client = (IBankingService) factory.create(serviceModel,serviceUrl);???
??? ????????? } catch (MalformedURLException e) {???
??? ?????????? System.out.println("WsClient.callWebService(): EXCEPTION: " + e.toString());???
??? ?????????? }???????
??? ?????????????????????
??????????? //Invoke the service 调用服务 返回状态结果信息???
??? ?????????? String serviceResponse = "";???
??? ????????? try {????
??? ???????????? serviceResponse = client.transferFunds(fromAccount,toAccount,amount,currency);???
??? ????????? } catch (Exception e){???
??? ???????? System.out.println("WsClient.callWebService(): EXCEPTION: " + e.toString());????????????????????
??? ???????????? serviceResponse = e.toString();???
??? ???????? }???????????
??? ?????? System.out.println("WsClient.callWebService(): status=" + serviceResponse);?????????????????
??? ????
??? ???????? //Return the response???
??? ??????? return serviceResponse;???
??? ??? }?
}
?
2. 没有服务的代码，则可以通过xfire插件,自动生成相关的客户端代码
?
插件的地址和安装
利用xfire生成web服务客户端的方法有多种，Eclipse Plugin为XFire的WSDL->Code generator提供了Eclipse支持，它需要Eclipse 3.2和Java 5。这里我们用Eclipse Plugin根据wsdl文件地址生成客户端代码，而我们只需要编写几行代码即可实现调用web服务。下面就是方法步骤：
第一步，安装插件。
??????? 打开Eclipse的Help菜单，选择”Software Updates”，然后再选择”Find and Install.”
??????? 选择"Search for new features to install"，然后点击Next
??????? 选择"Create New Remote Site"， 在name中输入"XFire"，在eclipse update site中输入http://dist.codehaus.org/xfire/update/
??????? 选择OK
??????? 选择Finish。
??? 注意完成上述操作后，eclipse要下载和安装插件，时间长短要视网速而定，请耐心等待，安装完成时还要重启eclipse。
?
第二步，使用插件。
??? 首先新建一个java项目XFireProject，然后依次选择菜单File->New->Other ，选择XFire文件夹下的Code generation from WSDL document，打开代码生成向导.
输入wsdl 地址，选择 生成类所在类的包，执行可自动生成一系列文件。其中有XXXXXXclient的类即可调用代码，
package com.yanek.test;
public class Test {
?/**
? * @param args
? */
?public static void main(String[] args) {
??BankingClient bc=new BankingClient();
??System.out.println("xxxyyyy="+bc.getBankingHttpPort().transferFunds("aaa","bbb",1.0d,"22222111"));
?}
}
其中BankingClient为自动生成的代码
http://192.168.63.187:8080/webservice/services/Banking?wsdl
需要导入xfire相关jar和apache comm包。
?
?
3. 三，由于service类在很多情况下并不是只有自己开发的。这时候很有可能你没有办法得到service类，但是service发布的wsdl文件是可以得到，xfire可以通过wsdl生成client。这里又包含两种方式，第一，把wsdl下载下来到本地的classpath。通过读取wsdl生成。或者，可以直接通过url来生成。这里说明第二种情况
http://192.168.63.187:8080/webservice/services/Banking?wsdl
?
?
package com.yane.test;
import java.net.HttpURLConnection;
import java.net.URL;
import org.codehaus.xfire.client.Client;
public class Test {
?/**
? * @param args
? */
?public static void main(String[] args) {
??
??Test test=new Test();
??String a=test.transferFunds("111","aaaaa");
??System.out.println("xxxxxxx="+a);
??
??
?}
?
?
?
??? public String transferFunds(???
??????????? String fromAccount,String currency)?
??? {??
??????? try{??
??????????? String wsdl = "http://192.168.63.187:8080/webservice/services/Banking?wsdl";??
??????????? URL url = new URL(wsdl);??
??????????? HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection();??
??????????? httpConnection.connect();??
??????????? Client client = new Client(httpConnection.getInputStream(),null);?????????????
??????????? Object []results = client.invoke("transferFunds",new Object[]{fromAccount,currency});??
??????????? return (String)results[0];??
??????? }catch(Exception e){??
??????????? throw new RuntimeException(e);??
??????? }??
??? }
?
}
?
其中，
Object []results = client.invoke("transferFunds",currency}
中transferFunds为方法名， new Object[]{fromAccount,currency} 为对象参数值
