web service

首先定义个接口Hello.java



Java代码 
package ch1;  
 
public interface Hello {  
 
    public String sayHello();  
} 

package ch1;

public interface Hello {

public String sayHello();
} 然后实现这个接口， 实现类为：HelloImpl.java



Java代码 
package ch1;  
 
public class HelloImpl implements Hello{  
 
    public String sayHello() {  
        return "hello";  
    }  
 
} 

package ch1;

public class HelloImpl implements Hello{

public String sayHello() {
return "hello";
}

} 通过CXF把这个web service发表出去：

package ch1;

Java代码 
import org.apache.cxf.frontend.ServerFactoryBean;  
 
public class Test {  
 
    public static void main(String[] args)  
    {  
        HelloImpl impl = new HelloImpl();  
        ServerFactoryBean factory = new ServerFactoryBean();  
        factory.setServiceClass(Hello.class);  
        factory.setAddress("http://localhost:8080/Hello");  
        factory.setServiceBean(impl);factory.getInInterceptors().add(new LoggingInInterceptor());  
        factory.getOutInterceptors().add(new LoggingOutInterceptor());  
        factory.create();  
    }  
} 

import org.apache.cxf.frontend.ServerFactoryBean;

public class Test {

public static void main(String[] args)
{
HelloImpl impl = new HelloImpl();
ServerFactoryBean factory = new ServerFactoryBean();
factory.setServiceClass(Hello.class);
factory.setAddress("http://localhost:8080/Hello");
factory.setServiceBean(impl);factory.getInInterceptors().add(new LoggingInInterceptor());
factory.getOutInterceptors().add(new LoggingOutInterceptor());
factory.create();
}
} 访问这个web service的wsdl文件 http://localhost:8080/Hello?wsdl

Html代码 
<wsdl:definitions name="Hello" targetNamespace="http://ch1/"> 
        <wsdl:types> 
                <xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://ch1/"> 
                        <xsd:element name="sayHello" type="tns:sayHello"/> 
                        <xsd:complexType name="sayHello"> 
                                <xsd:sequence/> 
                        </xsd:complexType> 
                        <xsd:element name="sayHelloResponse" type="tns:sayHelloResponse"/> 
                        <xsd:complexType name="sayHelloResponse"> 
                                <xsd:sequence> 
                                        <xsd:element minOccurs="0" name="return" type="xsd:string"/> 
                                </xsd:sequence> 
                        </xsd:complexType> 
                </xsd:schema> 
        </wsdl:types> 
        <wsdl:message name="sayHelloResponse"> 
                <wsdl:part element="tns:sayHelloResponse" name="parameters"></wsdl:part> 
        </wsdl:message> 
        <wsdl:message name="sayHello"> 
                <wsdl:part element="tns:sayHello" name="parameters"></wsdl:part> 
        </wsdl:message> 
        <wsdl:portType name="HelloPortType"> 
                <wsdl:operation name="sayHello"> 
                        <wsdl:input message="tns:sayHello" name="sayHello"> 
                        </wsdl:input> 
                        <wsdl:output message="tns:sayHelloResponse" name="sayHelloResponse"> 
                        </wsdl:output> 
                </wsdl:operation> 
        </wsdl:portType> 
        <wsdl:binding name="HelloSoapBinding" type="tns:HelloPortType"> 
                <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/> 
                        <wsdl:operation name="sayHello"> 
                        <soap:operation soapAction="" style="document"/> 
                        <wsdl:input name="sayHello"> 
                                <soap:body use="literal"/> 
                        </wsdl:input> 
                        <wsdl:output name="sayHelloResponse"> 
                                <soap:body use="literal"/> 
                        </wsdl:output> 
                </wsdl:operation> 
        </wsdl:binding> 
        <wsdl:service name="Hello"> 
                <wsdl:port binding="tns:HelloSoapBinding" name="HelloPort"> 
                        <soap:address location="http://localhost:8080/Hello"/> 
                </wsdl:port> 
        </wsdl:service> 
</wsdl:definitions> 

<wsdl:definitions name="Hello" targetNamespace="http://ch1/">
<wsdl:types>
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://ch1/">
<xsd:element name="sayHello" type="tns:sayHello"/>
<xsd:complexType name="sayHello">
<xsd:sequence/>
</xsd:complexType>
<xsd:element name="sayHelloResponse" type="tns:sayHelloResponse"/>
<xsd:complexType name="sayHelloResponse">
<xsd:sequence>
<xsd:element minOccurs="0" name="return" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>
</wsdl:types>
<wsdl:message name="sayHelloResponse">
<wsdl:part element="tns:sayHelloResponse" name="parameters"></wsdl:part>
</wsdl:message>
<wsdl:message name="sayHello">
<wsdl:part element="tns:sayHello" name="parameters"></wsdl:part>
</wsdl:message>
<wsdl:portType name="HelloPortType">
<wsdl:operation name="sayHello">
<wsdl:input message="tns:sayHello" name="sayHello">
</wsdl:input>
<wsdl:output message="tns:sayHelloResponse" name="sayHelloResponse">
</wsdl:output>
</wsdl:operation>
</wsdl:portType>
<wsdl:binding name="HelloSoapBinding" type="tns:HelloPortType">
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<wsdl:operation name="sayHello">
<soap:operation soapAction="" style="document"/>
<wsdl:input name="sayHello">
<soap:body use="literal"/>
</wsdl:input>
<wsdl:output name="sayHelloResponse">
<soap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:service name="Hello">
<wsdl:port binding="tns:HelloSoapBinding" name="HelloPort">
<soap:address location="http://localhost:8080/Hello"/>
</wsdl:port>
</wsdl:service>
</wsdl:definitions>
web service的服务器端把这个wsdl暴露出来， 客户端可以根据这个wsdl来访问客户端。
客户端通过ClientProxyFactoryBean类创建实例， 然后调用实例的方法。
Java代码 
public class TestClient   
{  
 
    public static void main(String[] args)  
    {  
        ClientProxyFactoryBean factory = new ClientProxyFactoryBean();  
        factory.setServiceClass(Hello.class);  
        factory.setAddress("http://localhost:8080/Hello");  
        Hello hello = (Hello) factory.create();  
        System.out.println("invoke sayHello()...");  
        hello.sayHello();  
        System.exit(0);  
    }  
} 

public class TestClient
{

public static void main(String[] args)
{
ClientProxyFactoryBean factory = new ClientProxyFactoryBean();
factory.setServiceClass(Hello.class);
factory.setAddress("http://localhost:8080/Hello");
Hello hello = (Hello) factory.create();
System.out.println("invoke sayHello()...");
hello.sayHello();
System.exit(0);
}
} 运行这个java文件可以在客户端看到结果：
invoke sayHello()...
hello


这样我们就可以访问这个发表出去的web service了


也可以在eclipse 的 run->Launch the web service Explorer 来观察已经发表的web servic


  还可以添加拦截器
 
Java代码 
factory.getInInterceptors().add(new LoggingInInterceptor()); 

factory.getInInterceptors().add(new LoggingInInterceptor());Java代码 
factory.getOutInterceptors().add(new LoggingOutInterceptor()); 

factory.getOutInterceptors().add(new LoggingOutInterceptor());