Apache CXF WebService 使用

WebService具体是干什么的我这里就不用说了，这里介绍一下Aapche CXF配制与使用，这里我是采用Tomcat for Spring方式WebService服务跟着Tomcat一同启动，先下载CXF所需的包，放到你的工程的WEB-INF/lib目录下，新建 bean.xml，内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:jaxws="http://cxf.apache.org/jaxws"
    xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd">

    <import resource="classpath:META-INF/cxf/cxf.xml" />
    <import resource="classpath:META-INF/cxf/cxf-extension-soap.xml" />
    <import resource="classpath:META-INF/cxf/cxf-servlet.xml" />
       
    <bean id="CXFImpl" class="CXF.CXFServiceDao" />
    <jaxws:endpoint
      id="ICXFService" implementor="#CXFImpl"  address="/ICXFService" />
</beans>
然后web.xml中加入如下内容：
<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>WEB-INF/beans.xml</param-value>
    </context-param>

    <listener>
        <listener-class>
            org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>

    <servlet>
        <servlet-name>CXFServlet</servlet-name>
        <servlet-class>
            org.apache.cxf.transport.servlet.CXFServlet
        </servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>CXFServlet</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>
重启Tomcat即可启动服务。
上面内容中的ICXFService是一个接口文件，代码如下：
package CXF;
 
import java.util.List;
import java.util.Map;
 
import javax.jws.WebParam;
import javax.jws.WebService;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
 
@WebService
public interface ICXFService {
 
    // 根据缴费周期，用户编号提取当月的记录
 
    @XmlJavaTypeAdapter(CXF.adapter.MapAdapter.class)
    Map<String,String> showMap(@WebParam(name = "feeMonth") String feeMonth,@WebParam(name = "userId") String userId);     
     
     //根据用户表号查询近6个月的欠费信息
    public List<PowerFeeDetailDto> getPowerFeeDetail(@WebParam(name = "userId") String userId);
    
    //根据缴费周期，用户编号提取用户表码信息
    @XmlJavaTypeAdapter(CXF.adapter.MapAdapter.class)
    Map<String,String> showMapGr(@WebParam(name = "feeMonth") String feeMonth,@WebParam(name = "userId") String userId);     
     
}
CXFService是一个ICXFServicer接口的具体实现，此处就不再列出。
MapAdapter.class是一个拦截器，将查询数据转换成Map格式返回过来。代码如下：
package CXF.adapter;

import java.util.HashMap;
import java.util.Map;

import javax.xml.bind.annotation.adapters.XmlAdapter;

public class MapAdapter extends XmlAdapter<MapPair[],Map<Object, Object>>{
   
    public Map<Object, Object> unmarshal(MapPair[] pairs) {
        Map<Object,Object> map = new HashMap<Object, Object>();
        for (MapPair pair : pairs) {
            map.put(pair.key, pair.value);
        }
        return map;
    }

    public MapPair[] marshal(Map<Object, Object> v) throws Exception {
        MapPair[] pairs = new MapPair[v.size()];
        int i = 0;
        for(Map.Entry<Object, Object> entry : v.entrySet()) {
            pairs[i++] = new MapPair(entry.getKey().toString(), entry.getValue().toString());
        }
        return pairs;
    }
}
-----------------------------------------------------------------------------------------------------------
MapPair.class
package CXF.adapter;

public class MapPair {

    public String key;

    public String value;
   
    public MapPair(){
       
    }
   
    public MapPair(String key, String value) {
        this.key =  key;
        this.value = value;
    }
}
客户端需要建立一个client-bean.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!-- START SNIPPET: beans -->
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:jaxws="http://cxf.apache.org/jaxws"
    xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://cxf.apache.org/jaxws http://cxf.apache.org/schema/jaxws.xsd">

    <bean id="client" class="demo.spring.HelloWorld"
      factory-bean="clientFactory" factory-method="create"/>
   
    <bean id="clientFactory" class="org.apache.cxf.jaxws.JaxWsProxyFactoryBean">
      <property name="serviceClass" value="demo.spring.HelloWorld"/>
      <property name="address" value="http://localhost:8080/CXF/HelloWorld"/>
    </bean>
</beans>
客户端程序：
package demo.spring.client;


import java.util.Map;

import demo.spring.HelloWorld;

import org.springframework.context.support.ClassPathXmlApplicationContext;


public final class Client {

    private Client() {
    }

    public static void main(String args[]) throws Exception {
        // START SNIPPET: client
        ClassPathXmlApplicationContext context
            = new ClassPathXmlApplicationContext(new String[] {"demo/spring/client/client-beans.xml"});

        HelloWorld client = (HelloWorld)context.getBean("client");

       System.out.println("Invoke showMap()....");
        Map<String, String> map = client.showMap();
        if (map !=null){
            System.out.println("1:"+map.get("1"));
            System.out.println("2:"+map.get("2"));
            System.out.println("3:"+map.get("3"));
        }
        System.exit(0);
    }
}