WebService-05-WebService(CXF)对Map数据类型的支持

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写在前面话

WebService对List本身就提供了支持,但是对Map结构类型的数据不支持,但是我们可通过将其转换List类似的结构完成对Map的间接支持,服务端在WebService-04的基础上增加一个处理Map的方法,客户端不变,


服务端

创建Web工程,工作结构图如下:



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"><context-param><param-name>webAppRootKey</param-name><param-value>cxf.root</param-value></context-param><!-- UTF-8编码配置 --><filter><filter-name>CharacterEncodingFilter</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>UTF-8</param-value></init-param><init-param><param-name>forceEncoding</param-name><param-value>true</param-value></init-param></filter><filter-mapping><filter-name>CharacterEncodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping><!-- 指定配置文件的路径 --><context-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/applicationContext.xml</param-value></context-param><!-- 配置Spring的监听 --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- 配置CXFServlet --><servlet><servlet-name>CXFServlet</servlet-name><servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class></servlet><servlet-mapping><servlet-name>CXFServlet</servlet-name><!-- 两个URL形式都转向WebService,两种URL形式可以访问服务 --><url-pattern>/soa-infra/services/default/*</url-pattern><url-pattern>/cxf/*</url-pattern></servlet-mapping></web-app>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?><!-- 除添加Spring的schmea之外,还要添加关于cxf的schema,其前缀可以随意命名,我使用cxf,也可以使用jaxws --><beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"xmlns:cxf="http://cxf.apache.org/jaxws"xsi:schemaLocation="http://www.springframework.org/schema/beans         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd         http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd"><!-- 指定到类路径下面的META-INF/cxf中去寻找cxf.xml和cxf-servlet.xml这两个文件 --><import resource="classpath:META-INF/cxf/cxf.xml" /><import resource="classpath:META-INF/cxf/cxf-servlet.xml" /><!-- 提供服务的bean --><bean id="helloWorldWs" class="com.wds.ws.server.spring.impl.HelloServiceImpl" /><!-- implementor:指定服务的提供者,有两种方式:1是类名,2是bean的名字address:服务路径 --><cxf:endpointimplementor="#helloWorldWs"address="/helloworld"></cxf:endpoint></beans>

服务接口

在接口增加一个关于Map返回类型的方法
package com.wds.ws.server.spring;import java.util.Map;import javax.jws.WebService;import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;import com.wds.ws.server.spring.adapter.XmlAdapterForMapStringUser;import com.wds.ws.server.spring.model.User;/** * 服务接口 * @author wds * */@WebServicepublic interface HelloService {public String sayHi(String userName);/** * WebService对Map类型数据处理的方式 * @param type * @return */@XmlJavaTypeAdapter(value=XmlAdapterForMapStringUser.class)public Map<String, User> getMapData(String type);}
采用@XmlJavaTypeAdapter注解指定对Map<String,User>类型的转换类,XmlAdapterForMapStringUser这个类负责在WebService执行时的类型转换,代码如下:

转换类

package com.wds.ws.server.spring.adapter;import java.util.HashMap;import java.util.List;import java.util.Map;import javax.xml.bind.annotation.adapters.XmlAdapter;import com.wds.ws.server.spring.adapter.StringAndUser.Entry;import com.wds.ws.server.spring.model.User;/** * 实现从BoundType到ValueType之间的转换 * @author wds * */public class XmlAdapterForMapStringUser extendsXmlAdapter<StringAndUser, Map<String, User>> {@Overridepublic Map<String, User> unmarshal(StringAndUser stringUser) throws Exception {List<Entry> entrties = stringUser.getEntries();Map<String, User> result = null;if(entrties != null && entrties.size() > 0){result = new HashMap<String, User>();for (Entry entry : entrties) {result.put(entry.getKey(), entry.getValue());}}return null;}@Overridepublic StringAndUser marshal(Map<String, User> stringUserMap) throws Exception {StringAndUser result = new StringAndUser();if(stringUserMap != null){for (String key : stringUserMap.keySet()) {result.getEntries().add(new Entry(key, stringUserMap.get(key)));}}return result;}}

这个转换类的作用就是在WebService支持的数据类型与Map之间做一个转换,而StringAndUser就是将Map转换成了WebService支持的类型,接下来我们看StringAndUser类

StringAndUser类,与Map相等同的数据类型

package com.wds.ws.server.spring.adapter;import java.util.ArrayList;import java.util.List;import com.wds.ws.server.spring.model.User;/** * 与Map<String, User>互相转换的类 Map是由Key和Value构成,可以存放多个Key,类似二维结构的List * 基于此,我们可构成一个List<Object>的数据类型,而这个Object是两个属性,一个是Key,一个是Value *  * @author wds *  */public class StringAndUser {private List<Entry> entries = new ArrayList<Entry>();public List<Entry> getEntries() {return entries;}public void setEntries(List<Entry> entries) {this.entries = entries;}/** * 创建一个关于Entry的内部类 由Key和Value组织 注意内部类的访问权限 */public static class Entry {private String key;private User value;public Entry() {}/** * 带参数的构造方法 *  * @param key * @param value */public Entry(String key, User value) {this.key = key;this.value = value;}public String getKey() {return key;}public void setKey(String key) {this.key = key;}public User getValue() {return value;}public void setValue(User value) {this.value = value;}}}

服务实现

package com.wds.ws.server.spring.impl;import java.util.Date;import java.util.HashMap;import java.util.Map;import javax.jws.WebService;import com.wds.ws.server.spring.HelloService;import com.wds.ws.server.spring.model.User;/** * 服务实现类 * 关于@WebService在上面有介绍过 * @author wds * */@WebService(endpointInterface="com.wds.ws.server.spring.HelloService", portName="hwPort", serviceName="hwService")public class HelloServiceImpl implements HelloService {@Overridepublic String sayHi(String userName) {String result = new Date() + " " + userName;System.out.println("Server: " + result);return result;}@Overridepublic Map<String, User> getMapData(String type) {Map<String, User> result = new HashMap<String, User>();User user = new User("no.1", "address one");result.put("one1", user);user = new User("no.2", "address two");result.put("one2", user);user = new User("no.3", "address three");result.put("one3", user);return result;}}

user类

package com.wds.ws.server.spring.model;public class User {private String userName;private String address;public User() {}public User(String userName, String address) {this.userName = userName;this.address = address;}public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getAddress() {return address;}public void setAddress(String address) {this.address = address;}}

将服务部署到Tomcat下,启动

客户端

客户端如WebService-04的方式,切换到cxf的bin目录下,执行以下命令:
wsdl2java -p com.wds.ws.client.spring http://localhost:8080/com.wds.ws.server.spring/cxf/helloworld?wsdl
-p是指定包结构
将产生的类复制到工作中去,工作结构如下:


编写Client测试类,代码如下:
package com.wds.ws.client;import java.net.MalformedURLException;import java.net.URL;import java.util.List;import javax.xml.namespace.QName;import javax.xml.ws.Service;import com.wds.ws.client.spring.Entry;import com.wds.ws.client.spring.HelloService;import com.wds.ws.client.spring.StringAndUser;/** * 客户端 * @author wds * */public class Client {/** * 命令 * 我的cxf的包放到f:/package,可根据实际目录调整 * F:\Package\apache-cxf-2.7.3\bin>wsdl2java -p com.wds.ws.client.spring http://localhost:8080/com.wds.ws.server.spring/cxf/helloworld?wsdl *//** * WSDL的地址 */private final static String url = "http://localhost:8080/com.wds.ws.server.spring/cxf/helloworld?wsdl";/** * 命名空间,在WSDL根节点中的targetNameSpace */private final static String nameSpace = "http://impl.spring.server.ws.wds.com/";/** * 服务名称,在WSDL文件中的节点为<wsdl:sevice name="XXX">的name属性值 */private final static String sName = "hwService";/** * @param args */public static void main(String[] args) {try {//生成wsdlUrl对象URL wsdlUrl = new URL(url);//ServiceNameQName serviceName = new QName(nameSpace, sName);//创建Service对象Service service = Service.create(wsdlUrl, serviceName);//获取port,HelloService为port的类型HelloService hwService = service.getPort(HelloService.class);//执行方法调用String result = hwService.sayHi("wds");StringAndUser stringUser = hwService.getMapData("map");List<Entry> entries = stringUser.getEntries();//输出getMapData方法的结果for (Entry entry : entries) {System.out.println("Key:" + entry.getKey() + " Value:" + entry.getValue());}//输出sayHi的结果System.out.println(result);} catch (MalformedURLException e) {e.printStackTrace();}}}
测试即可。

小结

对于WebService不支持Map结构的数据类型,我们可将其转换成WebService支持的数据结构即可解决。