您的位置:首页 > 其它

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

2013-06-28 09:19 411 查看

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:endpoint
implementor="#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
*
*/
@WebService
public 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 extends
XmlAdapter<StringAndUser, Map<String, User>> {

@Override
public 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;
}

@Override
public 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 {

@Override
public String sayHi(String userName) {
String result = new Date() + " " + userName;
System.out.println("Server: " + result);
return result;
}

@Override
public 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);

//ServiceName
QName 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。
内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签: