一、需求描述

• 正常来讲webService可以处理Java 数据类型、JavaBean、List等，但是却不能处理Map数据类型。本章讲解如何使用适配器来使得web服务可以处理Map数据类型。
• 流程：

1. 在web服务接口类中添加@XmlJavaTypeAdapter注解

@XmlJavaTypeAdapter(MapAdapter.class)
@WebResult(name="getRolesResult")
public Map<String,List<Role>> getRoles();

　　2. 编写适配器类

二、案例

　　2.1　　服务端

• Role.java

public class Role {
private Integer id;
private String roleName;

public Role() {
super();
}

public Role(Integer id, String roleName) {
super();
this.id = id;
this.roleName = roleName;
}

//省略getset方法
｝

• User.java

public class User {
private Integer id;
private String userName;
private String passWord;

//隐藏getset方法
｝

• 编写服务接口

package com.shyroke.service;

import java.util.List;
import java.util.Map;

import javax.jws.WebResult;
import javax.jws.WebService;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;

import com.shyroke.bean.Role;

@WebService
public interface ILogin {

@XmlJavaTypeAdapter(MapAdapter.class)
@WebResult(name="getRolesResult")
public Map<String,List<Role>> getRoles();
}

• 编写服务接口实现类

package com.shyroke.service;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.jws.WebService;

import com.shyroke.bean.Role;
import com.shyroke.bean.User;

@WebService(endpointInterface = "com.shyroke.service.ILogin")
public class Login implements ILogin {

/**
* 获取所有用户以及对应的角色
*/
public Map<String, List<Role>> getRoles() {
Map<String, List<Role>> map = new HashMap<String, List<Role>>();

List<Role> roleList1 = new ArrayList<Role>();
roleList1.add(new Role(1, "架构师"));
roleList1.add(new Role(2, "技术总监"));

List<Role> roleList2 = new ArrayList<Role>();
roleList2.add(new Role(3, "程序员"));

map.put("张三", roleList1);
map.put("李四", roleList2);

return map;
}

}

• 编写适配器

package com.shyroke.service;

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

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

import com.shyroke.bean.MyRole;
import com.shyroke.bean.Role;

public class MapAdapter extends XmlAdapter<MyRole[], Map<String, List<Role>>> {

/**
* 适配转换 MyRole[] -> Map<String, List<Role>>
*/
@Override
public MyRole[] marshal(Map<String, List<Role>> roleMap) throws Exception {
MyRole[] roles = new MyRole[roleMap.size()];

int i = 0;
for (String key : roleMap.keySet()) {
roles[i] = new MyRole();
roles[i].setKey(key);
roles[i].setValue(roleMap.get(key));
i++;
}

return roles;
}

/**
* 适配转换 Map<String, List<Role>> -> MyRole[]
*/
@Override
public Map<String, List<Role>> unmarshal(MyRole[] roles) throws Exception {

Map<String, List<Role>> map = new HashMap<String, List<Role>>();

for (int i = 0; i < roles.length; i++) {
map.put(roles[i].getKey(), roles[i].getValue());
}

return map;
}

}

• MyRole.java

/**
* 本类用于webService的Map类型的数据转换。
* @author Administrator
*
*/
public class MyRole {
private String key;
private List<Role> value;

//隐藏getset方法
}

• 发布服务

package com.shyroke.publish;

import org.apache.cxf.jaxws.JaxWsServerFactoryBean;

import com.shyroke.service.ILogin;
import com.shyroke.service.Login;

public class PublishMain {
public static void main(String[] args) {

String address="http://localhost:3333/login";
JaxWsServerFactoryBean factoryBean=new JaxWsServerFactoryBean();
factoryBean.setAddress(address);
factoryBean.setServiceClass(ILogin.class);
factoryBean.setServiceBean(new Login());

factoryBean.create();
System.out.println("服务发布.......");

}
}

 　　　2.2　　客户端

•  用cxf工具生成client文件

•  测试

package com.shyroke.service;

import java.util.List;

public class Client {
public static void main(String[] args) {
ILogin login=new ILoginService().getILoginPort();
MyRoleArray roles=login.getRoles();
List<MyRole> roleList= roles.item;
for(MyRole role:roleList) {
System.out.println(role.getKey());
for(Role r:role.getValue()) {
System.out.println(r.getId()+"\t"+r.getRoleName());
}
System.out.println("------------------");
}
}
}