webservice如何处理返回值是list集合

   在上篇博客中介绍了入门实例，并搭建的基本的框架和引入jar包，下面在原来的基础上学习webservce如何处理返回值是list集合。

一、服务端

1.建pojo类（Cat和User）

public class User {
	private int id;
	private String name;
	private String pass;
	private String address;
	
	public User(){
	}
	
	public User(int id, String name, String pass, String address) {
		super();
		this.id = id;
		this.name = name;
		this.pass = pass;
		this.address = address;
	}


	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPass() {
		return pass;
	}
	public void setPass(String pass) {
		this.pass = pass;
	}
	public String getAddress() {
		return address;
	}
	public void setAddress(String address) {
		this.address = address;
	}
	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((name == null) ? 0 : name.hashCode());
		result = prime * result + ((pass == null) ? 0 : pass.hashCode());
		return result;
	}
        //只要name和pass的值和分别相等就能获取到对象
        @Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		User other = (User) obj;
		if (name == null) {
			if (other.name != null)
				return false;
		} else if (!name.equals(other.name))
			return false;
		if (pass == null) {
			if (other.pass != null)
				return false;
		} else if (!pass.equals(other.pass))
			return false;
		return true;
	}
}

public class Cat {
	private int id;
	private String name;
	private String color;
	
	public Cat(){}
	
	public Cat(int id, String name, String color) {
		super();
		this.id = id;
		this.name = name;
		this.color = color;
	}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getColor() {
		return color;
	}
	public void setColor(String color) {
		this.color = color;
	}
	
}

2.建service接口和实现类

public interface UserService {
         //返回值类型是list
	 List getCatsByUser(User user);
}

public class UserServiceImpl implements UserService{
	//用hashmap模拟内存中的数据库
	static Map> catDb = new HashMap>();
	
	static{
		List catList1 = new ArrayList();
		catList1.add(new Cat(1,"garfield","橙色"));
		catList1.add(new Cat(2,"机器猫","蓝色"));
		catDb.put(new User(1,"sun","3322","花果山"), catList1);
	
		List catList2 = new ArrayList();
		catList2.add(new Cat(3,"kitty","白色"));
		catList2.add(new Cat(4,"熊猫","黑白色"));
		catDb.put(new User(2,"zhu","4422","高老庄"), catList2);
	}
	//返回值类型是list
	@Override
	public List getCatsByUser(User user) {
		
		return catDb.get(user);
	}
}

3.在webservice组件中调用方法

@WebService //是扩展java类提供的
public interface HelloWorld {

	List getCatsByUser(User user);
}

@WebService(endpointInterface="com.tgb.cxf.ws.HelloWorld"
	,serviceName="HelloWorldWs")
public class HelloWorldWs implements HelloWorld {
 
	private UserService us = new UserServiceImpl();

	@Override
	public List getCatsByUser(User user) {
		//在实际的项目中web service组件自己并不会去实现业务功能
		//它只是调用业务逻辑主键的方法来暴露web service
		return us.getCatsByUser(user);
	}
}

4.发布项目

  也就是执行服务器端的main方法

5.查看wsdl文档如下

 

  对文档的解析以后的博客中会有讲解。

二、客户端

   服务器端发布成功后，一定要执行下面的命令客户端才能更新

  

public class ClientMain {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		HelloWorldWs factory = new HelloWorldWs();
		//此处返回的只是远程web service的代理
		HelloWorld hw = factory.getHelloWorldWsPort();
		System.out.println(hw.sayHi("孙悟空"));
		
		User user = new User();
		user.setId(30);
		user.setName("sun");
		user.setPass("3322");
		
		List catList = hw.getCatsByUser(user);
		for (Cat cat : catList) {
			System.out.println(cat.getName());
		}
		
	}

}

   在客户端调用webservice暴露的接口，然后获得的值是list类型的，然后通过遍历获取对象的值。

运行结果：

孙悟空,您好现在时间是：Thu Aug 13 12:05:02 CST 2015
garfield
机器猫