Flex处理Java返回的容器类型-优快云博客

本文介绍如何使用BlazeDS框架处理来自Java的List、Set及Map数据类型，并将其转换为Flex应用程序可以理解的形式。通过具体代码示例展示了不同数据结构在客户端和服务端之间的交互过程。

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当然，这个话题是建立在使用BlazeDS处理RemoteObject的情况下的。

1.List和Set

当Java返回List和Set的时候，Flex可以用ArrayCollection进行处理。

		List list = new ArrayList();
		list.add(new Users("abc", "123"));
		list.add(new Users("efg", "123"));
		list.add(new Users("hij", "456"));
		return list;

		Set set = new HashSet();
		set.add(new Users("abc", "123"));
		set.add(new Users("efg", "123"));
		set.add(new Users("hij", "456"));
		return set;

			private function resultHandler(event:ResultEvent):void {
				var array:ArrayCollection = event.result as ArrayCollection;
				var str:String = "";
				for(var i:int = 0; i < array.length; i++) {
					var anUser:Users = array.getItemAt(i) as Users;
					str += anUser.userName + ":" + anUser.passWord + "\n";
				}

				resultMessage.text = str;
			}

2.Map

Map在actionscript中是视为Object的，只需知道Map的key，就可以用".key"来得到Map的value了。

		Map map = new HashMap();
		map.put("one", anUser);
		map.put("two", anUser);
		map.put("three", new Users("abc", "123"));
		map.put("four", new Users("efg", "123"));
		map.put("five", new Users("hij", "456"));
		return map;

			private function resultHandler(event:ResultEvent):void {
				var str:String = "";
				
				var anUser:Users = event.result.one as Users;
				str += anUser.userName + ":" + anUser.passWord + "\n";
				anUser = event.result.two as Users;
				str += anUser.userName + ":" + anUser.passWord + "\n";
				anUser = event.result.three as Users;
				str += anUser.userName + ":" + anUser.passWord + "\n";
				anUser = event.result.four as Users;
				str += anUser.userName + ":" + anUser.passWord + "\n";
				anUser = event.result.five as Users;
				str += anUser.userName + ":" + anUser.passWord + "\n";

				resultMessage.text = str;
			}