Splitter和MapSplitter的用法

Spliter和MapSpliter跟Joiner以及MapJoiner功能正好相反。
用法举例：

Splitter splitter = Splitter.on(",");
		splitter.trimResults();
		List<String> aaaa = splitter.splitToList(a);



Map<String,String> maps = Maps.newHashMap();
		maps.put("id", "1");
		maps.put("name", "2");
		String ss= Joiner.on("&").withKeyValueSeparator("=").join(maps);
		
		maps =Splitter.on("&").withKeyValueSeparator("=").split(ss);