Java Map 到 前台json串

JSONArray j = new JSONArray();
		
		Set<String> set=params.keySet();
		if(null!=set&&!set.isEmpty()){
			Map<String,String> jsonMap = new HashMap<String,String>();
			for (Iterator<String> iterator = set.iterator(); iterator.hasNext();) {
				String key = (String) iterator.next();
				jsonMap.put(key,params.get(key));
			}
			j.add(jsonMap);
		}
		System.out.println("转换后的JSON串为："+((JSON)j).toString());
		return ((JSON)j).toString();

 JSP

<%@ page import="net.sf.json.*"%>
<%@ page import="java.io.Serializable"%>



json=eval('<%=toJson(map)%>');