http://code.alibabatech.com/wiki/display/FastJSON/TypeReference

public static class Bean {
private int id;
private String name;
public Bean(){
}
public Bean(int id, String name){
this.id = id;
this.name = name;
}
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;}
}

/////////////////////

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;

String text;

{
List list = new ArrayList();
List mapList = new ArrayList();

Map<String, Bean> map = new HashMap<String, Bean>();
map.put("a", new Bean(123, "马加爵"));
map.put("b", new Bean(234, "药家鑫"));
map.put("c", new Bean(456, "刘＋伟"));

mapList.add(map);

list.add(mapList);

text = JSON.toJSONString(list);
}

System.out.println(text);

// text = [[{"b":{"name":"药家鑫","id":234},"c":{"name":"刘＋伟","id":456},"a":{"name":"马加爵","id":123}}]]
List<List<Map<String, Bean>>> list = JSON.parseObject(text, new TypeReference< List<List<Map<String, Bean>>> >() {}); // 注意这里
Map<String, Bean> map = list.get(0).get(0);

Assert.assertEquals(3, map.size());

Assert.assertEquals(123, ((Bean) map.get("a")).getId());
Assert.assertEquals(234, ((Bean) map.get("b")).getId());
Assert.assertEquals(456, ((Bean) map.get("c")).getId());

Assert.assertEquals("马加爵", ((Bean) map.get("a")).getName());
Assert.assertEquals("药家鑫", ((Bean) map.get("b")).getName());
Assert.assertEquals("刘＋伟", ((Bean) map.get("c")).getName());