Gson将json转成map

1			try {
2				Gson gson = new Gson();	
3				Map<String, String> rtMap = gson.fromJson(json,new TypeToken<Map<String,String>>() {}.getType());    
4				return rtMap;
5			} catch (Exception e) {
6				logger.error("格式化Json异常", e);
7				return null; 
8			}