拼接Josn 串（list存map）

/**

*

* @param list

* @return _Json（单层）；

* @throws Exception

*/

public static String getJson(List<Map<String,String>>list) throws Exception{

String data = "";

if(list != null){

data = "";

for(Map<String,String>map : list){

StringBuffer m = new StringBuffer();

m.append("{");

for(String key : map.keySet()){

m.append("\"" +key + "\":\""+map.get(key)+ "\",");

}

String subString = m.substring(0, m.length() -1)+"}";

data += subString + ",";

}

data = data.substring(0,data.length() - 1);

}else{

data = "";

}

return data;

}