java map字符串转json对象_Map转json数据，json数据转换为Map

package august;

import java.util.HashMap;

import java.util.Map;

import java.util.Set;

public class JsonType {

public static String simpleMapToJsonStr(Map map){

if(map==null||map.isEmpty()){

return "null";

}

String jsonStr = "{";

Set> keySet = map.keySet();

for (Object key : keySet) {

jsonStr += "\""+key+"\":\""+map.get(key)+"\",";

}

jsonStr = jsonStr.substring(1,jsonStr.length()-2);

jsonStr += "}";

return jsonStr;

}

//{"pass":"4355","name":"12342","wang":"fsf"}

public Map getData(String str){

String sb = str.substring(1, str.length()-1);

String[] name = sb.split("\\\",\\\"");

String[] nn =null;

Map map = new HashMap();

for(int i= 0;i

nn = name[i].split("\\\":\\\"");

map.put(nn[0], nn[1]);

}

return map;

}

public static void main(String args[]){

Map map = new HashMap();

map.put("name", "12342");

map.put("pass", "4355");

map.put("jos", "999");

map.put("wang", "999");

JsonType jsonType = new JsonType();

String mm = jsonType.simpleMapToJsonStr(map);

System.out.println(mm);

Map mp = jsonType.getData(mm);

System.out.println(mp.get("wang"));

}

}