CLASS转成JSON

public static String jsonFormat(Object obj){
  Class c = obj.getClass();
  Field fields[] = c.getDeclaredFields();
  StringBuffer sb = new StringBuffer();
  sb.append("{");
  try {
   for(int i=0; i<fields.length; i++){
    String name = fields[i].getName();
    fields[i].setAccessible(true);
    String value = fields[i].get(obj).toString();
    sb.append("'"+name+"':"+"'"+value+"',");
   }
  } catch (Exception e) {
  }
  sb.append("}");
  return sb.toString();
 }