java list to json 列表到json转换

//listToJson private String convertListToJson(List<Users> userList) { StringBuilder builder = new StringBuilder(); builder.append('['); for(Users user : userList) { builder.append('{'); builder.append("\"Name\":\"").append(user.getName()).append("\","); builder.append("\"Type\":\"").append(user.getType()).append("\","); builder.append("\"Score\":").append(user.getScore()); builder.append("},"); } builder.deleteCharAt(builder.length()-1); builder.append(']'); return builder.toString(); }