让我们来看看如何巧用js将list转化为json

发布日期：2017年03月21日文章来源：www.tengways.com

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在传值时常常要用的josn，每次后台list转成josn特别麻烦，于是给大家推荐使用js方法。贴出代码互相学习。

<%-- /**

* 根据页面用户输入的信息形成 Answer 对象的List

* @param answers

* @param question_ids

* @param types

* @return

private List<Answer> toAnswerList(String[] studenAnswers, int[] question_ids,

int[] types,int[] scores) {

List<Answer> answerList = new ArrayList<Answer>();

if(studenAnswers!=null && question_ids!= null && types!= null&& scores!= null){

for (int i = 0; i < studenAnswers.length; i++) {

Answer answer = new Answer();

String studenAnswer = studenAnswers[i];

int type = types[i];

int question_id = question_ids[i];

int score = scores[i];

answer.setQuestion_id(question_id);

answer.setScore(score);

answer.setStudenAnswer(studenAnswer);

answer.setType(type);

answerList.add(answer);

}

return answerList;

}

/**

* 将一个json字串转为list

* @param props

* @return

public static List<Answer> converAnswerFormString(String answer){

if (answer == null || answer.equals(""))

return new ArrayList();

JSONArray jsonArray = JSONArray.fromObject(answer);

List<Answer> list = (List) JSONArray.toCollection(jsonArray,

Answer.class);

return list;

}

/**

* 将一个 Answer 对象的List 生成Json字串

* 是根据客户端页面用户输入的信息生成的

public String getAnswerString(String[] studenAnswers, int[] question_ids,

int[] types,int[] scores) {

List list = toAnswerList(studenAnswers, question_ids,

types, scores);

JSONArray jsonarray = JSONArray.fromObject(list);

return jsonarray.toString();

} --%>

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