JSON格式的字符串到字符串数组 [英] JSON formatted string to String Array

问题描述

我用一个简单的PHP API（即我写的），返回一个JSON格式的字符串，如：

I'm using a simple php API (that I wrote) that returns a JSON formatted string such as:

[["Air Fortress","5639"],["Altered Beast","6091"],["American Gladiators","6024"],["Bases Loaded II: Second Season","5975"],["Battle Tank","5944"]]

我现在有一个包含JSON格式的字符串一个字符串，但需要将其转换成两个String数组，一个名字和一个ID。是否有任何快速路径实现这一点？

I now have a String that contains the JSON formatted string but need to convert it into two String arrays, one for name and one for id. Are there any quick paths to accomplishing this?

推荐答案

您可以使用 org.json 库到你的JSON字符串转换为 JSONArray 然后你可以遍历。

You can use the org.json library to convert your json string to a JSONArray which you can then iterate over.

例如：

String jsonString = "[[\"Air Fortress\",\"5639\"],[\"Altered Beast\",\"6091\"],[\"American Gladiators\",\"6024\"],[\"Bases Loaded II: Second Season\",\"5975\"],[\"Battle Tank\",\"5944\"]]";

List<String> names = new ArrayList<String>();
List<String> ids = new ArrayList<String>();
JSONArray array = new JSONArray(jsonString);
for(int i = 0 ; i < array.length(); i++){
    JSONArray subArray = (JSONArray)array.get(i);
    String name = (String)subArray.get(0);
    names.add(name);
    String id = (String)subArray.get(1);
    ids.add(id);
}

//to convert the lists to arrays
String[] nameArray = names.toArray(new String[0]);
String[] idArray = ids.toArray(new String[0]);

您甚至可以使用正则表达式来完成任务，虽然它的最好使用一个JSON库来解析JSON：

You can even use a regex to get the job done, although its much better to use a json library to parse json:

List<String> names = new ArrayList<String>();
List<String> ids = new ArrayList<String>();
Pattern p = Pattern.compile("\"(.*?)\",\"(.*?)\"") ;
Matcher m = p.matcher(s);
while(m.find()){
    names.add(m.group(1));
    ids.add(m.group(2));
}

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