尝试在 Java 中搜索 JSON

Question

我正在使用 Marvel API 尝试根据用户在搜索框中输入的内容来获取英雄的名字。我很确定搜索功能有效，因为它会搜索常规数组，但是我试图让它通过 JSONArray 搜索。以下是我目前所拥有的。

try {
            //This is the input stream section. No idea why these need to be here but they are
            //in = input
            InputStream in = new BufferedInputStream(urlConnection.getInputStream());
            //bin = buffered input.... i think.
            BufferedReader bin = new BufferedReader(new InputStreamReader(in));
            //temp string to hold each line that's read from the reader
            String inputLine;

            //this keeps adding the lines to the string builder
            while ((inputLine = bin.readLine()) != null) {
                sb.append(inputLine);
            }

            //putting the string builder into a json object
            JSONObject jsonObject = new JSONObject(sb.toString());

            //Checking if the jsonObject has a response inside of it.
            //If there is one however it is false then no results are found.

            if (jsonObject.has("Response") && jsonObject.getString("Response").equals("False")){
                error = true;
            } else{
                JSONArray results = jsonObject.getJSONArray("name");
            }

这是我很确定是问题的部分，因为我认为它不会出现在其中包含名称的 JSON 部分。下面有一个 JSON 示例，当用户搜索“船长”这个词时，结果是这样的

object      {7}
    code    :   200
    status  :   Ok
    copyright   :   © 2020 MARVEL
    attributionText :   Data provided by Marvel. © 2020 MARVEL
    attributionHTML :   <a href=\"http://marvel.com\">Data provided by Marvel. © 2020 MARVEL</a>
    etag    :   75d3eb0f8a6fd4ce06372a8e382af0fe85ea966c
    data        {5}
         offset :   0
         limit  :   10
         total  :   19
         count  :   10
         results        [10]
           0        {11}
                      id    :   1009220
                      name  :   Captain America
                      description   :   Vowing to serve his country any way he could, young Steve Rogers 
                      took the super soldier serum to become America's one-man army. Fighting for the 
                      red, white and blue for over 60 years, Captain America is the living, breathing 
                      symbol of freedom and liberty.
                      modified  :   2020-04-04T19:01:59-0400
                      thumbnail     {2}
                      resourceURI   :   http://gateway.marvel.com/v1/public/characters/1009220
                      comics        {4}
                      series        {4}
                      stories       {4}
                      events        {4}
                      urls      [3]
                      1     {11}
                      2     {11}
                      3     {11}
                      4     {11}
                      5     {11}
                      6     {11}
                      7     {11}
                      8     {11}
                      9     {11}

我需要知道为什么它不会只将 JSON 的名称部分添加到 JSONArray。当前发生的所有情况是，当用户搜索某些内容时，以这种方式尝试时什么也没有出现。任何帮助表示赞赏。

Answer 1

如果我理解正确的话，name 字段是一个字符串，它是results 数组的一个元素，它本身就是data JSON 对象的子对象。要访问results 数组，请尝试：

JSONArray results = jsonObject.getJSONObject("data").getJSONArray("results")

然后您可以像这样访问索引i 处的单个结果名称：

String name_i = results.getJSONObject(i).getString("name")

希望这会有所帮助。