android - JsonArray 解析

Question

我正在解析一个 json 文件，但收到以下消息：org.json.JSONException: End of input at character 0 of character 0 of the file of the file is：

Answer 1

您确定文件末尾没有空行吗？像这样：

[
{
code: "UNLC",
cours_jour: "40 020",
variation: "0.00"
},
{
code: "UNXC",
cours_jour: "7 450",
variation: "0.00"
}
]
<-- Empty line here!

Answer 2

您的 JSON 对象字段需要用引号封装

IE

{
"code": "BOAC",
"cours_jour": "29 000",
"variation": "-1.69"
}

JSON 文件是如何生成的？

- 编辑

您可以使用以下代码将页面下载为字符串，然后将其转换为 JSONArray，然后拉取每个 JSONObject。您不能在主线程上运行任何 Web 请求，因此要么扩展新的异步任务或线程，要么可以运行以执行以下操作

DefaultHttpClient httpclient = new DefaultHttpClient();
        HttpPost httpost = new HttpPost("http://www.impaxis-securities.com/securities/cours-actions/cours.json");
        httpost.setHeader("Accept", "application/json");
        httpost.setHeader("Content-type", "application/json");
        ResponseHandler<String> responseHandler = new BasicResponseHandler();
        String response;
        try {
                response = httpclient.execute(httpost, responseHandler);
                JSONArray arr = new JSONArray(response);
                int arrLength = arr.length();
                    if(arrLength > 0)
                    {
                        for(int i = 0; i < arrLength; i++)
                        {
                            JSONObject item = arr.getJSONObject(i);
                            String code = item.getString("code");
                            String cours_jour = item.getString("cours_jour");
                            String variation = item.getString("variation");
                            //Either insert to a DB or add to an array list and return it
                        }
                    }
                } 
        catch (ClientProtocolException e) {
            //Issue with web server 
            } 
        catch (IOException e) {
            //Issue with request
            } 
        catch (JSONException e) {
            //ISSUE Parsing JSON from site
        }

- -编辑

我测试了代码，看起来 JSON 插件/REST 服务存在错误

http://drupal.org/node/1433436