将String转换为Android JSONObject会丢失utf-8 [英] Converting String to Android JSONObject loses utf-8

问题描述

我试图从URL获取(JSON格式)字符串，并将其作为Json对象使用.将String转换为JSONObject时，我丢失了UTF-8编码.

I am trying to get a (JSON formatted) String from a URL and consume it as a Json object. I lose UTF-8 encoding when I convert the String to JSONObject.

这是我用来连接到网址并获取字符串的函数:

This is The function I use to connect to the url and get the string:

private static String getUrlContents(String theUrl) {
    StringBuilder content = new StringBuilder();
    try {
        URL url = new URL(theUrl);
        URLConnection urlConnection = url.openConnection();
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));

        String line;
        while ((line = bufferedReader.readLine()) != null) {
            content.append(line + "\n");
        }
        bufferedReader.close();
    } catch(Exception e) {
        e.printStackTrace();
    }

    return content.toString();
}

当我从服务器获取数据时，以下代码显示正确的字符:

When I get data from server, the following code displays correct characters:

String output = getUrlContents(url);
Log.i("message1", output);

但是当我将输出字符串转换为JSONObject时，波斯字符变成了像这样的问号??????. (消息是JSON中数组的名称)

But when I convert the output string to JSONObject the Persian characters becomes question marks like this ??????. (messages is the name of array in JSON)

JSONObject reader = new JSONObject(output);
String messages = new String(reader.getString("messages").getBytes("ISO-8859-1"), "UTF-8");
Log.i("message2", messages);

推荐答案

您要让Java使用ISO-8859-1将字符串(具有键message)转换为字节，然后从这些字符串创建新的String字节，解释为UTF-8.

You're telling Java to convert the string (with key message) to bytes using ISO-8859-1 and than to create a new String from these bytes, interpreted as UTF-8.

new String(reader.getString("messages").getBytes("ISO-8859-1"), "UTF-8");

您可以简单地使用:

String messages = reader.getString("messages");

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