Android JSON CharSet UTF-8 问题

Posted 2023-02-24

【中文标题】Android JSON CharSet UTF-8 问题

【英文标题】：Android JSON CharSet UTF-8 problems

【发布时间】：2012-02-22 14:19:43

【问题描述】：

我目前正在开发一个 android 应用程序，该应用程序从提供 JSON 数据的 API 获取数据。 我将 JSON 数据的项目存储为字符串，这会导致出现一些奇怪的字符（例如 'Â'）。我理解这与字符集有关，因此我将 InputStreamReader 设置为“UTF-8”，但似乎并没有解决问题。

       URL hukd = new URL(requestUrl);
        URLConnection tc = hukd.openConnection();
        BufferedReader in = new BufferedReader(new InputStreamReader(tc.getInputStream(), "UTF-8"));
        String line = in.readLine();
        Log.d("line :", line);
        JSONObject obj = new JSONObject(line);
        JSONArray ja = obj.getJSONObject("deals").getJSONArray("items");
        for (int i = 0; i < ja.length(); i++)  // each deal
            JSONObject jo = (JSONObject) ja.get(i);
            // make the deal
            Deal d = new Deal(jo.getString("title"),
                    jo.getString("description"),
                    jo.getString("price"),jo.getString("temperature"), 
                    jo.getJSONObject("merchant").getString("name"),
                    jo.getString("deal_image"),
                    jo.getString("deal_image_highres"));
            listItems.add(d);
            Log.d("Deal:", d.toString());
        

Log.d "line" 给出

01-30 19:56:01.909: D/line :(610): "deals":"items":["title":"Absolute steal ** Harmony one remote in store only Comet \u00c2\u00a349.98 **","deal_link":"http:\/\/www.hotukdeals.com\/deals\/absolute-steal-harmony-one-remote-store-only-comet-49-98-1131779?aui=465","mobile_deal_link":"http:\/\/m.hotukdeals.com\/deals\/absolute-steal-harmony-one-remote-store-only-comet-49-98-1131779?aui=465","deal_image":"http:\/\/www.hotukdeals.com\/images\/threads\/1131779_1.jpg","description":"Was just in comet getting two new washing machines when I stumbled upon a load of Harmony ones on the end of an isle \u00e2\u0080\u00a6. I nearly blew a fuse when I saw they had been reduced from \u00c2\u00a380.00 to under \u00c2\u00a350 as I just bought 3 of these before xmas at \u00c2\u00a368.00 ea which I thought was a true bargain.\r\n\r\nI asked they guy and he said they were stopping doing them as far as he knew and that the deal should be nation wide this must be the  cheapest I've seen for the UK version ever  even though this is the Harmony one and not the one + is it still a great remote which does just about everything you could want it to. \r\n\r\n** note I don\u00e2\u0080\u0099t have a picture of the price tag but I have these at my home and are 100% that it\u00e2\u0080\u0099s the harmony one on sale hope this helps some of you guys  and girls out  **\r\n\r\nThe Logitech Harmony One remote control lets you replace 15 remotes with one, easy to use device. With its clear, touch screen display this Harmony learning remote control makes controlling the most complex of systems easy. A graphic interface allows you, for example, to watch a DVD at the touch of a button.\r\n","submit_time":"48 minutes ago","hot_time":"1 minute ago","poster_name":"no1son","temperature":106.88999939,"price":49.98,"timestamp":1327950390,"expired":"false","forum":"name":"Deals","url_name":"deals","category":"name":"Audiovisual","url_name":"audiovisual","merchant":"name":"Comet","url_name":"comet.co.uk","tags":"items":["name":"leeds"],"deal_image_highres":"http:\/\/www.hotukdeals.com\/images\/threads\/high-res\/1131779_1.jpg","title":"Youth Brazil Shirt \u00c2\u00a34 at Very\/Littlewoods","deal_link":"http:\/\/www.hotukdeals.com\/deals\/youth-brazil-shirt-4-very-littlewoods-1131765?aui=465","mobile_deal_link":"http:\/\/m.hotukdeals.com\/deals\/youth-brazil-shirt-4-very-littlewoods-1131765?aui=465","deal_image":"http:\/\/www.hotukdeals.com\/images\/threads\/1131765_1.jpg","description":"2010 Brazil shirt by Nike\r\nAvailable in all youth sizes.\r\nFree delivery through collect plus","submit_time":"1 hour, 4 minutes ago","hot_time":"14 minutes ago","poster_name":"ericagradus","temperature":161.479995728,"price":4,"timestamp":1327949447,"expired":"false","forum":"name":"Deals","url_name":"deals","category":"name":"Fashion","url_name":"fashion","merchant":"name":"Very","url_name":"very.co.uk","tags":"items":["name":"brazil shirt","name":"very","name":"littlewoods"],"deal_image_highres":"http:\/\/www.hotukdeals.com\/images\/threads\/high-res\/1131765_1.jpg","title":"Milk Chocolate Mikado 29p at Home Bargains","deal_link":"http:\/\/www.hotukdeals.com\/deals\/milk-chocolate-mikado-29p-home-bargains-1130742?aui=465","mobile_deal_link":"http:\/\/m.hotukdeals.com\/deals\/milk-chocolate-mikado-29p-home-bargains-1130742?aui=465","deal_image":"http:\/\/www.hotukdeals.com\/images\/threads\/1130742_1.jpg","description":"Was in Home Bargains in Lancaster and they had the MIlk Chocolate Mikado for 29p. The white and hazelnut were 59p. Didn't check the sell by day as it took all my will power to resist haha!\r\n\r\nSorry if this is a duplicate I did look for it but couldn't find it.","submit_time":"1 day, 3 hours ago","hot_time":"14 minutes ago","poster_name":"cazi77","temperature":146.61000061,"price":0.29,"timestamp":1327853963,"expired":"false","forum":"name":"Deals","url_name":"deals","category":"name":"Groceries","url_name":"groceries","merchant":"name":"Home Bargains","url_name":"homebargains.co.uk","tags":"items":[],"deal_image_highres":"http:\/

有什么想法吗？

【问题讨论】：

您是否也尝试过其他编码，例如“ISO-8859-1”？我用这个解决了一些问题……但是它是针对重音字母的……哪些字符给你带来了这个问题？

那么 Log.d("line :", line) 的输出究竟是什么？

抱歉忘记放日志输出（感谢 Jens）。

尝试 BufferedReader in = new BufferedReader(new InputStreamReader(tc.getInputStream(),"iso-8859-1"),8);

感谢 Scalar 的建议。不幸的是，它仍然显示奇怪的字符。

【参考方案1】：

尝试以下 sn-p 代码，它在我遇到类似问题时对我有帮助：

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

【讨论】：

我们为什么要使用这样一个扭曲的函数？它必须包含在 try catch 块中。

我个人喜欢将我所有的 json 解析包含在 try catch 块中以防万一。

【参考方案2】：

我知道这是几年后的事了，但我想出了一个比这个更可靠的解决方案，它不需要所有的编码额外的东西

这是我在寻找其他东西时偶然发现的，但它确实有效：

"" + jo.opt("name");

这样做的目的是将结果作为原始对象，并将其放在空字符串的末尾强制它变成字符串格式 - 当然，如果条目最初不是字符串，它可能会给出模糊的结果，所以也许先尝试将其作为字符串抓取

我有这样的事情：

String s = "";
try 
    s = jo.getString("name");
    s = "" + jo.opt("name");
 catch (Exception e) 
    Log.e("JSON error", "error:" + e.toString());

这将测试字符串是否存在，然后将其替换为完全编码的版本

我希望这对将来的某人有所帮助:-)