2

httpサーバーインターフェイスを介してDirecTVレシーバーと対話するアプリを作成しています。デバイスにクエリを実行して、SJON形式の応答を取得できます。

これが私のサンプルコードです:

- (NSDictionary *) readDVRData
{
    NSMutableData *rData = [[NSMutableData alloc] initWithContentsOfFile:@"./data"];
    //NSLog(@"rData = %@",rData);
    NSString *rString = [[NSString alloc] initWithData:rData encoding:NSUTF8StringEncoding];
    NSLog(@"rString = %@",rString);
    NSError *error;
    SBJSON *json = [[SBJSON new] autorelease];
    NSDictionary *response = [json objectWithString:rString error:&error];
    //NSLog(@"response = %@",response);
    return response;    
}

テストの目的で、応答をデータファイルに保存し、上記の例でデータファイルから読み取っています。NSMutableDataからNSStringへの変換:

NSString *rString = [[NSString alloc] initWithData:rData encoding:NSUTF8StringEncoding];

次の文字が配置されている場合は失敗します。クレームフレーシュのように。参考までに、これはサウスパークのレコーディングのepisodeTitleと説明にありました。

この文字を大文字の「E」だけに変更すると、変換は機能します。このようなものをキャッチするために使用する必要がある別の方法はありますか?または、このような文字を削除する簡単な方法はありますか?変換に失敗する可能性のあるアクセント記号や別の何かであるかどうかは、事前にはわかりませんのでご注意ください。

ありがとう、デイブ

必要に応じて、データファイルのスニペット。テキスト全体を含めますが、文字数の制限が30000の制限を超えています。

{
      "groupId": "1 1 381C3",
      "groupTitle": "South Park",
      "isRecording": false,
      "numItems": 10,
      "numNewItems": 10,
      "programs": [
        {
          "callsign": "COMHD",
          "contentId": "1 1 381C3 198",
          "description": "\"CrÈme Fraiche\" Animation, Comedy. (2010)  Trey Parker,  Matt Stone. Randy's obsession with the Food Network forces Sharon to explore a new interest of her own. Series.",
          "duration": 1800,
          "episodeTitle": "CrÈme Fraiche",
          "expiration": "0",
          "isHd": true,
          "isPartial": false,
          "isPpv": false,
          "isRecording": false,
          "isViewed": false,
          "isVod": false,
          "keepUntilFull": true,
          "major": 249,
          "minor": 65535,
          "programId": "6937756",
          "rating": "TV-MA-L",
          "startTime": 1290056400,
          "title": "South Park",
          "uniqueId": "5397375192530140068"
        },
        {
          "callsign": "COMHD",
          "contentId": "1 1 381C3 197",
          "description": "\"Coon vs. Coon & Friends\" Animation, Comedy. (2010)  Trey Parker,  Matt Stone. Coon and Friends find themselves at the mercy of Cartman who now has the dark lord doing his bidding; Kenny wrestles with the curse of his super power. Series.",
          "duration": 1800,
          "episodeTitle": "Coon vs. Coon & Friends",
          "expiration": "0",
          "isHd": true,
          "isPartial": false,
          "isPpv": false,
          "isRecording": false,
          "isViewed": false,
          "isVod": false,
          "keepUntilFull": true,
          "major": 249,
          "minor": 65535,
          "programId": "6918387",
          "rating": "TV-MA-L",
          "startTime": 1289444400,
          "title": "South Park",
          "uniqueId": "8476957599452610419"
        },
        {
          "callsign": "COMHD",
          "contentId": "1 1 381C3 196",
          "description": "\"Mysterion Rises\" Animation, Comedy. (2010)  Trey Parker,  Matt Stone. Mysterion's true identity is revealed; scorned by fellow superheroes, one goes out for revenge. Series.",
          "duration": 1800,
          "episodeTitle": "Mysterion Rises",
          "expiration": "0",
          "isHd": true,
          "isPartial": false,
          "isPpv": false,
          "isRecording": false,
          "isViewed": false,
          "isVod": false,
          "keepUntilFull": true,
          "major": 249,
          "minor": 65535,
          "programId": "6896823",
          "rating": "TV-MA-L",
          "startTime": 1288843200,
          "title": "South Park",
          "uniqueId": "2113731123121326471"
        },
        {
          "callsign": "COMHD",
          "contentId": "1 1 381C3 0",
          "description": "Animation, Comedy.  Trey Parker,  Matt Stone. The adventures of four boys who live in South Park, Colo. Series.",
          "duration": 1800,
          "episodeTitle": "",
          "expiration": "0",
          "isHd": true,
          "isPartial": false,
          "isPpv": false,
          "isRecording": false,
          "isViewed": false,
          "isVod": false,
          "keepUntilFull": true,
          "major": 249,
          "minor": 65535,
          "programId": "6830127",
          "rating": "TV-MA-L",
          "startTime": 1288751400,
          "title": "South Park",
          "uniqueId": "2166056034991125062"
        },
        {
          "callsign": "COMHD",
          "contentId": "1 1 381C3 195",
          "description": "\"Coon 2: Hindsight\" Animation, Comedy. (2010)  Trey Parker,  Matt Stone. Coon and friends set out to help the victims of BP's latest catastrophic drilling accident in the Gulf. Series.",
          "duration": 1800,
          "episodeTitle": "Coon 2: Hindsight",
          "expiration": "0",
          "isHd": true,
          "isPartial": false,
          "isPpv": false,
          "isRecording": false,
          "isViewed": false,
          "isVod": false,
          "keepUntilFull": true,
          "major": 249,
          "minor": 65535,
          "programId": "6876407",
          "rating": "TV-MA-L",
          "startTime": 1288238400,
          "title": "South Park",
          "uniqueId": "8615834721021879366"
        },
        {
          "callsign": "COMHD",
          "contentId": "1 1 381C3 194",
          "description": "\"Insheeption\" Animation, Comedy. (2010)  Trey Parker,  Matt Stone. When Stan is sent to the school counselor because he's holding on to an obscene number of useless possessions, he realizes that Mr. Mackey had a hoarding disorder too. Series.",
          "duration": 1783,
          "episodeTitle": "Insheeption",
          "expiration": "0",
          "isHd": true,
          "isPartial": false,
          "isPpv": false,
          "isRecording": false,
          "isViewed": false,
          "isVod": false,
          "keepUntilFull": true,
          "major": 249,
          "minor": 65535,
          "programId": "6857628",
          "rating": "TV-MA-L",
          "startTime": 1287626416,
          "title": "South Park",
          "uniqueId": "1547798106243799673"
        },
        {
          "callsign": "COMHD",
          "contentId": "1 1 381C3 193",
          "description": "\"It's a Jersey Thing\" Animation, Comedy. (2010)  Trey Parker,  Matt Stone. New Jersey is taking over the nation one state at a time, Randy and the boys take a stand as the Jerseyites approach South Park. Series.",
          "duration": 1800,
          "episodeTitle": "It's a Jersey Thing",
          "expiration": "0",
          "isHd": true,
          "isPartial": false,
          "isPpv": false,
          "isRecording": false,
          "isViewed": false,
          "isVod": false,
          "keepUntilFull": true,
          "major": 249,
          "minor": 65535,
          "programId": "6839243",
          "rating": "TV-MA-L",
          "startTime": 1287028800,
          "title": "South Park",
          "uniqueId": "8123622337314668826"
        },
        {
          "callsign": "COMHD",
          "contentId": "1 1 381C3 193",
          "description": "\"It's a Jersey Thing\" Animation, Comedy. (2010)  Trey Parker,  Matt Stone. New Jersey is taking over the nation one state at a time, Randy and the boys take a stand as the Jerseyites approach South Park. Series.",
          "duration": 1784,
          "episodeTitle": "It's a Jersey Thing",
          "expiration": "0",
          "isHd": true,
          "isPartial": false,
          "isPpv": false,
          "isRecording": false,
          "isViewed": false,
          "isVod": false,
          "keepUntilFull": true,
          "major": 249,
          "minor": 65535,
          "programId": "6839243",
          "rating": "TV-MA-L",
          "startTime": 1287021615,
          "title": "South Park",
          "uniqueId": "949183344652655207"
        },
        {
          "callsign": "COMHD",
          "contentId": "1 1 381C3 0",
          "description": "Animation, Comedy.  Trey Parker,  Matt Stone. The adventures of four boys who live in South Park, Colo. Series.",
          "duration": 1800,
          "episodeTitle": "",
          "expiration": "0",
          "isHd": true,
          "isPartial": false,
          "isPpv": false,
          "isRecording": false,
          "isViewed": false,
          "isVod": false,
          "keepUntilFull": true,
          "major": 249,
          "minor": 65535,
          "programId": "6830127",
          "rating": "TV-MA-L",
          "startTime": 1286937000,
          "title": "South Park",
          "uniqueId": "7841891672059226043"
        },
        {
          "callsign": "COMHD",
          "contentId": "1 1 381C3 0",
          "description": "Animation, Comedy.  Trey Parker,  Matt Stone. The adventures of four boys who live in South Park, Colo. Series.",
          "duration": 1800,
          "episodeTitle": "",
          "expiration": "0",
          "isHd": true,
          "isPartial": false,
          "isPpv": false,
          "isRecording": false,
          "isViewed": false,
          "isVod": false,
          "keepUntilFull": true,
          "major": 249,
          "minor": 65535,
          "programId": "6830127",
          "rating": "TV-MA-L",
          "startTime": 1286856000,
          "title": "South Park",
          "uniqueId": "3872435936942587460"
        }
      ]
    }
4

3 に答える 3

2

NSISOLatin1StringEncodingなどの他のエンコーディングを試しましたか?

于 2010-11-29T20:00:52.890 に答える
1

Webサーバーからのエンコーディングの問題である可能性があります。あなたはUTF-8データを期待していますが、それは彼らがあなたに送っているものではないに違いありません。代わりに[NSStringstringWithContentsOfFile:]を使用して読んでみて、何かが変わるかどうかを確認してください。

そのメソッドは非推奨であるため、コンパイラは警告をスローします。実際、代わりにstringWithContentsOfFile:usedEncoding:error:を使用することもできますが、私や他の人は、完全にエンコードされていないデータ(つまり、Webの90%)の古い方法と同様に機能しないようだと報告しています。 :-))。

于 2010-11-29T20:16:03.717 に答える
0

DirecTVユニットの応答のHTTPヘッダーを確認してください。おそらくUTF-8を使用していません。使用しているエンコーディングを把握し、正しい定数をに指定しinitWithData:encoding:ます。

このコマンドを使用して、HTTPヘッダーを表示できます。curl -i http://directv-data-url

于 2010-11-29T20:31:57.233 に答える