javaを使用して次のコードスニペットからすべてのhttpリンクを抽出するには？

Question

カスタム結果から次の結果が得られました。

{ 
    "kind": "customsearch#search", 
    "url": { 
     "type": "application/json", 
     "template": "https://www.googleapis.com/customsearch/v1?q={searchTerms}& ={count?}& start={startIndex?}&lr={language?}&safe={safe?}&cx={cx?}&cref={cref?}&sort={sort?}&filter={filter?}&gl={gl?}&cr={cr?}&googlehost={googleHost?}&c2coff={disableCnTwTranslation?}&hq={hq?}&hl={hl?}&nsc={nsc?}&siteSearch={siteSearch?}&siteSearchFilter={siteSearchFilter?}&exactTerms={exactTerms?}&excludeTerms={excludeTerms?}&linkSite={linkSite?}&orTerms={orTerms?}&relatedSite={relatedSite?}&dateRestrict={dateRestrict?}&lowRange={lowRange?}&highRange={highRange?}&searchType={searchType}&fileType={fileType?}&rights={rights?}&imgSize={imgSize?}&imgType={imgType?}&imgColorType={imgColorType?}&imgDominantColor={imgDominantColor?}&alt=json" 
    }, 
    "queries": { 
     "nextPage": [ 
      { 
       "title": "Google Custom Search - flowers", 
       "totalResults": 10300000, 
       "searchTerms": "flowers", 
       "count": 10, 
       "startIndex": 11, 
       "inputEncoding": "utf8", 
       "outputEncoding": "utf8", 
       "cx": "013036536707430787589:_pqjad5hr1a" 
      } 
     ], 
     "request": [ 
      { 
       "title": "Google Custom Search - flowers", 
       "totalResults": 10300000, 
       "searchTerms": "flowers", 
       "count": 10, 
       "startIndex": 1, 
       "inputEncoding": "utf8", 
       "outputEncoding": "utf8", 
       "cx": "013036536707430787589:_pqjad5hr1a" 
      } 
     ] 
    }, 
    "context": { 
     "title": "Custom Search" 
    }, 
    "items": [ 
     { 
      "kind": "customsearch#result", 
      "title": "Flower - Wikipedia, the free encyclopedia", 
      "htmlTitle": "<b>Flower</b> - Wikipedia, the free encyclopedia", 
      "link": "http://en.wikipedia.org/wiki/Flower", 
      "displayLink": "en.wikipedia.org", 
      "snippet": "A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Magnoliophyta, ...", 
      "htmlSnippet": "A <b>flower</b>, sometimes known as a bloom or blossom, is the reproductive structure <br> found in flowering plants (plants of the division Magnoliophyta, <b>... </b>", 
      "pagemap": { 
       "RTO": [ 
        { 
         "format": "image", 
         "group_impression_tag": "prbx_kr_rto_term_enc", 
         "Opt::max_rank_top": "0", 
         "Opt::threshold_override": "3", 
         "Opt::disallow_same_domain": "1", 
         "Output::title": "<b>Flower</b>", 
         "Output::want_title_on_right": "true", 
         "Output::num_lines1": "3", 
         "Output::text1": "꽃은 식물 에서 씨 를 만들어 번식 기능을 수행하는 생식 기관 을 말한다. 꽃을 형태학적으로 관찰하여 최초로 총괄한 사람은 식물계를 24강으로 분류한 린네 였다. 그 후 꽃은 식물분류학상중요한 기준이 되었다.", 
         "Output::gray1b": "- 위키백과", 
         "Output::no_clip1b": "true", 
         "UrlOutput::url2": "http://en.wikipedia.org/wiki/Flower", 
         "Output::link2": "위키백과 (영문)", 
         "Output::text2b": " ", 
         "UrlOutput::url2c": "http://ko.wikipedia.org/wiki/꽃", 
         "Output::link2c": "위키백과", 
         "result_group_header": "백과사전", 
         "Output::image_url": "http://www.gstatic.com/richsnippets/b/fcb6ee50e488743f.jpg", 
         "image_size": "80x80", 
         "Output::inline_image_width": "80", 
         "Output::inline_image_height": "80", 
         "Output::image_border": "1" 
        } 
       ] 
      } 
     } 
    ] 
} 

javaを使用して上記のコードからすべてのhttpsリンクを抽出するにはどうすればよいですか？

Answer 1

JSONの解析を怠って無視し、結果全体をStringとして扱い、正規表現を使用してURLを照合することができます。

String httpLinkPattern = "https?://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]"; 
Pattern p = Pattern.compile(httpLinkPattern); 
Matcher m = p.matcher(jsonResult); 
while (m.find()) 
    System.out.println("Found http link: "+m.group()); 

Answer 2

あなたは操作のための文字列にあなたの応答を変換し、ひいてはURLのように行う必要があり、その後以下、JSONライブラリを使用して反対抽出するために探している場合。

public List<String> extractUrls(String input) 
    { 
    List<String> result = new ArrayList<String>(); 
    Pattern pattern = 
     Pattern.compile("\\b(((ht|f)tp(s?)\\:\\/\\/|~\\/|\\/)|www.)" + "(\\w+:\\w+@)?(([-\\w]+\\.)+(com|org|net|gov" 
      + "|mil|biz|info|mobi|name|aero|jobs|museum" + "|travel|[a-z]{2}))(:[\\d]{1,5})?" 
      + "(((\\/([-\\w~!$+|.,=]|%[a-f\\d]{2})+)+|\\/)+|\\?|#)?" + "((\\?([-\\w~!$+|.,*:]|%[a-f\\d{2}])+=?" 
      + "([-\\w~!$+|.,*:=]|%[a-f\\d]{2})*)" + "(&(?:[-\\w~!$+|.,*:]|%[a-f\\d{2}])+=?" + "([-\\w~!$+|.,*:=]|%[a-f\\d]{2})*)*)*" 
      + "(#([-\\w~!$+|.,*:=]|%[a-f\\d]{2})*)?\\b"); 

    Matcher matcher = pattern.matcher(input); 
    while (matcher.find()) 
    { 
     result.add(matcher.group()); 
    } 

    return result; 
    } 

用途：

List<String> links = extractUrls(jsonResponseString); 
    for (String link : links) 
    { 
     System.out.println(link); 
    } 

Answer 3

これを行うには、JSONパーサーを使用してください。私はそれが最高だと思う。この正規表現は、あなたの目的のために動作します

Java code to parse JSON

Answer 4

https?://.*?\.(org|com|net|gov)/.*?(?=")

素敵例えば、以下のリンクを参照してください。 http://regexr.com?30nm2