強大的Java 的HTML 解析器，jsoup 1.7.1 發布

jopen 12年前發布 | 14K 次閱讀 jsoup

jsoup 是一款 Java 的HTML 解析器，可直接解析某個URL地址、HTML文本內容。它提供了一套非常省力的API，可通過DOM，CSS以及類似于JQuery的操作方法來取出和操作數據。

jsoup的主要功能如下：

  1. 從一個URL，文件或字符串中解析HTML；

  2. 使用DOM或CSS選擇器來查找、取出數據；

  3. 可操作HTML元素、屬性、文本；
    4. </ol>

    本站還翻譯了官方的CookBook中文文檔:http://www.baiduhome.net/jsoup

    示例代碼：

    File input = new File("/tmp/input.html");
Document doc = Jsoup.parse(input, "UTF-8", "

    Element content = doc.getElementById("content");
Elements links = content.getElementsByTag("a");
for (Element link : links) {
  String linkHref = link.attr("href");
  String linkText = link.text();
}</pre> 
    
jsoup 1.7.1 發布了，該版本在性能和穩定性方面都有不少提升，下載地址：
      

    • jsoup-1.7.1.jar core library
      • 

    • jsoup-1.7.1-sources.jar optional sources jar
      • 

    • jsoup-1.7.1-javadoc.jar optional javadoc jar
      • 
</ul>
      

      改進記錄:
      

      

      - 改進解析時間，比之前的版本快2.3x倍，降低了內存消耗。
      

      - 選擇元素時減少內存消耗和垃圾收集。
      

      - 刪除不必要的Tag.valueOf同步，從而使多線程解析，運行速度更快。
      

      - Introduced finer granularity of exceptions in Jsoup.connect, including HttpStatusException and UnsupportedMimeTypeException, allowing programmers better control of error cases.
      

      - In Jsoup.clean, allow custom Document.OutputSettings, to control pretty printing, character set, and entity escaping.
      

      - Whitespace normalise document.title() output.
      

      - In Jsoup.connect, fail faster if the return content type is not supported.
      

      - Made entity decoding less greedy, so that non-entities are less likely to be incorrectly treated as entities.
      

      - In Jsoup.connect, enforce a connection disconnect after every connect. This precludes keep-alive connections to the same host, but in practise many implementations will leak connections, particularly on error.
      

      - 如果服務器不指定Content-Type頭，把它當作OK。
      

      - 如果服務器返回一個不支持的字符集頭，試圖解碼的默認字符集（UTF8）的內容，而不是想逃與不支持的字符集異常。
      

      

      

      Bug 修復:
      

      - Fixed an issue when determining the Windows-1254 character-set from a meta tag when run in the Turkish locale.
      

      - Fixed whitespace preservation in textarea tags.
      

      - Fixed an issue that prevented frameset documents to be cleaned by the Cleaner.
      

      - Fixed an issue when normalising whitespace for strings containing high-surrogate characters.
      
</div>
after every connect. This precludes keep-alive connections to the same host, but in practise many implementations will leak connections, particularly on error. - If a server doesn't specify a content-type header, treat that as OK. - If a server returns an unsupported character-set header, attempt to decode the content with the default charset (UTF8), instead of bailing with an unsupported charset exception. Bug fixes: - Fixed an issue when determining the Windows-1254 character-set from a meta tag when run in the Turkish locale. - Fixed whitespace preservation in textarea tags. - Fixed an issue that prevented frameset documents to be cleaned by the Cleaner. - Fixed an issue when normalising whitespace for strings containing high-surrogate characters.
      
                    
      
                        
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