Apache Tika 1.9 发布，此版本包括一些改进和 bug 修复，详细改进请看更新日志：
* The ability to use the cTAKES clinical text
knowledge extraction system for biomedical data is
now included as a Tika parser (TIKA-1645, TIKA-1642).
* Tika-server allows a user to specify the Tika config
from the command line (TIKA-1652, TIKA-1426).
* Matlab file detection has been improved (TIKA-1634).
* The EXIFTool was added as an External parser
(TIKA-1639).
* If FFMPEG is installed and on the PATH, it is a
usable Parser in Tika now (TIKA-1510).
* Fixes have been applied to the ExternalParser to make
it functional (TIKA-1638).
* Tika service loading can now be more verbose with the
org.apache.tika.service.error.warn system property (TIKA-1636).
* Tika Server now allows for metadata extraction from remote
URLs and in addition it outputs the detected language as a
metadata field (TIKA-1625).
* OUTPUT_FILE_TOKEN not being replaced in ExternalParser
contributed by Pascal Essiembre (TIKA-1620).
* Tika REST server now supports language identification
(TIKA-1622).
* All of the example code from the Tika in Action book has
been donated to Tika and added to tika-examples (TIKA-1562).
* Tika server now logs errors determining ContentDisposition
(TIKA-1621).
* An algorithm for using Byte Histogram frequencies to construct
a Neural Network and to perform MIME detection was added
(TIKA-1582).
* A Bayesian algorithm for MIME detection by probabilistic
means was added (TIKA-1517).
* Tika now incorporates the Apache Spatial Information
System capability of parsing Geographic ISO 19139
files (TIKA-443). It can also detect those files as
well.
* Update the MimeTypes code to support inheritance
(TIKA-1535).
* Provide ability to parse and identify Global Change
Master Directory Interchange Format (GCMD DIF)
scientific data files (TIKA-1532).
* Improvements to detect CBOR files by extension (TIKA-1610).
* Change xerial.org's sqlite-jdbc jar to "provided" (TIKA-1511).
Users will now need to add sqlite-jdbc to their classpath for
the Sqlite3Parser to work.
* ExternalParser.check now catches (suppresses) SecurityException
and returns false, so it's OK to run Tika with a security policy
that does not allow execution of external processes (TIKA-1628).
下载：
Maven 2：http://repo1.maven.org/maven2/org/apache/tika/
Tika是一个内容抽取的工具集合(a toolkit for text extracting)。它集成了POI, Pdfbox 并且为文本抽取工作提供了一个统一的界面。其次，Tika也提供了便利的扩展API，用来丰富其对第三方文件格式的支持。
在当前的0.2-SNAPSHOT版本中， Tika提供了对如下文件格式的支持:
PDF - 通过Pdfbox
MS-* - 通过POI
HTML - 使用nekohtml将不规范的html整理成为xhtml
OpenOffice 格式 - Tika提供
Archive - zip, tar, gzip, bzip等
RTF - Tika提供
Java class - Class解析由ASM完成
Image - 只支持图像的元数据抽取
XML
Tika的API十分便捷，核心是Parser interface，其中定义了一个parse方法：
public void parse(InputStream stream, ContentHandler handler, Metadata metadata)
用stream参数传递需要解析的文件流， 文本内容会被传入handler，而元数据会更新至metadata。
可以使用Tika的ParserUtils工具来根据文件的mime-type来得到一个适当的Parser来进行解析工作。或者Tika还提供了一个AutoDetectParser根据不同的二进制文件的特殊格式 (比如说Magic Code)，来寻找适合的Parser。
软件详情：http://www.apache.org/dist/tika/CHANGES-1.9.txt
下载地址：http://www.apache.org/dyn/closer.cgi/tika/apache-tika-1.9-src.zip
来自:开源中国社区
