Chris Wilson created TIKA-912:
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Summary: Response charset encoding not declared, and depends on
host OS (Windows/Linux)
Key: TIKA-912
URL: https://issues.apache.org/jira/browse/TIKA-912
Project: Tika
Issue Type: Bug
Components: server
Affects Versions: 1.1
Environment: java version "1.6.0_26"
Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
Java HotSpot(TM) Server VM (build 20.1-b02, mixed mode)
java version "1.6.0_31"
Java(TM) SE Runtime Environment (build 1.6.0_31-b05)
Java HotSpot(TM) Client VM (build 20.6-b01, mixed mode, sharing)
Reporter: Chris Wilson
When the response to the /tika servlet contains non-ASCII characters, Tika
doesn't tell us what encoding it's using, and the encoding differs depending on
which OS the server is running on.
This is a server running on Tomcat on Linux:
{code}
chris@lap-x201:~/projects/atamis-intranet/django/intranet$ curl -i -T
documents/fixtures/smartquote-bullet.docx http://localhost:8080/tika/tika |
hexdump -C
00000000 48 54 54 50 2f 31 2e 31 20 31 30 30 20 43 6f 6e |HTTP/1.1 100 Con|
00000010 74 69 6e 75 65 0d 0a 0d 0a 48 54 54 50 2f 31 2e |tinue....HTTP/1.|
00000020 31 20 32 30 30 20 4f 4b 0d 0a 53 65 72 76 65 72 |1 200 OK..Server|
00000030 3a 20 41 70 61 63 68 65 2d 43 6f 79 6f 74 65 2f |: Apache-Coyote/|
00000040 31 2e 31 0d 0a 43 6f 6e 74 65 6e 74 2d 54 79 70 |1.1..Content-Typ|
00000050 65 3a 20 74 65 78 74 2f 70 6c 61 69 6e 0d 0a 54 |e: text/plain..T|
00000060 72 61 6e 73 66 65 72 2d 45 6e 63 6f 64 69 6e 67 |ransfer-Encoding|
00000070 3a 20 63 68 75 6e 6b 65 64 0d 0a 44 61 74 65 3a |: chunked..Date:|
00000080 20 46 72 69 2c 20 30 34 20 4d 61 79 20 32 30 31 | Fri, 04 May 201|
00000090 32 20 31 39 3a 34 30 3a 35 34 20 47 4d 54 0d 0a |2 19:40:54 GMT..|
000000a0 0d 0a e2 80 99 0a e2 80 a2 09 0a |...........|
000000ab
{code}
And this is a server running on Tomcat on Windows:
{code}
chris@lap-x201:~/projects/atamis-intranet/django/intranet$ curl -i -T
documents/fixtures/smartquote-bullet.docx http://localhost:9080/tika/tika |
hexdump -C
00000000 48 54 54 50 2f 31 2e 31 20 31 30 30 20 43 6f 6e |HTTP/1.1 100 Con|
00000010 74 69 6e 75 65 0d 0a 0d 0a 48 54 54 50 2f 31 2e |tinue....HTTP/1.|
00000020 31 20 32 30 30 20 4f 4b 0d 0a 53 65 72 76 65 72 |1 200 OK..Server|
00000030 3a 20 41 70 61 63 68 65 2d 43 6f 79 6f 74 65 2f |: Apache-Coyote/|
00000040 31 2e 31 0d 0a 43 6f 6e 74 65 6e 74 2d 54 79 70 |1.1..Content-Typ|
00000050 65 3a 20 74 65 78 74 2f 70 6c 61 69 6e 0d 0a 54 |e: text/plain..T|
00000060 72 61 6e 73 66 65 72 2d 45 6e 63 6f 64 69 6e 67 |ransfer-Encoding|
00000070 3a 20 63 68 75 6e 6b 65 64 0d 0a 44 61 74 65 3a |: chunked..Date:|
00000080 20 46 72 69 2c 20 30 34 20 4d 61 79 20 32 30 31 | Fri, 04 May 201|
00000090 32 20 31 39 3a 33 39 3a 35 32 20 47 4d 54 0d 0a |2 19:39:52 GMT..|
000000a0 0d 0a 92 0a 95 09 0a |.......|
000000a7
{code}
As you can see, the data (last few bytes) is encoded differently. The Linux
server encodes it as UTF-8, while Windows is using something strange, probably
Windows-1252, where 0x92 is a curly quote and 0x95 is a bullet point.
A client can't know what encoding the server used, because the Content-Type is
just text/plain with no encoding.
Ideally I would like it to use UTF-8 always, so that the client doesn't have to
do extra work to decode it. The attached patch does that, and declares it.
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