[TIKA-3551] TikaConfig: unspecified attribute of "xml-reader-utils" breaks configuration file parser

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.27, 2.1.0
• Fix Version/s: 2.2.0
• Component/s: config
• Assignee: Unassigned
• Reporter: Sebastian Nagel
• Created: 14/Sep/21 08:25
• Updated: 16/Dec/21 22:29
• Resolved: 14/Sep/21 14:39

Description

The Tika configuration file parser exits with an exception when the XMLReaderUtils are configured in tika-config.xml without specifying all possible attributes, eg. without the attribute maxEntityExpansions (to use the default value):

<xml-reader-utils poolSize="20" />

There's a test whether the attribute value is null - however, getAttribute() returns the empty string if the attribute is not present. The empty string then causes a NumberFormatException:

2021-09-14 09:57:12,357 ERROR o.a.n.p.t.TikaParser [main] Problem loading custom Tika configuration from tika-config.xml
java.lang.NumberFormatException: For input string: ""
        at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) ~[?:?]
        at java.lang.Integer.parseInt(Integer.java:662) ~[?:?]
        at java.lang.Integer.parseInt(Integer.java:770) ~[?:?]
        at org.apache.tika.config.TikaConfig.updateXMLReaderUtils(TikaConfig.java:303) ~[tika-core-1.25.jar:1.25]
        at org.apache.tika.config.TikaConfig.<init>(TikaConfig.java:192) ~[tika-core-1.25.jar:1.25]
        at org.apache.tika.config.TikaConfig.<init>(TikaConfig.java:182) ~[tika-core-1.25.jar:1.25]
        at org.apache.tika.config.TikaConfig.<init>(TikaConfig.java:157) ~[tika-core-1.25.jar:1.25]
        at org.apache.nutch.parse.tika.TikaParser.setConf(TikaParser.java:276) [parse-tika.jar:?]

Issue Links

• links to: GitHub Pull Request #452