java.lang.NumberFormatException: For input string: 'nu'

java.lang.NumberFormatException: For input string: "nu"
java.lang.NumberFormatException: For input string: "nu" 
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) 
at java.lang.Integer.parseInt(Integer.java:492) 
at com.jaspersoft.jasperserver.api.metadata.common.service.impl.Cipherer.dehexify(Cipherer.java:215) 
at com.jaspersoft.jasperserver.api.metadata.common.service.impl.Cipherer.decode(Cipherer.java:154) 
at com.jaspersoft.jasperserver.export.modules.auth.beans.UserBean.copyTo(UserBean.java:128) .....

JasperReport Server v5.5 contained a defect, #35723, characterized by incorrectly encypted data in user password tags of js-exports. This can cause an exception upon import in circumstances where the user can an empty/blank/null password in the JIUSER table.

This empty/blank/null password circumstance is typically associated with externally authenticated users.

Resolution:

Two options exist for resolution:

1. Manually edit each individual user's .xml file, removing 'null' from the password element, then import.  Find/replace tools (ReplaceText for win OS) can be executed against the export's directories of users.

   find:

   <password>ENC&lt;null&gt;</password>
   

   replace with:

   <password>ENC&lt;&gt;</password>
   

   Example sed commands: 

   sed -i 's/null//g' *.xml
   

   OR more robust 

   sed -i 's/ENC\&lt\;null\&gt\;/ENC\&lt\;\&gt\;/g'; *
   

2. Patch your JasperReport Server v5.5 instance with the cumulative hotfix patch & re-run the original export. 

Ref. Case #00050467