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View Jasper Report

 
Greenhorn
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Hi experts , I am trying to view Jasper Report,I put all ireport jar files and log4j jar in the class path,
still I am getting this error why !!!

This following code I used in my example

String reportSource = "report1.jrxml";
JasperReport jR = JasperCompileManager.compileReport(reportSource);
JasperPrint JP = JasperFillManager.fillReport(jR, null, conn);
JasperViewer.viewReport(JP);


the exception is

log4j:WARN No appenders could be found for logger (net.sf.jasperreports.engine.xml.JRXmlDigesterFactory).
log4j:WARN Please initialize the log4j system properly.


 
Ranch Hand
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add appender some thing like this in log4j.xml

 
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