Error in getting parameters' names from jrxml

[linuxapple]

Hi All,

 

I need to get parameters' name and values from jrxml file, I've searched the posted topic, but found nothing I can learn from.

 

Following are two ways that I tried to get it:

Code:

JasperDesign jasperDesign =new JasperDesign();
		// using JasperReport
		JasperReport jr=JasperManager.loadReport(fileName);
		if(jr!=null){
			JRParameter jrp[]=jr.getParameters();
		}

It coursed a JRException:

Code:

[code]net.sf.jasperreports.engine.JRException: Error loading object from file : D:developmenttest.jrxml at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:92) at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:64) at net.sf.jasperreports.engine.JasperManager.loadReport(JasperManager.java:989) at com.favorit.report.JRxmlTemplate.hasParameter(JRxmlTemplate.java:35) at com.favorit.report.JRxmlTemplate.main(JRxmlTemplate.java:54) Caused by: java.io.StreamCorruptedException: invalid stream header at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:737) at java.io.ObjectInputStream.<init>(ObjectInputStream.java:253) at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:87) ... 4 more

The other is:

Code:

[code]//using JasperDesign jasperDesign = JasperManager.loadXmlDesign(fileName); List list=jasperDesign.getParametersList(); if(list!=null){ for(int i=0;i<list.size();i++){ System.out.println("name of parameter:"+((JasperReport)list).getName()); b=true; } }

while it coursed:

Code:

[code]net.sf.jasperreports.engine.JRException: org.xml.sax.SAXParseException: Valid documents must have a <!DOCTYPE declaration. at net.sf.jasperreports.engine.xml.JRXmlLoader.loadXML(JRXmlLoader.java:242) at net.sf.jasperreports.engine.xml.JRXmlLoader.loadXML(JRXmlLoader.java:225) at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:213) at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:167) at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:151) at net.sf.jasperreports.engine.JasperManager.loadXmlDesign(JasperManager.java:971) at com.favorit.report.JRxmlTemplate.hasParameter(JRxmlTemplate.java:40) at com.favorit.report.JRxmlTemplate.main(JRxmlTemplate.java:54) Caused by: org.xml.sax.SAXParseException: Valid documents must have a <!DOCTYPE declaration. at org.apache.crimson.parser.Parser2.warning(Parser2.java:3342) at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:658) at org.apache.crimson.parser.Parser2.parse(Parser2.java:337) at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:448) at org.apache.commons.digester.Digester.parse(Digester.java:1647) at net.sf.jasperreports.engine.xml.JRXmlLoader.loadXML(JRXmlLoader.java:238) ... 7 more Exception in thread "main"

 

Any suggestion will be greatly appreciated!

 

Shuaibing

Post edited by: linuxapple, at: 2007/05/02 05:45

[linuxapple]

It was fixed by using JRXmlLoader

Code:

jasperDesign=JRXmlLoader.load(fileName);
		 
		List list=jasperDesign.getParametersList();
		
		if(list!=null){
			for(int i=0;i<list.size();i++){
				System.out.println("size="+list.size());
				System.out.println("name of parameter:"+((JRParameter)list.get(i)).getName());
				b=true;
			}
		}