Show output as a xml file using Velocity
This
Example shows you how
to show output as a xml file in velocity. The method
used in this example are
described below:-
1:- Initialize velocity run
time
engine through method init().
2:- Create object of
VelocityContext Class.
3:- Create Template
class object, Template
class object is used for
controlling template methods and properties.
template.merge(context, writer): Merge method of the Template class
is used here for
merging the VelocityContext class object to produce
the output.
#foreach( $stu in $stuList ): This works same as the for loop
of java but with some enhanced functionality.
Here in the code given below we will take some values in map object and then add
this map object in list. With the help this list object we will create output
for all the given values as a xml file.
XMLOutput.java
package velocity.XML;
import java.io.*;
import java.util.*;
import org.apache.velocity.*;
import org.apache.velocity.app.*;
public class XMLOutput {
public static void main(String[] args)
throws Exception {
VelocityEngine ve = new VelocityEngine();
ve.init();
ArrayList list = new ArrayList();
Map map = new HashMap();
map.put("rno", "1");
map.put("name", "komal");
map.put("libno", 1001);
list.add(map);
map = new HashMap();
map.put("rno", "2");
map.put("name", "santosh");
map.put("libno", 1002);
list.add(map);
map = new HashMap();
map.put("rno", "3");
map.put("name", "ajay");
map.put("libno", 1003);
list.add(map);
VelocityContext context = new VelocityContext();
context.put("stuList", list);
Template t = ve.getTemplate("./src/velocity/XMLOutput/xml.vm");
StringWriter writer = new StringWriter();
t.merge(context, writer);
System.out.println(writer.toString());
}
}
|
XML.vm
<?xml version="1.0"?>
<student>
#foreach( $stu in $stuList )
<studentDetail>
<rno>$stu.rno</rno>
<name>$stu.name</name>
</studentDetail>
#end
#foreach( $stu in $stuList )
<libCardDetail>
<rno>$stu.rno</rno>
<libno>$stu.libno</libno>
</libCardDetail>
#end
</studentlist>
|
Output :
<?xml version="1.0"?>
<student>
<studentDetail>
<rno>1</rno>
<name>komal</name>
</studentDetail>
<studentDetail>
<rno>2</rno>
<name>santosh</name>
</studentDetail>
<studentDetail>
<rno>3</rno>
<name>ajay</name>
</studentDetail>
<libCardDetail>
<rno>1</rno>
<libno>1001</libno>
</libCardDetail>
<libCardDetail>
<rno>2</rno>
<libno>1002</libno>
</libCardDetail>
<libCardDetail>
<rno>3</rno>
<libno>1003</libno>
</libCardDetail>
</studentlist> |
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