User Guide

Table Of Contents
ZipBrowser example 265
Note: The Java source file that implements cfx_ZipBrowser, ZipBrowser.java, is included in the
cf_root/cfx/java/distrib/examples (server configuration) or cf_webapp_root/WEB-INF/cfusion/cfx/
java/distrib/examples (J2EE configuration) directory. Compile ZipBrowser.java to implement the tag.
The tag’s archive attribute specifies the fully qualified path of the zip archive to browse. The tags
name attribute must specify the query to return to the calling page. The returned query contains
three columns: Name, Size, and Compressed.
For example, to query an archive at the path C:\logfiles.zip for its contents and output the results,
you use the following CFML code:
<cfx_ZipBrowser
archive="C:\logfiles.zip"
name="LogFiles" >
<cfoutput query="LogFiles">
#Name#, #Size#, #Compressed# <BR>
</cfoutput>
The Java implementation of ZipBrowser is as follows:
import com.allaire.cfx.* ;
import java.util.Hashtable ;
import java.io.FileInputStream ;
import java.util.zip.* ;
public class ZipBrowser implements CustomTag {
public void processRequest( Request request, Response response )
throws Exception {
// validate that required attributes were passed
if ( !request.attributeExists( "ARCHIVE" ) ||
!request.attributeExists( "NAME" ) ) {
throw new Exception(
"Missing attribute (ARCHIVE and NAME are both " +
"required attributes for this tag)" ) ;
}
// get attribute values
String strArchive = request.getAttribute( "ARCHIVE" ) ;
String strName = request.getAttribute( "NAME" ) ;
// create a query to use for returning the list of files
String[] columns = { "Name", "Size", "Compressed" } ;
int iName = 1, iSize = 2, iCompressed = 3 ;
Query files = response.addQuery( strName, columns ) ;
// read the zip file and build a query from its contents
ZipInputStream zin =
new ZipInputStream( new FileInputStream(strArchive) ) ;
ZipEntry entry ;
while ( ( entry = zin.getNextEntry()) != null ) {
// add a row to the results
int iRow = files.addRow() ;
// populate the row with data
files.setData( iRow, iName,
entry.getName() ) ;