<code><cfscript>

   function unzipFile(zipFilePath, outputPath) {
     
       var zipFile = ""; // ZipFile
       var entries = ""; // Enumeration of ZipEntry
       var entry = ""; // ZipEntry
       var fil = ""; //File
       var filOutStream = "";
       var bufOutStream = "";
       var nm = "";
       var pth = "";
       var lenPth = "";
 
       zipFile = createObject("java", "java.util.zip.ZipFile");
       zipFile.init(zipFilePath);
       
       entries = zipFile.entries();
 
       while(entries.hasMoreElements()) {
           entry = entries.nextElement();
  
           if(NOT entry.isDirectory()) {
               nm = entry.getName(); 
               
               lenPth = len(nm) - len(getFileFromPath(nm));
   
               if (lenPth) {
                   pth = outputPath & left(nm, lenPth);
                } else {
                   pth = outputPath;
                }
   
               if (NOT directoryExists(pth)) {
                   fil = createObject("java", "java.io.File");
                   fil.init(pth);
                   fil.mkdirs();
                }
   
               filOutStream = createObject(
                  "java", 
                  "java.io.FileOutputStream");
   
               filOutStream.init(outputPath & nm);
               
               bufOutStream = createObject(
                  "java", 
                  "java.io.BufferedOutputStream");
   
               bufOutStream.init(filOutStream);
   
               copyInputStream(
                  zipFile.getInputStream(entry),
                  bufOutStream);
            }
        }
 
       zipFile.close();
    }

   function copyInputStream(inStream, outStream) {
     
       var buffer = repeatString(" ",1024).getBytes(); 
       var l = inStream.read(buffer);
 
       while(l GTE 0) {
           outStream.write(buffer, 0, l);
           l = inStream.read(buffer);
        }
       inStream.close();
       outStream.close();
    }

</cfscript>

<cfset unzipFile(expandPath("test.zip"), expandPath("target\"))></code>