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index.zulzul<window id="pdfwindow" width="100%" height="100%" title="PDF-Viewer"
border="normal" minimizable="false" mode="modal" maximizable="false"
sclass="mymodal" closable="true" apply="org.zkoss.bind.BindComposer"
viewModel="@id('vm') @init('pkg$.ZKPDFViewerVM')">
<iframe height="100%" width="100%" id="reportframe"></iframe>
</window>ZKPDFViewerVM.javajavaimport java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import org.zkoss.bind.annotation.AfterCompose;
import org.zkoss.bind.annotation.ContextParam;
import org.zkoss.bind.annotation.ContextType;
import org.zkoss.bind.annotation.QueryParam;
import org.zkoss.util.media.AMedia;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.select.Selectors;
import org.zkoss.zk.ui.select.annotation.Wire;
import org.zkoss.zul.Iframe;
public class ZKPDFViewerVM {
@Wire("#reportframe")
private Iframe iframe;
@AfterCompose
public void initSetup(@ContextParam(ContextType.VIEW) Component view,
@QueryParam("filepath") String filePath) throws Exception {
Selectors.wireComponents(view, this, false);
if (filePath==null)
filePath = "";
if (filePath.isEmpty()==false) {
filePath = EncryptionUtil.decode(filePath);
File f = new File(filePath);
byte[] buffer = new byte[(int) f.length()];
FileInputStream fs = new FileInputStream(f);
fs.read(buffer);
fs.close();
ByteArrayInputStream is = new ByteArrayInputStream(buffer);
AMedia amedia = new AMedia(filePath, "pdf", "application/pdf", is);
iframe.setContent(amedia);
}
}
}EncryptionUtil .javajavaimport java.security.spec.AlgorithmParameterSpec;
import java.security.spec.KeySpec;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;
import org.apache.commons.codec.binary.Base64;
public class EncryptionUtil {
private static final byte[] SALT = { (byte) 0x21, (byte) 0x21, (byte) 0xF0,
(byte) 0x55, (byte) 0xC3, (byte) 0x9F, (byte) 0x5A, (byte) 0x75 };
private final static int ITERATION_COUNT = 31;
private EncryptionUtil() {
}
public static String encode(String input) {
if (input == null) {
throw new IllegalArgumentException();
}
try {
KeySpec keySpec = new PBEKeySpec(null, SALT, ITERATION_COUNT);
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(SALT,
ITERATION_COUNT);
SecretKey key = SecretKeyFactory.getInstance("PBEWithMD5AndDES")
.generateSecret(keySpec);
Cipher ecipher = Cipher.getInstance(key.getAlgorithm());
ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
byte[] enc = ecipher.doFinal(input.getBytes());
String res = new String(Base64.encodeBase64(enc));
// escapes for url
res = res.replace('+', '-').replace('/', '_').replace("%", "%25")
.replace("\n", "%0A");
return res;
} catch (Exception e) {
}
return "";
}
public static String decode(String token) {
if (token == null) {
return null;
}
try {
String input = token.replace("%0A", "\n").replace("%25", "%")
.replace('_', '/').replace('-', '+');
byte[] dec = Base64.decodeBase64(input.getBytes());
KeySpec keySpec = new PBEKeySpec(null, SALT, ITERATION_COUNT);
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(SALT,
ITERATION_COUNT);
SecretKey key = SecretKeyFactory.getInstance("PBEWithMD5AndDES")
.generateSecret(keySpec);
Cipher dcipher = Cipher.getInstance(key.getAlgorithm());
dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
byte[] decoded = dcipher.doFinal(dec);
String result = new String(decoded);
return result;
} catch (Exception e) {
// use logger in production code
e.printStackTrace();
}
return null;
}
}