2006年4月20日
#
自己實在是個懶人，blog難得更新一次，更新也是一些雞毛蒜皮的小東西。不過還是希望能對其他朋友或自己將來遇到類似問題能有個解答。最新在做一個swing項目，客戶要求能把JInternalFrame的Title bar去掉，同時還能加回來。由于網上搜一下沒有找到解決辦法，只能自己研究一下并改了下JInternalFrame,先記錄如下：
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Rectangle;
import java.awt.event.ComponentEvent;
import java.awt.peer.ComponentPeer;
import java.beans.PropertyVetoException;
import javax.swing.ActionMap;
import javax.swing.BorderFactory;
import javax.swing.JComponent;
import javax.swing.JDesktopPane;
import javax.swing.JInternalFrame;
import javax.swing.UIManager;
import javax.swing.plaf.InternalFrameUI;
import javax.swing.plaf.basic.BasicInternalFrameUI;
public class MCOCInternalFrame extends JInternalFrame {
//private String lookAndFeel = null;
BasicInternalFrameUI orgUi = null;
BasicInternalFrameUI newUi = null;
JComponent northPanel = null;
private boolean isHidden = false;
public MCOCInternalFrame() {
super();
northPanel = ((javax.swing.plaf.basic.BasicInternalFrameUI) this.getUI()).getNorthPane();
orgUi = ((javax.swing.plaf.basic.BasicInternalFrameUI) this.getUI());
newUi = new BasicInternalFrameUI(this);
}
public void showNorthPanel() {
this.setUI(orgUi);
this.putClientProperty("JInternalFrame.isPalette", Boolean.FALSE);
isHidden = false;
}
public void hideNorthPanel() {
this.setUI(newUi);
((javax.swing.plaf.basic.BasicInternalFrameUI) this.getUI()).setNorthPane(null);
this.putClientProperty("JInternalFrame.isPalette", Boolean.TRUE);
isHidden = true;
}
public void updateUI() {
super.updateUI();
if (isHidden) {
hideNorthPanel();
}
}
}
創建該InternalFrame對象后，通過showNorthPanel(), hideNorthPanel()來顯示或隱藏title bar,另外updateUI()重寫是因為界面被動態改變lookandfeel時，保證title bar上多的一小個bar出現。
MailSender.java
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import org.apache.log4j.Logger;
public class MailSender {
public static Logger logger = Logger.getLogger(MailSender.class);
public static boolean send(Mail mail) throws Exception {
try {
Properties props = new Properties();
props.put("mail.smtp.host", "localhost");
Session session = Session.getDefaultInstance(props, null);
MimeMessage mimemessage = new MimeMessage(session);
mimemessage.setFrom(new InternetAddress(mail.getFrom()));
mimemessage.setSentDate(mail.getDate());
// set SUBJECT
mimemessage.setSubject(mail.getSubject());
// set TO address
String mailto = mail.getTo();
String ccmailid = mail.getCcusers();
String strResult = "";
try {
mimemessage.setRecipients(javax.mail.Message.RecipientType.TO,
mailto);
} catch (Exception exception1) {
throw exception1;
}
// set message BODY
MimeBodyPart mimebodypart = new MimeBodyPart();
mimebodypart.setText(mail.getContent());
// attach message BODY
MimeMultipart mimemultipart = new MimeMultipart();
mimemultipart.addBodyPart(mimebodypart);
// attach FILE
ArrayList attachedFileList = mail.getAttachedFileList();
if (attachedFileList != null) {
DataSource ds = null;;
for (Iterator e = attachedFileList.iterator(); e.hasNext();) {
ds = (DataSource) e.next();
mimebodypart = new MimeBodyPart();
try {
mimebodypart.setDataHandler(new DataHandler(
ds));
} catch (Exception exception3) {
throw exception3;
}
mimebodypart.setFileName(ds.getName()); // set FILENAME
mimemultipart.addBodyPart(mimebodypart);
}
}// end if
mimemessage.setContent(mimemultipart);
// set CC MAIL and SEND the mail
if (!mailto.equals("")) {
// set CC MAIL
if (ccmailid != null && (!ccmailid.equals("")))
mimemessage.setRecipients(
javax.mail.Message.RecipientType.CC, ccmailid);
try {
// send MAIL
Transport.send(mimemessage);
logger.info(mailto + " Sent Successfully..........");
} catch (Exception exception4) {
throw exception4;
}
} else {
logger.info(mailto + " Mail operation Failed..........");
}
} catch (Exception e) {
throw e;
}
return true;
}
}
Mail.java
import java.util.ArrayList;
import java.util.Date;
import java.util.StringTokenizer;
public class Mail {
private String from = null;
private String to = null;
private String subject = null;
private String content = null;
private String ccusers = null;
private ArrayList attachedFileList = null;
private Date date = null;
public Mail() {
// TODO Auto-generated constructor stub
}
public ArrayList getAttachedFileList() {
return attachedFileList;
}
public void setAttachedFileList(ArrayList attachedFileList) {
this.attachedFileList = attachedFileList;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public String getFrom() {
return from;
}
public void setFrom(String from) {
this.from = from;
}
public String getSubject() {
return subject;
}
public void setSubject(String subject) {
this.subject = subject;
}
public String getTo() {
return to;
}
public void setTo(String to) {
this.to = to;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public String getCcusers() {
return ccusers;
}
public void setCcusers(String ccusers) {
this.ccusers = ccusers;
}
}
很長時間沒有更新自己的blog了，最近忙一個基于alfreco的項目開發，趕快把用到的一些東西記錄一下，誰讓自己記性不好呢。這里是password的加解密:
PasswordUtil.java
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.Security;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class PasswordUtil {
public final static int ITERATION_NUMBER = 1000;
public static final String algorithm = "Blowfish";// we can use DES,DESede,Blowfish
/**
*
* @param password
* @return
* @throws Exception
*/
public static PasswordBean encry(String password) throws Exception {
Security.addProvider(new com.sun.crypto.provider.SunJCE());
try {
KeyGenerator keygen = KeyGenerator.getInstance(algorithm);
SecretKey deskey = keygen.generateKey();
Cipher c1 = Cipher.getInstance(algorithm);
c1.init(Cipher.ENCRYPT_MODE, deskey);
byte[] cipherByte = c1.doFinal(password.getBytes());
String saltKey = PasswordUtil.byteToBase64(deskey.getEncoded());
String pass = PasswordUtil.byteToBase64(cipherByte);
return new PasswordBean(saltKey, pass);
//System.out.println("After encry:" + key + "====" + password);
} catch (Exception e) {
throw e;
}
}
/**
*
* @param bean
* @return
* @throws Exception
*/
public static String decry(PasswordBean bean) throws Exception {
return decry(bean.getSaltKey(), bean.getPassword());
}
/**
*
* @param saltKey
* @param pass
* @return
* @throws Exception
*/
public static String decry(String saltKey, String pass) throws Exception {
//Security.addProvider(new com.sun.crypto.provider.SunJCE());
try {
Security.addProvider(new com.sun.crypto.provider.SunJCE());
byte[] keyser = PasswordUtil.base64ToByte(saltKey);
javax.crypto.spec.SecretKeySpec destmp = new javax.crypto.spec.SecretKeySpec(keyser, algorithm);
SecretKey mydeskey = destmp;
Cipher c1 = Cipher.getInstance(algorithm);
c1.init(Cipher.DECRYPT_MODE, mydeskey);
byte[] clearByte = c1.doFinal(PasswordUtil.base64ToByte(pass));
return new String(clearByte);
} catch (Exception e) {
//e.printStackTrace();
System.out.println("saltKey:" + saltKey + " pass:" + pass) ;
throw e;
}
}
/**
* From a password, a number of iterations and a salt, returns the
* corresponding digest
*
* @param iterationNb
* int The number of iterations of the algorithm
* @param password
* String The password to encrypt
* @param salt
* byte[] The salt
* @return byte[] The digested password
* @throws NoSuchAlgorithmException
* If the algorithm doesn't exist
*/
public static byte[] getHash(int iterationNb, String password, byte[] salt)
throws NoSuchAlgorithmException {
MessageDigest digest = MessageDigest.getInstance("SHA-1");
digest.reset();
digest.update(salt);
byte[] input = digest.digest(password.getBytes());
for (int i = 0; i < iterationNb; i++) {
digest.reset();
input = digest.digest(input);
}
return input;
}
/**
* From a base 64 representation, returns the corresponding byte[]
*
* @param data
* String The base64 representation
* @return byte[]
* @throws IOException
*/
public static byte[] base64ToByte(String data) throws IOException {
BASE64Decoder decoder = new BASE64Decoder();
return decoder.decodeBuffer(data);
}
/**
* From a byte[] returns a base 64 representation
*
* @param data
* byte[]
* @return String
* @throws IOException
*/
public static String byteToBase64(byte[] data) {
BASE64Encoder endecoder = new BASE64Encoder();
return endecoder.encode(data);
}
}
PasswordBean.java
public class PasswordBean {
private String saltKey = null;
private String password = null;
public PasswordBean(String key, String pass) {
this.saltKey = key;
this.password = pass;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getSaltKey() {
return saltKey;
}
public void setSaltKey(String saltKey) {
this.saltKey = saltKey;
}
}
使用的時候可以是：
String password = PasswordUtil.decry(salt, encodePassword);
PasswordBean passwordBean = PasswordUtil.encry(password);
常用到System.getProperty(), 而參數老不記得，這里貼一下，省得下次麻煩.
java.version | Java Runtime Environment version |
| java.vendor | Java Runtime Environment vendor |
| java.vendor.url | Java vendor URL |
| java.home | Java installation directory |
| java.vm.specification.version | Java Virtual Machine specification version |
| java.vm.specification.vendor | Java Virtual Machine specification vendor |
| java.vm.specification.name | Java Virtual Machine specification name |
| java.vm.version | Java Virtual Machine implementation version |
| java.vm.vendor | Java Virtual Machine implementation vendor |
| java.vm.name | Java Virtual Machine implementation name |
| java.specification.version | Java Runtime Environment specification version |
| java.specification.vendor | Java Runtime Environment specification vendor |
| java.specification.name | Java Runtime Environment specification name |
| java.class.version | Java class format version number |
| java.class.path | Java class path |
| java.library.path | List of paths to search when loading libraries |
| java.io.tmpdir | Default temp file path |
| java.compiler | Name of JIT compiler to use |
| java.ext.dirs | Path of extension directory or directories |
| os.name | Operating system name |
| os.arch | Operating system architecture |
| os.version | Operating system version |
| file.separator | File separator ("/" on UNIX) |
| path.separator | Path separator (":" on UNIX) |
| line.separator | Line separator ("\n" on UNIX) |
| user.name | User's account name |
| user.home | User's home directory |
| user.dir | User's current working directory |
說實話,一直不想在這里寫一些不是關于技術方面的東西.但是今天,我實在想寫一點什么:今天舒馬赫宣布退役了!
令我自己也想不通,為什么是今天.而不是米卡.哈基寧退出F1的那一天,也不是Montoya退出的那一天.因為我一直是他們兩個的車迷!自98年開始看F1以來,一直是一個不向著舒馬赫的車迷(倒和維綸紐夫差不多,不過我可沒那本事和舒米對著干!呵呵).
剛開始,一直喜歡哈基寧,因為只有他才能從舒馬赫手中奪取年度冠軍,而且不止一次!但是隨著Ferrari的強盛一時,麥克拉倫沒落了,我心中的英雄也暗然退去.然后,激情四射的哥倫比亞人Montoya來了,他也一度給舒米制造了不少麻煩,而且看他開車我也會充滿激情.而且最喜歡他跑今天的蒙扎賽道.在Williams時就在蒙扎取的過冠軍,去年也是,可是今年呢?昔日的蒙扎英雄何在?
哈基寧的退出令人傷心,長期的壓抑作為他的車迷也可以感受到他的心情.Montoya的退出實在是太突然了,突然的我都不會說話了.
今天舒米也退了,作為車迷還是很傷心,畢竟我的偶像們都曾是他的手下敗將!他的技術卻實高人一等,雖然不少時候他也做法卑鄙,畢竟是人嘛!也可以理解.
所以今天寫點胡話,紀念一下舒米,同時也為追憶(當然不恰當的說法拉)一下我的兩位偶像!
數據庫方面一直喜歡用postgresql,最近重裝了debian.安裝的時候發現可以用apt-get
方法安裝postgresql了,就安裝了一個.結果裝完發現居然沒有啟動,仔細一看初始化也沒做,debian這一點做的有點不應該阿!!于是自己重新
做了一下.現在記下來,不要下次忘了.HOHO!記性不好.
用postgres登錄,切換到目錄/usr/lib/postgresql/8.1/bin(是系統安裝的目錄,居然沒有設置成Path汗).運行./
initdb -D /usr/local/pgsql/data(當然,后面的目錄也沒有,自己建先),成功運行以后就可以啟動了. ./postmaster -D /usr/local/pgsql/data
不知道debian安裝默認允許非本機用戶登錄伐,我先看看...
在網上可以看到很多判斷判斷url是否合法的regular expressions.但是經常是要么缺少protocol,要么缺少port的判斷，這里自己寫一個：
?public static boolean isValidURL(String value) {
??Pattern pattern = Pattern.compile("(.*://)?([\\w-]+\\.)+[\\w-]+(:\\d+)?(/[^/.]*)*(/[^/]+\\.[^/\\?]+)(\\?&*([^&=]+=[^&=]*)&*(&[^&=]+=[^&=]*)*&*)");
??Matcher m = pattern.matcher(value);
??if (m.matches())
???return true;
??
??return false;
?}
判斷url中data是否符合規則：
&*([^&=]+=[^&=]*)&*(&[^&=]+=[^&=]*)*&*