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sitinspring — Sat, 11 Oct 2008 11:52:00 GMT

摘要: SQL注入��d��的基本原理，是从客户端合法接口提交特�D�的非法代码�Q�让其注入到服务器端执行业务的SQL中去�Q�进而改变SQL语句的原有逻辑和媄(ji��ng)响服务器端正�怸�务的处理。SQL注入��d��是Web应用中一个重要的安全问题�Q�虽然Java具备较高的安全性，但如果开发�h员�(sh��)��注意�Q�也有可能留下安全隐�(zh��n)�，本文��对此展开一些粗��的探讨�Q�欢�q�批评指正�?nbsp; 阅读全文

sitinspring 2008-10-11 19:52 发表评论

JavaMail邮�g发送实用类

sitinspring — Fri, 08 Aug 2008 04:54:00 GMT

在Web开发中�Q�文本邮件发送的��d��比较常见�Q�我们可以利用它�q�行一些客户通知和异帔R��知�Q�文本邮件发送一般用到JavaMail API�Q�下面是一个我有时用到的邮件发送实用工��L(f��ng)��Q�把其中一些参��C��改一下就能�ؓ(f��)你所用�?/p>

注意�Q�在执行代码前，��h��mail.jar�?strong>activation.jar载入工程�?nbsp;

代码如下�Q?/p>

sitinspring class="highlighter"> class="keyword">package com.heyang; class="keyword">import java.util.Date; class="alt">import java.util.Properties; class="alt">import javax.mail.Address; class="keyword">import javax.mail.Message; class="alt">import javax.mail.Session; class="keyword">import javax.mail.Transport; class="alt">import javax.mail.internet.InternetAddress; class="keyword">import javax.mail.internet.MimeMessage; class="comment">/** class="alt"> * 常规JavaMail 邮�g发送实用类 class="comment"> * @author: 何杨(heyang78@gmail.com) class="alt"> * @date: 2008-8-6-下午02:43:22 class="comment"> */ class="alt">public final class MailUtil { // 邮�g发送者地址 class="alt"> private static final String SenderEmailAddr = "XXXXXXX@163.com"; class="alt"> // 邮�g发送者邮��q��? private static final String SMTPUserName = "XXXX"; class="alt"> // 邮�g发送者邮��密�? class="alt"> private static final String SMTPPassword = "XXXXXXX"; class="alt"> // 邮�g发送者邮��SMTP服务�? private static final String SMTPServerName = "smtp.163.com"; // 传输�c�d�� class="alt"> private static final String TransportType = "smtp"; class="alt"> // 属�? private static Properties props; /** class="alt"> * �U�有构造函敎ͼ�防止外界新徏本实用类的实例，因�ؓ(f��)直接使用MailUtil.sendMail发送邮件即�?/span> class="comment"> * class="alt"> */ private MailUtil() { } /** class="alt"> * �?r��n)态构造器 class="comment"> */ class="alt"> static { MailUtil.props = new Properties(); // 存储发送邮件服务器的信�? class="alt"> MailUtil.props.put("mail.smtp.host", MailUtil.SMTPServerName); // 同时通过验证 class="alt"> MailUtil.props.put("mail.smtp.auth", "true"); } /** class="alt"> * 发送邮�?/span> class="comment"> * @param emailAddr:收信人邮件地址 class="alt"> * @param mailTitle:邮�g标题 class="comment"> * @param mailConcept:邮�g内容 class="alt"> */ public static void sendMail(String emailAddr, String mailTitle, class="alt"> String mailConcept) { // �Ҏ(gu��)��属性新��Z��个邮件会(x��)话，null参数是一�U�Authenticator(验证�E�序) 对象 class="alt"> Session s = Session.getInstance(MailUtil.props, null); class="alt"> // 讄��调试标志,要查看经�q�邮件服务器邮�g命��o(h��)�Q�可以用该方�? s.setDebug(false); class="alt"> // 由邮件会(x��)话新��Z��个消息对�? class="alt"> Message message = new MimeMessage(s); try { class="alt"> // 讄��发�g�? Address from = new InternetAddress(MailUtil.SenderEmailAddr); class="alt"> message.setFrom(from); class="alt"> // 讄��收�g�? Address to = new InternetAddress(emailAddr); class="alt"> message.setRecipient(Message.RecipientType.TO, to); class="alt"> // 讄��主题 message.setSubject(mailTitle); class="alt"> // 讄��信�g内容 message.setText(mailConcept); class="alt"> // 讄��发信旉�� message.setSentDate(new Date()); class="alt"> // 存储邮�g信息 message.saveChanges(); Transport transport = s.getTransport(MailUtil.TransportType); class="alt"> // 要填入你的用户名和密码； transport.connect(MailUtil.SMTPServerName, MailUtil.SMTPUserName, class="alt"> MailUtil.SMTPPassword); class="alt"> // 发送邮�?其中�W�二个参数是所有已讑֥�的收件�h地址 transport.sendMessage(message, message.getAllRecipients()); class="alt"> transport.close(); class="alt"> System.out.println("发送邮�?邮�g地址:" + emailAddr + " 标题:" + mailTitle + " 内容:" + mailConcept + "成功!"); class="alt"> } catch (Exception e) { System.out.println(e.getMessage()); class="alt"> System.out.println("发送邮�?邮�g地址:" + emailAddr + " 标题:" + mailTitle + " 内容:" + mailConcept + "��p�|! 原因�? + e.getMessage()); class="alt"> } } /** class="alt"> * ��试邮�g发送情�?/span> class="comment"> * @param args class="alt"> */ public static void main(String[] args){ class="alt"> MailUtil.sendMail("XXXXXX@gmail.com", "title", "concept"); } class="alt">} align=right>sitinspring 2008-08-08 12:54 发表评论

— Thu, 24 Jul 2008 13:37:00 GMT

扑և�以下字符�?/span>=�W�号后面对应的属性�?br />
"职务=GM 薪水=50000 , 姓名=职业�l�理�?nbsp;; 性别=�?nbsp; �q�龄=45 ";

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
* 用正则表辑ּ�扑և�每个属性对应的�?br /> * @author HEYANG
* @since 2008-7-23 下午08:12:45
*/
public class RegexFindProperty {

  public static void main(String[] args) {
    String input = "职务=GM 薪水=50000 , 姓名=职业�l�理�?nbsp;; 性别=�?nbsp; �q�龄=45 ";

    // =号和�I�白�W�之间是非空格字�W�，�q�种写法比去分开�l�合字母�Q�数字和汉字的方式要快捷
    Pattern pattern = Pattern.compile("=(\\S+)\\s*");

    // 用Pattern�cȝ��matcher()�Ҏ(gu��)��生成一个Matcher对象
    Matcher m = pattern.matcher(input);

    // 使用find()�Ҏ(gu��)��查找�W�一个匹配的对象
    boolean result = m.find();

    // 使用循环扑և�模式匚w��的内�Ҏ(gu��)��?/span>
    while (result) {
      // 取得匚w��的结�?/span>
          String replaceStr = m.group(1);
          System.out.println("匚w��的属性等�?" + replaceStr);

      result = m.find();
    }
  }
}

sitinspring 2008-07-24 21:37 发表评论

sitinspring — Sat, 19 Jul 2008 14:14:00 GMT

摘要: package com.sitinspring.datetime; import java.util.ArrayList; import java.util.List; public class MonthlyCalendar{ private static f... 阅读全文

sitinspring 2008-07-19 22:14 发表评论

sitinspring — Fri, 18 Jul 2008 02:52:00 GMT

摘要: 输出�C�Z��:

当前日期旉��?2008.07.18 10:48:57
当前日期�?2008.07.18
当前日期�?2008.7.18
当前旉��?10:48:57
2008.07.05�?008.07.18之间盔R��:13�?
当前�q�月�?2008.07
本月�W�一天�ؓ(f��)�?
本月�?1�?
阅读全文

sitinspring 2008-07-18 10:52 发表评论

java.util.Comparator使用�C�Z��

sitinspring — Tue, 15 Jul 2008 03:52:00 GMT

Comparator的具体实现类

public class AgeComparator implements Comparator {
  public int compare(Object op1, Object op2) {
    Employee eOp1 = (Employee) op1;
    Employee eOp2 = (Employee) op2;

    // 按年龄排�?/span>
    return eOp1.getAge()-(eOp2.getAge());
  }
}

public class NameComparator implements Comparator {
  public int compare(Object op1, Object op2) {
    Employee eOp1 = (Employee) op1;
    Employee eOp2 = (Employee) op2;

    // 按姓名排�?/span>
    return eOp1.getName().compareTo(eOp2.getName());
  }
}

public class SalaryComparator implements Comparator {
  public int compare(Object op1, Object op2) {
    Employee eOp1 = (Employee) op1;
    Employee eOp2 = (Employee) op2;

    // 按薪水排�?/span>
    return eOp1.getSalary()-(eOp2.getSalary());
  }
}

Employee�c�：(x��)

public class Employee{
  protected String name;
  protected int age;
  protected int salary;

  public Employee(String name,int age,int salary){
    this.name=name;
    this.age=age;
    this.salary=salary;
  }

  public int getAge() {
    return age;
  }
  public void setAge(int age) {
    this.age = age;
  }
  public String getName() {
    return name;
  }
  public void setName(String name) {
    this.name = name;
  }
  public int getSalary() {
    return salary;
  }
  public void setSalary(int salary) {
    this.salary = salary;
  }
}

��试�Q?br />

public class Main{
  public static void main(String[] args){
    List<Employee> employees=new ArrayList<Employee>();

    employees.add(new Employee("Andy",21,2000));
    employees.add(new Employee("Felix",21,3000));
    employees.add(new Employee("Bill",35,20000));
    employees.add(new Employee("Helen",21,10000));
    employees.add(new Employee("Cindy",28,8000));
    employees.add(new Employee("Douglas",25,5000));

    // 按名�U�排�?/span>
      Collections.sort(employees,new NameComparator());
      display(employees);

      // 按年龄排�?/span>
      Collections.sort(employees,new AgeComparator());
      display(employees);

      // 按薪水排�?/span>
      Collections.sort(employees,new SalaryComparator());
      display(employees);
  }

  public static void display(List<Employee> employees){
    for(Employee e:employees){
      System.out.println("雇员�?"+e.getName()+" �q�龄="+e.age+" 薪水="+e.getSalary());
    }

    System.out.println();
  }
}

输出�Q?br />

雇员�?/span>=Andy �q�龄=21 薪水=2000
雇员�?/span>=Bill �q�龄=35 薪水=20000
雇员�?/span>=Cindy �q�龄=28 薪水=8000
雇员�?/span>=Douglas �q�龄=25 薪水=5000
雇员�?/span>=Felix �q�龄=21 薪水=3000
雇员�?/span>=Helen �q�龄=21 薪水=10000

雇员�?/span>=Andy �q�龄=21 薪水=2000
雇员�?/span>=Felix �q�龄=21 薪水=3000
雇员�?/span>=Helen �q�龄=21 薪水=10000
雇员�?/span>=Douglas �q�龄=25 薪水=5000
雇员�?/span>=Cindy �q�龄=28 薪水=8000
雇员�?/span>=Bill �q�龄=35 薪水=20000

雇员�?/span>=Andy �q�龄=21 薪水=2000
雇员�?/span>=Felix �q�龄=21 薪水=3000
雇员�?/span>=Douglas �q�龄=25 薪水=5000
雇员�?/span>=Cindy �q�龄=28 薪水=8000
雇员�?/span>=Helen �q�龄=21 薪水=10000
雇员�?/span>=Bill �q�龄=35 薪水=20000

sitinspring 2008-07-15 11:52 发表评论