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JavaBean规范

��L�� — Wed, 21 May 2008 08:14:00 GMT

�Q?�Q�JavaBean �c�d��L��一个公��q��Q��ƈ��其讉K��属性设�|��ؓ public
�Q?�Q�JavaBean �c�d��L��一个空的构造函敎ͼ��c�M��必须有一个不带参数的公用构造器�Q�此构造器也应该通过调用各个�Ҏ��的讄��Ҏ��来设�|�特性的�~�省倹{�?br />�Q?�Q�一个javaBean�c�M��应有公共实例变量�Q�类变量都�ؓprivate
�Q?�Q�持有值应该通过一�l�存取方法（getXxx �?setXxx�Q�来讉K��Q�对于每个特性，应该有一个带匚w��公用 getter �?setter �Ҏ��的专用实例变量�?br />

�C�Z��代码�Q?br />

package show;

import java.sql.*;

public class DBconn
{
    private String sDBDriver = "org.gjt.mm.mysql.Driver";
    private String sConnStr = "jdbc:mysql://10.1.1.79:3306/web?user=root&password=2676141";
    private Connection conn = null;
    private ResultSet rs = null;

    public DBconn()
    {
        try
        {
            Class.forName(sDBDriver);
        }
        catch(ClassNotFoundException e)
        {
            System.out.println("DBconn():" + e.getMessage());
        }
    }

    public String getsConnStr()
    {
        return sConnStr;
    }

    public void setsConnStr(String sConnStr)
    {
        this.sConnStr = sConnStr;
    }

    public void executeUpdate(String sql) throws Exception
    {
        sql = new String(sql.getBytes("GBK"),"ISO8859_1");
        try
        {
            conn=DriverManager.getConnection(sConnStr);
            Statement stmt = conn.createStatement();
            stmt.executeUpdate(sql);
            conn.close();
            stmt.close();
        }
        catch(SQLException ex)
        {
            System.out.println("sql.executeUpdate:" + ex.getMessage());
        }
    }

    public ResultSet executeQuery(String sql) throws Exception
    {
        rs = null;
        try
        {
            sql = new String(sql.getBytes("GBK"),"ISO8859_1");
            conn = DriverManager.getConnection(sConnStr);
            Statement stmt = conn.createStatement();
            rs = stmt.executeQuery(sql);
            conn.close();
            stmt.close();
        }
        catch(SQLException ex)
        {
            System.out.println("sql.executeQuery:" + ex.getMessage());
        }
        return rs;
    }
}

��L�� 2008-05-21 16:14 发表评论

JDK�pȝ��变量讄��

��L�� — Wed, 21 May 2008 06:59:00 GMT

新徏�pȝ��变量 JavaHome = d:\java\jdk
新徏�pȝ��变量 ClassPath = .;%JavaHome%\lib
修改 Path 变量�Q�在 Path 变量前面加入 %JavaHome%\bin;

��L�� 2008-05-21 14:59 发表评论

JSP中文��q��解决办法

��L�� — Mon, 19 May 2008 13:39:00 GMT

<%@ page pageEncoding="gb2312" contentType="text/html; charset=gb2312"%>

<%
//只针�?post 中文数据起作�?br />//request.setCharacterEncoding("gb2312");

String strUserName, strUserPass;

strUserName = request.getParameter("userName");
strUserPass = request.getParameter("userPass");

//1. 无论�?post �?get 的中文都起作�?br />strUserName = new String(strUserName.getBytes("8859_1"),"gb2312");

//2. 无论�?post �?get 的中文都起作�?br />//strUserName = new String(strUserName.getBytes("iso-8859-1"),"gb2312");

//3. 无论�?post �?get 的中文都起作�?br />//byte b[] = strUserName.getBytes("iso-8859-1");
//strUserName = new String(b);

out.print("您输入的姓名是：" + strUserName);
out.print("
");
out.print("您输入的密码是：" + strUserPass);
%>

��L�� 2008-05-19 21:39 发表评论

Tomcat虚拟站点及虚拟目录的配置

��L�� — Mon, 19 May 2008 13:04:00 GMT

版本�?Tomcat 6.0.16 打开 %Tomcat%\conf\server.xml 配置文�g

  #�q�里的代码省�?br />



      #�q�里的代码省�?br />
                     autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false">


      #虚拟站点配置


        #虚拟目录配置

��L�� 2008-05-19 21:04 发表评论

��L�� — Sat, 17 May 2008 13:07:00 GMT

操作�pȝ��Q�Windows Server 2003 SP2
JDK 版本�?6.0 update 6 安装�?D:\Java 目录�?br />Tomcat 版本�?6.0.16 安装 D:\Tomcat 目录�?br />故障描述�Q�成功安装后 Tomcat 无法启动
日志错误�Q�Apache Tomcat 服务�?0 (0x0) 服务性错误而停�?br />解决�Ҏ��Q�把 JRE \BIN目录下的 msvcr71.dll 文�g拯��?C:\windows\system32 下面

��L�� 2008-05-17 21:07 发表评论

看国产成人h片视频,性欧美精品孕妇,精品国产乱码久久久久久婷婷

JavaBean规范

JDK�pȝ��变量讄���

JSP中文��q��解决办法

Tomcat虚拟站点及虚拟目录的配置

JDK�pȝ��变量讄��