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BlogJava-陌上尘-文章分类-JAVA－J2EEhttp://www.blogjava.net/moshangchen/category/32569.htmlJVAA学习笔记zh-cnWed, 25 Jun 2008 14:56:46 GMTWed, 25 Jun 2008 14:56:46 GMT60JAVA－Derby连接http://www.blogjava.net/moshangchen/articles/210695.html陌上尘陌上尘Wed, 25 Jun 2008 14:30:00 GMThttp://www.blogjava.net/moshangchen/articles/210695.htmlhttp://www.blogjava.net/moshangchen/comments/210695.htmlhttp://www.blogjava.net/moshangchen/articles/210695.html#Feedback0http://www.blogjava.net/moshangchen/comments/commentRss/210695.htmlhttp://www.blogjava.net/moshangchen/services/trackbacks/210695.html /**
* 第一个 JDBC 的 HelloWorld 程序, 数据库访问 MySQL.
* @author BeanSoft@126.com
* @version 0.3 2007-12-12
*/
public class JDBCHelloWorld {
    public static void main(String[] args) {
        // 1. 注册驱动
        try {
            Class.forName("org.apache.derby.jdbc.ClientDriver");
        } catch (ClassNotFoundException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }
       ......
       try {
           // 2. 获取数据库的连接
           conn = java.sql.DriverManager.getConnection(
                   "jdbc:derby://localhost:1527/myeclipse",
"classiccars", "classiccars");
// 3. 获取表达式
           stmt = conn.createStatement();
                   // 执行插入数据的 SQL
           stmt.executeUpdate("insert into Student(username, password,age) values('张三', '1234', 20)");
           // 4. 执行 SQL
           rs = stmt.executeQuery("select * from Student");
           // 5. 显示结果集里面的数据
           while(rs.next()) {
               System.out.println("编号=" + rs.getInt(1));
               System.out.println("学生姓名=" +
                       rs.getString("username"));
                                      System.out.println("密码=" + rs.getString("password"));
                                      System.out.println("年龄=" + rs.getString("age"));
                                  }
           // 执行删除数据的 SQL
          // stmt.executeUpdate("delete from Student");
                              } catch (SQLException e) {
                                  e.printStackTrace();
                              } finally {
                                 // 6. 释放资源,建议放在finally语句中确保都被关闭掉了
                                 try {
                                     rs.close();
                                 } catch (SQLException e) {
                                 }
                                 try {
                                     stmt.close();
                                 } catch (SQLException e) {
                                 }
                                 try {
                                     conn.close();
                                 } catch (SQLException e) {
                                 }
                              }
                          }
                       }

陌上尘 2008-06-25 22:30 发表评论

]]>JAVA－ACCESS数据库连接代码http://www.blogjava.net/moshangchen/articles/210693.html陌上尘陌上尘Wed, 25 Jun 2008 14:26:00 GMThttp://www.blogjava.net/moshangchen/articles/210693.htmlhttp://www.blogjava.net/moshangchen/comments/210693.htmlhttp://www.blogjava.net/moshangchen/articles/210693.html#Feedback0http://www.blogjava.net/moshangchen/comments/commentRss/210693.htmlhttp://www.blogjava.net/moshangchen/services/trackbacks/210693.html public class Access{
public static void main(String args[]){
Connection con;
Statement sql; //声明Statement对象
ResultSet rs;
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
}
catch(ClassNotFoundException e){
System.out.println(""+e);
}
try{
con=DriverManager.getConnection("jdbc:odbc:redsun","","");
sql=con.createStatement();
rs=sql.executeQuery("Select * FROM member");
while(rs.next()){
String name=rs.getString(1); //获得数据库第一列
String sex=rs.getString(2);
System.out.println("姓名:"+name); //输出信息
System.out.println("性别:"+sex);
}
con.close();
}
catch(SQLException el){}
}
}

陌上尘 2008-06-25 22:26 发表评论

]]>JAVA－SQL SERVER 数据库连接代码http://www.blogjava.net/moshangchen/articles/210692.html陌上尘陌上尘Wed, 25 Jun 2008 14:25:00 GMThttp://www.blogjava.net/moshangchen/articles/210692.htmlhttp://www.blogjava.net/moshangchen/comments/210692.htmlhttp://www.blogjava.net/moshangchen/articles/210692.html#Feedback0http://www.blogjava.net/moshangchen/comments/commentRss/210692.htmlhttp://www.blogjava.net/moshangchen/services/trackbacks/210692.html public class Test {


     public static void main(String[] args) {

        String sql;
        Connection conn;
        Statement stmt;    //声明Statement对象
        ResultSet rs;
        try
        {
        Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
        String url="jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=shopping";
        String user="sa";
        String password="sa";
        conn= DriverManager.getConnection(url,user,password);
        stmt=conn.createStatement();
        sql="select * from Users";
        rs=stmt.executeQuery(sql);
        while(rs.next())
        {
        System.out.println(rs.getString(1));   //输出数据库第一列
        System.out.println(rs.getString(2));
        }
        rs.close();
        stmt.close();
        conn.close();
        }
        catch(Exception e)
        {
        e.printStackTrace();
        }

     }
}
                       ______________________________________________________________________________

import java.sql.*;
public class Test {


     public static void main(String[] args) {

        Connection conn;
        Statement stmt;
        try
        {
        Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
        String url="jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=shopping";
        String user="sa";
        String password="sa";
        conn= DriverManager.getConnection(url,user,password);
        stmt=conn.createStatement();
        System.out.println(" 连接成功 !");
        stmt.close();
        conn.close();
        }
        catch(Exception e)
        {
        e.printStackTrace();
        }
     }
}

陌上尘 2008-06-25 22:25 发表评论

]]>JAVA－MYSQL数据库连接代码http://www.blogjava.net/moshangchen/articles/210691.html陌上尘陌上尘Wed, 25 Jun 2008 14:23:00 GMThttp://www.blogjava.net/moshangchen/articles/210691.htmlhttp://www.blogjava.net/moshangchen/comments/210691.htmlhttp://www.blogjava.net/moshangchen/articles/210691.html#Feedback0http://www.blogjava.net/moshangchen/comments/commentRss/210691.htmlhttp://www.blogjava.net/moshangchen/services/trackbacks/210691.html /**
* 第一个 JDBC 的 HelloWorld 程序, 数据库访问 MySQL.
* @author BeanSoft
* @version 0.3 2007-12-12
*/
public class JDBCHelloWorld {
    public static void main(String[] args) {
        // 1. 注册驱动
        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }// Mysql 的驱动
        //先定义变量,后使用和关闭
        java.sql.Connection conn = null;//数据库连接
        java.sql.Statement stmt = null;//数据库表达式
        java.sql.ResultSet rs = null;//结果集
        try {
           // 2. 获取数据库的连接
           conn = java.sql.DriverManager.getConnection(
    "jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=GBK", "root", null); // root是用户名,密码为空
           // 3. 获取表达式
           stmt = conn.createStatement();
                   // 执行插入数据的 SQL
           stmt.executeUpdate("insert into Student(username, password,age) values('张三', '1234', 20)");
           // 4. 执行 SQL
           rs = stmt.executeQuery("select * from Student");
           // 5. 显示结果集里面的数据
           while(rs.next()) {
               System.out.println("编号=" + rs.getInt(1));
               System.out.println("学生姓名=" +
                       rs.getString("username"));
                                      System.out.println("密码=" + rs.getString("password"));
                                      System.out.println("年龄=" + rs.getString("age"));
                                  }
           // 执行删除数据的 SQL
          // stmt.executeUpdate("delete from Student");
                              } catch (SQLException e) {
                                  e.printStackTrace();
                              } finally {
                                 // 6. 释放资源,建议放在finally语句中确保都被关闭掉了
                                 try {
                                     rs.close();
                                 } catch (SQLException e) {
                                 }
                                 try {
                                     stmt.close();
                                 } catch (SQLException e) {
                                 }
                                 try {
                                     conn.close();
                                 } catch (SQLException e) {
                                 }
                              }
                          }
                       }

陌上尘 2008-06-25 22:23 发表评论

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