mybean.java

《jsp网站开发技术》中的源代码(清华大学出版社)

package ServletBean;

import java.io.*;
import java.sql.*;

public class MyBean implements Serializable
{
//建立数据库连结
protected Connection conn = null;
protected Statement MyState = null;
protected ResultSet Result;

//MyBean 构造子注解。
public MyBean(){
super();
}

//在此处插入方法说明。Execute方法连接数据库
public void executesql() 
{
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();

//用JDBC连接到数据库
conn= DriverManager.getConnection("jdbc:odbc:MyDB", "admin", "admin");
MyState=conn.createStatement();
String sql="select * from class";
ResultSet rs = MyState.executeQuery(sql);
setResult(rs);
}catch(SQLException e1){
}catch(IllegalAccessException e2){
}catch(ClassNotFoundException e3){
}catch(InstantiationException e4){
}
}

//返回Java.sql.ResultSet
public java.sql.ResultSet getResult() {
return Result;
}

//设置结果集,newResult
public void setResult(java.sql.ResultSet newResult) {
Result = newResult;
}

//关闭数据库连接
public void Sqlclose(){
try{
conn.close();
MyState.close();
}catch (SQLException e) {
}
}
}